Testing

Running Tests

# Run all tests
flutter test

# Run specific test file
flutter test test/battery_test.dart

# Run with coverage
flutter test --coverage

Test Structure

Tests are located in the test/ directory mirroring the lib structure:

test/
├── data/
│   ├── model/
│   └── provider/
├── view/
│   └── widget/
└── test_helpers.dart

Unit Tests

Test business logic and data models:

test('should calculate CPU percentage', () {
  final cpu = CpuModel(usage: 75.0);
  expect(cpu.usagePercentage, '75%');
});

Widget Tests

Test UI components:

testWidgets('ServerCard displays server name', (tester) async {
  await tester.pumpWidget(
    ProviderScope(
      child: MaterialApp(
        home: ServerCard(server: testServer),
      ),
    ),
  );

  expect(find.text('Test Server'), findsOneWidget);
});

Provider Tests

Test Riverpod providers:

test('serverStatusProvider returns status', () async {
  final container = ProviderContainer();
  final status = await container.read(serverStatusProvider(testServer).future);
  expect(status, isA<StatusModel>());
});

Mocking

Use mocks for external dependencies:

class MockSshService extends Mock implements SshService {}

test('connects to server', () async {
  final mockSsh = MockSshService();
  when(mockSsh.connect(any)).thenAnswer((_) async => true);

  // Test with mock
});

Integration Tests

Test complete user flows (in integration_test/):

testWidgets('add server flow', (tester) async {
  await tester.pumpWidget(MyApp());

  // Tap add button
  await tester.tap(find.byIcon(Icons.add));
  await tester.pumpAndSettle();

  // Fill form
  await tester.enterText(find.byKey(Key('name')), 'Test Server');
  // ...
});

Best Practices

1. Arrange-Act-Assert: Structure tests clearly
2. Descriptive names: Test names should describe behavior
3. One assertion per test: Keep tests focused
4. Mock external deps: Don’t depend on real servers
5. Test edge cases: Empty lists, null values, etc.