feat(mosaic): gateway token recovery via BetterAuth cookie (#411)

packages/mosaic/src/commands/gateway/login.spec.ts

@@ -0,0 +1,87 @@
+import { describe, it, expect, vi, beforeEach } from 'vitest';
+
+// Mock auth module
+vi.mock('../../auth.js', () => ({
+  signIn: vi.fn(),
+  saveSession: vi.fn(),
+}));
+
+// Mock daemon to avoid file-system reads
+vi.mock('./daemon.js', () => ({
+  readMeta: vi.fn().mockReturnValue({
+    host: 'localhost',
+    port: 14242,
+    version: '1.0.0',
+    installedAt: '',
+    entryPoint: '',
+  }),
+}));
+
+import { runLogin, getGatewayUrl } from './login.js';
+import { signIn, saveSession } from '../../auth.js';
+import { readMeta } from './daemon.js';
+
+const mockSignIn = vi.mocked(signIn);
+const mockSaveSession = vi.mocked(saveSession);
+const mockReadMeta = vi.mocked(readMeta);
+
+describe('getGatewayUrl', () => {
+  it('returns override URL when provided', () => {
+    expect(getGatewayUrl('http://my-gateway:9999')).toBe('http://my-gateway:9999');
+  });
+
+  it('builds URL from meta.json when no override given', () => {
+    mockReadMeta.mockReturnValueOnce({
+      host: 'myhost',
+      port: 8080,
+      version: '1.0.0',
+      installedAt: '',
+      entryPoint: '',
+    });
+    expect(getGatewayUrl()).toBe('http://myhost:8080');
+  });
+
+  it('falls back to default when meta is null', () => {
+    mockReadMeta.mockReturnValueOnce(null);
+    expect(getGatewayUrl()).toBe('http://localhost:14242');
+  });
+});
+
+describe('runLogin', () => {
+  const consoleLogSpy = vi.spyOn(console, 'log').mockImplementation(() => {});
+
+  beforeEach(() => {
+    vi.clearAllMocks();
+  });
+
+  it('calls signIn and saveSession on success', async () => {
+    const fakeAuth = {
+      cookie: 'better-auth.session_token=abc',
+      userId: 'u1',
+      email: 'admin@test.com',
+    };
+    mockSignIn.mockResolvedValueOnce(fakeAuth);
+
+    await runLogin({
+      gatewayUrl: 'http://localhost:14242',
+      email: 'admin@test.com',
+      password: 'password123',
+    });
+
+    expect(mockSignIn).toHaveBeenCalledWith(
+      'http://localhost:14242',
+      'admin@test.com',
+      'password123',
+    );
+    expect(mockSaveSession).toHaveBeenCalledWith('http://localhost:14242', fakeAuth);
+    expect(consoleLogSpy).toHaveBeenCalledWith(expect.stringContaining('admin@test.com'));
+  });
+
+  it('propagates signIn errors', async () => {
+    mockSignIn.mockRejectedValueOnce(new Error('Sign-in failed (401): invalid credentials'));
+
+    await expect(
+      runLogin({ gatewayUrl: 'http://localhost:14242', email: 'bad@test.com', password: 'wrong' }),
+    ).rejects.toThrow('Sign-in failed (401)');
+  });
+});