Do not use TestBed for simple presentational components. Instantiate the class directly (e.g., const component = new MyComponent(); ) to execute lightning-fast unit tests without DOM compilation overhead.
You will likely be asked to justify your choice of state management. Be prepared to compare the heavyweights:
To help tailor a specific preparation plan for you, let me know: What are you targeting? decoded frontend angular interview hacking
Explain that Angular automatically sanitizes values bound in templates. However, if you must use innerHTML , you must inject the DomSanitizer and explicitly trust the bypass (e.g., bypassSecurityTrustHtml ). Mention this with a massive caveat that it should only be used with strictly trusted, sanitized backend data. 🧪 The Testing Strategy That Wins Offers
Transitioning a component to ChangeDetectionStrategy.OnPush is the fastest way to boost performance, but it changes how the component behaves. Do not use TestBed for simple presentational components
If you are preparing for an upcoming technical loop, review the official Angular Documentation regarding their latest reactivity models. You can also look into practice platforms like GreatFrontEnd to run through simulated component building exercises.
The component only checks for changes when an @Input reference changes, an event originates from the component, or an async pipe emits. Be prepared to compare the heavyweights: To help
Mention Angular CDK Component Harnesses. They provide a stable API to interact with component setups in tests, making your tests highly resilient to future DOM structural changes.