data-provider-temporary/examples/message/node_modules/jest-matchers/build/matchers.js

Library that helps with server-to-client synchronization of data

'use strict';











const diff = require('jest-diff'); /**
                                    * Copyright (c) 2014, Facebook, Inc. All rights reserved.
                                    *
                                    * This source code is licensed under the BSD-style license found in the
                                    * LICENSE file in the root directory of this source tree. An additional grant
                                    * of patent rights can be found in the PATENTS file in the same directory.
                                    *
                                    * 
                                    */var _require = require('jest-regex-util');const escapeStrForRegex = _require.escapeStrForRegex;var _require2 =



require('jest-matcher-utils');const EXPECTED_COLOR = _require2.EXPECTED_COLOR,RECEIVED_COLOR = _require2.RECEIVED_COLOR,ensureNoExpected = _require2.ensureNoExpected,ensureNumbers = _require2.ensureNumbers,getType = _require2.getType,matcherHint = _require2.matcherHint,printReceived = _require2.printReceived,printExpected = _require2.printExpected,printWithType = _require2.printWithType;var _require3 =
require('./utils');const getObjectSubset = _require3.getObjectSubset,getPath = _require3.getPath,hasOwnProperty = _require3.hasOwnProperty;var _require4 =
require('./jasmine-utils');const equals = _require4.equals;








const IteratorSymbol = Symbol.iterator;

const hasIterator = object => !!(object != null && object[IteratorSymbol]);
const iterableEquality = (a, b) => {
  if (
  typeof a !== 'object' ||
  typeof b !== 'object' ||
  Array.isArray(a) ||
  Array.isArray(b) ||
  !hasIterator(a) ||
  !hasIterator(b))
  {
    return undefined;
  }
  if (a.constructor !== b.constructor) {
    return false;
  }
  const bIterator = b[IteratorSymbol]();

  for (const aValue of a) {
    const nextB = bIterator.next();
    if (nextB.done || !equals(aValue, nextB.value, [iterableEquality])) {
      return false;
    }
  }
  if (!bIterator.next().done) {
    return false;
  }
  return true;
};
const isObjectWithKeys = a =>
a !== null &&
typeof a === 'object' &&
!(a instanceof Array) &&
!(a instanceof Date);
const subsetEquality = (object, subset) => {
  if (!isObjectWithKeys(object) || !isObjectWithKeys(subset)) {
    return undefined;
  }
  return Object.keys(subset).every(
  key =>
  hasOwnProperty(object, key) &&
  equals(object[key], subset[key], [iterableEquality, subsetEquality]));

};

const matchers = {
  toBe(received, expected) {
    const pass = received === expected;

    const message = pass ?
    () =>
    matcherHint('.not.toBe') +
    '\n\n' +
    `Expected value to not be (using ===):\n` +
    `  ${printExpected(expected)}\n` +
    `Received:\n` +
    `  ${printReceived(received)}` :
    () => {
      const diffString = diff(expected, received, {
        expand: this.expand });

      return (
        matcherHint('.toBe') +
        '\n\n' +
        `Expected value to be (using ===):\n` +
        `  ${printExpected(expected)}\n` +
        `Received:\n` +
        `  ${printReceived(received)}` + (
        diffString ? `\n\nDifference:\n\n${diffString}` : ''));

    };

    // Passing the the actual and expected objects so that a custom reporter
    // could access them, for example in order to display a custom visual diff,
    // or create a different error message
    return { actual: received, expected, message, name: 'toBe', pass };
  },

  toBeCloseTo(actual, expected) {let precision = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : 2;
    ensureNumbers(actual, expected, '.toBeCloseTo');
    const pass = Math.abs(expected - actual) < Math.pow(10, -precision) / 2;
    const message = pass ?
    () =>
    matcherHint('.not.toBeCloseTo', 'received', 'expected, precision') +
    '\n\n' +
    `Expected value not to be close to (with ${printExpected(precision)}-digit precision):\n` +
    `  ${printExpected(expected)}\n` +
    `Received:\n` +
    `  ${printReceived(actual)}` :
    () =>
    matcherHint('.toBeCloseTo', 'received', 'expected, precision') +
    '\n\n' +
    `Expected value to be close to (with ${printExpected(precision)}-digit precision):\n` +
    `  ${printExpected(expected)}\n` +
    `Received:\n` +
    `  ${printReceived(actual)}`;

