682 lines
20 KiB
JavaScript
682 lines
20 KiB
JavaScript
'use strict';
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const diff = require('jest-diff'); /**
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* Copyright (c) 2014, Facebook, Inc. All rights reserved.
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*
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* This source code is licensed under the BSD-style license found in the
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* LICENSE file in the root directory of this source tree. An additional grant
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* of patent rights can be found in the PATENTS file in the same directory.
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*
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*
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*/var _require = require('jest-regex-util');const escapeStrForRegex = _require.escapeStrForRegex;var _require2 =
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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 =
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require('./utils');const getObjectSubset = _require3.getObjectSubset,getPath = _require3.getPath,hasOwnProperty = _require3.hasOwnProperty;var _require4 =
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require('./jasmine-utils');const equals = _require4.equals;
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const IteratorSymbol = Symbol.iterator;
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const hasIterator = object => !!(object != null && object[IteratorSymbol]);
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const iterableEquality = (a, b) => {
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if (
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typeof a !== 'object' ||
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typeof b !== 'object' ||
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Array.isArray(a) ||
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Array.isArray(b) ||
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!hasIterator(a) ||
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!hasIterator(b))
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{
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return undefined;
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}
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if (a.constructor !== b.constructor) {
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return false;
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}
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const bIterator = b[IteratorSymbol]();
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for (const aValue of a) {
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const nextB = bIterator.next();
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if (nextB.done || !equals(aValue, nextB.value, [iterableEquality])) {
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return false;
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}
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}
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if (!bIterator.next().done) {
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return false;
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}
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return true;
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};
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const isObjectWithKeys = a =>
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a !== null &&
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typeof a === 'object' &&
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!(a instanceof Array) &&
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!(a instanceof Date);
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const subsetEquality = (object, subset) => {
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if (!isObjectWithKeys(object) || !isObjectWithKeys(subset)) {
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return undefined;
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}
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return Object.keys(subset).every(
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key =>
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hasOwnProperty(object, key) &&
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equals(object[key], subset[key], [iterableEquality, subsetEquality]));
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};
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const matchers = {
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toBe(received, expected) {
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const pass = received === expected;
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const message = pass ?
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() =>
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matcherHint('.not.toBe') +
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'\n\n' +
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`Expected value to not be (using ===):\n` +
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` ${printExpected(expected)}\n` +
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`Received:\n` +
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` ${printReceived(received)}` :
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() => {
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const diffString = diff(expected, received, {
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expand: this.expand });
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return (
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matcherHint('.toBe') +
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'\n\n' +
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`Expected value to be (using ===):\n` +
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` ${printExpected(expected)}\n` +
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`Received:\n` +
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` ${printReceived(received)}` + (
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diffString ? `\n\nDifference:\n\n${diffString}` : ''));
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};
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// Passing the the actual and expected objects so that a custom reporter
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// could access them, for example in order to display a custom visual diff,
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// or create a different error message
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return { actual: received, expected, message, name: 'toBe', pass };
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},
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toBeCloseTo(actual, expected) {let precision = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : 2;
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ensureNumbers(actual, expected, '.toBeCloseTo');
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const pass = Math.abs(expected - actual) < Math.pow(10, -precision) / 2;
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const message = pass ?
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() =>
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matcherHint('.not.toBeCloseTo', 'received', 'expected, precision') +
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'\n\n' +
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`Expected value not to be close to (with ${printExpected(precision)}-digit precision):\n` +
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` ${printExpected(expected)}\n` +
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`Received:\n` +
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` ${printReceived(actual)}` :
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() =>
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matcherHint('.toBeCloseTo', 'received', 'expected, precision') +
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'\n\n' +
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`Expected value to be close to (with ${printExpected(precision)}-digit precision):\n` +
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` ${printExpected(expected)}\n` +
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`Received:\n` +
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` ${printReceived(actual)}`;
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return { message, pass };
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},
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toBeDefined(actual, expected) {
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ensureNoExpected(expected, '.toBeDefined');
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const pass = actual !== void 0;
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const message = pass ?
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() =>
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matcherHint('.not.toBeDefined', 'received', '') +
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'\n\n' +
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`Expected value not to be defined, instead received\n` +
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` ${printReceived(actual)}` :
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() =>
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matcherHint('.toBeDefined', 'received', '') +
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'\n\n' +
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`Expected value to be defined, instead received\n` +
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` ${printReceived(actual)}`;
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return { message, pass };
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},
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toBeFalsy(actual, expected) {
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ensureNoExpected(expected, '.toBeFalsy');
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const pass = !actual;
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const message = pass ?
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() =>
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matcherHint('.not.toBeFalsy', 'received', '') +
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'\n\n' +
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`Expected value not to be falsy, instead received\n` +
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` ${printReceived(actual)}` :
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() =>
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matcherHint('.toBeFalsy', 'received', '') +
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'\n\n' +
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`Expected value to be falsy, instead received\n` +
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` ${printReceived(actual)}`;
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return { message, pass };
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},
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toBeGreaterThan(actual, expected) {
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ensureNumbers(actual, expected, '.toBeGreaterThan');
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const pass = actual > expected;
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const message = pass ?
