WebJan 6, 2024 · Expect our button to have a class of primary We then expect our button to have a class of primary. We can do this by using the expect function and passing in the button we want to test and then the class we want to test for using the toHaveClass function. WebMay 5, 2024 · We check if the length is bigger than 0 to see if any element with the class name exists. Conclusion To test a className with the Jest and React testing library, we can check if any element with the given class name exists with getElementsByClassName.
How to test a className with the Jest and React testing …
WebApr 4, 2024 · The React Testing Library aims to provide a lightweight solution for testing React components. Its most fundamental principle is to do testing in a way that resembles how our component would be used in a real application. RTL gives us the tool to interact with the component in a way that the user would. Defining a simple counter application WebYou can also query the returned element (s) by their accessible name by specifying the name argument: getByRole (expectedRole, name: 'The name'). The accessible name is for simple cases equal to the label of a form element, or the text content of a button, or the value of the aria-label attribute. how to soften laptop hinges
Testing a Button Component · Debbie Codes
WebFeb 12, 2024 · 1 Answer. You can just do getByText ('test table data') without asserting anything. getByText will fail your test if it cannot find the text it is looking for. If the text is there and your test passes, you essentially asserted that it is there even if you haven't used expect () assertion explicitly. Though be careful when using queryByText (or ... WebJun 12, 2024 · React-Testing-Library is a common library for testing React Apps. It contains many usable APIs that make you focus on the behaviors that are relevant to users. The library comes by default when you built your project using create-react-app. So this is typically a go-to for testing on React projects, as well as jest. WebAug 9, 2024 · This solution. The React Testing Library is a very light-weight solution for testing React components. It provides light utility functions on top of react-dom and react-dom/test-utils, in a way that encourages better testing practices. Its … how to soften keloid scars