dom-testing-library | 🐙 Simple and complete DOM testing utilities | Testing library
kandi X-RAY | dom-testing-library Summary
kandi X-RAY | dom-testing-library Summary
Simple and complete DOM testing utilities that encourage good testing practices. Read the docs | Edit the docs.
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Top functions reviewed by kandi - BETA
- Queries list by role
- Wait for a callback to happen after a callback
- Builds role list
- Returns suggestions for a given element .
- Creates suggestions for a query
- Pretty prints a DOM representation of the DOM .
- Get a window from a node
- Get the list of HTML roles
- Waits for the callback to be removed
- Get the roles of a container .
dom-testing-library Key Features
dom-testing-library Examples and Code Snippets
Community Discussions
Trending Discussions on dom-testing-library
QUESTION
I am migrating some of my unit test cases which were previously written using Jest and Enzyme to React Testing Library. I am using Material UI's Select
component and I know that, in order to open the dropdown, we have to trigger the mouseDown
event on the corresponding div
. Here is how I did it in Enzyme (working):
ANSWER
Answered 2022-Feb-21 at 14:13Make sure animations are not compromising your results. If the animations change opacity or display and they did not finish before assertion from jest... it is likely to throw an error.
QUESTION
I have a React Typescript app and while unit testing I used below code to find an element by its textContent:
...ANSWER
Answered 2021-Jul-23 at 20:02The problem is as you're using ?
(as in node.textContent?.match(textMatch);
) the result might be undefined
, while it is fine for javascript, TS sees that return nodeHasText && childrenDontHaveText;
can potentially be return undefined && undefined
and points out that undefined
is not quite boolean
. One way out of it is return nodeHasText && childrenDontHaveText || false;
QUESTION
I was taking a look to the waitFor documentation and I was wondering if there is any way to configure it globally, for example in the jest.config
or in the command used to launch the test suite?
I need to increase the timeout in every test and it is a bit annoying.
...ANSWER
Answered 2021-Jul-05 at 05:53You could create a helper function, no?
QUESTION
I'm implementing Testing Library with Puppeteer and I was trying to use an environment variable, DEBUG_PRINT_LIMIT, to limit the length of the HTML printed to console in case of failure.
But for some reasons, the variable environment is just ignored by the library...
My project:
package.json
...ANSWER
Answered 2021-Jun-15 at 19:16If finally figured it out.
It's actually a bug in the library itself: https://github.com/testing-library/pptr-testing-library/issues/55
QUESTION
I'm using jest to test a custom module that implements react embla carousel.
I received an error related to jsdom lacking an implementation for window.getComputedStyle(elt, pseudoElt)
ANSWER
Answered 2021-Apr-21 at 11:01I got the same error when updating Jest to the latest version (26.6.3). Calling getComputedStyle as a window property in the embla-carousel
code was causing this issue for me:
QUESTION
I'm considering submitting a patch (or patches) of the type declarations in @testing-library/react
and/or @testing-library/dom
. Currently, all queries on RenderResult
return variants of HTMLElement
, which leaves me writing a lot of code like
ANSWER
Answered 2021-Mar-02 at 22:51I'm pretty sure this is a design limitation of TypeScript, although I haven't found a narrowly applicable issue in GitHub. The general issue is that the heuristics TypeScript uses to check assignability between two types do not perform true unification. See microsoft/TypeScript#30134 for a discussion about the possibility of implementing such unification in TypeScript.
The shortest example I can come up with of the problem you're facing is this:
QUESTION
I need to override default testID attribute in React Testing Library. Using Jest as a testing framework.
For this, I have followed the steps given here at individual test file level.
Is there any way to have this configuration at global (project) level, so that all the test files in the project will adhere to such custom configuration and will not have need to define custom configuration explicitly at test file level?
...ANSWER
Answered 2020-Dec-31 at 08:46If using jest you can add the following in file
QUESTION
I'm trying to use waitForElementToBeRemoved
with just an element but Jest is timing out. When I pass in a function, it works.
My understanding from this feature was that it should be able to take an element: https://github.com/testing-library/dom-testing-library/pull/460
I verified my app is using @testing-library/dom@7.8.0.
Here's the code:
...ANSWER
Answered 2020-Sep-12 at 15:24Recently I faced the same issue with React Testing Library, and the reason is the version of the library. By default create-react-app
installing outdated version of @testing-library
.
Here solution for React Testing Library:
Run CLI command npm outdated
and check the versions of dependencies:
QUESTION
I'm must be missing something quite obvious, I have a react app that has a left div with multiple buttons, each one of them with different texts. I want to check if every one of those buttons was rendered.So for instance to find one of the buttons (using the Testing Library) I'm doing the following:
...ANSWER
Answered 2020-Nov-16 at 01:23There are mainly 2 possibilities I see.
- Not waiting for the button to appear. If your button is rendered after a certain thing has finished loading, you need to wait for it to appear on the screen. You can do that with a findBy query.
QUESTION
I would like to pass some custom properties to an event during some tests (using react-testing-library
and jest
). I am using the fireEvent
function. I understand from the docs that the properties in the second argument are added to the event. This is what I can't do at the moment.
ANSWER
Answered 2020-Oct-22 at 21:04The fireEvent
function allows initializing intrinsic properties of Event
objects, but it doesn't add arbitrary properties. For example, calling
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