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() =>
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matcherHint('.not.toBeGreaterThan') +
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'\n\n' +
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`Expected value not to be greater than:\n` +
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` ${printExpected(expected)}\n` +
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`Received:\n` +
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` ${printReceived(actual)}` :
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() =>
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matcherHint('.toBeGreaterThan') +
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'\n\n' +
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`Expected value to be greater than:\n` +
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` ${printExpected(expected)}\n` +
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`Received:\n` +
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` ${printReceived(actual)}`;
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return { message, pass };
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},
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toBeGreaterThanOrEqual(actual, expected) {
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ensureNumbers(actual, expected, '.toBeGreaterThanOrEqual');
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const pass = actual >= expected;
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const message = pass ?
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() =>
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matcherHint('.not.toBeGreaterThanOrEqual') +
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'\n\n' +
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`Expected value not to be greater than or equal:\n` +
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` ${printExpected(expected)}\n` +
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`Received:\n` +
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` ${printReceived(actual)}` :
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() =>
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matcherHint('.toBeGreaterThanOrEqual') +
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'\n\n' +
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`Expected value to be greater than or equal:\n` +
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` ${printExpected(expected)}\n` +
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`Received:\n` +
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` ${printReceived(actual)}`;
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return { message, pass };
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},
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toBeInstanceOf(received, constructor) {
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const constType = getType(constructor);
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if (constType !== 'function') {
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throw new Error(
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matcherHint('[.not].toBeInstanceOf', 'value', 'constructor') +
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`\n\n` +
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`Expected constructor to be a function. Instead got:\n` +
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` ${printExpected(constType)}`);
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}
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const pass = received instanceof constructor;
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const message = pass ?
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() =>
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matcherHint('.not.toBeInstanceOf', 'value', 'constructor') +
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'\n\n' +
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`Expected value not to be an instance of:\n` +
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` ${printExpected(constructor.name || constructor)}\n` +
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`Received:\n` +
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` ${printReceived(received)}\n` :
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() =>
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matcherHint('.toBeInstanceOf', 'value', 'constructor') +
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'\n\n' +
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`Expected value to be an instance of:\n` +
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` ${printExpected(constructor.name || constructor)}\n` +
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`Received:\n` +
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` ${printReceived(received)}\n` +
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`Constructor:\n` +
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` ${printReceived(received.constructor && received.constructor.name)}`;
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return { message, pass };
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},
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toBeLessThan(actual, expected) {
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ensureNumbers(actual, expected, '.toBeLessThan');
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const pass = actual < expected;
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const message = pass ?
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() =>
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matcherHint('.not.toBeLessThan') +
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'\n\n' +
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`Expected value not to be less than:\n` +
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` ${printExpected(expected)}\n` +
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`Received:\n` +
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` ${printReceived(actual)}` :
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() =>
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matcherHint('.toBeLessThan') +
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'\n\n' +
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`Expected value to be less than:\n` +
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` ${printExpected(expected)}\n` +
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`Received:\n` +
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` ${printReceived(actual)}`;
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return { message, pass };
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},
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toBeLessThanOrEqual(actual, expected) {
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ensureNumbers(actual, expected, '.toBeLessThanOrEqual');
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const pass = actual <= expected;
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const message = pass ?
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() =>
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matcherHint('.not.toBeLessThanOrEqual') +
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'\n\n' +
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`Expected value not to be less than or equal:\n` +
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` ${printExpected(expected)}\n` +
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`Received:\n` +
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` ${printReceived(actual)}` :
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() =>
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matcherHint('.toBeLessThanOrEqual') +
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'\n\n' +
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`Expected value to be less than or equal:\n` +
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` ${printExpected(expected)}\n` +
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`Received:\n` +
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` ${printReceived(actual)}`;
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return { message, pass };
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},
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toBeNaN(actual, expected) {
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ensureNoExpected(expected, '.toBeNaN');
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const pass = Number.isNaN(actual);
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const message = pass ?
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() =>
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matcherHint('.not.toBeNaN', 'received', '') +
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'\n\n' +
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`Expected value not to be NaN, instead received\n` +
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` ${printReceived(actual)}` :
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() =>
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matcherHint('.toBeNaN', 'received', '') +
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'\n\n' +
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`Expected value to be NaN, instead received\n` +
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` ${printReceived(actual)}`;
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return { message, pass };
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},
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toBeNull(actual, expected) {
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ensureNoExpected(expected, '.toBeNull');
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const pass = actual === null;
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const message = pass ?
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() =>
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matcherHint('.not.toBeNull', 'received', '') +
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'\n\n' +
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`Expected value not to be null, instead received\n` +
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` ${printReceived(actual)}` :
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() =>
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matcherHint('.toBeNull', 'received', '') +
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'\n\n' +
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`Expected value to be null, instead received\n` +
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` ${printReceived(actual)}`;
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return { message, pass };
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},
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toBeTruthy(actual, expected) {
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ensureNoExpected(expected, '.toBeTruthy');
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const pass = !!actual;
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const message = pass ?
