Merge pull request #238 from vsafonkin/v-vsafonkin/cache-error-handling

Error handling for cache

.gitattributes

@@ -0,0 +1,2 @@
+* text=auto
+.licenses/** -diff linguist-generated=true

.github/ISSUE_TEMPLATE/bug_report.md

@@ -0,0 +1,38 @@
+---
+name: Bug report
+about: Create a bug report
+title: ''
+labels: bug, needs triage
+assignees: ''
+
+---
+
+<!--- Please direct any generic questions related to actions to our support community forum at https://github.community/c/code-to-cloud/github-actions/41 --->
+<!--- Before opening up a new bug report, please make sure to check for similar existing issues -->
+
+**Description:**
+A clear and concise description of what the bug is.
+
+**Action version:**
+Specify the action version
+
+**Platform:**
+- [ ] Ubuntu
+- [ ] macOS
+- [ ] Windows
+
+**Runner type:**
+- [ ] Hosted
+- [ ] Self-hosted
+
+**Tools version:**
+<!--- Please specify go version -->
+
+**Repro steps:**  
+A description with steps to reproduce the issue. If your have a public example or repo to share, please provide the link.
+
+**Expected behavior:**
+A description of what you expected to happen.
+
+**Actual behavior:**
+A description of what is actually happening.

.github/ISSUE_TEMPLATE/config.yml

@@ -0,0 +1 @@
+blank_issues_enabled: false

.github/ISSUE_TEMPLATE/feature_request.md

@@ -0,0 +1,18 @@
+---
+name: Feature request
+about: Suggest an idea for this project
+title: ''
+labels: feature request, needs triage
+assignees: ''
+---
+<!--- Please direct any generic questions related to actions to our support community forum at https://github.community/c/code-to-cloud/github-actions/41 --->
+<!--- Before opening up a new feature request, please make sure to check for similar existing issues and pull requests -->
+
+**Description:**
+Describe your proposal.
+
+**Justification:**
+Justification or a use case for your proposal.
+
+**Are you willing to submit a PR?**
+<!--- We accept contributions! -->

.github/go.json

@@ -1,16 +0,0 @@
-{
-    "problemMatcher": [
-        {
-            "owner": "go",
-            "pattern": [
-                {
-                    "regexp": "^([^:]*: )?((.:)?[^:]*):(\\d+)(:(\\d+))?: (.*)$",
-                    "file": 2,
-                    "line": 4,
-                    "column": 6,
-                    "message": 7
-                }
-            ]
-        }
-    ]
-}

.github/pull_request_template.md

@@ -0,0 +1,9 @@
+**Description:**
+Describe your changes.
+
+**Related issue:**
+Add link to the related issue.
+
+**Check list:**
+- [ ] Mark if documentation changes are required.
+- [ ] Mark if tests were added or updated to cover the changes.

.github/workflows/check-dist.yml

@@ -0,0 +1,51 @@
+# `dist/index.js` is a special file in Actions.
+# When you reference an action with `uses:` in a workflow,
+# `index.js` is the code that will run.
+# For our project, we generate this file through a build process from other source files.
+# We need to make sure the checked-in `index.js` actually matches what we expect it to be.
+name: Check dist/
+
+on:
+  push:
+    branches:
+      - main
+    paths-ignore:
+      - '**.md'
+  pull_request:
+    paths-ignore:
+      - '**.md'
+  workflow_dispatch:
+
+jobs:
+  check-dist:
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v3
+
+      - name: Set Node.js 16.x
+        uses: actions/setup-node@v3
+        with:
+          node-version: 16.x
+
+      - name: Install dependencies
+        run: npm ci
+
+      - name: Rebuild the dist/ directory
+        run: npm run build
+
+      - name: Compare the expected and actual dist/ directories
+        run: |
+          if [ "$(git diff --ignore-space-at-eol dist/ | wc -l)" -gt "0" ]; then
+            echo "Detected uncommitted changes after build.  See status below:"
+            git diff
+            exit 1
+          fi
+        id: diff
+
+      # If index.js was different than expected, upload the expected version as an artifact
+      - uses: actions/upload-artifact@v3
+        if: ${{ failure() && steps.diff.conclusion == 'failure' }}
+        with:
+          name: dist
+          path: dist/

.github/workflows/licensed.yml

@@ -0,0 +1,28 @@
+name: Licensed
+
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+    branches:
+      - main
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    name: Check licenses
+    steps:
+      - uses: actions/checkout@v3
+      - name: Set Node.js 16.x
+        uses: actions/setup-node@v3
+        with:
+          node-version: 16.x
+      - run: npm ci
+      - name: Install licensed
+        run: |
+          cd $RUNNER_TEMP
+          curl -Lfs -o licensed.tar.gz https://github.com/github/licensed/releases/download/3.4.4/licensed-3.4.4-linux-x64.tar.gz
+          sudo tar -xzf licensed.tar.gz
+          sudo mv licensed /usr/local/bin/licensed
+      - run: licensed status

.github/workflows/release-new-action-version.yml

@@ -0,0 +1,27 @@
+name: Release new action version
+on:
+  release:
+    types: [released]
+  workflow_dispatch:
+    inputs:
+      TAG_NAME:
+        description: 'Tag name that the major tag will point to'
+        required: true
+
+env:
+  TAG_NAME: ${{ github.event.inputs.TAG_NAME || github.event.release.tag_name }}
+permissions:
+  contents: write
+
+jobs:
+  update_tag:
+    name: Update the major tag to include the ${{ github.event.inputs.TAG_NAME || github.event.release.tag_name }} changes
+    environment:
+      name: releaseNewActionVersion
+    runs-on: ubuntu-latest
+    steps:
+      - name: Update the ${{ env.TAG_NAME }} tag
+        uses: actions/publish-action@v0.1.0
+        with:
+          source-tag: ${{ env.TAG_NAME }}
+          slack-webhook: ${{ secrets.SLACK_WEBHOOK }}

.github/workflows/versions.yml

@@ -0,0 +1,109 @@
+name: Validate 'setup-go'
+on:
+  push:
+    branches:
+      - main
+    paths-ignore:
+      - '**.md'
+  pull_request:
+    paths-ignore:
+      - '**.md'
+  schedule:
+    - cron: 0 0 * * *
+
+jobs:
+  local-cache:
+    name: Setup local-cache version
+    runs-on: ${{ matrix.os }}
+    strategy:
+      fail-fast: false
+      matrix:
+        os: [macos-latest, windows-latest, ubuntu-latest]
+        go: [1.12, 1.13, 1.14]
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+
+      - name: setup-go ${{ matrix.go }}
+        uses: ./
+        with:
+          go-version: ${{ matrix.go }}
+
+      - name: verify go
+        run: __tests__/verify-go.sh ${{ matrix.go }}
+        shell: bash
+
+  check-latest:
+    runs-on: ${{ matrix.os }}
+    strategy:
+      fail-fast: false
+      matrix:
+        os: [ubuntu-latest, windows-latest, macos-latest]
+        go-version: [1.16, 1.17]
+    steps:
+      - uses: actions/checkout@v3
+      - name: Setup Go and check latest
+        uses: ./
+        with:
+          go-version: ${{ matrix.go-version }}
+          check-latest: true
+      - name: Verify Go
+        run: go version
+
+  go-version-file:
+    runs-on: ${{ matrix.os }}
+    strategy:
+      fail-fast: false
+      matrix:
+        os: [ubuntu-latest, windows-latest, macos-latest]
+    steps:
+      - uses: actions/checkout@v3
+      - name: Setup Go and check latest
+        uses: ./
+        with:
+          go-version-file: __tests__/data/go.mod
+      - name: verify go
+        run: __tests__/verify-go.sh 1.14
+        shell: bash
+
+  setup-versions-from-manifest:
+    name: Setup ${{ matrix.go }} ${{ matrix.os }}
+    runs-on: ${{ matrix.os }}
+    strategy:
+      fail-fast: false
+      matrix:
+        os: [macos-latest, windows-latest, ubuntu-latest]
+        go: [1.12.16, 1.13.11, 1.14.3]
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+
+      - name: setup-go ${{ matrix.go }}
+        uses: ./
+        with:
+          go-version: ${{ matrix.go }}
+
+      - name: verify go
+        run: __tests__/verify-go.sh ${{ matrix.go }}
+        shell: bash
+
+  setup-versions-from-dist:
+    name: Setup ${{ matrix.go }} ${{ matrix.os }}
+    runs-on: ${{ matrix.os }}
+    strategy:
+      fail-fast: false
+      matrix:
+        os: [macos-latest, windows-latest, ubuntu-latest]
+        go: [1.9, 1.8.6]
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+
+      - name: setup-go ${{ matrix.go }}
+        uses: ./
+        with:
+          go-version: ${{ matrix.go }}
+
+      - name: verify go
+        run: __tests__/verify-go.sh ${{ matrix.go }}
+        shell: bash

.github/workflows/workflow.yml

@@ -1,5 +1,13 @@
-name: Main workflow
-on: [push]
+name: build-test
+on:
+  push:
+    branches:
+      - main
+    paths-ignore:
+      - '**.md'
+  pull_request:
+    paths-ignore:
+      - '**.md'
 jobs:
   run:
     name: Run
@@ -8,19 +16,24 @@ jobs:
       matrix:
         operating-system: [ubuntu-latest, windows-latest]
     steps:
-    - name: Checkout
-      uses: actions/checkout@master
+      - name: Checkout
+        uses: actions/checkout@v3
 
-    - name: Set Node.js 10.x
-      uses: actions/setup-node@master
-      with:
-        version: 10.x
+      - name: Setup node 16
+        uses: actions/setup-node@v3
+        with:
+          node-version: 16
+          cache: npm
 
-    - name: npm install
-      run: npm install
+      - name: npm ci
+        run: npm ci
 
-    - name: Lint
-      run: npm run format-check
+      - name: Lint
+        run: npm run format-check
 
-    - name: npm test
-      run: npm test
+      - name: npm test
+        run: npm test
+
+      - name: audit packages
+        run: npm audit --audit-level=high
+        if: matrix.operating-system == 'ubuntu-latest'

.gitignore

@@ -1,7 +1,91 @@
-# runtime dependencies are checked in
-# dev dependencies are *not* checked in
-node_modules/.bin
-node_modules/typescript
-node_modules/@types
-node_modules/prettier
-__tests__/runner/*
+node_modules/
+lib
+
+# Rest of the file pulled from https://github.com/github/gitignore/blob/master/Node.gitignore
+# Logs
+logs
+*.log
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+lerna-debug.log*
+
+# Diagnostic reports (https://nodejs.org/api/report.html)
+report.[0-9]*.[0-9]*.[0-9]*.[0-9]*.json
+
+# Runtime data
+pids
+*.pid
+*.seed
+*.pid.lock
+
+# Directory for instrumented libs generated by jscoverage/JSCover
+lib-cov
+
+# Coverage directory used by tools like istanbul
+coverage
+*.lcov
+
+# nyc test coverage
+.nyc_output
+
+# Grunt intermediate storage (https://gruntjs.com/creating-plugins#storing-task-files)
+.grunt
+
+# Bower dependency directory (https://bower.io/)
+bower_components
+
+# node-waf configuration
+.lock-wscript
+
+# Compiled binary addons (https://nodejs.org/api/addons.html)
+build/Release
+
+# Dependency directories
+jspm_packages/
+
+# TypeScript v1 declaration files
+typings/
+
+# TypeScript cache
+*.tsbuildinfo
+
+# Optional npm cache directory
+.npm
+
+# Optional eslint cache
+.eslintcache
+
+# Optional REPL history
+.node_repl_history
+
+# Output of 'npm pack'
+*.tgz
+
+# Yarn Integrity file
+.yarn-integrity
+
+# dotenv environment variables file
+.env
+.env.test
+
+# parcel-bundler cache (https://parceljs.org/)
+.cache
+
+# next.js build output
+.next
+
+# nuxt.js build output
+.nuxt
+
+# vuepress build output
+.vuepress/dist
+
+# Serverless directories
+.serverless/
+
+# FuseBox cache
+.fusebox/
+
+# DynamoDB Local files
+.dynamodb/

