test(utils): add tests for utility functions in utils folder

test/utils/validateAudioFiles.test.js

@@ -0,0 +1,78 @@
+import { expect } from 'chai';
+import sinon from 'sinon';
+import esmock from 'esmock';
+
+describe('validateAudioFile', () => {
+  let validateAudioFile, fsStub, mimeStub;
+
+  beforeEach(async () => {
+    fsStub = {
+      lstat: sinon.stub()
+    };
+
+    mimeStub = {
+      lookup: sinon.stub()
+    };
+
+    validateAudioFile = await esmock('../../src/utils/validateAudioFiles.js', {
+      'fs/promises': fsStub,
+      'mime-types': mimeStub
+    });
+  });
+
+  afterEach(() => {
+    esmock.purge(validateAudioFile);
+    sinon.restore();
+  });
+
+  it('should return null and log an error if the path is not a file', async () => {
+    const filePath = '/path/to/directory';
+    const consoleErrorStub = sinon.stub(console, 'error');
+
+    fsStub.lstat.resolves({ isFile: () => false });
+
+    const result = await validateAudioFile(filePath);
+    expect(result).to.be.null;
+    expect(consoleErrorStub.calledWith(`The path ${filePath} is not a file and is ignored.`)).to.be.true;
+
+    consoleErrorStub.restore();
+  });
+
+  it('should return null and log an error if the file is not a recognized audio file type', async () => {
+    const filePath = '/path/to/file.txt';
+    const consoleErrorStub = sinon.stub(console, 'error');
+
+    fsStub.lstat.resolves({ isFile: () => true });
+    mimeStub.lookup.returns('text/plain');
+
+    const result = await validateAudioFile(filePath);
+    expect(result).to.be.null;
+    expect(consoleErrorStub.calledWith(`File ${filePath} is not an audio file and is ignored.`)).to.be.true;
+
+    consoleErrorStub.restore();
+  });
+
+  it('should return the file path if the file is a recognized audio file type', async () => {
+    const filePath = '/path/to/file.mp3';
+
+    fsStub.lstat.resolves({ isFile: () => true });
+    mimeStub.lookup.returns('audio/mpeg');
+
+    const result = await validateAudioFile(filePath);
+    expect(result).to.equal(filePath);
+  });
+
+  it('should return null and log an error if an exception occurs during validation', async () => {
+    const filePath = '/path/to/file.mp3';
+    const error = new Error('Test Error');
+    const consoleErrorStub = sinon.stub(console, 'error');
+
+    fsStub.lstat.rejects(error);
+
+    const result = await validateAudioFile(filePath);
+    expect(result).to.be.null;
+    expect(consoleErrorStub.calledWith(`Error validating file ${filePath}: ${error}`)).to.be.true;
+
+    consoleErrorStub.restore();
+  });
+});