@wordpress/jest-console/build-module/matchers.js

Custom Jest matchers for the Console object.

/**
 * External dependencies
 */
import { matcherHint, printExpected, printReceived } from 'jest-matcher-utils';

/**
 * Internal dependencies
 */
import supportedMatchers from './supported-matchers';
const createErrorMessage = spyInfo => {
  const {
    spy,
    pass,
    calls,
    matcherName,
    methodName,
    expected
  } = spyInfo;
  const hint = pass ? `.not${matcherName}` : matcherName;
  const message = pass ? `Expected mock function not to be called but it was called with:\n${calls.map(printReceived)}` : `Expected mock function to be called${expected ? ` with:\n${printExpected(expected)}\n` : '.'}\nbut it was called with:\n${calls.map(printReceived)}`;
  return () => `${matcherHint(hint, spy.getMockName())}` + '\n\n' + message + '\n\n' + `console.${methodName}() should not be used unless explicitly expected\n` + 'See https://www.npmjs.com/package/@wordpress/jest-console for details.';
};
const createSpyInfo = (spy, matcherName, methodName, expected) => {
  const calls = spy.mock.calls;
  const pass = expected ? JSON.stringify(calls).includes(JSON.stringify(expected)) : calls.length > 0;
  const message = createErrorMessage({
    spy,
    pass,
    calls,
    matcherName,
    methodName,
    expected
  });
  return {
    pass,
    message
  };
};
const createToHaveBeenCalledMatcher = (matcherName, methodName) => received => {
  const spy = received[methodName];
  const spyInfo = createSpyInfo(spy, matcherName, methodName);
  spy.assertionsNumber += 1;
  return spyInfo;
};
const createToHaveBeenCalledWith = (matcherName, methodName) => function (received, ...expected) {
  const spy = received[methodName];
  const spyInfo = createSpyInfo(spy, matcherName, methodName, expected);
  spy.assertionsNumber += 1;
  return spyInfo;
};
expect.extend(Object.entries(supportedMatchers).reduce((result, [methodName, matcherName]) => {
  const matcherNameWith = `${matcherName}With`;
  return {
    ...result,
    [matcherName]: createToHaveBeenCalledMatcher(`.${matcherName}`, methodName),
    [matcherNameWith]: createToHaveBeenCalledWith(`.${matcherNameWith}`, methodName)
  };
}, {}));
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