Implement "check-latest" flag to check if pre-cached version is latest one

.github/workflows/build-test.yml

@@ -16,7 +16,7 @@ jobs:
     runs-on: ${{ matrix.operating-system }}
     strategy:
       matrix:
-        operating-system: [ubuntu-latest, windows-latest]
+        operating-system: [ubuntu-latest, windows-latest, macos-latest]
     steps:
       - uses: actions/checkout@v2
       - name: Setup node 12

.github/workflows/versions.yml

@@ -12,36 +12,88 @@ on:
       - '**.md'
 
 jobs:
-  versions:
+  local-cache:
     runs-on: ${{ matrix.operating-system }}
     strategy:
       fail-fast: false
       matrix:
-        operating-system: [ubuntu-latest, windows-latest]
-    defaults:
-      run:
+        operating-system: [ubuntu-latest, windows-latest, macos-latest]
+        node-version: [10, 12, 14]
+    steps:
+      - uses: actions/checkout@v2
+      - name: Setup Node
+        uses: ./
+        with:
+          node-version: ${{ matrix.node-version }}
+      - name: Verify node and npm
+        run: __tests__/verify-node.sh "${{ matrix.node-version }}"
         shell: bash
+
+  manifest:
+    runs-on: ${{ matrix.operating-system }}
+    strategy:
+      fail-fast: false
+      matrix:
+        operating-system: [ubuntu-latest, windows-latest, macos-latest]
+        node-version: [10.15, 12.16.0, 14.2.0]
     steps:
       - uses: actions/checkout@v2
-      # test version that falls through to node dist
-      - name: Setup node 11 from dist
+      - name: Setup Node
         uses: ./
         with:
-          node-version: 11          
+          node-version: ${{ matrix.node-version }}
       - name: Verify node and npm
-        run: __tests__/verify-node.sh 11
-      # test old versions which didn't have npm and layout different      
-      - name: Setup node 0.12.18 from dist
-        uses: ./                 
+        run: __tests__/verify-node.sh "${{ matrix.node-version }}"
+        shell: bash
+
+  check-latest:
+    runs-on: ${{ matrix.operating-system }}
+    strategy:
+      fail-fast: false
+      matrix:
+        operating-system: [ubuntu-latest, windows-latest, macos-latest]
+        node-version: [10, 11, 12, 14]
+    steps:
+      - uses: actions/checkout@v2
+      - name: Setup Node and check latest
+        uses: ./
         with:
-          node-version: 0.12.18
-      - name: Verify node
+          node-version: ${{ matrix.node-version }}
+          check-latest: true
+      - name: Verify node and npm
+        run: __tests__/verify-node.sh "${{ matrix.node-version }}"
         shell: bash
-        run: __tests__/verify-node.sh 0.12.18 SKIP_NPM 
-      # test version from node manifest
-      - name: Setup node 12.16.2 from manifest
+
+  node-dist:
+    runs-on: ${{ matrix.operating-system }}
+    strategy:
+      fail-fast: false
+      matrix:
+        operating-system: [ubuntu-latest, windows-latest, macos-latest]
+        node-version: [11, 13]
+    steps:
+      - uses: actions/checkout@v2
+      - name: Setup Node from dist
         uses: ./
         with:
-          node-version: 12.16.2
+          node-version: ${{ matrix.node-version }}
       - name: Verify node and npm
-        run: __tests__/verify-node.sh 12        
+        run: __tests__/verify-node.sh "${{ matrix.node-version }}"
+        shell: bash
+
+  old-versions:
+    runs-on: ${{ matrix.operating-system }}
+    strategy:
+      fail-fast: false
+      matrix:
+        operating-system: [ubuntu-latest, windows-latest, macos-latest]
+    steps:
+      - uses: actions/checkout@v2
+      # test old versions which didn't have npm and layout different
+      - name: Setup node 0.12.18 from dist
+        uses: ./
+        with:
+          node-version: 0.12.18
+      - name: Verify node
+        run: __tests__/verify-node.sh 0.12.18 SKIP_NPM
+        shell: bash

README.md

@@ -41,6 +41,20 @@ steps:
 - run: npm test
 ```
 
+Check latest version:  
+> In basic example, without `check-latest` flag, the action tries to resolve version from local cache firstly and download only if it is not found. Local cache on image is updated with a couple of weeks latency.  
+`check-latest` flag forces the action to check if the cached version is the latest one. It reduces latency significantly but it is much more likely to incur version downloading.
+```yaml
+steps:
+- uses: actions/checkout@v2
+- uses: actions/setup-node@v2
+  with:
+    node-version: '12'
+    check-latest: true
+- run: npm install
+- run: npm test
+```
+
 Matrix Testing:
 ```yaml
 jobs:

__tests__/installer.test.ts

@@ -8,6 +8,7 @@ import path from 'path';
 import * as main from '../src/main';
 import * as im from '../src/installer';
 import * as auth from '../src/authutil';
+import {context} from '@actions/github';
 
 let nodeTestManifest = require('./data/versions-manifest.json');
 let nodeTestDist = require('./data/node-dist-index.json');
@@ -24,6 +25,7 @@ describe('setup-node', () => {
   let findSpy: jest.SpyInstance;
   let cnSpy: jest.SpyInstance;
   let logSpy: jest.SpyInstance;
+  let warningSpy: jest.SpyInstance;
   let getManifestSpy: jest.SpyInstance;
   let getDistSpy: jest.SpyInstance;
   let platSpy: jest.SpyInstance;
@@ -77,8 +79,9 @@ describe('setup-node', () => {
 
