Angular Quality & Compliance Flashcards
7 cards from real Angular Web Framework practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Angular Quality & Compliance flashcards as text
Which Angular CLI command runs unit tests with code coverage reporting enabled?
Answer: ng test --code-coverage
The `ng test --code-coverage` flag instructs Karma to produce an Istanbul coverage report in the `/coverage` folder.
In Angular's default Karma configuration, which coverage reporter generates an HTML report you can open in a browser?
Answer: html
The `html` reporter produces a browsable HTML coverage report in the coverage output directory.
What is the purpose of the `schemas: [NO_ERRORS_SCHEMA]` option in an Angular TestBed configuration?
Answer: Suppresses unknown element and attribute errors in the test host
`NO_ERRORS_SCHEMA` tells TestBed to ignore unknown elements and attributes, allowing shallow component testing without declaring every child component.
Which ESLint rule configuration file does `ng lint` look for by default in a modern Angular project?
Answer: .eslintrc.js or .eslintrc.json
Modern Angular projects generated with `@angular-eslint/schematics` use `.eslintrc.js` or `.eslintrc.json` as the ESLint configuration file.
What does the `fixture.detectChanges()` call do in an Angular unit test?
Answer: Triggers Angular's change detection cycle on the test fixture
`detectChanges()` manually triggers Angular's change detection so the DOM reflects the component's current state during testing.
Which Jasmine matcher should you use to verify that a spy was called exactly once?
Answer: toHaveBeenCalledTimes(1)
`toHaveBeenCalledTimes(1)` asserts the spy was invoked exactly one time, distinguishing it from `toHaveBeenCalled()` which only checks that it was called at least once.
In Angular, what is the recommended approach to test a component that depends on an HTTP service without making real network calls?
Answer: Import HttpClientTestingModule and use HttpTestingController
`HttpClientTestingModule` paired with `HttpTestingController` lets you expect and flush HTTP requests in unit tests without real network activity.