.licensed.yml

@@ -0,0 +1,15 @@
+sources:
+  npm: true
+
+allowed:
+  - apache-2.0
+  - bsd-2-clause
+  - bsd-3-clause
+  - isc
+  - mit
+  - cc0-1.0
+  - unlicense
+  - 0bsd
+
+reviewed:
+  npm:

CODEOWNERS

@@ -0,0 +1 @@
+* @actions/actions-service

CODE_OF_CONDUCT.md

@@ -0,0 +1,76 @@
+# Contributor Covenant Code of Conduct
+
+## Our Pledge
+
+In the interest of fostering an open and welcoming environment, we as
+contributors and maintainers pledge to make participation in our project and
+our community a harassment-free experience for everyone, regardless of age, body
+size, disability, ethnicity, sex characteristics, gender identity and expression,
+level of experience, education, socio-economic status, nationality, personal
+appearance, race, religion, or sexual identity and orientation.
+
+## Our Standards
+
+Examples of behavior that contributes to creating a positive environment
+include:
+
+* Using welcoming and inclusive language
+* Being respectful of differing viewpoints and experiences
+* Gracefully accepting constructive criticism
+* Focusing on what is best for the community
+* Showing empathy towards other community members
+
+Examples of unacceptable behavior by participants include:
+
+* The use of sexualized language or imagery and unwelcome sexual attention or
+  advances
+* Trolling, insulting/derogatory comments, and personal or political attacks
+* Public or private harassment
+* Publishing others' private information, such as a physical or electronic
+  address, without explicit permission
+* Other conduct which could reasonably be considered inappropriate in a
+  professional setting
+
+## Our Responsibilities
+
+Project maintainers are responsible for clarifying the standards of acceptable
+behavior and are expected to take appropriate and fair corrective action in
+response to any instances of unacceptable behavior.
+
+Project maintainers have the right and responsibility to remove, edit, or
+reject comments, commits, code, wiki edits, issues, and other contributions
+that are not aligned to this Code of Conduct, or to ban temporarily or
+permanently any contributor for other behaviors that they deem inappropriate,
+threatening, offensive, or harmful.
+
+## Scope
+
+This Code of Conduct applies within all project spaces, and it also applies when
+an individual is representing the project or its community in public spaces.
+Examples of representing a project or community include using an official
+project e-mail address, posting via an official social media account, or acting
+as an appointed representative at an online or offline event. Representation of
+a project may be further defined and clarified by project maintainers.
+
+## Enforcement
+
+Instances of abusive, harassing, or otherwise unacceptable behavior may be
+reported by contacting the project team at opensource+actions/setup-go@github.com. All
+complaints will be reviewed and investigated and will result in a response that
+is deemed necessary and appropriate to the circumstances. The project team is
+obligated to maintain confidentiality with regard to the reporter of an incident.
+Further details of specific enforcement policies may be posted separately.
+
+Project maintainers who do not follow or enforce the Code of Conduct in good
+faith may face temporary or permanent repercussions as determined by other
+members of the project's leadership.
+
+## Attribution
+
+This Code of Conduct is adapted from the [Contributor Covenant][homepage], version 1.4,
+available at https://www.contributor-covenant.org/version/1/4/code-of-conduct.html
+
+[homepage]: https://www.contributor-covenant.org
+
+For answers to common questions about this code of conduct, see
+https://www.contributor-covenant.org/faq

README.md

@@ -1,45 +1,182 @@
 # setup-go
 
+[![build-test](https://github.com/actions/setup-go/actions/workflows/workflow.yml/badge.svg)](https://github.com/actions/setup-go/actions/workflows/workflow.yml)
+[![Validate 'setup-go'](https://github.com/actions/setup-go/actions/workflows/versions.yml/badge.svg)](https://github.com/actions/setup-go/actions/workflows/versions.yml)
+
 This action sets up a go environment for use in actions by:
 
-- optionally downloading and caching a version of go by version and adding to PATH
-- registering problem matchers for error output
+- Optionally downloading and caching a version of Go by version and adding to `PATH`.
+- Registering problem matchers for error output.
+
+# V3
+
+The V3 edition of the action offers:
+
+- Adds `GOBIN` to the `PATH`
+- Proxy support
+- Check latest version
+- Caching packages dependencies
+- Bug Fixes (including issues around version matching and semver)
+
+The action will first check the local cache for a version match. If a version is not found locally, it will pull it from the `main` branch of the [go-versions](https://github.com/actions/go-versions/blob/main/versions-manifest.json) repository. On miss or failure, it will fall back to downloading directly from [go dist](https://storage.googleapis.com/golang). To change the default behavior, please use the [check-latest input](#check-latest-version).
+
+**Note:** The `setup-go` action uses executable binaries which are built by Golang side. The action does not build golang from source code.
+
+Matching by [semver spec](https://github.com/npm/node-semver):
+
+```yaml
+steps:
+  - uses: actions/checkout@v3
+  - uses: actions/setup-go@v3
+    with:
+      go-version: '^1.13.1' # The Go version to download (if necessary) and use.
+  - run: go version
+```
+
+```yaml
+steps:
+  - uses: actions/checkout@v3
+  - uses: actions/setup-go@v3
+    with:
+      go-version: '>=1.17.0'
+  - run: go version
+```
+
+Matching an unstable pre-release:
+
+```yaml
+steps:
+  - uses: actions/checkout@v3
+  - uses: actions/setup-go@v3
+    with:
+      go-version: '1.18.0-rc.1' # The Go version to download (if necessary) and use.
+  - run: go version
+```
+
+```yaml
+steps:
+  - uses: actions/checkout@v3
+  - uses: actions/setup-go@v3
+    with:
+      go-version: '1.16.0-beta.1' # The Go version to download (if necessary) and use.
+  - run: go version
+```
 
 # Usage
 
 See [action.yml](action.yml)
 
-Basic:
+## Basic
+
 ```yaml
 steps:
-- uses: actions/checkout@master
-- uses: actions/setup-go@v1
-  with:
-    version: 1.9.3 // The Go version to download (if necessary) and use.
-- run: go run hello.go
+  - uses: actions/checkout@v3
+  - uses: actions/setup-go@v3
+    with:
+      go-version: '1.16.1' # The Go version to download (if necessary) and use.
+  - run: go run hello.go
 ```
 