     // writes
     cnSpy = jest.spyOn(process.stdout, 'write');
-    logSpy = jest.spyOn(console, 'log');
+    logSpy = jest.spyOn(core, 'info');
     dbgSpy = jest.spyOn(core, 'debug');
+    warningSpy = jest.spyOn(core, 'warning');
     cnSpy.mockImplementation(line => {
       // uncomment to debug
       // process.stderr.write('write:' + line + '\n');
@@ -333,4 +336,154 @@ describe('setup-node', () => {
 
     expect(cnSpy).toHaveBeenCalledWith(`::error::${errMsg}${osm.EOL}`);
   });
+
+  describe('check-latest flag', () => {
+    it('use local version and dont check manifest if check-latest is not specified', async () => {
+      os.platform = 'linux';
+      os.arch = 'x64';
+
+      inputs['node-version'] = '12';
+      inputs['check-latest'] = 'false';
+
+      const toolPath = path.normalize('/cache/node/12.16.1/x64');
+      findSpy.mockReturnValue(toolPath);
+      await main.run();
+
+      expect(logSpy).toHaveBeenCalledWith(`Found in cache @ ${toolPath}`);
+      expect(logSpy).not.toHaveBeenCalledWith(
+        'Attempt to resolve the latest version from manifest...'
+      );
+    });
+
+    it('check latest version and resolve it from local cache', async () => {
+      os.platform = 'linux';
+      os.arch = 'x64';
+
+      inputs['node-version'] = '12';
+      inputs['check-latest'] = 'true';
+
+      const toolPath = path.normalize('/cache/node/12.16.2/x64');
+      findSpy.mockReturnValue(toolPath);
+      dlSpy.mockImplementation(async () => '/some/temp/path');
+      exSpy.mockImplementation(async () => '/some/other/temp/path');
+      cacheSpy.mockImplementation(async () => toolPath);
+
+      await main.run();
+
+      expect(logSpy).toHaveBeenCalledWith(
+        'Attempt to resolve the latest version from manifest...'
+      );
+      expect(logSpy).toHaveBeenCalledWith("Resolved as '12.16.2'");
+      expect(logSpy).toHaveBeenCalledWith(`Found in cache @ ${toolPath}`);
+    });
+
+    it('check latest version and install it from manifest', async () => {
+      os.platform = 'linux';
+      os.arch = 'x64';
+
+      inputs['node-version'] = '12';
+      inputs['check-latest'] = 'true';
+
+      findSpy.mockImplementation(() => '');
+      dlSpy.mockImplementation(async () => '/some/temp/path');
+      const toolPath = path.normalize('/cache/node/12.16.2/x64');
+      exSpy.mockImplementation(async () => '/some/other/temp/path');
+      cacheSpy.mockImplementation(async () => toolPath);
+      const expectedUrl =
+        'https://github.com/actions/node-versions/releases/download/12.16.2-20200423.28/node-12.16.2-linux-x64.tar.gz';
+
+      await main.run();
+
+      expect(logSpy).toHaveBeenCalledWith(
+        'Attempt to resolve the latest version from manifest...'
+      );
+      expect(logSpy).toHaveBeenCalledWith("Resolved as '12.16.2'");
+      expect(logSpy).toHaveBeenCalledWith(
+        `Acquiring 12.16.2 from ${expectedUrl}`
+      );
+      expect(logSpy).toHaveBeenCalledWith('Extracting ...');
+    });
+
+    it('fallback to dist if version if not found in manifest', async () => {
+      os.platform = 'linux';
+      os.arch = 'x64';
+
+      // a version which is not in the manifest but is in node dist
+      let versionSpec = '11';
+
+      inputs['node-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/node/11.11.0/x64');
+      exSpy.mockImplementation(async () => '/some/other/temp/path');
+      cacheSpy.mockImplementation(async () => toolPath);
+
+      await main.run();
+
+      let expPath = path.join(toolPath, 'bin');
+
+      expect(dlSpy).toHaveBeenCalled();
+      expect(exSpy).toHaveBeenCalled();
+      expect(logSpy).toHaveBeenCalledWith(
+        'Attempt to resolve the latest version from 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';
+
+      // a version which is not in the manifest but is in node dist
+      let versionSpec = '12';
+
+      inputs['node-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/node/12.11.0/x64');
+      exSpy.mockImplementation(async () => '/some/other/temp/path');
+      cacheSpy.mockImplementation(async () => toolPath);
+
+      await main.run();
+
+      let expPath = path.join(toolPath, 'bin');
+
+      expect(dlSpy).toHaveBeenCalled();
+      expect(exSpy).toHaveBeenCalled();
+      expect(logSpy).toHaveBeenCalledWith(
+        'Attempt to resolve the latest version from manifest...'
+      );
+      expect(logSpy).toHaveBeenCalledWith(
+        'Unable to resolve version from 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}`);
+    });
+  });
 });

action.yml

@@ -7,6 +7,9 @@ inputs:
     default: 'false'
   node-version:
     description: 'Version Spec of the version to use.  Examples: 12.x, 10.15.1, >=10.15.0'
+  check-latest:
+    description: 'Set this option if you want the action to check for the latest available version that satisfies the version spec'
+    default: false
   registry-url:
     description: 'Optional registry to set up for auth. Will set the registry in a project level .npmrc and .yarnrc file, and set up auth to read in from env.NODE_AUTH_TOKEN'
   scope: