Add test shell

Author: reynaldichernando

tests/shell.test.js

@@ -0,0 +1,184 @@
+import { describe, it, expect, vi, beforeEach, afterEach } from 'vitest';
+import { execCommand, getPrompt } from '../src/executor.js';
+import { getProfileModule } from '../src/modules/ProfileModule.js';
+import readline from 'node:readline';
+
+vi.mock('../src/executor.js');
+vi.mock('../src/modules/ProfileModule.js');
+vi.mock('node:readline');
+vi.mock('conf', () => {
+  const Conf = vi.fn(() => ({
+    get: vi.fn(),
+    set: vi.fn(),
+  }));
+  return { default: Conf };
+});
+
+vi.spyOn(console, 'log').mockImplementation(() => { });
+vi.spyOn(console, 'error').mockImplementation(() => { });
+
+let updatePrompt;
+let startShell;
+
+beforeEach(async () => {
+  vi.resetModules();
+  vi.clearAllMocks();
+
+  vi.mocked(getPrompt).mockReturnValue('puter@/> ');
+  vi.mocked(getProfileModule).mockReturnValue({
+    checkLogin: vi.fn(),
+  });
+
+  const mockOn = vi.fn().mockReturnThis();
+  vi.mocked(readline.createInterface).mockReturnValue({
+    setPrompt: vi.fn(),
+    prompt: vi.fn(),
+    on: mockOn,
+  });
+
+  const module = await import('../src/commands/shell.js');
+  updatePrompt = module.updatePrompt;
+  startShell = module.startShell;
+});
+
+describe('updatePrompt', () => {
+  it('should call rl.setPrompt with getPrompt result', async () => {
+    await startShell();
+    const rl = readline.createInterface.mock.results[0].value;
+    rl.setPrompt.mockClear();
+
+    updatePrompt('/test/path');
+
+    expect(rl.setPrompt).toHaveBeenCalledWith('puter@/> ');
+  });
+});
+
+describe('startShell', () => {
+  it('should call checkLogin', async () => {
+    await startShell();
+    expect(getProfileModule().checkLogin).toHaveBeenCalled();
+  });
+
+  describe('with command argument', () => {
+    let mockExit;
+
+    beforeEach(() => {
+      mockExit = vi.spyOn(process, 'exit').mockImplementation(() => {
+        throw new Error('process.exit called');
+      });
+    });
+
+    afterEach(() => {
+      mockExit.mockRestore();
+    });
+
+    it('should execute command and exit when command is provided', async () => {
+      await expect(startShell('help')).rejects.toThrow('process.exit called');
+      expect(execCommand).toHaveBeenCalledWith('help');
+      expect(mockExit).toHaveBeenCalledWith(0);
+    });
+
+    it('should not create readline interface when command is provided', async () => {
+      vi.mocked(readline.createInterface).mockClear();
+      await expect(startShell('help')).rejects.toThrow('process.exit called');
+      expect(readline.createInterface).not.toHaveBeenCalled();
+    });
+  });
+
+  describe('without command argument (interactive mode)', () => {
+    it('should create readline interface', async () => {
+      await startShell();
+      expect(readline.createInterface).toHaveBeenCalledWith({
+        input: process.stdin,
+        output: process.stdout,
+        prompt: null,
+      });
+    });
+
+    it('should display welcome message', async () => {
+      await startShell();
+      expect(console.log).toHaveBeenCalledWith(expect.stringContaining('Welcome to Puter-CLI'));
+    });
+
+    it('should set prompt and call prompt()', async () => {
+      await startShell();
+      const rl = readline.createInterface.mock.results[0].value;
+      expect(rl.setPrompt).toHaveBeenCalledWith('puter@/> ');
+      expect(rl.prompt).toHaveBeenCalled();
+    });
+
+    it('should register line and close event handlers', async () => {
+      await startShell();
+      const rl = readline.createInterface.mock.results[0].value;
+      expect(rl.on).toHaveBeenCalledWith('line', expect.any(Function));
+      expect(rl.on).toHaveBeenCalledWith('close', expect.any(Function));
+    });
+  });
+
+  describe('line event handler', () => {
+    let lineHandler;
+    let rl;
+
+    beforeEach(async () => {
+      await startShell();
+      rl = readline.createInterface.mock.results[0].value;
+      lineHandler = rl.on.mock.calls.find(call => call[0] === 'line')[1];
+    });
+
+    it('should execute trimmed command', async () => {
+      await lineHandler('  ls  ');
+      expect(execCommand).toHaveBeenCalledWith('ls');
+    });
+
+    it('should not execute empty line', async () => {
+      vi.mocked(execCommand).mockClear();
+      await lineHandler('   ');
+      expect(execCommand).not.toHaveBeenCalled();
+    });
+
+    it('should call prompt after executing command', async () => {
+      rl.prompt.mockClear();
+      await lineHandler('ls');
+      expect(rl.prompt).toHaveBeenCalled();
+    });
+
+    it('should log error message when execCommand throws', async () => {
+      vi.mocked(execCommand).mockRejectedValueOnce(new Error('Command failed'));
+      await lineHandler('badcmd');
+      expect(console.error).toHaveBeenCalledWith(expect.stringContaining('Command failed'));
+    });
+
+    it('should still call prompt after error', async () => {
+      vi.mocked(execCommand).mockRejectedValueOnce(new Error('Command failed'));
+      rl.prompt.mockClear();
+      await lineHandler('badcmd');
+      expect(rl.prompt).toHaveBeenCalled();
+    });
+  });
+
+  describe('close event handler', () => {
+    let closeHandler;
+    let mockExit;
+
+    beforeEach(async () => {
+      mockExit = vi.spyOn(process, 'exit').mockImplementation(() => { });
+      await startShell();
+      const rl = readline.createInterface.mock.results[0].value;
+      closeHandler = rl.on.mock.calls.find(call => call[0] === 'close')[1];
+    });
+
+    afterEach(() => {
+      mockExit.mockRestore();
+    });
+
+    it('should display goodbye message', () => {
+      closeHandler();
+      expect(console.log).toHaveBeenCalledWith(expect.stringContaining('Goodbye'));
+    });
+
+    it('should exit with code 0', () => {
+      closeHandler();
+      expect(mockExit).toHaveBeenCalledWith(0);
+    });
+  });
+});