Revert "Temporarily disabled cache usage for v2"

.github/workflows/e2e-cache.yml

@@ -101,8 +101,6 @@ jobs:
   node-yarn2-depencies-caching:
     name: Test yarn 2 (Node ${{ matrix.node-version}}, ${{ matrix.os }})
     runs-on: ${{ matrix.os }}
-    env:
-      YARN_ENABLE_IMMUTABLE_INSTALLS: false
     strategy:
       fail-fast: false
       matrix:

__tests__/installer.test.ts

@@ -171,8 +171,7 @@ describe('setup-node', () => {
   // Found in cache tests
   //--------------------------------------------------
 
-  // Usage of pre-cached Node.js versions is temporarily disabled.
-  xit('finds version in cache with stable true', async () => {
+  it('finds version in cache with stable true', async () => {
     inputs['node-version'] = '12';
     inputs.stable = 'true';
 
@@ -183,8 +182,7 @@ describe('setup-node', () => {
     expect(logSpy).toHaveBeenCalledWith(`Found in cache @ ${toolPath}`);
   });
 
-  // Usage of pre-cached Node.js versions is temporarily disabled.
-  xit('finds version in cache with stable not supplied', async () => {
+  it('finds version in cache with stable not supplied', async () => {
     inputs['node-version'] = '12';
 
     inSpy.mockImplementation(name => inputs[name]);
@@ -196,8 +194,7 @@ describe('setup-node', () => {
     expect(logSpy).toHaveBeenCalledWith(`Found in cache @ ${toolPath}`);
   });
 
-  // Usage of pre-cached Node.js versions is temporarily disabled.
-  xit('finds version in cache and adds it to the path', async () => {
+  it('finds version in cache and adds it to the path', async () => {
     inputs['node-version'] = '12';
 
     inSpy.mockImplementation(name => inputs[name]);
@@ -387,8 +384,7 @@ describe('setup-node', () => {
   }, 100000);
 
   describe('check-latest flag', () => {
-    // Usage of pre-cached Node.js versions is temporarily disabled.
-    xit('use local version and dont check manifest if check-latest is not specified', async () => {
+    it('use local version and dont check manifest if check-latest is not specified', async () => {
       os.platform = 'linux';
       os.arch = 'x64';
 
@@ -409,8 +405,7 @@ describe('setup-node', () => {
       );
     });
 
-    // Usage of pre-cached Node.js versions is temporarily disabled.
-    xit('check latest version and resolve it from local cache', async () => {
+    it('check latest version and resolve it from local cache', async () => {
       os.platform = 'linux';
       os.arch = 'x64';
 
@@ -561,8 +556,7 @@ describe('setup-node', () => {
       inputs.stable = 'true';
     });
 
-    // Usage of pre-cached Node.js versions is temporarily disabled.
-    xit('find latest LTS version and resolve it from local cache (lts/erbium)', async () => {
+    it('find latest LTS version and resolve it from local cache (lts/erbium)', async () => {
       // arrange
       inputs['node-version'] = 'lts/erbium';
 
@@ -632,8 +626,7 @@ describe('setup-node', () => {
       );
     });
 
-    // Usage of pre-cached Node.js versions is temporarily disabled.
-    xit('find latest LTS version and resolve it from local cache (lts/*)', async () => {
+    it('find latest LTS version and resolve it from local cache (lts/*)', async () => {
       // arrange
       inputs['node-version'] = 'lts/*';
 

dist/setup/index.js

@@ -65086,8 +65086,9 @@ function getNode(versionSpec, stable, checkLatest, auth, arch = os.arch()) {
         let toolPath;
         toolPath = tc.find('node', versionSpec, osArch);
         // If not found in cache, download
-        // Usage of pre-cached Node.js versions is temporarily disabled.
-        if (false) {}
+        if (toolPath) {
+            core.info(`Found in cache @ ${toolPath}`);
+        }
         else {
             core.info(`Attempting to download ${versionSpec}...`);
             let downloadPath = '';

src/installer.ts

@@ -71,8 +71,7 @@ export async function getNode(
   toolPath = tc.find('node', versionSpec, osArch);
 
   // If not found in cache, download
-  // Usage of pre-cached Node.js versions is temporarily disabled.
-  if (false) {
+  if (toolPath) {
     core.info(`Found in cache @ ${toolPath}`);
   } else {
     core.info(`Attempting to download ${versionSpec}...`);