chore: Add minimal tests for check

scripts/actions/__tests__/check-for-outdated-translations.test.js

@@ -0,0 +1,78 @@
+const fs = require('fs');
+const fetch = require('node-fetch');
+
+const checkForOutdatedTranslations = require('../check-for-outdated-translations');
+
+// Mock node-fetch so we can avoid calling out to GitHub
+jest.mock('node-fetch');
+
+global.process.exit = jest.fn();
+
+// Helper function to mock a response from Github
+const mockGithubResponse = (result) => {
+  fetch.mockResolvedValueOnce({
+    json: jest.fn(() => Promise.resolve(result)),
+    headers: { get: jest.fn() },
+  });
+};
+
+// Mock fs so we don't manipulate local files
+jest.mock('fs');
+
+// helper function to construct and mock the response from readFileSync
+const mockReadFileSync = (translate = []) => {
+  const mdx = `---
+title: A test file
+${translate.length ? `translate:\n  - ${translate.join('\n  - ')}` : ''}
+---
+This is a test file
+`;
+
+  fs.readFileSync.mockReturnValueOnce(mdx);
+};
+
+const mockExistsSync = (bool) => fs.existsSync.mockReturnValueOnce(bool);
+
+const STATUS = {
+  ADDED: 'added',
+  MODIFIED: 'modified',
+  REMOVED: 'removed',
+};
+
+describe('Action: Check for outdated translations', () => {
+  afterEach(() => {
+    jest.resetAllMocks();
+  });
+
+  test('should succeed when no files are found for deletion', async () => {
+    const filename = '/content/bar.mdx';
+    mockGithubResponse([
+      {
+        filename,
+        status: STATUS.ADDED,
+      },
+    ]);
+
+    mockReadFileSync(['jp']);
+    mockExistsSync(false);
+
+    await checkForOutdatedTranslations();
+
+    expect(global.process.exit).toHaveBeenLastCalledWith(0);
+  });
+
+  test('should fail when files are found for deletion', async () => {
+    const filename = '/content/bar.mdx';
+    mockGithubResponse([
+      {
+        filename,
+        status: STATUS.REMOVED,
+      },
+    ]);
+
+    mockExistsSync(true);
+    await checkForOutdatedTranslations();
+
+    expect(global.process.exit).toHaveBeenLastCalledWith(1);
+  });
+});