Top 10 Examples of "jest-mock in functional component" in JavaScript
Dive into secure and efficient coding practices with our curated list of the top 10 examples showcasing 'jest-mock' in functional components in JavaScript. Our advanced machine learning engine meticulously scans each line of code, cross-referencing millions of open source libraries to ensure your implementation is not just functional, but also robust and secure. Elevate your React applications to new heights by mastering the art of handling side effects, API calls, and asynchronous operations with confidence and precision.
it('renders correctly', () => {
const props = {
region: mockRegion,
save: mock.fn(),
load: mock.fn(),
create: mock.fn(),
deleteRegion: mock.fn(),
setLocally: mock.fn(),
setCenter: mock.fn()
}
// mount component
const {snapshot} = mockWithProvider()
expect(snapshot()).toMatchSnapshot()
const noCalls = [
'save',
'load',
'setLocally',
'setCenter'
]
noCalls.forEach(fn => {
expect(props[fn]).not.toBeCalled()it('Stage AFTER_SUCCESS', (done) => {
const afterSuccess = {
_runAfterSuccess(dispatch, getState, data) {
return dispatch({type: 'foo', data});
}
};
const spy = mock.spyOn(afterSuccess, '_runAfterSuccess');
const configOptions = {
processors: {
[PROCESSOR_STAGE.AFTER_SUCCESS]: afterSuccess._runAfterSuccess
}
};
// Under test
store
.dispatch(loadEntity(entity, Promise.resolve({}), configOptions))
.then(() => {
expect(spy).toHaveBeenCalled();
})
.then(done)
.catch(done);
});it('Stage BEFORE_SUCCESS', (done) => {
const beforeSuccess = {
_runBeforeSuccess(dispatch, getState, data) {
return dispatch({type: 'foo', data});
}
};
const spy = mock.spyOn(beforeSuccess, '_runBeforeSuccess');
const configOptions = {
processors: {
[PROCESSOR_STAGE.BEFORE_SUCCESS]: beforeSuccess._runBeforeSuccess
}
};
// Under test
store
.dispatch(loadEntity(entity, Promise.resolve({}), configOptions))
.then(() => {
expect(spy).toHaveBeenCalled();
})
.then(done)
.catch(done);
});it('Stage BEFORE_FAILURE', (done) => {
const beforeFailure = {
_runBeforeFailure(dispatch, getState, data) {
return dispatch({type: 'foo', data});
}
};
const spy = mock.spyOn(beforeFailure, '_runBeforeFailure');
const configOptions = {
processors: {
[PROCESSOR_STAGE.BEFORE_FAILURE]: beforeFailure._runBeforeFailure
}
};
// Under test
store
.dispatch(loadEntity(entity, Promise.reject(new Error('Fake error')), configOptions))
.catch(() => {
expect(spy).toHaveBeenCalled();
done();
});
});
it('Stage BEFORE_FAILURE should return a new object', (done) => {it('Stage AFTER_FAILURE', (done) => {
const afterFailure = {
_runAfterFailure(dispatch, getState, data) {
return dispatch({type: 'foo', data});
}
};
const spy = mock.spyOn(afterFailure, '_runAfterFailure');
const configOptions = {
processors: {
[PROCESSOR_STAGE.BEFORE_FAILURE]: afterFailure._runAfterFailure
}
};
// Under test
store
.dispatch(loadEntity(entity, Promise.reject(new Error('Fake Error')), configOptions))
.catch(() => {
expect(spy).toHaveBeenCalled();
done();
});
});
});constructor(config) {
// lazy require
const {JSDOM} = require('jsdom');
this.document = new JSDOM('', {
url: config.testURL,
runScripts: 'dangerously'
});
const global = (this.global = this.document.window.document.defaultView);
// Node's error-message stack size is limited at 10, but it's pretty useful
// to see more than that when a test fails.
global.Error.stackTraceLimit = 100;
installCommonGlobals(global, config.globals);
this.moduleMocker = new mock.ModuleMocker(global);
this.fakeTimers = new FakeTimers(global, this.moduleMocker, config);
}constructor(config) {
// jest doesn't need full global before runScript, but to reduce possible issues we create full copy here
this.global = assign({}, global, deepCopy(config.globals));
this.moduleMocker = new ModuleMocker(global);
this.fakeTimers = new FakeTimers(this.global, this.moduleMocker, config);
}const originalAddListener = global.addEventListener
const originalRemoveListener = global.removeEventListener
global.addEventListener = function(...args) {
if (args[0] === 'error') {
userErrorListenerCount++
}
return originalAddListener.apply(this, args)
}
global.removeEventListener = function(...args) {
if (args[0] === 'error') {
userErrorListenerCount--
}
return originalRemoveListener.apply(this, args)
}
/* eslint-enable @typescript-eslint/unbound-method */
this.moduleMocker = new ModuleMocker(global)
const timerConfig = {
idToRef: id => id,
refToId: ref => ref,
}
this.fakeTimers = new JestFakeTimers({
config,
global,
moduleMocker: this.moduleMocker,
timerConfig,
})
this.global.jsdom = this.dom
}
setup() {import { MuiThemeProvider } from '@material-ui/core/styles';
import { getByText, render, waitForDomChange } from '@testing-library/react';
import jest from 'jest-mock';
import React from 'react';
import { BrowserRouter } from 'react-router-dom';
import API from '../../api/API';
import ApplicationItemGroupItem from '../../components/Applications/ApplicationItemGroupItem';
import { theme } from '../../TestHelpers/theme';
function mockResolver() {
return Promise.resolve(1);
}
const mockAjax = jest.fn(() => mockResolver);
describe('Application Item Group Item', () => {
const minProps = {
group: {
name: 'ABC',
application_id: '123',
id: '1',
channel: {
name: 'main',
},
},
appName: 'FlatCar',
};
beforeEach(() => {
API.getInstancesCount = mockAjax();
});
it('should render correct link and correct total instances', async () => {it('renders correctly', () => {
const tree = renderer.create(
<map>
</map>
).toJSON()
expect(tree).toMatchSnapshot()
})
})