Jest: [BUG] Jest 16 breaks using `toHaveBeenCalledWith` with 0 arguments to test for functions that have been called without arguments

Do you want to request a _feature_ or report a _bug_?

Report a bug

What is the current behavior?

On Jest 16: testing toHaveBeenCalledWith with 0 arguments does not pass when a spy is called with 0 arguments

On Jest 15: testing toHaveBeenCalledWith with 0 arguments passes when a spy is called with 0 arguments

If the current behavior is a bug, please provide the steps to reproduce and if possible a minimal repository on GitHub that we can npm install and npm test.

Minimal test:

it('can check that a function is called without arguments', () => {
    let fn = jasmine.createSpy();

    fn();
    expect(fn).toHaveBeenCalledWith();
});

Repo: https://github.com/benmccormick/jest-no-args/tree/master

What is the expected behavior?

Testing using toHaveBeenCalledWith with 0 arguments should pass an assertion when a spy is called with 0 arguments

Run Jest again with --debug and provide the full configuration it prints. Please mention your node and npm version and operating system.

> node_modules/.bin/jest --debug                               
jest version = 16.0.1
test framework = jasmine2
config = {
  "rootDir": "/Users/ben/Code/experiments/jest-no-args",
  "name": "-Users-ben-Code-experiments-jest-no-args",
  "setupFiles": [],
  "testRunner": "/Users/ben/Code/experiments/jest-no-args/node_modules/jest-jasmine2/build/index.js",
  "scriptPreprocessor": "/Users/ben/Code/experiments/jest-no-args/node_modules/babel-jest/build/index.js",
  "usesBabelJest": true,
  "automock": false,
  "bail": false,
  "browser": false,
  "cacheDirectory": "/var/folders/wy/1r3js80s60q497r_lrjyb0bh0000gn/T/jest",
  "clearMocks": false,
  "coveragePathIgnorePatterns": [
    "/node_modules/"
  ],
  "coverageReporters": [
    "json",
    "text",
    "lcov",
    "clover"
  ],
  "globals": {},
  "haste": {
    "providesModuleNodeModules": []
  },
  "mocksPattern": "__mocks__",
  "moduleDirectories": [
    "node_modules"
  ],
  "moduleFileExtensions": [
    "js",
    "json",
    "jsx",
    "node"
  ],
  "moduleNameMapper": {},
  "modulePathIgnorePatterns": [],
  "noStackTrace": false,
  "notify": false,
  "preset": null,
  "preprocessorIgnorePatterns": [
    "/node_modules/"
  ],
  "resetModules": false,
  "testEnvironment": "jest-environment-jsdom",
  "testPathDirs": [
    "/Users/ben/Code/experiments/jest-no-args"
  ],
  "testPathIgnorePatterns": [
    "/node_modules/"
  ],
  "testRegex": "(/__tests__/.*|\\.(test|spec))\\.jsx?$",
  "testURL": "about:blank",
  "timers": "real",
  "useStderr": false,
  "verbose": null,
  "watch": false,
  "cache": true,
  "watchman": true,
  "testcheckOptions": {
    "times": 100,
    "maxSize": 200
  }
}
 FAIL  __tests__/test.js
  ● can check that a function is called without arguments

    expect(spy).toHaveBeenCalledWith(expected)

    Expected spy to have been called with:
      [undefined]
    But it was called with:
      Array []

      at Object.<anonymous>.it (__tests__/test.js:6:16)
      at process._tickCallback (internal/process/next_tick.js:103:7)

  ✕ can check that a function is called without arguments (5ms)

Test Suites: 1 failed, 1 total
Tests:       1 failed, 1 total
Snapshots:   0 total
Time:        0.822s
Ran all test suites.

Node Version: 6.7.0
NPM Version: 3.10.7