Writing test for PrimeNG components

Testing PrimeNG components follows the same principles as testing regular Angular components. This similarity arises from the fact that PrimeNG components are essentially Angular components under the hood. In the following sections, we will explore a few of these tests to gain insights and knowledge in this area.

How PrimeNG tests its components

First, let’s have a look at how PrimeNG tests its own components. Due to space limitations in this book, it is not possible to display the entire test file, as it is quite lengthy. However, we can focus on a specific section that illustrates how PrimeNG tests its components in its source code. Here is the example code of a PrimeNG Button component:

describe('Button', () => {
    let button: Button;
    let fixture: ComponentFixture<Button>;
    beforeEach(() => {
        ...