https://github.com/rakannimer/create-function-mock

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https://github.com/rakannimer/create-function-mock

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Created with CodeSandbox

• Host: GitHub
• URL: https://github.com/rakannimer/create-function-mock
• Owner: rakannimer
• Created: 2018-06-24T11:02:34.000Z (over 6 years ago)
• Default Branch: master
• Last Pushed: 2018-06-24T11:27:11.000Z (over 6 years ago)
• Last Synced: 2024-12-16T22:13:55.318Z (2 months ago)
• Language: JavaScript
• Homepage: https://codesandbox.io/s/github/rakannimer/create-function-mock
• Size: 1.95 KB
• Stars: 0
• Watchers: 3
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: readme.js

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README

        
/** 

Usage

const asyncFunctionToMock = () => {

  return new Promise(resolve => {

    setTimeout(resolve, 500);

  }).then(() => "resolved");

};

const functionToMock = () => {

  console.log('I will not be called')

};

const mockedSyncFunction = createFunctionMock(functionToMock);

const mockedAsyncFunction = createFunctionMock(asyncFunctionToMock);

mockedFunction();

console.log(mockedFunction.mock);

*/

const createFunctionMock = (mockImplementation = () => {}) => {

  const mock = {

    calls: []

  };

  const mockedFunction = (...params) => {

    const mockReturn = mockImplementation(...params);

    mock.calls.push({ params });

    return mockReturn;

  };

  mockedFunction.mock = mock;

  mockedFunction.getCalls = () => mock.calls;

  return mockedFunction;

};

module.exports = {

  createFunctionMock

};