Testing Angular components is essential for maintaining code quality and preventing regressions as your application grows and evolves. With over 12 years of Angular development experience since 2014 and as the creator of CoreUI, I’ve written thousands of component tests for production applications. Angular CLI automatically generates test files using TestBed for component creation and Jasmine for assertions. The testing approach involves creating a component instance, detecting changes, and asserting that the component renders and behaves correctly.