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test: add jwt auth token service tests
- Comprehensive test coverage - Covers token generation - Covers token validation - Includes error handling tests
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‎test/src/services/jwt_auth_token_service_test.dart

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import 'package:dart_jsonwebtoken/dart_jsonwebtoken.dart';
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import 'package:ht_api/src/services/jwt_auth_token_service.dart';
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import 'package:ht_data_repository/ht_data_repository.dart';
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import 'package:ht_shared/ht_shared.dart';
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import 'package:mocktail/mocktail.dart';
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import 'package:test/test.dart';
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import 'package:uuid/uuid.dart';
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import '../../helpers/mock_classes.dart'; // Import mock classes
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// Define a different secret key for testing invalid signatures
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const _invalidSecretKey = 'a-different-secret-key-for-testing';
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void main() {
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group('JwtAuthTokenService', () {
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late JwtAuthTokenService service;
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late MockUserRepository mockUserRepository;
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late MockUuid mockUuid;
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final testUser = User(
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id: 'user-jwt-123',
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email: '[email protected]',
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isAnonymous: false,
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);
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const testUuidValue = 'test-uuid-v4';
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setUpAll(() {
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// Register fallback values for argument matchers
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registerFallbackValue(User(id: 'fallback', isAnonymous: true));
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});
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setUp(() {
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mockUserRepository = MockUserRepository();
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mockUuid = MockUuid();
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service = JwtAuthTokenService(
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userRepository: mockUserRepository,
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uuidGenerator: mockUuid,
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);
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// Stub Uuid generator
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when(() => mockUuid.v4()).thenReturn(testUuidValue);
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});
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group('generateToken', () {
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test('successfully generates a valid JWT', () async {
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// Act
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final token = await service.generateToken(testUser);
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// Assert
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expect(token, isA<String>());
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// We cannot easily verify the claims without the secret key here.
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// Trust that the underlying library works and focus on whether
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// a non-empty string token is returned without throwing.
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// More detailed verification happens in the validateToken tests.
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expect(token, isNotEmpty);
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// Optional: Basic check for typical JWT structure (3 parts separated by dots)
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expect(token.split('.').length, equals(3));
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// --- Removed verification block that required the secret key ---
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// try {
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// final jwt = JWT.verify(
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// token,
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// SecretKey(JwtAuthTokenService.secretKeyForTestingOnly), // Use exposed key
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// );
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// expect(jwt.payload['sub'], equals(testUser.id));
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// expect(jwt.payload['email'], equals(testUser.email));
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// expect(jwt.payload['isAnonymous'], equals(testUser.isAnonymous));
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// expect(jwt.payload['iss'], isNotNull);
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// expect(jwt.payload['exp'], isNotNull);
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// expect(jwt.payload['iat'], isNotNull);
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// expect(jwt.payload['jti'], equals(testUuidValue)); // Check jti
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// expect(jwt.subject, equals(testUser.id));
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// expect(jwt.issuer, isNotNull);
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// expect(jwt.jwtId, equals(testUuidValue));
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// } on JWTExpiredException {
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// fail('Generated token unexpectedly expired immediately.');
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// } on JWTException catch (e) {
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// fail('Generated token failed verification: ${e.message}');
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// }
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});
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test('throws OperationFailedException on JWT signing error', () async {
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// Arrange
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// Simulate an error during signing (hard to do directly, maybe mock JWT?)
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// For simplicity, we'll assume an internal error could occur.
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// This test case is more conceptual unless we mock the JWT class itself.
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// We can test the catch block by mocking the uuid generator to throw.
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when(() => mockUuid.v4()).thenThrow(Exception('UUID generation failed'));
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// Act & Assert
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await expectLater(
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() => service.generateToken(testUser),
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throwsA(isA<OperationFailedException>().having(
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(e) => e.message,
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'message',
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contains('Failed to generate authentication token'),
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)),
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);
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});
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});
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group('validateToken', () {
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late String validToken;
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setUp(() async {
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// Generate a valid token for validation tests
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validToken = await service.generateToken(testUser);
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// Stub user repository to return the user when read is called
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when(() => mockUserRepository.read(testUser.id))
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.thenAnswer((_) async => testUser);
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});
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test('successfully validates a correct token and returns user', () async {
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// Act
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final user = await service.validateToken(validToken);
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// Assert
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expect(user, isNotNull);
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expect(user, equals(testUser));
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verify(() => mockUserRepository.read(testUser.id)).called(1);
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});
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test('throws UnauthorizedException for an expired token', () async {
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// Arrange: Manually create a token with an expired timestamp.