-Matrix Testing:
+
+## Check latest version
+
+The `check-latest` flag defaults to `false`. Use the default or set `check-latest` to `false` if you prefer stability and if you want to ensure a specific Go version is always used.
+
+If `check-latest` is set to `true`, the action first checks if the cached version is the latest one. If the locally cached version is not the most up-to-date, a Go version will then be downloaded. Set `check-latest` to `true` if you want the most up-to-date Go version to always be used.
+
+> Setting `check-latest` to `true` has performance implications as downloading Go versions is slower than using cached versions.
+
+```yaml
+steps:
+  - uses: actions/checkout@v3
+  - uses: actions/setup-go@v3
+    with:
+      go-version: '1.14'
+      check-latest: true
+  - run: go run hello.go
+```
+## Caching dependency files and build outputs:
+
+The action has a built-in functionality for caching and restoring go modules and build outputs. It uses [actions/cache](https://github.com/actions/cache) under the hood but requires less configuration settings. The `cache` input is optional, and caching is turned off by default.
+
+The action defaults to search for the dependency file - go.sum in the repository root, and uses its hash as a part of the cache key. Use `cache-dependency-path` input for cases when multiple dependency files are used, or they are located in different subdirectories.
+
+**Caching without specifying dependency file path**
+```yaml
+steps:
+  - uses: actions/checkout@v3
+  - uses: actions/setup-go@v3
+    with:
+      go-version: '1.17'
+      check-latest: true
+      cache: true
+  - run: go run hello.go
+```
+
+**Caching in monorepos**
+```yaml
+steps:
+  - uses: actions/checkout@v3
+  - uses: actions/setup-go@v3
+    with:
+      go-version: '1.17'
+      check-latest: true
+      cache: true
+      cache-dependency-path: subdir/go.sum
+  - run: go run hello.go
+  ```
+## Getting go version from the go.mod file
+
+The `go-version-file` input accepts a path to a `go.mod` file containing the version of Go to be used by a project. As the `go.mod` file contains only major and minor (e.g. 1.18) tags, the action will search for the latest available patch version sequentially in the runner's directory with the cached tools, in the [version-manifest.json](https://github.com/actions/go-versions/blob/main/versions-manifest.json) file or at the go servers.
+
+If both the `go-version` and the `go-version-file` inputs are provided then the `go-version` input is used.
+> The action will search for the `go.mod` file relative to the repository root
+
+```yaml
+steps:
+- uses: actions/checkout@v3
+- uses: actions/setup-go@v3
+  with:
+    go-version-file: 'path/to/go.mod'
+- run: go version
+```
+
+## Matrix testing
+
 ```yaml
 jobs:
   build:
+    runs-on: ubuntu-latest
     strategy:
       matrix:
-        go: [ 1.8, 1.9.3, 1.10 ]
+        go: [ '1.14', '1.13' ]
     name: Go ${{ matrix.go }} sample
     steps:
-      - uses: actions/checkout@master
+      - uses: actions/checkout@v3
       - name: Setup go
-        uses: actions/setup-go@v1
+        uses: actions/setup-go@v3
         with:
-          version: ${{ matrix.go }}
+          go-version: ${{ matrix.go }}
       - run: go run hello.go
 ```
 
+### Supported version syntax
+
+The `go-version` input supports the following syntax:
+
+- Specific versions: `1.15`, `1.16.1`, `1.17.0-rc.2`, `1.16.0-beta.1`
+- SemVer's version range syntax: `^1.13.1`, `>=1.18.0-rc.1`
+
+For more information about semantic versioning, please refer to [semver](https://github.com/npm/node-semver) documentation.
+
 # License
 
 The scripts and documentation in this project are released under the [MIT License](LICENSE)
 
 # Contributions
 
-Contributions are welcome!  See [Contributor's Guide](docs/contributors.md)
+Contributions are welcome! See [Contributor's Guide](docs/contributors.md)
+
+## Code of Conduct
+
+:wave: Be nice. See [our code of conduct](CONDUCT)

__tests__/cache-restore.test.ts

@@ -0,0 +1,86 @@
+import * as cache from '@actions/cache';
+import * as core from '@actions/core';
+import * as glob from '@actions/glob';
+
+import * as cacheRestore from '../src/cache-restore';
+import * as cacheUtils from '../src/cache-utils';
+import {PackageManagerInfo} from '../src/package-managers';
+
+describe('restoreCache', () => {
+  //Arrange
+  let hashFilesSpy = jest.spyOn(glob, 'hashFiles');
+  let getCacheDirectoryPathSpy = jest.spyOn(
+    cacheUtils,
+    'getCacheDirectoryPath'
+  );
+  let restoreCacheSpy = jest.spyOn(cache, 'restoreCache');
+  let infoSpy = jest.spyOn(core, 'info');
+  let setOutputSpy = jest.spyOn(core, 'setOutput');
+
+  const packageManager = 'default';
+  const cacheDependencyPath = 'path';
+
+  beforeEach(() => {
+    getCacheDirectoryPathSpy.mockImplementation(
+      (PackageManager: PackageManagerInfo) => {
+        return new Promise<string[]>(resolve => {
+          resolve(['cache_directory_path', 'cache_directory_path']);
+        });
+      }
+    );
+  });
+
+  it('should throw if dependency file path is not valid', async () => {
+    //Arrange
+    hashFilesSpy.mockImplementation((somePath: string) => {
+      return new Promise<string>(resolve => {
+        resolve('');
+      });
+    });
+
+    //Act + Assert
+    expect(async () => {
+      await cacheRestore.restoreCache(packageManager, cacheDependencyPath);
+    }).rejects.toThrowError(
+      'Some specified paths were not resolved, unable to cache dependencies.'
+    );
+  });
+
+  it('should inform if cache hit is not occured', async () => {
+    //Arrange
+    hashFilesSpy.mockImplementation((somePath: string) => {
+      return new Promise<string>(resolve => {
+        resolve('file_hash');
+      });
+    });
+
+    restoreCacheSpy.mockImplementation(() => {
+      return new Promise<string>(resolve => {
+        resolve('');
+      });
+    });
+
+    //Act + Assert
+    await cacheRestore.restoreCache(packageManager, cacheDependencyPath);
+    expect(infoSpy).toBeCalledWith(`Cache is not found`);
+  });
+
+  it('should set output if cache hit is occured', async () => {
+    //Arrange
+    hashFilesSpy.mockImplementation((somePath: string) => {
+      return new Promise<string>(resolve => {
+        resolve('file_hash');
+      });
+    });
+
+    restoreCacheSpy.mockImplementation(() => {
+      return new Promise<string>(resolve => {
+        resolve('cache_key');
+      });
+    });
+
+    //Act + Assert
+    await cacheRestore.restoreCache(packageManager, cacheDependencyPath);
+    expect(setOutputSpy).toBeCalledWith('cache-hit', true);
+  });
+});

__tests__/cache-utils.test.ts

@@ -0,0 +1,179 @@
+import * as exec from '@actions/exec';
+import * as cache from '@actions/cache';
+import * as core from '@actions/core';
+import * as cacheUtils from '../src/cache-utils';
+import {PackageManagerInfo} from '../src/package-managers';
+
+describe('getCommandOutput', () => {
+  //Arrange
+  let getExecOutputSpy = jest.spyOn(exec, 'getExecOutput');
+
+  it('should return trimmed stdout in case of successful exit code', async () => {
+    //Arrange
+    const stdoutResult = ' stdout ';
+    const trimmedStdout = stdoutResult.trim();
+
+    getExecOutputSpy.mockImplementation((commandLine: string) => {
+      return new Promise<exec.ExecOutput>(resolve => {
+        resolve({exitCode: 0, stdout: stdoutResult, stderr: ''});
+      });
+    });
+
+    //Act + Assert
+    return cacheUtils
+      .getCommandOutput('command')
+      .then(data => expect(data).toBe(trimmedStdout));
+  });
+
+  it('should return error in case of unsuccessful exit code', async () => {
+    //Arrange
+    const stderrResult = 'error message';
+
+    getExecOutputSpy.mockImplementation((commandLine: string) => {
+      return new Promise<exec.ExecOutput>(resolve => {
+        resolve({exitCode: 10, stdout: '', stderr: stderrResult});
+      });
+    });
+
+    //Act + Assert
+    expect(async () => {
+      await cacheUtils.getCommandOutput('command');
+    }).rejects.toThrow();
+  });
+});
+
+describe('getPackageManagerInfo', () => {
+  it('should return package manager info in case of valid package manager name', async () => {
+    //Arrange
+    const packageManagerName = 'default';
+    const expectedResult = {
+      dependencyFilePattern: 'go.sum',
+      cacheFolderCommandList: ['go env GOMODCACHE', 'go env GOCACHE']
+    };
+
+    //Act + Assert
+    return cacheUtils
+      .getPackageManagerInfo(packageManagerName)
+      .then(data => expect(data).toEqual(expectedResult));
+  });
+
+  it('should throw the error in case of invalid package manager name', async () => {
+    //Arrange
+    const packageManagerName = 'invalidName';
+
+    //Act + Assert
+    expect(async () => {
+      await cacheUtils.getPackageManagerInfo(packageManagerName);
+    }).rejects.toThrow();
+  });
+});
+
+describe('getCacheDirectoryPath', () => {
+  //Arrange
+  let getExecOutputSpy = jest.spyOn(exec, 'getExecOutput');
+
+  const validPackageManager: PackageManagerInfo = {
+    dependencyFilePattern: 'go.sum',
+    cacheFolderCommandList: ['go env GOMODCACHE', 'go env GOCACHE']
+  };
+
+  it('should return path to the cache folders which specified package manager uses', async () => {
+    //Arrange
+    getExecOutputSpy.mockImplementation((commandLine: string) => {
+      return new Promise<exec.ExecOutput>(resolve => {
+        resolve({exitCode: 0, stdout: 'path/to/cache/folder', stderr: ''});
+      });
+    });
+
+    const expectedResult = ['path/to/cache/folder', 'path/to/cache/folder'];
+
+    //Act + Assert
+    return cacheUtils
+      .getCacheDirectoryPath(validPackageManager)
+      .then(data => expect(data).toEqual(expectedResult));
+  });
+
+  it('should throw if the specified package name is invalid', async () => {
+    getExecOutputSpy.mockImplementation((commandLine: string) => {
+      return new Promise<exec.ExecOutput>(resolve => {
+        resolve({exitCode: 10, stdout: '', stderr: 'Error message'});
+      });
+    });
+
+    //Act + Assert
+    expect(async () => {
+      await cacheUtils.getCacheDirectoryPath(validPackageManager);
+    }).rejects.toThrow();
+  });
+});
+
+describe('isCacheFeatureAvailable', () => {
+  //Arrange
+  let isFeatureAvailableSpy = jest.spyOn(cache, 'isFeatureAvailable');
+  let warningSpy = jest.spyOn(core, 'warning');
+
+  it('should return true when cache feature is available', () => {
+    //Arrange
+    isFeatureAvailableSpy.mockImplementation(() => {
+      return true;
+    });
+
+    let functionResult;
+
+    //Act
+    functionResult = cacheUtils.isCacheFeatureAvailable();
+
+    //Assert
+    expect(functionResult).toBeTruthy();
+  });
+
+  it('should warn when cache feature is unavailable and GHES is not used ', () => {
+    //Arrange
+    isFeatureAvailableSpy.mockImplementation(() => {
+      return false;
+    });
+
+    process.env['GITHUB_SERVER_URL'] = 'https://github.com';
+
+    let warningMessage =
+      'The runner was not able to contact the cache service. Caching will be skipped';
+
+    //Act
+    cacheUtils.isCacheFeatureAvailable();
+
+    //Assert
+    expect(warningSpy).toHaveBeenCalledWith(warningMessage);
+  });
+
+  it('should return false when cache feature is unavailable', () => {
+    //Arrange
+    isFeatureAvailableSpy.mockImplementation(() => {
+      return false;
+    });
+
+    process.env['GITHUB_SERVER_URL'] = 'https://github.com';
+
+    let functionResult;
+
+    //Act
+    functionResult = cacheUtils.isCacheFeatureAvailable();
+
+    //Assert
+    expect(functionResult).toBeFalsy();
+  });
+
+  it('should throw when cache feature is unavailable and GHES is used', () => {
+    //Arrange
+    isFeatureAvailableSpy.mockImplementation(() => {
+      return false;
+    });
+
+    process.env['GITHUB_SERVER_URL'] = 'https://nongithub.com';
+
+    let errorMessage =
+      'Cache action is only supported on GHES version >= 3.5. If you are on version >=3.5 Please check with GHES admin if Actions cache service is enabled or not.';
+
+    //Act + Assert
+    expect(() => cacheUtils.isCacheFeatureAvailable()).toThrow(errorMessage);
+  });
+});

__tests__/data/go.mod

@@ -0,0 +1,12 @@
