CODEWITHSUNDEEP
javascriptjestjs
HMR
HMR

Reputation: 39270

Run one test file with jest

Installed jest:

yarn add jest

Add a file in ./src/index.js with the content:

test('First test', () => {
  expect(true).toBe(true);
});

Try to run it with:

node node_modules/jest/bin/jest.js src/index.js

or

node node_modules/jest/bin/jest.js ./src/index.js

But all I get is:

No tests found
In /home/me/dev/lib
  7 files checked.
  testMatch: **/__tests__/**/*.js?(x),**/?(*.)(spec|test).js?(x) - 0 matches
  testPathIgnorePatterns: /node_modules/ - 7 matches
Pattern: ./src/index.js - 0 matches

Just would like to run the one file without having to go through the pain of setting up a directory convention or config file. Is this possible?

Upvotes: 0

Views: 4232

Answers (2)

Swift
Swift

Reputation: 897

import LoggerService from '../LoggerService ';

describe('Method called****', () => {
  it('00000000', () => {
    const logEvent = jest.spyOn(LoggerService , 'logEvent');
    expect(logEvent).toBeDefined();
  });
});

npm test -- tests/LoggerService .test.ts -t '00000000'

Upvotes: 0

spoonscen
spoonscen

Reputation: 117

From Jest's website

Place your tests in a __tests__ folder, or name your test files with a .spec.js or .test.js extension. Whatever you prefer, Jest will find and run your tests.

You can see in the test match

testMatch: **/__tests__/**/*.js?(x),**/?(*.)(spec|test).js?(x) - 0 matches

It is looking for files that are .spec or .test and end in .js or .jsx

Upvotes: 1

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