Add warning for empty cache paths (#642)

Author: dmitry-shibanov

__tests__/cache-save.test.ts

@@ -87,6 +87,7 @@ describe('run', () => {
   describe('Validate unchanged cache is not saved', () => {
     it('should not save cache for pip', async () => {
       inputs['cache'] = 'pip';
+      inputs['python-version'] = '3.10.0';
 
       await run();
 
@@ -103,6 +104,7 @@ describe('run', () => {
 
     it('should not save cache for pipenv', async () => {
       inputs['cache'] = 'pipenv';
+      inputs['python-version'] = '3.10.0';
 
       await run();
 
@@ -121,6 +123,7 @@ describe('run', () => {
   describe('action saves the cache', () => {
     it('saves cache from pip', async () => {
       inputs['cache'] = 'pip';
+      inputs['python-version'] = '3.10.0';
       getStateSpy.mockImplementation((name: string) => {
         if (name === State.CACHE_MATCHED_KEY) {
           return requirementsHash;
@@ -147,6 +150,7 @@ describe('run', () => {
 
     it('saves cache from pipenv', async () => {
       inputs['cache'] = 'pipenv';
+      inputs['python-version'] = '3.10.0';
       getStateSpy.mockImplementation((name: string) => {
         if (name === State.CACHE_MATCHED_KEY) {
           return pipFileLockHash;
@@ -173,6 +177,7 @@ describe('run', () => {
 
     it('saves cache from poetry', async () => {
       inputs['cache'] = 'poetry';
+      inputs['python-version'] = '3.10.0';
       getStateSpy.mockImplementation((name: string) => {
         if (name === State.CACHE_MATCHED_KEY) {
           return poetryLockHash;
@@ -199,6 +204,7 @@ describe('run', () => {
 
     it('saves with -1 cacheId , should not fail workflow', async () => {
       inputs['cache'] = 'poetry';
+      inputs['python-version'] = '3.10.0';
       getStateSpy.mockImplementation((name: string) => {
         if (name === State.STATE_CACHE_PRIMARY_KEY) {
           return poetryLockHash;
@@ -227,6 +233,7 @@ describe('run', () => {
 
     it('saves with error from toolkit, should not fail the workflow', async () => {
       inputs['cache'] = 'npm';
+      inputs['python-version'] = '3.10.0';
       getStateSpy.mockImplementation((name: string) => {
         if (name === State.STATE_CACHE_PRIMARY_KEY) {
           return poetryLockHash;

dist/cache-save/index.js

@@ -59628,7 +59628,12 @@ function run() {
 exports.run = run;
 function saveCache(packageManager) {
     return __awaiter(this, void 0, void 0, function* () {
-        const cachePaths = JSON.parse(core.getState(cache_distributor_1.State.CACHE_PATHS));
+        const cachePathState = core.getState(cache_distributor_1.State.CACHE_PATHS);
+        if (!cachePathState) {
+            core.warning('Cache paths are empty. Please check the previous logs and make sure that the python version is specified');
+            return;
+        }
+        const cachePaths = JSON.parse(cachePathState);
         core.debug(`paths for caching are ${cachePaths.join(', ')}`);
         if (!isCacheDirectoryExists(cachePaths)) {
             throw new Error(`Cache folder path is retrieved for ${packageManager} but doesn't exist on disk: ${cachePaths.join(', ')}`);

src/cache-save.ts

@@ -17,7 +17,16 @@ export async function run() {
 }
 
 async function saveCache(packageManager: string) {
-  const cachePaths = JSON.parse(core.getState(State.CACHE_PATHS)) as string[];
+  const cachePathState = core.getState(State.CACHE_PATHS);
+
+  if (!cachePathState) {
+    core.warning(
+      'Cache paths are empty. Please check the previous logs and make sure that the python version is specified'
+    );
+    return;
+  }
+
+  const cachePaths = JSON.parse(cachePathState) as string[];
 
   core.debug(`paths for caching are ${cachePaths.join(', ')}`);