Fix for Candidate Not Iterable Error

.github/workflows/e2e-cache.yml

@@ -82,6 +82,8 @@ jobs:
             python-version: pypy-3.10-v7.x
           - os: ubuntu-22.04-arm
             python-version: pypy-3.11-v7.x
+          - os: ubuntu-22.04-arm
+            python-version: pypy-3.10-v7.x
     steps:
       - uses: actions/checkout@v4
       - name: Setup Python

__tests__/install-python.test.ts

@@ -8,10 +8,29 @@ import * as tc from '@actions/tool-cache';
 
 jest.mock('@actions/http-client');
 jest.mock('@actions/tool-cache');
-
-const mockManifest = [{version: '1.0.0'}];
+jest.mock('@actions/tool-cache', () => ({
+  getManifestFromRepo: jest.fn()
+}));
+const mockManifest = [
+  {
+    version: '1.0.0',
+    stable: true,
+    files: [
+      {
+        filename: 'tool-v1.0.0-linux-x64.tar.gz',
+        platform: 'linux',
+        arch: 'x64',
+        download_url: 'https://example.com/tool-v1.0.0-linux-x64.tar.gz'
+      }
+    ]
+  }
+];
 
 describe('getManifest', () => {
+  beforeEach(() => {
+    jest.resetAllMocks();
+  });
+
   it('should return manifest from repo', async () => {
     (tc.getManifestFromRepo as jest.Mock).mockResolvedValue(mockManifest);
     const manifest = await getManifest();

dist/setup/index.js

@@ -97461,16 +97461,36 @@ function findReleaseFromManifest(semanticVersionSpec, architecture, manifest) {
     });
 }
 exports.findReleaseFromManifest = findReleaseFromManifest;
+function isIToolRelease(obj) {
+    return (typeof obj === 'object' &&
+        obj !== null &&
+        typeof obj.version === 'string' &&
+        typeof obj.stable === 'boolean' &&
+        Array.isArray(obj.files) &&
+        obj.files.every((file) => typeof file.filename === 'string' &&
+            typeof file.platform === 'string' &&
+            typeof file.arch === 'string' &&
+            typeof file.download_url === 'string'));
+}
 function getManifest() {
     return __awaiter(this, void 0, void 0, function* () {
         try {
-            return yield getManifestFromRepo();
+            const repoManifest = yield getManifestFromRepo();
+            if (Array.isArray(repoManifest) &&
+                repoManifest.length &&
+                repoManifest.every(isIToolRelease)) {
+                return repoManifest;
+            }
+            throw new Error('The repository manifest is invalid or does not include any valid tool release (IToolRelease) entries.');
         }
         catch (err) {
             core.debug('Fetching the manifest via the API failed.');
             if (err instanceof Error) {
                 core.debug(err.message);
             }
+            else {
+                core.error('An unexpected error occurred while fetching the manifest.');
+            }
         }
         return yield getManifestFromURL();
     });
@@ -97518,6 +97538,9 @@ function installPython(workingDirectory) {
 }
 function installCpythonFromRelease(release) {
     return __awaiter(this, void 0, void 0, function* () {
+        if (!release.files || release.files.length === 0) {
+            throw new Error('No files found in the release to download.');
+        }
         const downloadUrl = release.files[0].download_url;
         core.info(`Download from "${downloadUrl}"`);
         let pythonPath = '';
@@ -97538,8 +97561,11 @@ function installCpythonFromRelease(release) {
         catch (err) {
             if (err instanceof tc.HTTPError) {
                 // Rate limit?
-                if (err.httpStatusCode === 403 || err.httpStatusCode === 429) {
-                    core.info(`Received HTTP status code ${err.httpStatusCode}.  This usually indicates the rate limit has been exceeded`);
+                if (err.httpStatusCode === 403) {
+                    core.error(`Received HTTP status code 403. This indicates a permission issue or restricted access.`);
+                }
+                else if (err.httpStatusCode === 429) {
+                    core.info(`Received HTTP status code 429.  This usually indicates the rate limit has been exceeded`);
                 }
                 else {
                     core.info(err.message);

src/install-python.ts

@@ -5,6 +5,7 @@ import * as exec from '@actions/exec';
 import * as httpm from '@actions/http-client';
 import {ExecOptions} from '@actions/exec/lib/interfaces';
 import {IS_WINDOWS, IS_LINUX, getDownloadFileName} from './utils';
+import {IToolRelease} from '@actions/tool-cache';
 
 const TOKEN = core.getInput('token');
 const AUTH = !TOKEN ? undefined : `token ${TOKEN}`;
@@ -31,14 +32,41 @@ export async function findReleaseFromManifest(
 
   return foundRelease;
 }
-
+function isIToolRelease(obj: any): obj is IToolRelease {
+  return (
+    typeof obj === 'object' &&
+    obj !== null &&
+    typeof obj.version === 'string' &&
+    typeof obj.stable === 'boolean' &&
+    Array.isArray(obj.files) &&
+    obj.files.every(
+      (file: any) =>
+        typeof file.filename === 'string' &&
+        typeof file.platform === 'string' &&
+        typeof file.arch === 'string' &&
+        typeof file.download_url === 'string'
+    )
+  );
+}
 export async function getManifest(): Promise<tc.IToolRelease[]> {
   try {
-    return await getManifestFromRepo();
+    const repoManifest = await getManifestFromRepo();
+    if (
+      Array.isArray(repoManifest) &&
+      repoManifest.length &&
+      repoManifest.every(isIToolRelease)
+    ) {
+      return repoManifest;
+    }
+    throw new Error(
+      'The repository manifest is invalid or does not include any valid tool release (IToolRelease) entries.'
+    );
   } catch (err) {
     core.debug('Fetching the manifest via the API failed.');
     if (err instanceof Error) {
       core.debug(err.message);
+    } else {
+      core.error('An unexpected error occurred while fetching the manifest.');
     }
   }
   return await getManifestFromURL();
@@ -93,6 +121,9 @@ async function installPython(workingDirectory: string) {
 }
 
 export async function installCpythonFromRelease(release: tc.IToolRelease) {
+  if (!release.files || release.files.length === 0) {
+    throw new Error('No files found in the release to download.');
+  }
   const downloadUrl = release.files[0].download_url;
 
   core.info(`Download from "${downloadUrl}"`);
@@ -113,9 +144,13 @@ export async function installCpythonFromRelease(release: tc.IToolRelease) {
   } catch (err) {
     if (err instanceof tc.HTTPError) {
       // Rate limit?
-      if (err.httpStatusCode === 403 || err.httpStatusCode === 429) {
+      if (err.httpStatusCode === 403) {
+        core.error(
+          `Received HTTP status code 403. This indicates a permission issue or restricted access.`
+        );
+      } else if (err.httpStatusCode === 429) {
         core.info(
-          `Received HTTP status code ${err.httpStatusCode}.  This usually indicates the rate limit has been exceeded`
+          `Received HTTP status code 429.  This usually indicates the rate limit has been exceeded`
         );
       } else {
         core.info(err.message);