    return { message, pass };
  },

  toBeDefined(actual, expected) {
    ensureNoExpected(expected, '.toBeDefined');
    const pass = actual !== void 0;
    const message = pass ?
    () =>
    matcherHint('.not.toBeDefined', 'received', '') +
    '\n\n' +
    `Expected value not to be defined, instead received\n` +
    `  ${printReceived(actual)}` :
    () =>
    matcherHint('.toBeDefined', 'received', '') +
    '\n\n' +
    `Expected value to be defined, instead received\n` +
    `  ${printReceived(actual)}`;
    return { message, pass };
  },

  toBeFalsy(actual, expected) {
    ensureNoExpected(expected, '.toBeFalsy');
    const pass = !actual;
    const message = pass ?
    () =>
    matcherHint('.not.toBeFalsy', 'received', '') +
    '\n\n' +
    `Expected value not to be falsy, instead received\n` +
    `  ${printReceived(actual)}` :
    () =>
    matcherHint('.toBeFalsy', 'received', '') +
    '\n\n' +
    `Expected value to be falsy, instead received\n` +
    `  ${printReceived(actual)}`;
    return { message, pass };
  },

  toBeGreaterThan(actual, expected) {
    ensureNumbers(actual, expected, '.toBeGreaterThan');
    const pass = actual > expected;
    const message = pass ?
    () =>
    matcherHint('.not.toBeGreaterThan') +
    '\n\n' +
    `Expected value not to be greater than:\n` +
    `  ${printExpected(expected)}\n` +
    `Received:\n` +
    `  ${printReceived(actual)}` :
    () =>
    matcherHint('.toBeGreaterThan') +
    '\n\n' +
    `Expected value to be greater than:\n` +
    `  ${printExpected(expected)}\n` +
    `Received:\n` +
    `  ${printReceived(actual)}`;
    return { message, pass };
  },

  toBeGreaterThanOrEqual(actual, expected) {
    ensureNumbers(actual, expected, '.toBeGreaterThanOrEqual');
    const pass = actual >= expected;
    const message = pass ?
    () =>
    matcherHint('.not.toBeGreaterThanOrEqual') +
    '\n\n' +
    `Expected value not to be greater than or equal:\n` +
    `  ${printExpected(expected)}\n` +
    `Received:\n` +
    `  ${printReceived(actual)}` :
    () =>
    matcherHint('.toBeGreaterThanOrEqual') +
    '\n\n' +
    `Expected value to be greater than or equal:\n` +
    `  ${printExpected(expected)}\n` +
    `Received:\n` +
    `  ${printReceived(actual)}`;
    return { message, pass };
  },

  toBeInstanceOf(received, constructor) {
    const constType = getType(constructor);

    if (constType !== 'function') {
      throw new Error(
      matcherHint('[.not].toBeInstanceOf', 'value', 'constructor') +
      `\n\n` +
      `Expected constructor to be a function. Instead got:\n` +
      `  ${printExpected(constType)}`);

    }
    const pass = received instanceof constructor;

    const message = pass ?
    () =>
    matcherHint('.not.toBeInstanceOf', 'value', 'constructor') +
    '\n\n' +
    `Expected value not to be an instance of:\n` +
    `  ${printExpected(constructor.name || constructor)}\n` +
    `Received:\n` +
    `  ${printReceived(received)}\n` :
    () =>
    matcherHint('.toBeInstanceOf', 'value', 'constructor') +
    '\n\n' +
    `Expected value to be an instance of:\n` +
    `  ${printExpected(constructor.name || constructor)}\n` +
    `Received:\n` +
    `  ${printReceived(received)}\n` +
    `Constructor:\n` +
    `  ${printReceived(received.constructor && received.constructor.name)}`;

    return { message, pass };
  },

  toBeLessThan(actual, expected) {
    ensureNumbers(actual, expected, '.toBeLessThan');
    const pass = actual < expected;
    const message = pass ?
    () =>
    matcherHint('.not.toBeLessThan') +
    '\n\n' +
    `Expected value not to be less than:\n` +
    `  ${printExpected(expected)}\n` +
    `Received:\n` +
    `  ${printReceived(actual)}` :
    () =>
    matcherHint('.toBeLessThan') +
    '\n\n' +
    `Expected value to be less than:\n` +
    `  ${printExpected(expected)}\n` +
    `Received:\n` +
    `  ${printReceived(actual)}`;
    return { message, pass };
  },

