Hello 👋 , I am facing issue with
it's throwing below error.
mount with MobX observer component.it's throwing below error.
✖ should render properly
HeadlessChrome 83.0.4103 (Mac OS X 10.15.6)
Error: Enzyme Internal Error: unknown node with tag 15
describe("<SomeComponent />", function () {
it("should render properly", function () {
const component = mount(
<StoreProvider>
<SomeComponent />
</StoreProvider>
);
});
});
The error comes when i wrap my component with
observer(SomeComponent)
const props = {
intl: { formatMessage: jest.fn() },
resetFormAction: jest.fn(),
history: jest.fn()
};
intl: { formatMessage: jest.fn() },
resetFormAction: jest.fn(),
history: jest.fn()
};
let instance = null;
beforeEach(() => {
instance = shallow(<NotificationView {...props}/>);
});
it('should render the notification component', () => {
expect(instance.exists()).toEqual(true);
});
it('should find the elements of the notification component', () => {
const notification = instance.find(Notification);
const notificationActionBar = instance.find(NotificationActionBar);
expect(notification.exists()).toBe(true);
expect(notificationActionBar.exists()).toBe(true);
});
TypeError: Enzyme::Selector expects a string, object, or Component Constructor
try
console.logging them and confirm
Hi, I am new to enzyme.
I am trying to test my functional component, but shallow returns me always null. Any idea where I should look at?
const wrapper = shallow(<MyComponent />);I do have set adapter in setupTest.js (app created with create-react-app)
import '@testing-library/jest-dom/extend-expect';
import { configure } from "enzyme";
import Adapter from "enzyme-adapter-react-16";
configure({ adapter: new Adapter() });I have tried to shallow on direct html element and this works fine.
const wrapper = shallow(<div >test</div>);For check I use
console.log(wrapper.first().html())
2 replies
I am calling a member function of a class component using enzyme in a unit test, and that function calls the
this.setState
but the state of my component is not updating
class MyComp extends React.Component {
state = { value: '' }
handleChange = (e) => {
this.setState({ value: e.target.value }, () => {
// do sommething else
});
}
render() {
return (
<input onChange={ this.handleChange } />
)
}
}
const wrapper = shallow(<MyComp />);
wrapper.find('input').simulate('change', {
target: {
value: 1,
name: 0
}
});
expect(wrapper.state().value).toEqual('1'); // this gives error as it is receiving state.value as ''
Can anyone please help me understand why the component's internal
setState is not working?
this.setState shouldn't be given an object, it should be given a callback
altho hm
that should work. but since you do
handleChange =, instead of a proper bound prototype method, that means you also can't mock it out
(don't put functions in class fields)
Hi everyone, I'm new to web development and I've started using enzyme a few days ago.
I am using
Unlike with
I have two questions:
I am using
mount to load a component into the DOM. One of its children is a Blueprint3.Select component whose value I want to change.Unlike with
shallow, I cannot use simulate on the react component to change its value which is wrapped in a <div>.I have two questions:
- Is there a way I can manipulate the DOM directly to set the value of the
<div>of this component? - Can we use
simulateon React component when usingmount?
if you want to invoke a prop function, use
.invoke
I have a component wrapper with a Provider and store and I simulate a click event. I want to test that some state prop has change but nothing changes
Hi, I am having an issue with getting enzyme to work in our react 16 app:
Is there anyone who could get in touch with me, we seem to have exhausted all the references and SO related links and we just can not get it to work. Please :(
Enzyme Internal Error: Enzyme expects an adapter to be configured, but found none.Is there anyone who could get in touch with me, we seem to have exhausted all the references and SO related links and we just can not get it to work. Please :(
We ended up abandoning Enzyme.
We were working in TS and just couldn't make it work.
Maybe you guys should reevaluate the docs because there are quite a few instances of people just not being able to get it to work.
i'm happy to improve the doc, but afaik using TS doesn't change anything, and https://enzymejs.github.io/enzyme/docs/installation/ covers configuring the adapter
here's the jest guide: https://enzymejs.github.io/enzyme/docs/guides/jest.html
Hey there. I'm facing an interesting problem that I can't figure out:
I got a form which I'm testing, so I get the submit button like this: button = wrapper.find('#notification-channel-add-button')
I then try so simulate a change event: input.simulate('change', { target: { value: 'Sample text' } })
Then, depending on how I test the disabled state of the button, I get different results:
// Correctly passes
expect(button.getDOMNode().hasAttribute('disabled')).toBeFalsy();
// This fails
expect(button.props().disabled).toBeFalsy();Has anyone ever faced this problem?
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Hello everyone!
Can anyone come across such a problem?
Can anyone come across such a problem?
The component is static and don't have asynchronous logic
