test(auth): add unit tests for AuthGuard and AuthController with mocked dependencies

backend/src/auth/auth.controller.spec.ts

@@ -0,0 +1,184 @@
+jest.mock("uuid", () => ({
+	v4: jest.fn(() => "mocked-uuid"),
+}));
+
+jest.mock("@noble/post-quantum/ml-kem.js", () => ({
+	ml_kem768: {
+		keygen: jest.fn(),
+		encapsulate: jest.fn(),
+		decapsulate: jest.fn(),
+	},
+}));
+
+jest.mock("jose", () => ({
+	SignJWT: jest.fn().mockReturnValue({
+		setProtectedHeader: jest.fn().mockReturnThis(),
+		setIssuedAt: jest.fn().mockReturnThis(),
+		setExpirationTime: jest.fn().mockReturnThis(),
+		sign: jest.fn().mockResolvedValue("mocked-jwt"),
+	}),
+	jwtVerify: jest.fn(),
+}));
+
+import { ConfigService } from "@nestjs/config";
+import { Test, TestingModule } from "@nestjs/testing";
+import { AuthController } from "./auth.controller";
+import { AuthService } from "./auth.service";
+
+jest.mock("iron-session", () => ({
+	getIronSession: jest.fn().mockResolvedValue({
+		save: jest.fn(),
+		destroy: jest.fn(),
+	}),
+}));
+
+describe("AuthController", () => {
+	let controller: AuthController;
+	let authService: AuthService;
+	let _configService: ConfigService;
+
+	const mockAuthService = {
+		register: jest.fn(),
+		login: jest.fn(),
+		verifyTwoFactorLogin: jest.fn(),
+		refresh: jest.fn(),
+	};
+
+	const mockConfigService = {
+		get: jest
+			.fn()
+			.mockReturnValue("complex_password_at_least_32_characters_long"),
+	};
+
+	beforeEach(async () => {
+		const module: TestingModule = await Test.createTestingModule({
+			controllers: [AuthController],
+			providers: [
+				{ provide: AuthService, useValue: mockAuthService },
+				{ provide: ConfigService, useValue: mockConfigService },
+			],
+		}).compile();
+
+		controller = module.get<AuthController>(AuthController);
+		authService = module.get<AuthService>(AuthService);
+		_configService = module.get<ConfigService>(ConfigService);
+	});
+
+	it("should be defined", () => {
+		expect(controller).toBeDefined();
+	});
+
+	describe("register", () => {
+		it("should call authService.register", async () => {
+			const dto = {
+				email: "test@example.com",
+				password: "password",
+				username: "test",
+			};
+			await controller.register(dto as any);
+			expect(authService.register).toHaveBeenCalledWith(dto);
+		});
+	});
+
+	describe("login", () => {
+		it("should call authService.login and setup session if success", async () => {
+			const dto = { email: "test@example.com", password: "password" };
+			const req = { ip: "127.0.0.1" } as any;
+			const res = { json: jest.fn() } as any;
+			const loginResult = {
+				access_token: "at",
+				refresh_token: "rt",
+				userId: "1",
+				message: "ok",
+			};
+			mockAuthService.login.mockResolvedValue(loginResult);
+
+			await controller.login(dto as any, "ua", req, res);
+
+			expect(authService.login).toHaveBeenCalledWith(dto, "ua", "127.0.0.1");
+			expect(res.json).toHaveBeenCalledWith({ message: "ok", userId: "1" });
+		});
+
+		it("should return result if no access_token", async () => {
+			const dto = { email: "test@example.com", password: "password" };
+			const req = { ip: "127.0.0.1" } as any;
+			const res = { json: jest.fn() } as any;
+			const loginResult = { message: "2fa_required", userId: "1" };
+			mockAuthService.login.mockResolvedValue(loginResult);
+
+			await controller.login(dto as any, "ua", req, res);
+
+			expect(res.json).toHaveBeenCalledWith(loginResult);
+		});
+	});
+
+	describe("verifyTwoFactor", () => {
+		it("should call authService.verifyTwoFactorLogin and setup session", async () => {
+			const dto = { userId: "1", token: "123456" };
+			const req = { ip: "127.0.0.1" } as any;
+			const res = { json: jest.fn() } as any;
+			const verifyResult = {
+				access_token: "at",
+				refresh_token: "rt",
+				message: "ok",
+			};
+			mockAuthService.verifyTwoFactorLogin.mockResolvedValue(verifyResult);
+
+			await controller.verifyTwoFactor(dto, "ua", req, res);
+
+			expect(authService.verifyTwoFactorLogin).toHaveBeenCalledWith(
+				"1",
+				"123456",
+				"ua",
+				"127.0.0.1",
+			);
+			expect(res.json).toHaveBeenCalledWith({ message: "ok" });
+		});
+	});
+
+	describe("refresh", () => {
+		it("should refresh token if session has refresh token", async () => {
+			const { getIronSession } = require("iron-session");
+			const session = { refreshToken: "rt", save: jest.fn() };
+			getIronSession.mockResolvedValue(session);
+			const req = {} as any;
+			const res = { json: jest.fn() } as any;
+			mockAuthService.refresh.mockResolvedValue({
+				access_token: "at2",
+				refresh_token: "rt2",
+			});
+
+			await controller.refresh(req, res);
+
+			expect(authService.refresh).toHaveBeenCalledWith("rt");
+			expect(res.json).toHaveBeenCalledWith({ message: "Token refreshed" });
+		});
+
+		it("should return 401 if no refresh token", async () => {
+			const { getIronSession } = require("iron-session");
+			const session = { save: jest.fn() };
+			getIronSession.mockResolvedValue(session);
+			const req = {} as any;
+			const res = { status: jest.fn().mockReturnThis(), json: jest.fn() } as any;
+
+			await controller.refresh(req, res);
+
+			expect(res.status).toHaveBeenCalledWith(401);
+		});
+	});
+
+	describe("logout", () => {
+		it("should destroy session", async () => {
+			const { getIronSession } = require("iron-session");
+			const session = { destroy: jest.fn() };
+			getIronSession.mockResolvedValue(session);
+			const req = {} as any;
+			const res = { json: jest.fn() } as any;
+
+			await controller.logout(req, res);
+
+			expect(session.destroy).toHaveBeenCalled();
+			expect(res.json).toHaveBeenCalledWith({ message: "User logged out" });
+		});
+	});
+});