How to use the beforeEach function from mocha

Find comprehensive JavaScript mocha.beforeEach code examples handpicked from public code repositorys.

mocha.beforeEach is a function in the Mocha testing framework that executes a function before each test in a test suite.

aggregator-tests.js

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const session = new Session()
const cache = session.getCache('cache-client')
this.timeout(30000)

beforeEach(async () => {
  await cache.clear()
  await cache.set(val123, val123)
  await cache.set(val234, val234)
  await cache.set(val345, val345)

publish.test.js

GitHub: eclass/semantic-release-docker

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  tags.splice(0, tags.length)
  mock('dockerode', DockerMock)
  publish = require('../src/publish')
})

beforeEach(() => {
  tags.splice(0, tags.length)
})

it('expect a EDOCKERIMAGEPUSH error', async () => {

+ 2 other calls in file

How does mocha.beforeEach work?

mocha.beforeEach() is a function in the Mocha testing framework that allows you to define a function that will run before each test case in a test suite to set up any necessary state or configuration.

utilities.js

GitHub: star2star/star2star-js-ms-sdk

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const assert = require("assert");
const mocha = require("mocha");
const describe = mocha.describe;
const it = mocha.it;
const beforeEach = mocha.beforeEach;


//test requires
const s2sMS = require("../src/index");
const Util = require("../src/utilities");

rentalService.test.js

GitHub: jamangueira7/locacao-fita-nodejs-tdd

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        rentalRepository: rentalRepository,
    });
    categoryService = new CategoryService({ repository: categoryRepository });
});

beforeEach( async () => {
    sandbox = sinon.createSandbox();
    await write('categories_test.json', mocks.allCategories);
    await write('clients_test.json', mocks.allClients);
    await write('movies_test.json', mocks.allMovies);

+ 4 other calls in file

Ai Example

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beforeEach(function () {
  // do something before each test
});

In this example, the beforeEach hook is defined using mocha.beforeEach. The function passed to beforeEach will be executed before each test case.

Other functions in mocha

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