  toBeLessThanOrEqual(actual, expected) {
    ensureNumbers(actual, expected, '.toBeLessThanOrEqual');
    const pass = actual <= expected;
    const message = pass ?
    () =>
    matcherHint('.not.toBeLessThanOrEqual') +
    '\n\n' +
    `Expected value not to be less than or equal:\n` +
    `  ${printExpected(expected)}\n` +
    `Received:\n` +
    `  ${printReceived(actual)}` :
    () =>
    matcherHint('.toBeLessThanOrEqual') +
    '\n\n' +
    `Expected value to be less than or equal:\n` +
    `  ${printExpected(expected)}\n` +
    `Received:\n` +
    `  ${printReceived(actual)}`;
    return { message, pass };
  },

  toBeNaN(actual, expected) {
    ensureNoExpected(expected, '.toBeNaN');
    const pass = Number.isNaN(actual);
    const message = pass ?
    () =>
    matcherHint('.not.toBeNaN', 'received', '') +
    '\n\n' +
    `Expected value not to be NaN, instead received\n` +
    `  ${printReceived(actual)}` :
    () =>
    matcherHint('.toBeNaN', 'received', '') +
    '\n\n' +
    `Expected value to be NaN, instead received\n` +
    `  ${printReceived(actual)}`;
    return { message, pass };
  },

  toBeNull(actual, expected) {
    ensureNoExpected(expected, '.toBeNull');
    const pass = actual === null;
    const message = pass ?
    () =>
    matcherHint('.not.toBeNull', 'received', '') +
    '\n\n' +
    `Expected value not to be null, instead received\n` +
    `  ${printReceived(actual)}` :
    () =>
    matcherHint('.toBeNull', 'received', '') +
    '\n\n' +
    `Expected value to be null, instead received\n` +
    `  ${printReceived(actual)}`;
    return { message, pass };
  },

  toBeTruthy(actual, expected) {
    ensureNoExpected(expected, '.toBeTruthy');
    const pass = !!actual;
    const message = pass ?
    () =>
    matcherHint('.not.toBeTruthy', 'received', '') +
    '\n\n' +
    `Expected value not to be truthy, instead received\n` +
    `  ${printReceived(actual)}` :
    () =>
    matcherHint('.toBeTruthy', 'received', '') +
    '\n\n' +
    `Expected value to be truthy, instead received\n` +
    `  ${printReceived(actual)}`;
    return { message, pass };
  },

  toBeUndefined(actual, expected) {
    ensureNoExpected(expected, '.toBeUndefined');
    const pass = actual === void 0;
    const message = pass ?
    () =>
    matcherHint('.not.toBeUndefined', 'received', '') +
    '\n\n' +
    `Expected value not to be undefined, instead received\n` +
    `  ${printReceived(actual)}` :
    () =>
    matcherHint('.toBeUndefined', 'received', '') +
    '\n\n' +
    `Expected value to be undefined, instead received\n` +
    `  ${printReceived(actual)}`;

    return { message, pass };
  },

  toContain(collection, value) {
    const collectionType = getType(collection);

    let converted = null;
    if (Array.isArray(collection) || typeof collection === 'string') {
      // strings have `indexOf` so we don't need to convert
      // arrays have `indexOf` and we don't want to make a copy
      converted = collection;
    } else {
      try {
        converted = Array.from(collection);
      } catch (e) {
        throw new Error(
        matcherHint('[.not].toContainEqual', 'collection', 'value') +
        '\n\n' +
        `Expected ${RECEIVED_COLOR('collection')} to be an array-like structure.\n` +
        printWithType('Received', collection, printReceived));

      }
    }
    // At this point, we're either a string or an Array,
    // which was converted from an array-like structure.
    const pass = converted.indexOf(value) != -1;
    const message = pass ?
    () =>
    matcherHint('.not.toContain', collectionType, 'value') +
    '\n\n' +
    `Expected ${collectionType}:\n` +
    `  ${printReceived(collection)}\n` +
    `Not to contain value:\n` +
    `  ${printExpected(value)}\n` :
    () =>
    matcherHint('.toContain', collectionType, 'value') +
    '\n\n' +
    `Expected ${collectionType}:\n` +
    `  ${printReceived(collection)}\n` +
    `To contain value:\n` +
    `  ${printExpected(value)}`;

    return { message, pass };
  },

  toContainEqual(collection, value) {
    const collectionType = getType(collection);
    let converted = null;
    if (Array.isArray(collection)) {
      converted = collection;
    } else {
      try {
        converted = Array.from(collection);
      } catch (e) {
        throw new Error(
        matcherHint('[.not].toContainEqual', 'collection', 'value') +
        '\n\n' +
        `Expected ${RECEIVED_COLOR('collection')} to be an array-like structure.\n` +
        printWithType('Received', collection, printReceived));