+module example.com/mymodule
+
+go 1.14
+
+require (
+	example.com/othermodule v1.2.3
+	example.com/thismodule v1.2.3
+	example.com/thatmodule v1.2.3
+)
+
+replace example.com/thatmodule => ../thatmodule
+exclude example.com/thismodule v1.3.0

__tests__/data/versions-manifest.json

@@ -0,0 +1,102 @@
+[
+    {
+      "version": "1.17.6",
+      "stable": true,
+      "release_url": "https://github.com/actions/go-versions/releases/tag/1.17.6-1668090892",
+      "files": [
+        {
+          "filename": "go-1.17.6-darwin-x64.tar.gz",
+          "arch": "x64",
+          "platform": "darwin",
+          "download_url": "https://github.com/actions/go-versions/releases/download/1.17.6-1668090892/go-1.17.6-darwin-x64.tar.gz"
+        },
+        {
+          "filename": "go-1.17.6-linux-x64.tar.gz",
+          "arch": "x64",
+          "platform": "linux",
+          "download_url": "https://github.com/actions/go-versions/releases/download/1.17.6-1668090892/go-1.17.6-linux-x64.tar.gz"
+        },
+        {
+          "filename": "go-1.17.6-win32-x64.zip",
+          "arch": "x64",
+          "platform": "win32",
+          "download_url": "https://github.com/actions/go-versions/releases/download/1.17.6-1668090892/go-1.17.6-win32-x64.zip"
+        }
+      ]
+    },
+    {
+      "version": "1.12.17",
+      "stable": true,
+      "release_url": "https://github.com/actions/go-versions/releases/tag/1.12.17-20200616.21",
+      "files": [
+        {
+          "filename": "go-1.12.17-darwin-x64.tar.gz",
+          "arch": "x64",
+          "platform": "darwin",
+          "download_url": "https://github.com/actions/go-versions/releases/download/1.12.17-20200616.21/go-1.12.17-darwin-x64.tar.gz"
+        },
+        {
+          "filename": "go-1.12.17-linux-x64.tar.gz",
+          "arch": "x64",
+          "platform": "linux",
+          "download_url": "https://github.com/actions/go-versions/releases/download/1.12.17-20200616.21/go-1.12.17-linux-x64.tar.gz"
+        },
+        {
+          "filename": "go-1.12.17-win32-x64.zip",
+          "arch": "x64",
+          "platform": "win32",
+          "download_url": "https://github.com/actions/go-versions/releases/download/1.12.17-20200616.21/go-1.12.17-win32-x64.zip"
+        }
+      ]
+    },
+    {
+      "version": "1.12.16",
+      "stable": true,
+      "release_url": "https://github.com/actions/go-versions/releases/tag/1.12.16-20200616.20",
+      "files": [
+        {
+          "filename": "go-1.12.16-darwin-x64.tar.gz",
+          "arch": "x64",
+          "platform": "darwin",
+          "download_url": "https://github.com/actions/go-versions/releases/download/1.12.16-20200616.20/go-1.12.16-darwin-x64.tar.gz"
+        },
+        {
+          "filename": "go-1.12.16-linux-x64.tar.gz",
+          "arch": "x64",
+          "platform": "linux",
+          "download_url": "https://github.com/actions/go-versions/releases/download/1.12.16-20200616.20/go-1.12.16-linux-x64.tar.gz"
+        },
+        {
+          "filename": "go-1.12.16-win32-x64.zip",
+          "arch": "x64",
+          "platform": "win32",
+          "download_url": "https://github.com/actions/go-versions/releases/download/1.12.16-20200616.20/go-1.12.16-win32-x64.zip"
+        }
+      ]
+    },
+    {
+      "version": "1.9.7",
+      "stable": true,
+      "release_url": "https://github.com/actions/go-versions/releases/tag/1.9.7-20200616.1",
+      "files": [
+        {
+          "filename": "go-1.9.7-darwin-x64.tar.gz",
+          "arch": "x64",
+          "platform": "darwin",
+          "download_url": "https://github.com/actions/go-versions/releases/download/1.9.7/go-1.9.7-darwin-x64.tar.gz"
+        },
+        {
+          "filename": "go-1.9.7-linux-x64.tar.gz",
+          "arch": "x64",
+          "platform": "linux",
+          "download_url": "https://github.com/actions/go-versions/releases/download/1.9.7/go-1.9.7-linux-x64.tar.gz"
+        },
+        {
+          "filename": "go-1.9.7-win32-x64.zip",
+          "arch": "x64",
+          "platform": "win32",
+          "download_url": "https://github.com/actions/go-versions/releases/download/1.9.7/go-1.9.7-win32-x64.zip"
+        }
+      ]
+    }
+  ]

__tests__/installer.test.ts

@@ -1,74 +0,0 @@
-import io = require('@actions/io');
-import fs = require('fs');
-import os = require('os');
-import path = require('path');
-
-const toolDir = path.join(__dirname, 'runner', 'tools');
-const tempDir = path.join(__dirname, 'runner', 'temp');
-
-process.env['RUNNER_TOOL_CACHE'] = toolDir;
-process.env['RUNNER_TEMP'] = tempDir;
-import * as installer from '../src/installer';
-
-const IS_WINDOWS = process.platform === 'win32';
-
-describe('installer tests', () => {
-  beforeAll(async () => {
-    await io.rmRF(toolDir);
-    await io.rmRF(tempDir);
-  }, 100000);
-
-  afterAll(async () => {
-    try {
-      await io.rmRF(toolDir);
-      await io.rmRF(tempDir);
-    } catch {
-      console.log('Failed to remove test directories');
-    }
-  }, 100000);
-
-  it('Acquires version of go if no matching version is installed', async () => {
-    await installer.getGo('1.10');
-    const goDir = path.join(toolDir, 'go', '1.10.0', os.arch());
-
-    expect(fs.existsSync(`${goDir}.complete`)).toBe(true);
-    if (IS_WINDOWS) {
-      expect(fs.existsSync(path.join(goDir, 'bin', 'go.exe'))).toBe(true);
-    } else {
-      expect(fs.existsSync(path.join(goDir, 'bin', 'go'))).toBe(true);
-    }
-  }, 100000);
-
-  it('Throws if no location contains correct go version', async () => {
-    let thrown = false;
-    try {
-      await installer.getGo('1000.0');
-    } catch {
-      thrown = true;
-    }
-    expect(thrown).toBe(true);
-  });
-
-  it('Uses version of go installed in cache', async () => {
-    const goDir: string = path.join(toolDir, 'go', '250.0.0', os.arch());
-    await io.mkdirP(goDir);
-    fs.writeFileSync(`${goDir}.complete`, 'hello');
-    // This will throw if it doesn't find it in the cache (because no such version exists)
-    await installer.getGo('250.0');
-    return;
-  });
-
-  it('Doesnt use version of go that was only partially installed in cache', async () => {
-    const goDir: string = path.join(toolDir, 'go', '251.0.0', os.arch());
-    await io.mkdirP(goDir);
-    let thrown = false;
-    try {
-      // This will throw if it doesn't find it in the cache (because no such version exists)
-      await installer.getGo('251.0');
-    } catch {
-      thrown = true;
-    }
-    expect(thrown).toBe(true);
-    return;
-  });
-});

__tests__/setup-go.test.ts

@@ -0,0 +1,843 @@
+import * as core from '@actions/core';
+import * as io from '@actions/io';
+import * as tc from '@actions/tool-cache';
+import fs from 'fs';
+import cp from 'child_process';
+import osm from 'os';
+import path from 'path';
+import * as main from '../src/main';
+import * as im from '../src/installer';
+
+let goJsonData = require('./data/golang-dl.json');
+let matchers = require('../matchers.json');
+let goTestManifest = require('./data/versions-manifest.json');
+let matcherPattern = matchers.problemMatcher[0].pattern[0];
+let matcherRegExp = new RegExp(matcherPattern.regexp);
+
+describe('setup-go', () => {
+  let inputs = {} as any;
+  let os = {} as any;
+
+  let inSpy: jest.SpyInstance;
+  let getBooleanInputSpy: jest.SpyInstance;
+  let exportVarSpy: jest.SpyInstance;
+  let findSpy: jest.SpyInstance;
+  let cnSpy: jest.SpyInstance;
+  let logSpy: jest.SpyInstance;
+  let getSpy: jest.SpyInstance;
+  let platSpy: jest.SpyInstance;
+  let archSpy: jest.SpyInstance;
+  let dlSpy: jest.SpyInstance;
+  let extractTarSpy: jest.SpyInstance;
+  let cacheSpy: jest.SpyInstance;
+  let dbgSpy: jest.SpyInstance;
+  let whichSpy: jest.SpyInstance;
+  let existsSpy: jest.SpyInstance;
+  let readFileSpy: jest.SpyInstance;
+  let mkdirpSpy: jest.SpyInstance;
+  let execSpy: jest.SpyInstance;
+  let getManifestSpy: jest.SpyInstance;
+
+  beforeAll(async () => {
+    process.env['GITHUB_ENV'] = ''; // Stub out Environment file functionality so we can verify it writes to standard out (toolkit is backwards compatible)
+  }, 100000);
+
+  beforeEach(() => {
+    process.env['GITHUB_PATH'] = ''; // Stub out ENV file functionality so we can verify it writes to standard out
+
+    // @actions/core
+    inputs = {};
+    inSpy = jest.spyOn(core, 'getInput');
+    inSpy.mockImplementation(name => inputs[name]);
+    getBooleanInputSpy = jest.spyOn(core, 'getBooleanInput');
+    getBooleanInputSpy.mockImplementation(name => inputs[name]);
+    exportVarSpy = jest.spyOn(core, 'exportVariable');
+
+    // node
+    os = {};
+    platSpy = jest.spyOn(osm, 'platform');
+    platSpy.mockImplementation(() => os['platform']);
+    archSpy = jest.spyOn(osm, 'arch');
+    archSpy.mockImplementation(() => os['arch']);
+    execSpy = jest.spyOn(cp, 'execSync');
+
+    // @actions/tool-cache
+    findSpy = jest.spyOn(tc, 'find');
+    dlSpy = jest.spyOn(tc, 'downloadTool');
+    extractTarSpy = jest.spyOn(tc, 'extractTar');
+    cacheSpy = jest.spyOn(tc, 'cacheDir');
+    getSpy = jest.spyOn(im, 'getVersionsDist');
+    getManifestSpy = jest.spyOn(tc, 'getManifestFromRepo');
+
+    // io
+    whichSpy = jest.spyOn(io, 'which');
+    existsSpy = jest.spyOn(fs, 'existsSync');
+    readFileSpy = jest.spyOn(fs, 'readFileSync');
+    mkdirpSpy = jest.spyOn(io, 'mkdirP');
+
+    // gets
+    getManifestSpy.mockImplementation(() => <tc.IToolRelease[]>goTestManifest);
+
+    // writes
+    cnSpy = jest.spyOn(process.stdout, 'write');
+    logSpy = jest.spyOn(core, 'info');
+    dbgSpy = jest.spyOn(core, 'debug');
+    getSpy.mockImplementation(() => <im.IGoVersion[] | null>goJsonData);
+    cnSpy.mockImplementation(line => {
+      // uncomment to debug
+      // process.stderr.write('write:' + line + '\n');
+    });
+    logSpy.mockImplementation(line => {
+      // uncomment to debug
+      //process.stderr.write('log:' + line + '\n');
+    });
+    dbgSpy.mockImplementation(msg => {
+      // uncomment to see debug output
+      // process.stderr.write(msg + '\n');
+    });
+  });
+
+  afterEach(() => {
+    //jest.resetAllMocks();
+    jest.clearAllMocks();
+    //jest.restoreAllMocks();
+  });
+
+  afterAll(async () => {
+    jest.restoreAllMocks();
+  }, 100000);
+
+  it('can extract the major.minor.patch version from a given Go version string', async () => {
+    const goVersionOutput = 'go version go1.16.6 darwin/amd64';
+    expect(main.parseGoVersion(goVersionOutput)).toBe('1.16.6');
+  });
+
+  it('can find 1.9.7 from manifest on osx', async () => {
+    os.platform = 'darwin';
+    os.arch = 'x64';
+
+    let match = await im.getInfoFromManifest('1.9.7', true, 'mocktoken');
+    expect(match).toBeDefined();
+    expect(match!.resolvedVersion).toBe('1.9.7');
+    expect(match!.type).toBe('manifest');
+    expect(match!.downloadUrl).toBe(
+      'https://github.com/actions/go-versions/releases/download/1.9.7/go-1.9.7-darwin-x64.tar.gz'
+    );
+  });
+
+  it('can find 1.9 from manifest on linux', async () => {
+    os.platform = 'linux';
+    os.arch = 'x64';
+
+    let match = await im.getInfoFromManifest('1.9.7', true, 'mocktoken');
+    expect(match).toBeDefined();
+    expect(match!.resolvedVersion).toBe('1.9.7');
+    expect(match!.type).toBe('manifest');
+    expect(match!.downloadUrl).toBe(
+      'https://github.com/actions/go-versions/releases/download/1.9.7/go-1.9.7-linux-x64.tar.gz'
+    );
+  });
+
+  it('can find 1.9 from manifest on windows', async () => {
+    os.platform = 'win32';
+    os.arch = 'x64';
+
+    let match = await im.getInfoFromManifest('1.9.7', true, 'mocktoken');
+    expect(match).toBeDefined();
+    expect(match!.resolvedVersion).toBe('1.9.7');
+    expect(match!.type).toBe('manifest');
+    expect(match!.downloadUrl).toBe(
+      'https://github.com/actions/go-versions/releases/download/1.9.7/go-1.9.7-win32-x64.zip'
+    );
+  });
+
+  it('finds stable match for exact dot zero version', async () => {
+    os.platform = 'darwin';
+    os.arch = 'x64';
+
+    // spec: 1.13.0 => 1.13
+    let match: im.IGoVersion | undefined = await im.findMatch('1.13.0');
+    expect(match).toBeDefined();
+    let version: string = match ? match.version : '';
