Add output cache-matched-key

__tests__/cache-restore.test.ts

@@ -131,6 +131,7 @@ describe('cache-restore', () => {
     ])(
       'restored dependencies for %s',
       async (packageManager, toolVersion, fileHash) => {
+        const expectedCacheKey = `node-cache-${platform}-${arch}-${packageManager}-${fileHash}`;
         getCommandOutputSpy.mockImplementation((command: string) => {
           if (command.includes('version')) {
             return toolVersion;
@@ -142,12 +143,20 @@ describe('cache-restore', () => {
         await restoreCache(packageManager, '');
         expect(hashFilesSpy).toHaveBeenCalled();
         expect(infoSpy).toHaveBeenCalledWith(
-          `Cache restored from key: node-cache-${platform}-${arch}-${packageManager}-${fileHash}`
+          `Cache restored from key: ${expectedCacheKey}`
         );
         expect(infoSpy).not.toHaveBeenCalledWith(
           `${packageManager} cache is not found`
         );
         expect(setOutputSpy).toHaveBeenCalledWith('cache-hit', true);
+        expect(setOutputSpy).toHaveBeenCalledWith(
+          'cache-key',
+          expectedCacheKey
+        );
+        expect(setOutputSpy).toHaveBeenCalledWith(
+          'cache-matched-key',
+          expectedCacheKey
+        );
       }
     );
   });
@@ -161,6 +170,7 @@ describe('cache-restore', () => {
     ])(
       'dependencies are changed %s',
       async (packageManager, toolVersion, fileHash) => {
+        const expectedCacheKey = `node-cache-${platform}-${arch}-${packageManager}-${fileHash}`;
         getCommandOutputSpy.mockImplementation((command: string) => {
           if (command.includes('version')) {
             return toolVersion;
@@ -176,6 +186,14 @@ describe('cache-restore', () => {
           `${packageManager} cache is not found`
         );
         expect(setOutputSpy).toHaveBeenCalledWith('cache-hit', false);
+        expect(setOutputSpy).toHaveBeenCalledWith(
+          'cache-key',
+          expectedCacheKey
+        );
+        expect(setOutputSpy).toHaveBeenCalledWith(
+          'cache-matched-key',
+          undefined
+        );
       }
     );
   });
@@ -210,6 +228,28 @@ describe('cache-restore', () => {
 
       expect(setOutputSpy).toHaveBeenCalledWith('cache-hit', false);
     });
+
+    it('sets the cache-matched-key output when cache is found', async () => {
+      (cache.restoreCache as jest.Mock).mockResolvedValue(cacheKey);
+
+      await restoreCache(packageManager, cacheDependencyPath);
+
+      expect(core.setOutput).toHaveBeenCalledWith(
+        'cache-matched-key',
+        cacheKey
+      );
+    });
+
+    it('sets the cache-matched-key output to undefined when cache is not found', async () => {
+      (cache.restoreCache as jest.Mock).mockResolvedValue(undefined);
+
+      await restoreCache(packageManager, cacheDependencyPath);
+
+      expect(core.setOutput).toHaveBeenCalledWith(
+        'cache-matched-key',
+        undefined
+      );
+    });
   });
 
   afterEach(() => {

action.yml

@@ -32,6 +32,8 @@ outputs:
     description: 'A boolean value to indicate if a cache was hit.'
   cache-key:
     description: 'The key used for the cache.'
+  cache-matched-key:
+    description: 'The key used for the cache that resulted in a cache hit.'
   node-version:
     description: 'The installed node version.'
 runs:

dist/setup/index.js

@@ -93337,6 +93337,8 @@ const restoreCache = (packageManager, cacheDependencyPath) => __awaiter(void 0,
         cacheKey = yield cache.restoreCache(cachePaths, primaryKey);
     }
     core.setOutput('cache-hit', Boolean(cacheKey));
+    core.setOutput('cache-matched-key', cacheKey);
+    core.debug(`cache-matched-key is ${cacheKey}`);
     if (!cacheKey) {
         core.info(`${packageManager} cache is not found`);
         return;

src/cache-restore.ts

@@ -62,6 +62,8 @@ export const restoreCache = async (
   }
 
   core.setOutput('cache-hit', Boolean(cacheKey));
+  core.setOutput('cache-matched-key', cacheKey);
+  core.debug(`cache-matched-key is ${cacheKey}`);
 
   if (!cacheKey) {
     core.info(`${packageManager} cache is not found`);