Fix unit tests

__tests__/setup-go.test.ts

@@ -40,6 +40,8 @@ describe('setup-go', () => {
   let existsSpy: jest.SpyInstance;
   let readFileSpy: jest.SpyInstance;
   let mkdirpSpy: jest.SpyInstance;
+  let mkdirSpy: jest.SpyInstance;
+  let symlinkSpy: jest.SpyInstance;
   let execSpy: jest.SpyInstance;
   let getManifestSpy: jest.SpyInstance;
   let getAllVersionsSpy: jest.SpyInstance;
@@ -93,6 +95,11 @@ describe('setup-go', () => {
     readFileSpy = jest.spyOn(fs, 'readFileSync');
     mkdirpSpy = jest.spyOn(io, 'mkdirP');
 
+    // fs
+    mkdirSpy = jest.spyOn(fs, 'mkdir');
+    symlinkSpy = jest.spyOn(fs, 'symlinkSync');
+    symlinkSpy.mockImplementation(() => {});
+
     // gets
     getManifestSpy.mockImplementation(() => <tc.IToolRelease[]>goTestManifest);
 
@@ -958,39 +965,4 @@ use .
       }
     );
   });
-
-  describe('Windows performance workaround', () => {
-    it('addExecutablesToCache should depends on env[RUNNER_TOOL_CACHE]', async () => {
-      const statSpy = jest.spyOn(fs, 'statSync');
-      // @ts-ignore - not implement unused methods
-      statSpy.mockImplementation(() => ({
-        isDirectory: () => true
-      }));
-      const readdirSpy = jest.spyOn(fs, 'readdirSync');
-      readdirSpy.mockImplementation(() => []);
-      const writeFileSpy = jest.spyOn(fs, 'writeFileSync');
-      writeFileSpy.mockImplementation(() => {});
-      const rmRFSpy = jest.spyOn(io, 'rmRF');
-      rmRFSpy.mockImplementation(() => Promise.resolve());
-      const mkdirPSpy = jest.spyOn(io, 'mkdirP');
-      mkdirPSpy.mockImplementation(() => Promise.resolve());
-      const cpSpy = jest.spyOn(io, 'cp');
-      cpSpy.mockImplementation(() => Promise.resolve());
-
-      const info: IGoVersionInfo = {
-        type: 'dist',
-        downloadUrl: 'http://nowhere.com',
-        resolvedVersion: '1.2.3',
-        fileName: 'ignore'
-      };
-
-      process.env['RUNNER_TOOL_CACHE'] = '/faked-hostedtoolcache1';
-      const cacheDir1 = await addExecutablesToCache('/qzx', info, 'arch');
-      expect(cacheDir1).toBe('/faked-hostedtoolcache1/go/1.2.3/arch');
-
-      process.env['RUNNER_TOOL_CACHE'] = '/faked-hostedtoolcache2';
-      const cacheDir2 = await addExecutablesToCache('/qzx', info, 'arch');
-      expect(cacheDir2).toBe('/faked-hostedtoolcache2/go/1.2.3/arch');
-    });
-  });
 });

__tests__/windows-performance.test.ts

@@ -0,0 +1,61 @@
+import fs from 'fs';
+import * as io from '@actions/io';
+import {addExecutablesToCache, IGoVersionInfo} from '../src/installer';
+
+describe('Windows performance workaround', () => {
+  let mkdirSpy: jest.SpyInstance;
+  let symlinkSpy: jest.SpyInstance;
+  let statSpy: jest.SpyInstance;
+  let readdirSpy: jest.SpyInstance;
+  let writeFileSpy: jest.SpyInstance;
+  let rmRFSpy: jest.SpyInstance;
+  let mkdirPSpy: jest.SpyInstance;
+  let cpSpy: jest.SpyInstance;
+
+  let runnerToolCache: string | undefined;
+  beforeEach(() => {
+    mkdirSpy = jest.spyOn(fs, 'mkdir');
+    symlinkSpy = jest.spyOn(fs, 'symlinkSync');
+    statSpy = jest.spyOn(fs, 'statSync');
+    readdirSpy = jest.spyOn(fs, 'readdirSync');
+    writeFileSpy = jest.spyOn(fs, 'writeFileSync');
+    rmRFSpy = jest.spyOn(io, 'rmRF');
+    mkdirPSpy = jest.spyOn(io, 'mkdirP');
+    cpSpy = jest.spyOn(io, 'cp');
+
+    // default implementations
+    // @ts-ignore - not implement unused methods
+    statSpy.mockImplementation(() => ({
+      isDirectory: () => true
+    }));
+    readdirSpy.mockImplementation(() => []);
+    writeFileSpy.mockImplementation(() => {});
+    mkdirSpy.mockImplementation(() => {});
+    symlinkSpy.mockImplementation(() => {});
+    rmRFSpy.mockImplementation(() => Promise.resolve());
+    mkdirPSpy.mockImplementation(() => Promise.resolve());
+    cpSpy.mockImplementation(() => Promise.resolve());
+
+    runnerToolCache = process.env['RUNNER_TOOL_CACHE'];
+  });
+  afterEach(() => {
+    jest.clearAllMocks();
+    process.env['RUNNER_TOOL_CACHE'] = runnerToolCache;
+  });
+  it('addExecutablesToCache should depend on env[RUNNER_TOOL_CACHE]', async () => {
+    const info: IGoVersionInfo = {
+      type: 'dist',
+      downloadUrl: 'http://nowhere.com',
+      resolvedVersion: '1.2.3',
+      fileName: 'ignore'
+    };
+
+    process.env['RUNNER_TOOL_CACHE'] = '/faked-hostedtoolcache1';
+    const cacheDir1 = await addExecutablesToCache('/qzx', info, 'arch');
+    expect(cacheDir1).toBe('/faked-hostedtoolcache1/go/1.2.3/arch');
+
+    process.env['RUNNER_TOOL_CACHE'] = '/faked-hostedtoolcache2';
+    const cacheDir2 = await addExecutablesToCache('/qzx', info, 'arch');
+    expect(cacheDir2).toBe('/faked-hostedtoolcache2/go/1.2.3/arch');
+  });
+});