+    expect(version).toBe('go1.13');
+    let fileName = match ? match.files[0].filename : '';
+    expect(fileName).toBe('go1.13.darwin-amd64.tar.gz');
+  });
+
+  it('finds latest patch version for minor version spec', async () => {
+    os.platform = 'linux';
+    os.arch = 'x64';
+
+    // spec: 1.13 => 1.13.7 (latest)
+    let match: im.IGoVersion | undefined = await im.findMatch('1.13');
+    expect(match).toBeDefined();
+    let version: string = match ? match.version : '';
+    expect(version).toBe('go1.13.7');
+    let fileName = match ? match.files[0].filename : '';
+    expect(fileName).toBe('go1.13.7.linux-amd64.tar.gz');
+  });
+
+  it('finds latest patch version for caret version spec', async () => {
+    os.platform = 'linux';
+    os.arch = 'x64';
+
+    // spec: ^1.13.6 => 1.13.7
+    let match: im.IGoVersion | undefined = await im.findMatch('^1.13.6');
+    expect(match).toBeDefined();
+    let version: string = match ? match.version : '';
+    expect(version).toBe('go1.13.7');
+    let fileName = match ? match.files[0].filename : '';
+    expect(fileName).toBe('go1.13.7.linux-amd64.tar.gz');
+  });
+
+  it('finds latest version for major version spec', async () => {
+    os.platform = 'win32';
+    os.arch = 'x32';
+
+    // spec: 1 => 1.13.7 (latest)
+    let match: im.IGoVersion | undefined = await im.findMatch('1');
+    expect(match).toBeDefined();
+    let version: string = match ? match.version : '';
+    expect(version).toBe('go1.13.7');
+    let fileName = match ? match.files[0].filename : '';
+    expect(fileName).toBe('go1.13.7.windows-386.zip');
+  });
+
+  it('finds unstable pre-release version', async () => {
+    os.platform = 'linux';
+    os.arch = 'x64';
+
+    // spec: 1.14, stable=false => go1.14rc1
+    let match: im.IGoVersion | undefined = await im.findMatch('1.14.0-rc.1');
+    expect(match).toBeDefined();
+    let version: string = match ? match.version : '';
+    expect(version).toBe('go1.14rc1');
+    let fileName = match ? match.files[0].filename : '';
+    expect(fileName).toBe('go1.14rc1.linux-amd64.tar.gz');
+  });
+
+  it('evaluates to stable with input as true', async () => {
+    inputs['go-version'] = '1.13.0';
+    inputs.stable = 'true';
+
+    let toolPath = path.normalize('/cache/go/1.13.0/x64');
+    findSpy.mockImplementation(() => toolPath);
+    await main.run();
+
+    expect(logSpy).toHaveBeenCalledWith(`Setup go version spec 1.13.0`);
+  });
+
+  it('evaluates to stable with no input', async () => {
+    inputs['go-version'] = '1.13.0';
+
+    inSpy.mockImplementation(name => inputs[name]);
+
+    let toolPath = path.normalize('/cache/go/1.13.0/x64');
+    findSpy.mockImplementation(() => toolPath);
+    await main.run();
+
+    expect(logSpy).toHaveBeenCalledWith(`Setup go version spec 1.13.0`);
+  });
+
+  it('does not export any variables for Go versions >=1.9', async () => {
+    inputs['go-version'] = '1.13.0';
+    inSpy.mockImplementation(name => inputs[name]);
+
+    let toolPath = path.normalize('/cache/go/1.13.0/x64');
+    findSpy.mockImplementation(() => toolPath);
+
+    let vars: {[key: string]: string} = {};
+    exportVarSpy.mockImplementation((name: string, val: string) => {
+      vars[name] = val;
+    });
+
+    await main.run();
+    expect(vars).toStrictEqual({});
+  });
+
+  it('exports GOROOT for Go versions <1.9', async () => {
+    inputs['go-version'] = '1.8';
+    inSpy.mockImplementation(name => inputs[name]);
+
+    let toolPath = path.normalize('/cache/go/1.8.0/x64');
+    findSpy.mockImplementation(() => toolPath);
+
+    let vars: {[key: string]: string} = {};
+    exportVarSpy.mockImplementation((name: string, val: string) => {
+      vars[name] = val;
+    });
+
+    await main.run();
+    expect(vars).toStrictEqual({
+      GOROOT: toolPath
+    });
+  });
+
+  it('finds a version of go already in the cache', async () => {
+    inputs['go-version'] = '1.13.0';
+
+    let toolPath = path.normalize('/cache/go/1.13.0/x64');
+    findSpy.mockImplementation(() => toolPath);
+    await main.run();
+
+    let expPath = path.join(toolPath, 'bin');
+    expect(logSpy).toHaveBeenCalledWith(`Found in cache @ ${toolPath}`);
+  });
+
+  it('finds a version in the cache and adds it to the path', async () => {
+    inputs['go-version'] = '1.13.0';
+    let toolPath = path.normalize('/cache/go/1.13.0/x64');
+    findSpy.mockImplementation(() => toolPath);
+    await main.run();
+
+    let expPath = path.join(toolPath, 'bin');
+    expect(cnSpy).toHaveBeenCalledWith(`::add-path::${expPath}${osm.EOL}`);
+  });
+
+  it('handles unhandled error and reports error', async () => {
+    let errMsg = 'unhandled error message';
+    inputs['go-version'] = '1.13.0';
+
+    findSpy.mockImplementation(() => {
+      throw new Error(errMsg);
+    });
+    await main.run();
+    expect(cnSpy).toHaveBeenCalledWith('::error::' + errMsg + osm.EOL);
+  });
+
+  it('downloads a version not in the cache', async () => {
+    os.platform = 'linux';
+    os.arch = 'x64';
+
+    inputs['go-version'] = '1.13.1';
+
+    findSpy.mockImplementation(() => '');
+    dlSpy.mockImplementation(() => '/some/temp/path');
+    let toolPath = path.normalize('/cache/go/1.13.0/x64');
+    extractTarSpy.mockImplementation(() => '/some/other/temp/path');
+    cacheSpy.mockImplementation(() => toolPath);
+    await main.run();
+
+    let expPath = path.join(toolPath, 'bin');
+
+    expect(dlSpy).toHaveBeenCalled();
+    expect(extractTarSpy).toHaveBeenCalled();
+    expect(cnSpy).toHaveBeenCalledWith(`::add-path::${expPath}${osm.EOL}`);
+  });
+
+  it('does not find a version that does not exist', async () => {
+    os.platform = 'linux';
+    os.arch = 'x64';
+
+    inputs['go-version'] = '9.99.9';
+
+    findSpy.mockImplementation(() => '');
+    await main.run();
+
+    expect(cnSpy).toHaveBeenCalledWith(
+      `::error::Unable to find Go version '9.99.9' for platform linux and architecture x64.${osm.EOL}`
+    );
+  });
+
+  it('downloads a version from a manifest match', async () => {
+    os.platform = 'linux';
+    os.arch = 'x64';
+
+    let versionSpec = '1.12.16';
+
+    inputs['go-version'] = versionSpec;
+    inputs['token'] = 'faketoken';
+
+    let expectedUrl =
+      'https://github.com/actions/go-versions/releases/download/1.12.16-20200616.20/go-1.12.16-linux-x64.tar.gz';
+
+    // ... but not in the local cache
+    findSpy.mockImplementation(() => '');
+
+    dlSpy.mockImplementation(async () => '/some/temp/path');
+    let toolPath = path.normalize('/cache/go/1.12.16/x64');
+    extractTarSpy.mockImplementation(async () => '/some/other/temp/path');
+    cacheSpy.mockImplementation(async () => toolPath);
+
+    await main.run();
+
+    let expPath = path.join(toolPath, 'bin');
+
+    expect(dlSpy).toHaveBeenCalled();
+    expect(extractTarSpy).toHaveBeenCalled();
+    expect(logSpy).not.toHaveBeenCalledWith(
+      'Not found in manifest.  Falling back to download directly from Go'
+    );
+    expect(logSpy).toHaveBeenCalledWith(
+      `Acquiring 1.12.16 from ${expectedUrl}`
+    );
+
+    expect(logSpy).toHaveBeenCalledWith(`Added go to the path`);
+    expect(cnSpy).toHaveBeenCalledWith(`::add-path::${expPath}${osm.EOL}`);
+  });
+
+  it('downloads a major and minor from a manifest match', async () => {
+    os.platform = 'linux';
+    os.arch = 'x64';
+
+    let versionSpec = '1.12';
+
+    inputs['go-version'] = versionSpec;
+    inputs['token'] = 'faketoken';
+
+    let expectedUrl =
+      'https://github.com/actions/go-versions/releases/download/1.12.17-20200616.21/go-1.12.17-linux-x64.tar.gz';
+
+    // ... but not in the local cache
+    findSpy.mockImplementation(() => '');
+
+    dlSpy.mockImplementation(async () => '/some/temp/path');
+    let toolPath = path.normalize('/cache/go/1.12.17/x64');
+    extractTarSpy.mockImplementation(async () => '/some/other/temp/path');
+    cacheSpy.mockImplementation(async () => toolPath);
+
+    await main.run();
+
+    let expPath = path.join(toolPath, 'bin');
+
+    expect(dlSpy).toHaveBeenCalled();
+    expect(extractTarSpy).toHaveBeenCalled();
+    expect(logSpy).not.toHaveBeenCalledWith(
+      'Not found in manifest.  Falling back to download directly from Go'
+    );
+    expect(logSpy).toHaveBeenCalledWith(
+      `Acquiring 1.12.17 from ${expectedUrl}`
+    );
+
+    expect(logSpy).toHaveBeenCalledWith(`Added go to the path`);
+    expect(cnSpy).toHaveBeenCalledWith(`::add-path::${expPath}${osm.EOL}`);
+  });
+
+  it('falls back to a version from node dist', async () => {
+    os.platform = 'linux';
+    os.arch = 'x64';
+
+    let versionSpec = '1.12.14';
+
+    inputs['go-version'] = versionSpec;
+    inputs['token'] = 'faketoken';
+
+    let expectedUrl =
+      'https://github.com/actions/go-versions/releases/download/1.12.14-20200616.18/go-1.12.14-linux-x64.tar.gz';
+
+    // ... but not in the local cache
+    findSpy.mockImplementation(() => '');
+
+    dlSpy.mockImplementation(async () => '/some/temp/path');
+    let toolPath = path.normalize('/cache/go/1.12.14/x64');
+    extractTarSpy.mockImplementation(async () => '/some/other/temp/path');
+    cacheSpy.mockImplementation(async () => toolPath);
+
+    await main.run();
+
+    let expPath = path.join(toolPath, 'bin');
+    expect(logSpy).toHaveBeenCalledWith('Setup go version spec 1.12.14');
+    expect(findSpy).toHaveBeenCalled();
+    expect(logSpy).toHaveBeenCalledWith('Attempting to download 1.12.14...');
+    expect(dlSpy).toHaveBeenCalled();
+    expect(logSpy).toHaveBeenCalledWith('matching 1.12.14...');
+    expect(extractTarSpy).toHaveBeenCalled();
+    expect(logSpy).toHaveBeenCalledWith(
+      'Not found in manifest.  Falling back to download directly from Go'
+    );
+    expect(logSpy).toHaveBeenCalledWith(`Install from dist`);
+    expect(logSpy).toHaveBeenCalledWith(`Added go to the path`);
+    expect(cnSpy).toHaveBeenCalledWith(`::add-path::${expPath}${osm.EOL}`);
+  });
+
+  it('reports a failed download', async () => {
+    let errMsg = 'unhandled download message';
+    os.platform = 'linux';
+    os.arch = 'x64';
+
+    inputs['go-version'] = '1.13.1';
+
+    findSpy.mockImplementation(() => '');
+    dlSpy.mockImplementation(() => {
+      throw new Error(errMsg);
+    });
+    await main.run();
+
+    expect(cnSpy).toHaveBeenCalledWith(
+      `::error::Failed to download version 1.13.1: Error: ${errMsg}${osm.EOL}`
+    );
+  });
+
+  it('does not add BIN if go is not in path', async () => {
+    whichSpy.mockImplementation(async () => {
+      return '';
+    });
+    let added = await main.addBinToPath();
+    expect(added).toBeFalsy();
+  });
+
+  it('adds bin if dir not exists', async () => {
+    whichSpy.mockImplementation(async () => {
+      return '/usr/local/go/bin/go';
+    });
+
+    execSpy.mockImplementation(() => {
+      return '/Users/testuser/go';
+    });
+
+    mkdirpSpy.mockImplementation(async () => {});
+    existsSpy.mockImplementation(path => {
+      return false;
+    });
+
+    let added = await main.addBinToPath();
+    expect(added).toBeTruthy;
+  });
+
+  interface Annotation {
+    file: string;
+    line: number;
+    column: number;
+    message: string;
+  }
+
+  //
+  // problem matcher regex pattern tests
+
+  function testMatch(line: string): Annotation {
+    let annotation = <Annotation>{};
+
+    let match = matcherRegExp.exec(line);
+    if (match) {
+      annotation.line = parseInt(match[matcherPattern.line], 10);
+      annotation.column = parseInt(match[matcherPattern.column], 10);
+      annotation.file = match[matcherPattern.file].trim();
+      annotation.message = match[matcherPattern.message].trim();
+    }
+
+    return annotation;
+  }
+
+  it('matches on relative unix path', async () => {
+    let line = './main.go:13:2: undefined: fmt.Printl';
+    let annotation = testMatch(line);
+    expect(annotation).toBeDefined();
+    expect(annotation.line).toBe(13);
+    expect(annotation.column).toBe(2);
+    expect(annotation.file).toBe('./main.go');
+    expect(annotation.message).toBe('undefined: fmt.Printl');
+  });
+
+  it('matches on unix path up the tree', async () => {
+    let line = '../main.go:13:2: undefined: fmt.Printl';
+    let annotation = testMatch(line);
