# Testing Guidelines

## Unit Testing Requirements

- Test files should end with `.spec.ts`.
- Use Spectator for Component, Directive and Service tests.
- Use Jest as the test runner.
- Follow the Arrange-Act-Assert (AAA) pattern in tests.
- Mock external dependencies to isolate the unit under test.

## Example Test Structure

```typescript
import { createComponentFactory, Spectator } from '@ngneat/spectator/jest';
import { MyComponent } from './my-component.component';

describe('MyComponent', () => {
  let spectator: Spectator<MyComponent>;
  const createComponent = createComponentFactory(MyComponent);

  beforeEach(() => {
    spectator = createComponent();
  });

  it('should create', () => {
    expect(spectator.component).toBeTruthy();
  });

  it('should handle action correctly', () => {
    spectator.setInput('inputProp', 'testValue');
    spectator.click('button');
    expect(spectator.component.outputProp).toBe('expectedValue');
  });
});
```