      }
    }

    const pass =
    converted.findIndex(item => equals(item, value, [iterableEquality])) !==
    -1;
    const message = pass ?
    () =>
    matcherHint('.not.toContainEqual', collectionType, 'value') +
    '\n\n' +
    `Expected ${collectionType}:\n` +
    `  ${printReceived(collection)}\n` +
    `Not to contain a value equal to:\n` +
    `  ${printExpected(value)}\n` :
    () =>
    matcherHint('.toContainEqual', collectionType, 'value') +
    '\n\n' +
    `Expected ${collectionType}:\n` +
    `  ${printReceived(collection)}\n` +
    `To contain a value equal to:\n` +
    `  ${printExpected(value)}`;

    return { message, pass };
  },

  toEqual(received, expected) {
    const pass = equals(received, expected, [iterableEquality]);

    const message = pass ?
    () =>
    matcherHint('.not.toEqual') +
    '\n\n' +
    `Expected value to not equal:\n` +
    `  ${printExpected(expected)}\n` +
    `Received:\n` +
    `  ${printReceived(received)}` :
    () => {
      const diffString = diff(expected, received, {
        expand: this.expand });

      return (
        matcherHint('.toEqual') +
        '\n\n' +
        `Expected value to equal:\n` +
        `  ${printExpected(expected)}\n` +
        `Received:\n` +
        `  ${printReceived(received)}` + (
        diffString ? `\n\nDifference:\n\n${diffString}` : ''));

    };

    // Passing the the actual and expected objects so that a custom reporter
    // could access them, for example in order to display a custom visual diff,
    // or create a different error message
    return { actual: received, expected, message, name: 'toEqual', pass };
  },

  toHaveLength(received, length) {
    if (
    typeof received !== 'string' && (
    !received || typeof received.length !== 'number'))
    {
      throw new Error(
      matcherHint('[.not].toHaveLength', 'received', 'length') +
      '\n\n' +
      `Expected value to have a 'length' property that is a number. ` +
      `Received:\n` +
      `  ${printReceived(received)}\n` + (
      received ?
      `received.length:\n  ${printReceived(received.length)}` :
      ''));

    }

    const pass = received.length === length;
    const message = pass ?
    () =>
    matcherHint('.not.toHaveLength', 'received', 'length') +
    '\n\n' +
    `Expected value to not have length:\n` +
    `  ${printExpected(length)}\n` +
    `Received:\n` +
    `  ${printReceived(received)}\n` +
    `received.length:\n` +
    `  ${printReceived(received.length)}` :
    () =>
    matcherHint('.toHaveLength', 'received', 'length') +
    '\n\n' +
    `Expected value to have length:\n` +
    `  ${printExpected(length)}\n` +
    `Received:\n` +
    `  ${printReceived(received)}\n` +
    `received.length:\n` +
    `  ${printReceived(received.length)}`;

    return { message, pass };
  },

  toHaveProperty(object, keyPath, value) {
    const valuePassed = arguments.length === 3;

    if (!object && typeof object !== 'string' && typeof object !== 'number') {
      throw new Error(
      matcherHint('[.not].toHaveProperty', 'object', 'path', {
        secondArgument: valuePassed ? 'value' : null }) +

      '\n\n' +
      `Expected ${RECEIVED_COLOR('object')} to be an object. Received:\n` +
      `  ${getType(object)}: ${printReceived(object)}`);

    }

    if (getType(keyPath) !== 'string') {
      throw new Error(
      matcherHint('[.not].toHaveProperty', 'object', 'path', {
        secondArgument: valuePassed ? 'value' : null }) +

      '\n\n' +
      `Expected ${EXPECTED_COLOR('path')} to be a string. Received:\n` +
      `  ${getType(keyPath)}: ${printReceived(keyPath)}`);

    }

    const result = getPath(object, keyPath);const
    lastTraversedObject = result.lastTraversedObject,hasEndProp = result.hasEndProp;

    let diffString;

    if (valuePassed && hasOwnProperty(result, 'value')) {
      diffString = diff(value, result.value, {
        expand: this.expand });