+    expect(annotation).toBeDefined();
+    expect(annotation.line).toBe(13);
+    expect(annotation.column).toBe(2);
+    expect(annotation.file).toBe('../main.go');
+    expect(annotation.message).toBe('undefined: fmt.Printl');
+  });
+
+  it('matches on unix path down the tree', async () => {
+    let line = 'foo/main.go:13:2: undefined: fmt.Printl';
+    let annotation = testMatch(line);
+    expect(annotation).toBeDefined();
+    expect(annotation.line).toBe(13);
+    expect(annotation.column).toBe(2);
+    expect(annotation.file).toBe('foo/main.go');
+    expect(annotation.message).toBe('undefined: fmt.Printl');
+  });
+
+  it('matches on rooted unix path', async () => {
+    let line = '/assert.go:4:1: missing return at end of function';
+    let annotation = testMatch(line);
+    expect(annotation).toBeDefined();
+    expect(annotation.line).toBe(4);
+    expect(annotation.column).toBe(1);
+    expect(annotation.file).toBe('/assert.go');
+    expect(annotation.message).toBe('missing return at end of function');
+  });
+
+  it('matches on unix path with spaces', async () => {
+    let line = '   ./assert.go:5:2: missing return at end of function   ';
+    let annotation = testMatch(line);
+    expect(annotation).toBeDefined();
+    expect(annotation.line).toBe(5);
+    expect(annotation.column).toBe(2);
+    expect(annotation.file).toBe('./assert.go');
+    expect(annotation.message).toBe('missing return at end of function');
+  });
+
+  it('matches on unix path with tabs', async () => {
+    let line = '\t./assert.go:5:2: missing return at end of function   ';
+    let annotation = testMatch(line);
+    expect(annotation).toBeDefined();
+    expect(annotation.line).toBe(5);
+    expect(annotation.column).toBe(2);
+    expect(annotation.file).toBe('./assert.go');
+    expect(annotation.message).toBe('missing return at end of function');
+  });
+
+  it('matches on relative windows path', async () => {
+    let line = '.\\main.go:13:2: undefined: fmt.Printl';
+    let annotation = testMatch(line);
+    expect(annotation).toBeDefined();
+    expect(annotation.line).toBe(13);
+    expect(annotation.column).toBe(2);
+    expect(annotation.file).toBe('.\\main.go');
+    expect(annotation.message).toBe('undefined: fmt.Printl');
+  });
+
+  it('matches on windows path up the tree', async () => {
+    let line = '..\\main.go:13:2: undefined: fmt.Printl';
+    let annotation = testMatch(line);
+    expect(annotation).toBeDefined();
+    expect(annotation.line).toBe(13);
+    expect(annotation.column).toBe(2);
+    expect(annotation.file).toBe('..\\main.go');
+    expect(annotation.message).toBe('undefined: fmt.Printl');
+  });
+
+  // 1.13.1 => 1.13.1
+  // 1.13 => 1.13.0
+  // 1.10beta1 => 1.10.0-beta.1, 1.10rc1 => 1.10.0-rc.1
+  // 1.8.5beta1 => 1.8.5-beta.1, 1.8.5rc1 => 1.8.5-rc.1
+  it('converts prerelease versions', async () => {
+    expect(im.makeSemver('1.10beta1')).toBe('1.10.0-beta.1');
+    expect(im.makeSemver('1.10rc1')).toBe('1.10.0-rc.1');
+  });
+
+  it('converts dot zero versions', async () => {
+    expect(im.makeSemver('1.13')).toBe('1.13.0');
+  });
+
+  it('does not convert exact versions', async () => {
+    expect(im.makeSemver('1.13.1')).toBe('1.13.1');
+  });
+
+  describe('check-latest flag', () => {
+    it("use local version and don't check manifest if check-latest is not specified", async () => {
+      os.platform = 'linux';
+      os.arch = 'x64';
+
+      inputs['go-version'] = '1.16';
+      inputs['check-latest'] = false;
+
+      const toolPath = path.normalize('/cache/go/1.16.1/x64');
+      findSpy.mockReturnValue(toolPath);
+      await main.run();
+
+      expect(logSpy).toHaveBeenCalledWith(`Found in cache @ ${toolPath}`);
+      expect(logSpy).not.toHaveBeenCalledWith(
+        'Attempting to resolve the latest version from the manifest...'
+      );
+    });
+
+    it('check latest version and resolve it from local cache', async () => {
+      os.platform = 'linux';
+      os.arch = 'x64';
+
+      inputs['go-version'] = '1.16';
+      inputs['check-latest'] = true;
+
+      const toolPath = path.normalize('/cache/go/1.16.1/x64');
+      findSpy.mockReturnValue(toolPath);
+      dlSpy.mockImplementation(async () => '/some/temp/path');
+      extractTarSpy.mockImplementation(async () => '/some/other/temp/path');
+      cacheSpy.mockImplementation(async () => toolPath);
+
+      await main.run();
+
+      expect(logSpy).toHaveBeenCalledWith('Setup go version spec 1.16');
+      expect(logSpy).toHaveBeenCalledWith(`Found in cache @ ${toolPath}`);
+    });
+
+    it('check latest version and install it from manifest', async () => {
+      os.platform = 'linux';
+      os.arch = 'x64';
+
+      const versionSpec = '1.17';
+      const patchVersion = '1.17.6';
+      inputs['go-version'] = versionSpec;
+      inputs['stable'] = 'true';
+      inputs['check-latest'] = true;
+
+      findSpy.mockImplementation(() => '');
+      dlSpy.mockImplementation(async () => '/some/temp/path');
+      const toolPath = path.normalize('/cache/go/1.17.5/x64');
+      extractTarSpy.mockImplementation(async () => '/some/other/temp/path');
+      cacheSpy.mockImplementation(async () => toolPath);
+      const expectedUrl =
+        'https://github.com/actions/go-versions/releases/download/1.17.6-1668090892/go-1.17.6-darwin-x64.tar.gz';
+
+      await main.run();
+
+      expect(logSpy).toHaveBeenCalledWith(
+        `Setup go version spec ${versionSpec}`
+      );
+      expect(logSpy).toHaveBeenCalledWith(
+        'Attempting to resolve the latest version from the manifest...'
+      );
+      expect(logSpy).toHaveBeenCalledWith(`Resolved as '${patchVersion}'`);
+      expect(logSpy).toHaveBeenCalledWith(
+        `Attempting to download ${patchVersion}...`
+      );
+      expect(logSpy).toHaveBeenCalledWith('Extracting Go...');
+      expect(logSpy).toHaveBeenCalledWith('Adding to the cache ...');
+      expect(logSpy).toHaveBeenCalledWith('Added go to the path');
+      expect(logSpy).toHaveBeenCalledWith(
+        `Successfully set up Go version ${versionSpec}`
+      );
+    });
+
+    it('fallback to dist if version is not found in manifest', async () => {
+      os.platform = 'linux';
+      os.arch = 'x64';
+
+      let versionSpec = '1.13';
+
+      inputs['go-version'] = versionSpec;
+      inputs['check-latest'] = true;
+      inputs['always-auth'] = false;
+      inputs['token'] = 'faketoken';
+
+      // ... but not in the local cache
+      findSpy.mockImplementation(() => '');
+
+      dlSpy.mockImplementation(async () => '/some/temp/path');
+      let toolPath = path.normalize('/cache/go/1.13.7/x64');
+      extractTarSpy.mockImplementation(async () => '/some/other/temp/path');
+      cacheSpy.mockImplementation(async () => toolPath);
+
+      await main.run();
+
+      let expPath = path.join(toolPath, 'bin');
+
+      expect(dlSpy).toHaveBeenCalled();
+      expect(extractTarSpy).toHaveBeenCalled();
+      expect(logSpy).toHaveBeenCalledWith(
+        'Attempting to resolve the latest version from the manifest...'
+      );
+      expect(logSpy).toHaveBeenCalledWith(
+        `Failed to resolve version ${versionSpec} from manifest`
+      );
+      expect(logSpy).toHaveBeenCalledWith(
+        `Attempting to download ${versionSpec}...`
+      );
+      expect(cnSpy).toHaveBeenCalledWith(`::add-path::${expPath}${osm.EOL}`);
+    });
+
+    it('fallback to dist if manifest is not available', async () => {
+      os.platform = 'linux';
+      os.arch = 'x64';
+
+      let versionSpec = '1.13';
+
+      process.env['GITHUB_PATH'] = '';
+
+      inputs['go-version'] = versionSpec;
+      inputs['check-latest'] = true;
+      inputs['always-auth'] = false;
+      inputs['token'] = 'faketoken';
+
+      // ... but not in the local cache
+      findSpy.mockImplementation(() => '');
+      getManifestSpy.mockImplementation(() => {
+        throw new Error('Unable to download manifest');
+      });
+
+      dlSpy.mockImplementation(async () => '/some/temp/path');
+      let toolPath = path.normalize('/cache/go/1.13.7/x64');
+      extractTarSpy.mockImplementation(async () => '/some/other/temp/path');
+      cacheSpy.mockImplementation(async () => toolPath);
+
+      await main.run();
+
+      let expPath = path.join(toolPath, 'bin');
+
+      expect(logSpy).toHaveBeenCalledWith(
+        `Failed to resolve version ${versionSpec} from manifest`
+      );
+      expect(dlSpy).toHaveBeenCalled();
+      expect(extractTarSpy).toHaveBeenCalled();
+      expect(logSpy).toHaveBeenCalledWith(
+        'Attempting to resolve the latest version from the manifest...'
+      );
+      expect(logSpy).toHaveBeenCalledWith(
+        'Unable to resolve a version from the manifest...'
+      );
+      expect(logSpy).toHaveBeenCalledWith(
+        `Failed to resolve version ${versionSpec} from manifest`
+      );
+      expect(logSpy).toHaveBeenCalledWith(
+        `Attempting to download ${versionSpec}...`
+      );
+
+      expect(cnSpy).toHaveBeenCalledWith(`::add-path::${expPath}${osm.EOL}`);
+    });
+  });
+
+  describe('go-version-file', () => {
+    const goModContents = `module example.com/mymodule
+
+go 1.14
+
+require (
+	example.com/othermodule v1.2.3
+	example.com/thismodule v1.2.3
+	example.com/thatmodule v1.2.3
+)
+
+replace example.com/thatmodule => ../thatmodule
+exclude example.com/thismodule v1.3.0
+`;
+
+    it('reads version from go.mod', async () => {
+      inputs['go-version-file'] = 'go.mod';
+      existsSpy.mockImplementation(path => true);
+      readFileSpy.mockImplementation(() => Buffer.from(goModContents));
+
+      await main.run();
+
+      expect(logSpy).toHaveBeenCalledWith('Setup go version spec 1.14');
+      expect(logSpy).toHaveBeenCalledWith('Attempting to download 1.14...');
+      expect(logSpy).toHaveBeenCalledWith('matching 1.14...');
+    });
+
+    it('reads version from .go-version', async () => {
+      inputs['go-version-file'] = '.go-version';
+      existsSpy.mockImplementation(path => true);
+      readFileSpy.mockImplementation(() => Buffer.from(`1.13.0${osm.EOL}`));
+
+      await main.run();
+
+      expect(logSpy).toHaveBeenCalledWith('Setup go version spec 1.13.0');
+      expect(logSpy).toHaveBeenCalledWith('Attempting to download 1.13.0...');
+      expect(logSpy).toHaveBeenCalledWith('matching 1.13.0...');
+    });
+
+    it('is overwritten by go-version', async () => {
+      inputs['go-version'] = '1.13.1';
+      inputs['go-version-file'] = 'go.mod';
+      existsSpy.mockImplementation(path => true);
+      readFileSpy.mockImplementation(() => Buffer.from(goModContents));
+
+      await main.run();
+
+      expect(logSpy).toHaveBeenCalledWith('Setup go version spec 1.13.1');
+      expect(logSpy).toHaveBeenCalledWith('Attempting to download 1.13.1...');
+      expect(logSpy).toHaveBeenCalledWith('matching 1.13.1...');
+    });
+
+    it('reports a read failure', async () => {
+      inputs['go-version-file'] = 'go.mod';
+      existsSpy.mockImplementation(path => false);
+
+      await main.run();
+
+      expect(cnSpy).toHaveBeenCalledWith(
+        `::error::The specified go version file at: go.mod does not exist${osm.EOL}`
+      );
+    });
+  });
+});

__tests__/verify-go.sh

@@ -0,0 +1,14 @@
+  
+#!/bin/sh
+
+if [ -z "$1" ]; then
+  echo "Must supply go version argument"
+  exit 1
+fi
+
+go_version="$(go version)"
+echo "Found go version '$go_version'"
+if [ -z "$(echo $go_version | grep $1)" ]; then
+  echo "Unexpected version"
+  exit 1
+fi

action.yml

@@ -1,10 +1,29 @@
-name: 'Setup Go for use with actions'
-description: 'Setup a Go environment and add it to the PATH, additionally providing proxy support'
+name: 'Setup Go environment'
+description: 'Setup a Go environment and add it to the PATH'
 author: 'GitHub'
-inputs: 
-  version:
-    description: 'The Go version to download (if necessary) and use. Example: 1.9.3'
-    default: '1.10'
+inputs:
+  go-version:
+    description: 'The Go version to download (if necessary) and use. Supports semver spec and ranges.'
+  go-version-file:
+    description: 'Path to the go.mod file.'
+  check-latest:
