react-test-renderer | lightweight solution | Frontend Framework library
kandi X-RAY | react-test-renderer Summary
kandi X-RAY | react-test-renderer Summary
[DEPRECATED] A lightweight solution to testing fully-rendered React Components
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Top functions reviewed by kandi - BETA
- Create a rendered component
- Creates find methods
- Returns the ReactComponent instance .
- Find all children of a given element .
- Create the rendered element .
- Find all instances of all component instances within component
- Helper function that creates event methods .
- Finds the first element that matches a predicate .
- Find the first component that matches the target component .
- Creates and returns the results of the rendered tree .
react-test-renderer Key Features
react-test-renderer Examples and Code Snippets
Community Discussions
Trending Discussions on react-test-renderer
QUESTION
Greetings I have a problem with Heroku because it's don't want to install legacy packages for my Shopify app, my Shopify app is on Github and I just set up everything that my application needs, but when I deploy the main branch on Heroku I get this error in Heroku console below, can someone help me fix this?
...ANSWER
Answered 2022-Feb-10 at 13:23Your lock file contains conflicting dependencies. Since you were able to reproduce the error locally using npm ci
we have a good way to test a fix locally.
It looks like you are depending directly on React 16. Is that something that you need directly, or is it just a dependency for Next.js?
If it's not something you need directly, upgrade it per the Next.js docs:
QUESTION
I have been using github actions for quite sometime but today my deployments started failing. Below is the error from github action logs
...ANSWER
Answered 2022-Mar-16 at 07:01First, this error message is indeed expected on Jan. 11th, 2022.
See "Improving Git protocol security on GitHub".
January 11, 2022 Final brownout.
This is the full brownout period where we’ll temporarily stop accepting the deprecated key and signature types, ciphers, and MACs, and the unencrypted Git protocol.
This will help clients discover any lingering use of older keys or old URLs.
Second, check your package.json
dependencies for any git://
URL, as in this example, fixed in this PR.
As noted by Jörg W Mittag:
For GitHub Actions:There was a 4-month warning.
The entire Internet has been moving away from unauthenticated, unencrypted protocols for a decade, it's not like this is a huge surprise.Personally, I consider it less an "issue" and more "detecting unmaintained dependencies".
Plus, this is still only the brownout period, so the protocol will only be disabled for a short period of time, allowing developers to discover the problem.
The permanent shutdown is not until March 15th.
As in actions/checkout issue 14, you can add as a first step:
QUESTION
I followed some answers from here that are similar to my issues. But unfortunately, the error is not removed. That is why I asked here again.
This is an old versioned React Native
project where react-native-document-picker
version was 2.1.0
. When I upgraded the version to 8.0.0
, the error shows as the following screenshot:
The current files are as like below;
android/settings.gradle
...ANSWER
Answered 2022-Mar-22 at 18:08The reason you are getting DocumentPicker undefined is the react-native-document-picker
version 8.0.0
has been updated since version 2.1.0
which code you've posted.
According to the library doc, you have to import the DocumentPicker differently. And the util DocumentPickerUtil is also not available to the updated version. For react-native-document-picker
version 8.0.0
you have to import in the following way
import DocumentPicker, { types } from 'react-native-document-picker';
And also DocumentPicker.show
method is no longer available you have to use the DocumentPicker.pick
method.
Ref:
QUESTION
Unless I'm mistaken, I believe I've found a bug in how rerenders are triggered (or in this case, aren't) by the @testing-library/react
package. I've got a codesandbox which you can download and reproduce in seconds:
https://codesandbox.io/s/asynchronous-react-redux-toolkit-bug-8sleu4?file=/README.md
As a summary for here, I've just got a redux store and I toggle a boolean value from false
to true
after some async activity in an on-mount useEffect
in a component:
ANSWER
Answered 2022-Mar-01 at 09:31I've apparently misunderstood how react-testing-library works under the hood. You don't even need to use rerender
or act
at all! Simply using a waitFor
with await
/ async
is enough to trigger the on mount logic and subsequent rendering:
QUESTION
After upgrading react-scripts to v5, craco start
does not work properly. App starts with no error but in browser, there is a blank page and if i open inspector, i only see index.html codes not react codes. It was working well with react-scripts@4.0.3. Here is my local files;
package.json
...ANSWER
Answered 2022-Feb-23 at 10:05craco
's Github readme, states that it is supporting Create React App (CRA) 4.*
. By this statement, I'm assuming CRA 5
is not officially supported by craco
.
However, this repository utilizes both CRA 5
and craco
(but I have not verified that it is working). Use this repository to compare your setup (after verifying that the linked repositry is working), and try different settings/configs to see if you get further.
QUESTION
I'm fairly new to react and using hooks. I'm using downshift plugin and want to show a MultiSelection dropdown. I'm using hooks to do that but I keep getting this error in the browser:
Invalid hook call. Hooks can only be called inside of the body of a function component. This could happen for one of the following reasons:
You might have mismatching versions of React and the renderer (such as React DOM) You might be breaking the Rules of Hooks You might have more than one copy of React in the same app See for tips about how to debug and fix this problem.
I have read the doc and checked for any rules broken but as per my knowledge everything is correct. Here is my function that uses hooks:
...ANSWER
Answered 2022-Feb-10 at 14:20I found out that I had an extra copy of React running, after removing it hooks worked!!
QUESTION
I have recently upgraded my app from SDK 40 to SDK 44 and came across this error App.js: [BABEL]: Unexpected token '.' (While processing: /Users/user/path/to/project/node_modules/babel-preset-expo/index.js)
Error Stack Trace:
...ANSWER
Answered 2021-Dec-21 at 05:52can you give your
- package.json
- node version
I think that's because of the babel issue / your node version, because it cannot transpile the optional chaining https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/Optional_chaining
maybe tried using latest LTS node version? because as far as I know, the latest LTS node version already support optional chaining
QUESTION
useEffect usually use Promises for update state.
This updates cause long warning in jest: Warning: An update to null inside a test was not wrapped in act(...).
How correctly write Jest Test for such case?
live example, Reproducible Example:
https://codesandbox.io/s/jest-test-for-useeffect-with-promises-spieq?file=/index.test.js
index.test.js
...ANSWER
Answered 2022-Jan-14 at 13:28I would like to suggest you to use testing-library/react which could be use smoothly with jest and provide async methods
Your test would become something like:
QUESTION
The Application was working fine until the installation of React-native-Reanimated library but has started to crash post installation when trying to debug remotely. It wouldn't even start again unless re-installed and shows this error:
Attempt to invoke interface method 'java.lang.String com.facebook.react.bridge.CatalystInstance.getSourceURL()' on a null object reference
The app was not starting but following the installation instructions in the React Reanimated docs got it to work but it now crashes every time I try to connect to a remote debugger.
...ANSWER
Answered 2022-Jan-13 at 06:25Okay so it seems like Remote Debugging is not possible after installation of reanimated 2, using Flipper for debugging instead
QUESTION
I have a functional component Foo.js
that looks like this:
ANSWER
Answered 2021-Dec-16 at 09:02Turns out that the cause for this was that the exported component got mocked, due to that I had automock set to true in my jest config.
Changing this in jest.config.js
:
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