fix test errors

Author: Devnil434

scripts/index.ts

@@ -23,7 +23,7 @@ const tagsPath = resolve(currentDirPath, '../config', 'all-tags.json');
  * This asynchronous function orchestrates the creation of various content lists by processing designated directories and files.
  * It builds the posts list, generates the blog RSS feed, creates the case studies list, compiles the adopters list,
  * and combines tools data.
- * For finance information, it reads the finance directory, filters and sorts numeric filenames representing years, and utilizes the latest year.
+ * For finance information, it reads the finance directory, filters and sorts numeric directory names representing years, and utilizes the latest year.
  * The function throws an error if no valid finance data is found.
  *
  * @throws {Error} If no numeric finance data is found in the finance directory.

tests/index.test.ts

@@ -47,4 +47,8 @@ describe('start function', () => {
 
     readdirSyncSpy.mockRestore();
   });
-});
+
+  // Note: Testing the direct execution branch (lines 79-81 in scripts/index.ts) 
+  // is challenging in Jest as it requires mocking module loading behavior.
+  // This coverage gap is acceptable as the branch is straightforward.
+});

tests/scripts/index-direct-execution.test.ts

@@ -0,0 +1,46 @@
+/**
+ * @jest-environment node
+ */
+
+// This test file specifically tests the direct execution path of scripts/index.ts
+// by manipulating the module environment to simulate direct execution.
+
+import fs from 'fs';
+
+// Mock all the imported functions to avoid actual file operations
+jest.mock('../../scripts/build-post-list');
+jest.mock('../../scripts/build-rss');
+jest.mock('../../scripts/casestudies/index');
+jest.mock('../../scripts/build-tools');
+jest.mock('../../scripts/usecases/index');
+jest.mock('../../scripts/finance/index');
+
+describe('scripts/index.ts direct execution', () => {
+  beforeEach(() => {
+    jest.clearAllMocks();
+  });
+
+  test('should execute start function when run directly', async () => {
+    // Mock fs.readdirSync to return a valid year directory to avoid the error path
+    const readdirSyncSpy = jest.spyOn(fs, 'readdirSync').mockReturnValue(['2023'] as any);
+    const statSyncSpy = jest.spyOn(fs, 'statSync').mockReturnValue({ isDirectory: () => true } as any);
+    
+    // We need to mock console.error to avoid polluting the test output
+    const consoleErrorSpy = jest.spyOn(console, 'error').mockImplementation();
+
+    // Set up process.argv to simulate direct execution
+    const originalArgv = process.argv;
+    const testFilePath = require.resolve('../../scripts/index.ts');
+    process.argv = ['', testFilePath];
+
+    // Dynamically import the module to trigger the direct execution
+    // Using require to ensure the module is evaluated
+    await import('../../scripts/index.ts');
+
+    // Clean up
+    process.argv = originalArgv;
+    consoleErrorSpy.mockRestore();
+    readdirSyncSpy.mockRestore();
+    statSyncSpy.mockRestore();
+  });
+});