+    description: 'Set this option to true if you want the action to always check for the latest available version that satisfies the version spec'
+    default: false
+  token:
+    description: Used to pull node distributions from go-versions.  Since there's a default, this is typically not supplied by the user.
+    default: ${{ github.token }}
+  cache:
+    description: Used to specify whether caching is needed. Set to true, if you'd like to enable caching.
+    default: false
+  cache-dependency-path:
+    description: 'Used to specify the path to a dependency file - go.sum'
+outputs:
+  go-version:
+    description: 'The installed Go version. Useful when given a version range as input.'  
+  cache-hit: 
+    description: 'A boolean value to indicate if a cache was hit'
 runs:
-  using: 'node12'
-  main: 'lib/setup-go.js'
+  using: 'node16'
+  main: 'dist/setup/index.js'
+  post: 'dist/cache-save/index.js'
+  post-if: success()

docs/adrs/0000-caching-dependencies.md

@@ -0,0 +1,69 @@
+# 0. Caching dependencies
+Date: 2022-04-13
+
+Status: Accepted
+
+# Context
+`actions/setup-go` is the one of the most popular action related to Golang in GitHub Actions. Many customers use it in conjunction with [actions/cache](https://github.com/actions/cache) to speed up dependency installation process.  
+See more examples on proper usage in [actions/cache documentation](https://github.com/actions/cache/blob/main/examples.md#go---modules).
+
+# Goals & Anti-Goals
+Integration of caching functionality into `actions/setup-go` action will bring the following benefits for action users:
+- Decrease the entry threshold for using the cache for Go dependencies and simplify initial configuration
+- Simplify YAML pipelines because there will be no need for additional steps to enable caching
+- More users will use cache for Go so more customers will have fast builds!
+
+We don't pursue the goal to provide wide customization of caching in scope of `actions/setup-go` action. The purpose of this integration is covering ~90% of basic use-cases. If user needs flexible customization, we should advice them to use `actions/cache` directly.
+
+# Decision
+- Add `cache` input parameter to `actions/setup-go`. For now, input will accept the following values: 
+  - `true` - enable caching for go dependencies
+  - `false`- disable caching for go dependencies. This value will be set as default value
+- Cache feature will be disabled by default to make sure that we don't break existing customers. We will consider enabling cache by default in next major releases
+- Action will try to search a go.sum files in the repository and throw error in the scenario that it was not found
+- The hash of found file will be used as cache key (the same approach like [actions/cache](https://github.com/actions/cache/blob/main/examples.md#go---modules) recommends)
+- The following key cache will be used `${{ runner.os }}-go${{ go-version }}-${{ hashFiles('<go.sum-path>') }}`
+- Action will cache global cache from the `go env GOMODCACHE` and `go env GOCACHE` commands.
+- Add a `cache-dependency-path` input parameter to `actions/setup-go`. The new input will accept an array or regex of dependency files. The field will accept a path (relative to the repository root) to dependency files. If the provided path contains wildcards, the action will search all matching files and calculate a common hash like the ${{ hashFiles('**/go.sum') }} YAML construction does.
+
+# Example of real use-cases
+
+ - With cache
+
+```yml
+steps:
+- uses: actions/checkout@v3
+- uses: actions/setup-go@v3
+  with:
+    go-version: '18'
+    cache: true
+```
+
+ - With cache-dependency-path
+
+ ```yml
+steps:
+- uses: actions/checkout@v3
+- uses: actions/setup-go@v3
+  with:
+    go-version: '18'
+    cache: true
+    cache-dependency-path: **/go.sum
+```
+
+ ```yml
+steps:
+- uses: actions/checkout@v3
+- uses: actions/setup-go@v3
+  with:
+    go-version: '18'
+    cache: true
+    cache-dependency-path: |
+        **/go.sum
+        **/go.mod
+```
+
+# Release process
+
+As soon as functionality is implemented, we will release minor update of action. No need to bump major version since there are no breaking changes for existing users.
+After that, we will update [starter-workflows](https://github.com/actions/starter-workflows/blob/main/ci/go.yml)

lib/installer.js

@@ -1,134 +0,0 @@
-"use strict";
-var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
-    return new (P || (P = Promise))(function (resolve, reject) {
-        function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
-        function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }
-        function step(result) { result.done ? resolve(result.value) : new P(function (resolve) { resolve(result.value); }).then(fulfilled, rejected); }
-        step((generator = generator.apply(thisArg, _arguments || [])).next());
-    });
-};
-var __importStar = (this && this.__importStar) || function (mod) {
-    if (mod && mod.__esModule) return mod;
-    var result = {};
-    if (mod != null) for (var k in mod) if (Object.hasOwnProperty.call(mod, k)) result[k] = mod[k];
-    result["default"] = mod;
-    return result;
-};
-Object.defineProperty(exports, "__esModule", { value: true });
-// Load tempDirectory before it gets wiped by tool-cache
-let tempDirectory = process.env['RUNNER_TEMPDIRECTORY'] || '';
-const core = __importStar(require("@actions/core"));
-const tc = __importStar(require("@actions/tool-cache"));
-const os = __importStar(require("os"));
-const path = __importStar(require("path"));
-const util = __importStar(require("util"));
-let osPlat = os.platform();
-let osArch = os.arch();
-if (!tempDirectory) {
-    let baseLocation;
-    if (process.platform === 'win32') {
-        // On windows use the USERPROFILE env variable
-        baseLocation = process.env['USERPROFILE'] || 'C:\\';
-    }
-    else {
-        if (process.platform === 'darwin') {
-            baseLocation = '/Users';
-        }
-        else {
-            baseLocation = '/home';
-        }
-    }
-    tempDirectory = path.join(baseLocation, 'actions', 'temp');
-}
-function getGo(version) {
-    return __awaiter(this, void 0, void 0, function* () {
-        // check cache
-        let toolPath;
-        toolPath = tc.find('go', normalizeVersion(version));
-        if (!toolPath) {
-            // download, extract, cache
-            toolPath = yield acquireGo(version);
-            core.debug('Go tool is cached under ' + toolPath);
-        }
-        setGoEnvironmentVariables(toolPath);
-        toolPath = path.join(toolPath, 'bin');
-        //
-        // prepend the tools path. instructs the agent to prepend for future tasks
-        //
-        core.addPath(toolPath);
-    });
-}
-exports.getGo = getGo;
-function acquireGo(version) {
-    return __awaiter(this, void 0, void 0, function* () {
-        //
-        // Download - a tool installer intimately knows how to get the tool (and construct urls)
-        //
-        let fileName = getFileName(version);
-        let downloadUrl = getDownloadUrl(fileName);
-        let downloadPath = null;
-        try {
-            downloadPath = yield tc.downloadTool(downloadUrl);
-        }
-        catch (error) {
-            core.debug(error);
-            throw `Failed to download version ${version}: ${error}`;
-        }
-        //
-        // Extract
-        //
-        let extPath = tempDirectory;
-        if (!extPath) {
-            throw new Error('Temp directory not set');
-        }
-        if (osPlat == 'win32') {
-            extPath = yield tc.extractZip(downloadPath);
-        }
-        else {
-            extPath = yield tc.extractTar(downloadPath);
-        }
-        //
-        // Install into the local tool cache - node extracts with a root folder that matches the fileName downloaded
-        //
-        const toolRoot = path.join(extPath, 'go');
-        version = normalizeVersion(version);
-        return yield tc.cacheDir(toolRoot, 'go', version);
-    });
-}
-function getFileName(version) {
-    const platform = osPlat == 'win32' ? 'windows' : osPlat;
-    const arch = osArch == 'x64' ? 'amd64' : '386';
-    const ext = osPlat == 'win32' ? 'zip' : 'tar.gz';
-    const filename = util.format('go%s.%s-%s.%s', version, platform, arch, ext);
-    return filename;
-}
-function getDownloadUrl(filename) {
-    return util.format('https://storage.googleapis.com/golang/%s', filename);
-}
-function setGoEnvironmentVariables(goRoot) {
-    core.exportVariable('GOROOT', goRoot);
-    const goPath = process.env['GOPATH'] || '';
-    const goBin = process.env['GOBIN'] || '';
-    // set GOPATH and GOBIN as user value
-    if (goPath) {
-        core.exportVariable('GOPATH', goPath);
-    }
-    if (goBin) {
-        core.exportVariable('GOBIN', goBin);
-    }
-}
-// This function is required to convert the version 1.10 to 1.10.0.
-// Because caching utility accept only sementic version,
-// which have patch number as well.
-function normalizeVersion(version) {
-    const versionPart = version.split('.');
-    if (versionPart[1] == null) {
-        //append minor and patch version if not available
-        return version.concat('.0.0');
-    }
-    else if (versionPart[2] == null) {
-        //append patch version if not available
-        return version.concat('.0');
-    }
-    return version;
-}

lib/setup-go.js

@@ -1,41 +0,0 @@
-"use strict";
-var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
-    return new (P || (P = Promise))(function (resolve, reject) {
-        function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
-        function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }
-        function step(result) { result.done ? resolve(result.value) : new P(function (resolve) { resolve(result.value); }).then(fulfilled, rejected); }
-        step((generator = generator.apply(thisArg, _arguments || [])).next());
-    });
-};
-var __importStar = (this && this.__importStar) || function (mod) {
-    if (mod && mod.__esModule) return mod;
-    var result = {};
-    if (mod != null) for (var k in mod) if (Object.hasOwnProperty.call(mod, k)) result[k] = mod[k];
-    result["default"] = mod;
-    return result;
-};
-Object.defineProperty(exports, "__esModule", { value: true });
-const core = __importStar(require("@actions/core"));
-const installer = __importStar(require("./installer"));
-const path = __importStar(require("path"));
-function run() {
-    return __awaiter(this, void 0, void 0, function* () {
-        try {
-            //
-            // Version is optional.  If supplied, install / use from the tool cache
-            // If not supplied then task is still used to setup proxy, auth, etc...
-            //
-            const version = core.getInput('version');
-            if (version) {
-                yield installer.getGo(version);
-            }
-            // TODO: setup proxy from runner proxy config
-            const matchersPath = path.join(__dirname, '..', '.github');
-            console.log(`##[add-matcher]${path.join(matchersPath, 'go.json')}`);
-        }
-        catch (error) {
-            core.setFailed(error.message);
-        }
-    });
-}
-run();

matchers.json

@@ -0,0 +1,16 @@
+{
+    "problemMatcher": [
+        {
+            "owner": "go",
+            "pattern": [
+                {
+                    "regexp": "^\\s*(.+\\.go):(?:(\\d+):(\\d+):)? (.*)",
+                    "file": 1,
+                    "line": 2,
+                    "column": 3,
+                    "message": 4
+                }
+            ]
+        }
+    ]
+}

node_modules/@actions/core/README.md

@@ -1,7 +0,0 @@
-# `@actions/core`
-
-> Core functions for setting results, logging, registering secrets and exporting variables across actions
-
-## Usage
-
-See [src/core.ts](src/core.ts).

node_modules/@actions/core/lib/command.d.ts

@@ -1,16 +0,0 @@
-interface CommandProperties {
-    [key: string]: string;
-}
-/**
- * Commands
- *
- * Command Format:
- *   ##[name key=value;key=value]message
- *
- * Examples:
- *   ##[warning]This is the user warning message
- *   ##[set-secret name=mypassword]definatelyNotAPassword!
- */
-export declare function issueCommand(command: string, properties: CommandProperties, message: string): void;
