mocking Articles

This are all our articles tagged with:
mocking

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Mocking private helper functions with Jest?

For example if you have the module: //sumWrapper.js const sum = (a, b) => { … Read more Mocking private helper functions with Jest?

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Testing a CallBack function in a function which get triggered forButton Onclick using jest

I have a React child component which has button export function Banner({argumentSetter}){ function handleOnClick(){ argumentSetter(argument.READ); … Read more Testing a CallBack function in a function which get triggered forButton Onclick using jest

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Prevent React from warning about specific unrecognized mock properties

Is there a way have React ignore specific properties at unit test time to avoid … Read more Prevent React from warning about specific unrecognized mock properties

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jest: mock response in googleapis NodeJS library

I’m trying to mock the response from a nested method in the googleapis NodeJS client … Read more jest: mock response in googleapis NodeJS library

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How to clean-up / reset redis-mock in an Express Jest test?

I have an app which tallies the number of visits to the url. The tallying … Read more How to clean-up / reset redis-mock in an Express Jest test?

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Why do I get cy.intercept is not a function?

I am trying to intercept a POST request but I’m getting the following error: enter … Read more Why do I get cy.intercept is not a function?

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Sinon stub – mocking a function which returns an array of objects

I am trying to stub the following code async function logUpdate(client) { const results = … Read more Sinon stub – mocking a function which returns an array of objects

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React testing library waitFor is not working

I have a react app using graphql, apollo client, for testing jest, and react-testing-library. So … Read more React testing library waitFor is not working

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Is it possible to Mock an Angular FormGroup by creating a Provider?

I want to create a "Testbed" for storybook and embed a component which requires a … Read more Is it possible to Mock an Angular FormGroup by creating a Provider?

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Jest Mocks – changing the property of a mock property / function on mocks

Say i want to keep seperation between simple modules in a practice tech test (boris-bikes), … Read more Jest Mocks – changing the property of a mock property / function on mocks

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how to write codes for mocking api request using jestjs on axios

Currently, I’m working on a node.js CLI app. This code is written for taking an … Read more how to write codes for mocking api request using jestjs on axios

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Automatic mock on an ES6 class fails (Jest, Vanilla JavaScript)

I have the class FooStorage that has an Array of Foo objects as a member … Read more Automatic mock on an ES6 class fails (Jest, Vanilla JavaScript)

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How to mock getState() in flux using jest

I have some problem with mocking my stores in flux. I’m using jest and react … Read more How to mock getState() in flux using jest

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Jest warning about an uninitialized event

I joined a project with lots of flaking unit tests causing intermittent pipeline failures. Started … Read more Jest warning about an uninitialized event

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Function is not calling mocked constructor in Jest test

I have a setup similar to this question but the partial mocking answer is not … Read more Function is not calling mocked constructor in Jest test