    }

    const pass = valuePassed ?
    equals(result.value, value, [iterableEquality]) :
    hasEndProp;

    if (hasOwnProperty(result, 'value')) {
      // we don't diff numbers. So instead we'll show the object that contains the resulting value.
      // And to get that object we need to go up a level.
      result.traversedPath.pop();
    }
    const traversedPath = result.traversedPath.join('.');

    const message = pass ?
    matcherHint('.not.toHaveProperty', 'object', 'path', {
      secondArgument: valuePassed ? 'value' : null }) +

    '\n\n' +
    `Expected the object:\n` +
    `  ${printReceived(object)}\n` +
    `Not to have a nested property:\n` +
    `  ${printExpected(keyPath)}\n` + (
    valuePassed ? `With a value of:\n  ${printExpected(value)}\n` : '') :
    matcherHint('.toHaveProperty', 'object', 'path', {
      secondArgument: valuePassed ? 'value' : null }) +

    '\n\n' +
    `Expected the object:\n` +
    `  ${printReceived(object)}\n` +
    `To have a nested property:\n` +
    `  ${printExpected(keyPath)}\n` + (
    valuePassed ? `With a value of:\n  ${printExpected(value)}\n` : '') + (
    traversedPath ?
    `Received:\n  ${RECEIVED_COLOR('object')}.${traversedPath}: ${printReceived(lastTraversedObject)}` :
    '') + (
    diffString ? `\nDifference:\n\n${diffString}` : '');
    if (pass === undefined) {
      throw new Error('pass must be initialized');
    }

    return { message, pass };
  },

  toMatch(received, expected) {
    if (typeof received !== 'string') {
      throw new Error(
      matcherHint('[.not].toMatch', 'string', 'expected') +
      '\n\n' +
      `${RECEIVED_COLOR('string')} value must be a string.\n` +
      printWithType('Received', received, printReceived));

    }

    if (!(expected instanceof RegExp) && !(typeof expected === 'string')) {
      throw new Error(
      matcherHint('[.not].toMatch', 'string', 'expected') +
      '\n\n' +
      `${EXPECTED_COLOR('expected')} value must be a string or a regular expression.\n` +
      printWithType('Expected', expected, printExpected));

    }

    const pass = new RegExp(
    typeof expected === 'string' ? escapeStrForRegex(expected) : expected).
    test(received);
    const message = pass ?
    () =>
    matcherHint('.not.toMatch') +
    `\n\nExpected value not to match:\n` +
    `  ${printExpected(expected)}` +
    `\nReceived:\n` +
    `  ${printReceived(received)}` :
    () =>
    matcherHint('.toMatch') +
    `\n\nExpected value to match:\n` +
    `  ${printExpected(expected)}` +
    `\nReceived:\n` +
    `  ${printReceived(received)}`;

    return { message, pass };
  },

  toMatchObject(receivedObject, expectedObject) {
    if (typeof receivedObject !== 'object' || receivedObject === null) {
      throw new Error(
      matcherHint('[.not].toMatchObject', 'object', 'expected') +
      '\n\n' +
      `${RECEIVED_COLOR('received')} value must be an object.\n` +
      printWithType('Received', receivedObject, printReceived));

    }

    if (typeof expectedObject !== 'object' || expectedObject === null) {
      throw new Error(
      matcherHint('[.not].toMatchObject', 'object', 'expected') +
      '\n\n' +
      `${EXPECTED_COLOR('expected')} value must be an object.\n` +
      printWithType('Expected', expectedObject, printExpected));

    }

    const pass = equals(receivedObject, expectedObject, [
    iterableEquality,
    subsetEquality]);


    const message = pass ?
    () =>
    matcherHint('.not.toMatchObject') +
    `\n\nExpected value not to match object:\n` +
    `  ${printExpected(expectedObject)}` +
    `\nReceived:\n` +
    `  ${printReceived(receivedObject)}` :
    () => {
      const diffString = diff(
      expectedObject,
      getObjectSubset(receivedObject, expectedObject),
      {
        expand: this.expand });


      return (
        matcherHint('.toMatchObject') +
        `\n\nExpected value to match object:\n` +
        `  ${printExpected(expectedObject)}` +
        `\nReceived:\n` +
        `  ${printReceived(receivedObject)}` + (
        diffString ? `\nDifference:\n${diffString}` : ''));

    };

    return { message, pass };
  } };


module.exports = matchers;