Top 10 Examples of "jest-when in functional component" in JavaScript
Dive into secure and efficient coding practices with our curated list of the top 10 examples showcasing 'jest-when' 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('Assert the args:', () => {
const fn = jest.fn();
when(fn)
.expectCalledWith(1)
.mockReturnValue('x');
let testPassed = false;
try {
fn(2); // Will throw a helpful jest assertion error with args diff
} catch (e) {
testPassed = true;
}
expect(testPassed).toBeTruthy();
});test("loadTestsFromDefaultProject return valid AngularProject from default project if angular-cli.json is present", async () => {
// Arrange
when((fileHelper.doesFileExists as any) as jest.Mock)
.calledWith("angular.json")
.mockReturnValue(false)
.calledWith(".angular-cli.json")
.mockReturnValue(true);
fileHelper.readJSONFile.mockReturnValue(angularCliJsonMock.mock);
const angularProjectConfigLoader = new AngularProjectConfigLoader(fileHelper);
// Act
const result = await angularProjectConfigLoader.getDefaultAngularProjectConfig("");
// Assert
verifyExpectedResults(result);
});it('given invalid ruleset should output errors', () => {
const flatRuleset = {
rules: {
'rule-1': simpleRule,
},
};
givenRulesets({
'flat-ruleset.yaml': flatRuleset,
});
validateRulesetMock.mockReturnValue(['fake errors']);
when(formatAjvMock)
.calledWith(['fake errors'])
.mockReturnValue('fake formatted message');
return expect(readRulesFromRulesets('flat-ruleset.yaml')).rejects.toEqual({
messages: ['fake formatted message', "Provided ruleset 'flat-ruleset.yaml' is not valid"],
});
});it('should supper verifyAllWhenMocksCalled', () => {
const fn1 = jest.fn();
const fn2 = jest.fn();
when(fn1)
.expectCalledWith(1)
.mockReturnValue('z');
when(fn2)
.expectCalledWith(1)
.mockReturnValueOnce('x');
when(fn2)
.expectCalledWith(1)
.mockReturnValueOnce('y');
when(fn2)
.expectCalledWith(1)
.mockReturnValue('z');
fn1(1);
fn2(1);
fn2(1);
fn2(1);
expect(verifyAllWhenMocksCalled).not.toThrow();
});it('Supports compound declarations:', () => {
const fn = jest.fn();
when(fn)
.calledWith(1)
.mockReturnValueOnce('no')
.mockReturnValue('yes');
when(fn)
.calledWith(2)
.mockReturnValue('way?');
when(fn)
.calledWith(3)
.mockResolvedValueOnce('no');
when(fn)
.calledWith(3)
.mockResolvedValue('yes');
when(fn)
.calledWith(4)
.mockRejectedValueOnce('no');
when(fn)
.calledWith(4)
.mockRejectedValue('yes');
expect(fn(1)).toEqual('no');
expect(fn(1)).toEqual('yes');
expect(fn(2)).toEqual('way?');
expect(fn(3)).resolves.toEqual('no');(ruleset.extends || []).forEach(extend =>
when(resolvePathMock)
.calledWith(key, extend)
.mockReturnValue(extend),
);.calledWith(undefined)
.mockReturnValue(true);
when(Lib.undefinedIsTrue)
.calledWith(true)
.mockReturnValue(true);
when(Lib.undefinedIsTrue)
.calledWith(false)
.mockReturnValue(false);
when(Lib.returnMatchedExpressionObject)
.calledWith(sampleState, 'default', 'youtube.com')
.mockReturnValue(whiteListYoutube);
when(Lib.returnMatchedExpressionObject)
.calledWith(sampleState, 'default', 'google.com')
.mockReturnValue(wildCardWhiteListGoogle);
when(Lib.returnMatchedExpressionObject)
.calledWith(sampleState, 'default', 'sub.google.com')
.mockReturnValue(wildCardWhiteListGoogle);
when(Lib.returnMatchedExpressionObject)
.calledWith(sampleState, 'firefox-container-1', 'facebook.com')
.mockReturnValue(wildCardGreyFacebook);
when(Lib.returnMatchedExpressionObject)
.calledWith(sampleState, 'default', 'examplewithcookiename.com')
.mockReturnValue(exampleWithCookieName);
when(Lib.returnMatchedExpressionObject)
.calledWith(
sampleState,
'default',
'exampleWithCookieNameCleanAllCookiesTrue.com',
)
.mockReturnValue(exampleWithCookieNameCleanAllCookiesTrue);
when(Lib.returnMatchedExpressionObject).mockReturnValue(false);
when(Lib.getHostname)
.calledWith('https://google.com/search')
.mockReturnValue('google.com');
when(Lib.getHostname)
.calledWith('http://facebook.com/search')
.mockReturnValue('facebook.com');
when(Lib.getHostname)
.calledWith('http://sub.domain.com')
.mockReturnValue('sub.domain.com');
when(Lib.extractMainDomain)
.calledWith('google.com')
.mockReturnValue('google.com');
when(Lib.extractMainDomain)
.calledWith('facebook.com')
.mockReturnValue('facebook.com');
when(Lib.extractMainDomain)
.calledWith('sub.domain.com')
.mockReturnValue('domain.com');
});beforeAll(() => {
global.browser = {
i18n: {
getMessage: () => '',
},
};
when(Lib.undefinedIsTrue)
.calledWith(undefined)
.mockReturnValue(true);
when(Lib.undefinedIsTrue)
.calledWith(true)
.mockReturnValue(true);
when(Lib.undefinedIsTrue)
.calledWith(false)
.mockReturnValue(false);
when(Lib.returnMatchedExpressionObject)
.calledWith(sampleState, 'default', 'youtube.com')
.mockReturnValue(whiteListYoutube);
when(Lib.returnMatchedExpressionObject)
.calledWith(sampleState, 'default', 'google.com')
.mockReturnValue(wildCardWhiteListGoogle);
when(Lib.returnMatchedExpressionObject)
.calledWith(sampleState, 'default', 'sub.google.com')
.mockReturnValue(wildCardWhiteListGoogle);
when(Lib.returnMatchedExpressionObject)
.calledWith(sampleState, 'firefox-container-1', 'facebook.com')
.mockReturnValue(wildCardGreyFacebook);
when(Lib.returnMatchedExpressionObject).calledWith('http://facebook.com/search')
.mockReturnValue(true);
when(Lib.isAWebpage)
.calledWith('http://sub.domain.com')
.mockReturnValue(true);
when(Lib.isAWebpage)
.calledWith('moz-extension://test/settings/settings.html')
.mockReturnValue(false);
when(Lib.getHostname)
.calledWith('https://google.com/search')
.mockReturnValue('google.com');
when(Lib.getHostname)
.calledWith('http://facebook.com/search')
.mockReturnValue('facebook.com');
when(Lib.getHostname)
.calledWith('http://sub.domain.com')
.mockReturnValue('sub.domain.com');
when(Lib.extractMainDomain)
.calledWith('google.com')
.mockReturnValue('google.com');
when(Lib.extractMainDomain)
.calledWith('facebook.com')
.mockReturnValue('facebook.com');
when(Lib.extractMainDomain)
.calledWith('sub.domain.com')
.mockReturnValue('domain.com');
});