-export declare function issue(name: string, message: string): void;
-export {};

node_modules/@actions/core/lib/command.js

@@ -1,66 +0,0 @@
-"use strict";
-Object.defineProperty(exports, "__esModule", { value: true });
-const os = require("os");
-/**
- * Commands
- *
- * Command Format:
- *   ##[name key=value;key=value]message
- *
- * Examples:
- *   ##[warning]This is the user warning message
- *   ##[set-secret name=mypassword]definatelyNotAPassword!
- */
-function issueCommand(command, properties, message) {
-    const cmd = new Command(command, properties, message);
-    process.stdout.write(cmd.toString() + os.EOL);
-}
-exports.issueCommand = issueCommand;
-function issue(name, message) {
-    issueCommand(name, {}, message);
-}
-exports.issue = issue;
-const CMD_PREFIX = '##[';
-class Command {
-    constructor(command, properties, message) {
-        if (!command) {
-            command = 'missing.command';
-        }
-        this.command = command;
-        this.properties = properties;
-        this.message = message;
-    }
-    toString() {
-        let cmdStr = CMD_PREFIX + this.command;
-        if (this.properties && Object.keys(this.properties).length > 0) {
-            cmdStr += ' ';
-            for (const key in this.properties) {
-                if (this.properties.hasOwnProperty(key)) {
-                    const val = this.properties[key];
-                    if (val) {
-                        // safely append the val - avoid blowing up when attempting to
-                        // call .replace() if message is not a string for some reason
-                        cmdStr += `${key}=${escape(`${val || ''}`)};`;
-                    }
-                }
-            }
-        }
-        cmdStr += ']';
-        // safely append the message - avoid blowing up when attempting to
-        // call .replace() if message is not a string for some reason
-        const message = `${this.message || ''}`;
-        cmdStr += escapeData(message);
-        return cmdStr;
-    }
-}
-function escapeData(s) {
-    return s.replace(/\r/g, '%0D').replace(/\n/g, '%0A');
-}
-function escape(s) {
-    return s
-        .replace(/\r/g, '%0D')
-        .replace(/\n/g, '%0A')
-        .replace(/]/g, '%5D')
-        .replace(/;/g, '%3B');
-}
-//# sourceMappingURL=command.js.map

node_modules/@actions/core/lib/command.js.map

@@ -1 +0,0 @@
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node_modules/@actions/core/lib/core.d.ts

@@ -1,57 +0,0 @@
-/**
- * Interface for getInput options
- */
-export interface InputOptions {
-    /** Optional. Whether the input is required. If required and not present, will throw. Defaults to false */
-    required?: boolean;
-}
-/**
- * sets env variable for this action and future actions in the job
- * @param name the name of the variable to set
- * @param val the value of the variable
- */
-export declare function exportVariable(name: string, val: string): void;
-/**
- * exports the variable and registers a secret which will get masked from logs
- * @param name the name of the variable to set
- * @param val value of the secret
- */
-export declare function exportSecret(name: string, val: string): void;
-/**
- * Prepends inputPath to the PATH (for this action and future actions)
- * @param inputPath
- */
-export declare function addPath(inputPath: string): void;
-/**
- * Gets the value of an input.  The value is also trimmed.
- *
- * @param     name     name of the input to get
- * @param     options  optional. See InputOptions.
- * @returns   string
- */
-export declare function getInput(name: string, options?: InputOptions): string;
-/**
- * Sets the action status to neutral
- */
-export declare function setNeutral(): void;
-/**
- * Sets the action status to failed.
- * When the action exits it will be with an exit code of 1
- * @param message add error issue message
- */
-export declare function setFailed(message: string): void;
-/**
- * Writes debug message to user log
- * @param message debug message
- */
-export declare function debug(message: string): void;
-/**
- * Adds an error issue
- * @param message error issue message
- */
-export declare function error(message: string): void;
-/**
- * Adds an warning issue
- * @param message warning issue message
- */
-export declare function warning(message: string): void;

node_modules/@actions/core/lib/core.js

@@ -1,100 +0,0 @@
-"use strict";
-Object.defineProperty(exports, "__esModule", { value: true });
-const exit_1 = require("@actions/exit");
-const command_1 = require("./command");
-const path = require("path");
-//-----------------------------------------------------------------------
-// Variables
-//-----------------------------------------------------------------------
-/**
- * sets env variable for this action and future actions in the job
- * @param name the name of the variable to set
- * @param val the value of the variable
- */
-function exportVariable(name, val) {
-    process.env[name] = val;
-    command_1.issueCommand('set-env', { name }, val);
-}
-exports.exportVariable = exportVariable;
-/**
- * exports the variable and registers a secret which will get masked from logs
- * @param name the name of the variable to set
- * @param val value of the secret
- */
-function exportSecret(name, val) {
-    exportVariable(name, val);
-    command_1.issueCommand('set-secret', {}, val);
-}
-exports.exportSecret = exportSecret;
-/**
- * Prepends inputPath to the PATH (for this action and future actions)
- * @param inputPath
- */
-function addPath(inputPath) {
-    command_1.issueCommand('add-path', {}, inputPath);
-    process.env['PATH'] = `${inputPath}${path.delimiter}${process.env['PATH']}`;
-}
-exports.addPath = addPath;
-/**
- * Gets the value of an input.  The value is also trimmed.
- *
- * @param     name     name of the input to get
- * @param     options  optional. See InputOptions.
- * @returns   string
- */
-function getInput(name, options) {
-    const val = process.env[`INPUT_${name.replace(' ', '_').toUpperCase()}`] || '';
-    if (options && options.required && !val) {
-        throw new Error(`Input required and not supplied: ${name}`);
-    }
-    return val.trim();
-}
-exports.getInput = getInput;
-//-----------------------------------------------------------------------
-// Results
-//-----------------------------------------------------------------------
-/**
- * Sets the action status to neutral
- */
-function setNeutral() {
-    process.exitCode = exit_1.ExitCode.Neutral;
-}
-exports.setNeutral = setNeutral;
-/**
- * Sets the action status to failed.
- * When the action exits it will be with an exit code of 1
- * @param message add error issue message
- */
-function setFailed(message) {
-    process.exitCode = exit_1.ExitCode.Failure;
-    error(message);
-}
-exports.setFailed = setFailed;
-//-----------------------------------------------------------------------
-// Logging Commands
-//-----------------------------------------------------------------------
-/**
- * Writes debug message to user log
- * @param message debug message
- */
-function debug(message) {
-    command_1.issueCommand('debug', {}, message);
-}
-exports.debug = debug;
-/**
- * Adds an error issue
- * @param message error issue message
- */
-function error(message) {
-    command_1.issue('error', message);
-}
-exports.error = error;
-/**
- * Adds an warning issue
- * @param message warning issue message
- */
-function warning(message) {
-    command_1.issue('warning', message);
-}
-exports.warning = warning;
-//# sourceMappingURL=core.js.map

node_modules/@actions/core/lib/core.js.map

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node_modules/@actions/core/package.json

@@ -1,66 +0,0 @@
-{
-  "_from": "file:toolkit\\actions-core-0.0.0.tgz",
-  "_id": "@actions/core@0.0.0",
-  "_inBundle": false,
-  "_integrity": "sha512-58ituSV1rzBMmmsWoFDnrnsT+Wm4kD/u9NgAGbPvZ7rQHWluYtD5bDbIsjDC6rKFuhqytkxDJPsF/TWBdgc/nA==",
-  "_location": "/@actions/core",
-  "_phantomChildren": {},
-  "_requested": {
-    "type": "file",
-    "where": "E:\\github\\setup-go",
-    "raw": "@actions/core@file:toolkit/actions-core-0.0.0.tgz",
-    "name": "@actions/core",
-    "escapedName": "@actions%2fcore",
-    "scope": "@actions",
-    "rawSpec": "file:toolkit/actions-core-0.0.0.tgz",
-    "saveSpec": "file:toolkit\\actions-core-0.0.0.tgz",
-    "fetchSpec": "E:\\github\\setup-go\\toolkit\\actions-core-0.0.0.tgz"
-  },
-  "_requiredBy": [
-    "/",
-    "/@actions/tool-cache"
-  ],
-  "_resolved": "E:\\github\\setup-go\\toolkit\\actions-core-0.0.0.tgz",
-  "_shasum": "346d90a534fa6c5021bc2e1b732574fd2c66fc35",
-  "_spec": "@actions/core@file:toolkit/actions-core-0.0.0.tgz",
-  "_where": "E:\\github\\setup-go",
-  "bugs": {
-    "url": "https://github.com/actions/toolkit/issues"
-  },
-  "bundleDependencies": false,
-  "dependencies": {
-    "@actions/exit": "^0.0.0"
-  },
-  "deprecated": false,
-  "description": "Actions core lib",
-  "devDependencies": {
-    "@types/node": "^12.0.2"
-  },
-  "directories": {
-    "lib": "lib",
-    "test": "__tests__"
-  },
-  "files": [
-    "lib"
-  ],
-  "homepage": "https://github.com/actions/toolkit/tree/master/packages/core",
-  "keywords": [
-    "core",
-    "actions"
-  ],
-  "license": "MIT",
-  "main": "lib/core.js",
-  "name": "@actions/core",
-  "publishConfig": {
-    "access": "public"
-  },
-  "repository": {
-    "type": "git",
-    "url": "git+https://github.com/actions/toolkit.git"
-  },
-  "scripts": {
-    "test": "echo \"Error: run tests from root\" && exit 1",
-    "tsc": "tsc"
-  },
-  "version": "0.0.0"
-}

node_modules/@actions/exec/README.md

@@ -1,7 +0,0 @@
-# `@actions/exec`
-
-> Functions necessary for running tools on the command line
-
-## Usage
-
-See [src/exec.ts](src/exec.ts).

node_modules/@actions/exec/lib/exec.d.ts

@@ -1,12 +0,0 @@
-import * as im from './interfaces';
-/**
- * Exec a command.
- * Output will be streamed to the live console.
- * Returns promise with return code
- *
- * @param     commandLine        command to execute (can include additional args). Must be correctly escaped.
- * @param     args               optional arguments for tool. Escaping is handled by the lib.
- * @param     options            optional exec options.  See ExecOptions
- * @returns   Promise<number>    exit code
- */
-export declare function exec(commandLine: string, args?: string[], options?: im.ExecOptions): Promise<number>;

node_modules/@actions/exec/lib/exec.js

@@ -1,36 +0,0 @@
-"use strict";
-var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
-    return new (P || (P = Promise))(function (resolve, reject) {
-        function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
-        function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }
-        function step(result) { result.done ? resolve(result.value) : new P(function (resolve) { resolve(result.value); }).then(fulfilled, rejected); }
-        step((generator = generator.apply(thisArg, _arguments || [])).next());
-    });
-};
-Object.defineProperty(exports, "__esModule", { value: true });
-const tr = require("./toolrunner");
-/**
- * Exec a command.
- * Output will be streamed to the live console.
- * Returns promise with return code
- *
- * @param     commandLine        command to execute (can include additional args). Must be correctly escaped.
- * @param     args               optional arguments for tool. Escaping is handled by the lib.
- * @param     options            optional exec options.  See ExecOptions
- * @returns   Promise<number>    exit code
- */
-function exec(commandLine, args, options) {
-    return __awaiter(this, void 0, void 0, function* () {
-        const commandArgs = tr.argStringToArray(commandLine);
-        if (commandArgs.length === 0) {
-            throw new Error(`Parameter 'commandLine' cannot be null or empty.`);
-        }
-        // Path to tool to execute should be first arg
-        const toolPath = commandArgs[0];
-        args = commandArgs.slice(1).concat(args || []);
-        const runner = new tr.ToolRunner(toolPath, args, options);
-        return runner.exec();
-    });
-}
-exports.exec = exec;
-//# sourceMappingURL=exec.js.map