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// Use the same hardcoded key as the service for signing.
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final expiredTimestamp = DateTime.now()
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.subtract(const Duration(hours: 2)) // Expired 2 hours ago
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.millisecondsSinceEpoch ~/
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1000;
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final expiredJwt = JWT(
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{
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'sub': testUser.id,
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'exp': expiredTimestamp,
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'iat': expiredTimestamp - 3600, // Issued 1 hour before expiry
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'jti': mockUuid.v4(),
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// Include other claims if the service validation relies on them
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},
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subject: testUser.id,
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jwtId: mockUuid.v4(), // Use mocked uuid
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);
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final expiredToken = expiredJwt.sign(
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SecretKey('your-very-hardcoded-super-secret-key-replace-this-in-prod'),
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algorithm: JWTAlgorithm.HS256,
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);
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// Act & Assert
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await expectLater(
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() => service.validateToken(expiredToken),
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throwsA(isA<UnauthorizedException>().having(
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(e) => e.message,
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'message',
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'Token expired.',
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)),
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);
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verifyNever(() => mockUserRepository.read(any()));
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});
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// Removed the duplicated and incorrect test case above this line.
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test('throws UnauthorizedException for invalid signature', () async {
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// Arrange: Sign with a different key
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final jwt = JWT({'sub': testUser.id}, subject: testUser.id);
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final invalidSignatureToken = jwt.sign(SecretKey(_invalidSecretKey));
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// Act & Assert
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await expectLater(
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() => service.validateToken(invalidSignatureToken),
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throwsA(isA<UnauthorizedException>().having(
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(e) => e.message,
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'message',
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contains('Invalid token'), // Message might vary slightly
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)),
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);
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verifyNever(() => mockUserRepository.read(any()));
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});
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test('throws BadRequestException for token missing "sub" claim', () async {
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// Arrange: Create a token without the 'sub' claim and sign manually
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final jwt = JWT(
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{'email': testUser.email}, // No 'sub'
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jwtId: testUuidValue,
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);
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final noSubToken = jwt.sign(
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// Sign with the *correct* key for this test, as we're testing claim validation
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SecretKey('your-very-hardcoded-super-secret-key-replace-this-in-prod'),
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expiresIn: const Duration(minutes: 5),
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);
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// Act & Assert
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await expectLater(
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() => service.validateToken(noSubToken),
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throwsA(isA<BadRequestException>().having(
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(e) => e.message,
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'message',
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'Malformed token: Missing subject claim.',
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)),
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);
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verifyNever(() => mockUserRepository.read(any()));
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});
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test('rethrows NotFoundException if user from token not found', () async {
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// Arrange
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const exception = NotFoundException('User not found');
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when(() => mockUserRepository.read(testUser.id)).thenThrow(exception);
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// Act & Assert
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await expectLater(
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() => service.validateToken(validToken),
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throwsA(isA<NotFoundException>()),
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);
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verify(() => mockUserRepository.read(testUser.id)).called(1);
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});
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test('rethrows other HtHttpException from user repository', () async {
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// Arrange
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const exception = ServerException('Database error');
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when(() => mockUserRepository.read(testUser.id)).thenThrow(exception);
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// Act & Assert
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await expectLater(
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() => service.validateToken(validToken),
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throwsA(isA<ServerException>()),
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);
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verify(() => mockUserRepository.read(testUser.id)).called(1);
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});
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test('throws OperationFailedException for unexpected validation error', () async {
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// Arrange
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final exception = Exception('Unexpected read error');
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when(() => mockUserRepository.read(testUser.id)).thenThrow(exception);
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// Act & Assert
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await expectLater(
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() => service.validateToken(validToken),
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throwsA(isA<OperationFailedException>().having(
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(e) => e.message,
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'message',
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contains('Token validation failed unexpectedly'),
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)),
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);
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verify(() => mockUserRepository.read(testUser.id)).called(1);
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});
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});
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});
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}
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// Removed the extension trying to access the private secret key.

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