enzyme-matchers | Jasmine/Jest assertions for enzyme | Unit Testing library
kandi X-RAY | enzyme-matchers Summary
kandi X-RAY | enzyme-matchers Summary
This is an assertion library for enzyme to simplify your tests, and make them more readable. This library supports several testing frameworks including Jest and Jasmine.
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Top functions reviewed by kandi - BETA
- Checks if the style object is present .
- Makes a jest - test suite .
- Checks whether an object is present .
- Checks if there is a state value .
- Stringify a single value .
- Returns true if the type is passed in .
- Checks whether the text is present in the text .
- Map wrapper HTML elements
- Creates an include text .
- Tests a matcher
enzyme-matchers Key Features
enzyme-matchers Examples and Code Snippets
Community Discussions
Trending Discussions on enzyme-matchers
QUESTION
The issue I am having is my React application hosted on Heroku is calling "https://localhost:8000" for it's calls to the Express server.
I have the proxy
in package.json
set to https://localhost:8000
to call my Express server. From my understanding this is all I need to do and Heroku handles the connection when it is deployed.
When I go to my endpoint like so: https://heroku-app.herokuapp.com/v1/products/:productid
my Express server successfully sends back JSON data in the browser, so I do know my Node server is up and running on Heroku. The issue seems to be the React app proxy
is not calling the Heroku URL post-deploy.
Here is my React apps package.json
:
ANSWER
Answered 2019-Jul-19 at 23:41Although a GET request usually qualifies as a simple request, the fact that the Content-Type is set as application/json qualifies it as a pre-flight [1] request. Therefore, what happens is that the browser sends a HTTP request before the original GET request by OPTIONS method to check whether it is safe to send the original request.
Try enabling CORS Pre-Flight for your route handler sending the application/json response. You can do this by using the cors [2] middleware in the options handler for your route, like such:
QUESTION
I've been having an issue with Jest (23.5.0) and WebStorm (2018.2.3) intellisense lately. For all the Jest methods (e.g. toHaveBeenCalledWith
, toHaveLength
), I receive a Unresolved function or method "xxx"
error.
I have @types/jest
working in all of my projects except for my most recent one, which stopped working once I ejected from CRA.
Strangely enough, if I delete all my project's node_modules
, the the intellisense on Jest works just fine - but as soon as I run yarn install
the intellisense stops working and I get the Unresolved function or method "xxx"
error. So I suspect one of my packages are causing @types/jest
to stop working.
Snapshots of the problem:
What I've tried:
All the methods discussed in the JetBrains forum regarding this issue
This alternate workaround
Invalidating Webstorm's cache and restarting
Reinstalling packages after deleting lock files
My project's setup:
My WebStorm version is 2018.2.3
My
...package.json
looks as follows:
ANSWER
Answered 2018-Sep-06 at 14:16expect
is resolved to window.expect
in node_modules/react-custom-scrollbars/test.js
, causing the issue. You can exclude this file from indexing by marking it as plain text (Mark as plain text in file right-click menu) - this should solve the issue
QUESTION
how to unit test css of a node in enzyme
.toHaveStyle() is not working for me
any other enzyme matcher to test the css?
this is not working
...ANSWER
Answered 2018-May-19 at 00:30I got the solution. As I was thinking that .toHaveStyle()
will also check for the css which is inside the class
like
hello
QUESTION
I created a project with create-react-native-app and I want to use jest-enzyme
matchers, in their Readme there is a section on how to use it with create-react-app
, but I did not find any info on how to use it with create-react-native-app
.
To add these matchers all I need is to create a jest setup file, but create-react-native-app
does not seen to allow for custom jest setup file.
So it's possible to a use a custom jest setup file without ejecting from create-react-native-app?
Also is there any way to add a jest
setup file for create-react-native-app
?
ANSWER
Answered 2017-Aug-24 at 13:45Maybe what you are looking for is http://airbnb.io/enzyme/docs/guides/react-native.html which explains as follows:
Unfortunately, React Native has many environmental dependencies that can be hard to simulate without a host device.
This can be difficult when you want your test suite to run with typical Continuous Integration servers such as Travis.
A pure JS mock of React Native exists and can solve this problem in the majority of use cases.
To install it, run:
npm i --save-dev react-native-mock
After adding that dependency you need to import the /mock
within your tests you should good to go. Maybe I am out of context, you can update your problem and give us some extra context so we can craft a better answer.
Ultimately, there is something important to mention in this thread: https://github.com/airbnb/enzyme/issues/928 for the time of this post RN is in version 0.47 and working with react 16 alpha which is not a supported version for enzyme (the people at enzyme only work with rc versions) so if that is your case things looks quite difficult as there is no official support, however, last comment https://github.com/airbnb/enzyme/issues/928#issuecomment-324584942 offers unofficial alternatives
PD: make sure you follow the installation instructions here: http://airbnb.io/enzyme/docs/installation/index.html
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