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() =>
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matcherHint('.not.toBeTruthy', 'received', '') +
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'\n\n' +
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`Expected value not to be truthy, instead received\n` +
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` ${printReceived(actual)}` :
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() =>
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matcherHint('.toBeTruthy', 'received', '') +
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'\n\n' +
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`Expected value to be truthy, instead received\n` +
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` ${printReceived(actual)}`;
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return { message, pass };
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},
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toBeUndefined(actual, expected) {
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ensureNoExpected(expected, '.toBeUndefined');
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const pass = actual === void 0;
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const message = pass ?
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() =>
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matcherHint('.not.toBeUndefined', 'received', '') +
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'\n\n' +
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`Expected value not to be undefined, instead received\n` +
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` ${printReceived(actual)}` :
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() =>
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matcherHint('.toBeUndefined', 'received', '') +
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'\n\n' +
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`Expected value to be undefined, instead received\n` +
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` ${printReceived(actual)}`;
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return { message, pass };
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},
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toContain(collection, value) {
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const collectionType = getType(collection);
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let converted = null;
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if (Array.isArray(collection) || typeof collection === 'string') {
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// strings have `indexOf` so we don't need to convert
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// arrays have `indexOf` and we don't want to make a copy
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converted = collection;
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} else {
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try {
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converted = Array.from(collection);
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} catch (e) {
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throw new Error(
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matcherHint('[.not].toContainEqual', 'collection', 'value') +
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'\n\n' +
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`Expected ${RECEIVED_COLOR('collection')} to be an array-like structure.\n` +
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printWithType('Received', collection, printReceived));
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}
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}
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// At this point, we're either a string or an Array,
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// which was converted from an array-like structure.
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const pass = converted.indexOf(value) != -1;
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const message = pass ?
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() =>
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matcherHint('.not.toContain', collectionType, 'value') +
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'\n\n' +
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`Expected ${collectionType}:\n` +
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` ${printReceived(collection)}\n` +
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`Not to contain value:\n` +
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` ${printExpected(value)}\n` :
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() =>
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matcherHint('.toContain', collectionType, 'value') +
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'\n\n' +
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`Expected ${collectionType}:\n` +
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` ${printReceived(collection)}\n` +
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`To contain value:\n` +
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` ${printExpected(value)}`;
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return { message, pass };
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},
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toContainEqual(collection, value) {
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const collectionType = getType(collection);
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let converted = null;
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if (Array.isArray(collection)) {
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converted = collection;
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} else {
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try {
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converted = Array.from(collection);
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} catch (e) {
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throw new Error(
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matcherHint('[.not].toContainEqual', 'collection', 'value') +
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'\n\n' +
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`Expected ${RECEIVED_COLOR('collection')} to be an array-like structure.\n` +
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printWithType('Received', collection, printReceived));
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}
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}
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const pass =
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converted.findIndex(item => equals(item, value, [iterableEquality])) !==
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-1;
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const message = pass ?
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() =>
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matcherHint('.not.toContainEqual', collectionType, 'value') +
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'\n\n' +
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`Expected ${collectionType}:\n` +
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` ${printReceived(collection)}\n` +
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`Not to contain a value equal to:\n` +
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` ${printExpected(value)}\n` :
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() =>
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matcherHint('.toContainEqual', collectionType, 'value') +
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'\n\n' +
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`Expected ${collectionType}:\n` +
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` ${printReceived(collection)}\n` +
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`To contain a value equal to:\n` +
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` ${printExpected(value)}`;
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return { message, pass };
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},
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toEqual(received, expected) {
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const pass = equals(received, expected, [iterableEquality]);
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const message = pass ?
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() =>
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matcherHint('.not.toEqual') +
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'\n\n' +
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`Expected value to not equal:\n` +
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` ${printExpected(expected)}\n` +
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`Received:\n` +
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` ${printReceived(received)}` :
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() => {
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const diffString = diff(expected, received, {
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expand: this.expand });
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return (
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matcherHint('.toEqual') +
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'\n\n' +
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`Expected value to equal:\n` +
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` ${printExpected(expected)}\n` +
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`Received:\n` +
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` ${printReceived(received)}` + (
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diffString ? `\n\nDifference:\n\n${diffString}` : ''));
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};
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|
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// Passing the the actual and expected objects so that a custom reporter
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|
// could access them, for example in order to display a custom visual diff,
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|
// or create a different error message
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|
return { actual: received, expected, message, name: 'toEqual', pass };
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},
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toHaveLength(received, length) {
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if (
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typeof received !== 'string' && (
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!received || typeof received.length !== 'number'))
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{
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throw new Error(
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matcherHint('[.not].toHaveLength', 'received', 'length') +
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'\n\n' +
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`Expected value to have a 'length' property that is a number. ` +
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`Received:\n` +
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` ${printReceived(received)}\n` + (
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received ?
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`received.length:\n ${printReceived(received.length)}` :
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''));
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}
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const pass = received.length === length;
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const message = pass ?
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() =>
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|
matcherHint('.not.toHaveLength', 'received', 'length') +
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'\n\n' +
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`Expected value to not have length:\n` +
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` ${printExpected(length)}\n` +
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`Received:\n` +
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` ${printReceived(received)}\n` +
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`received.length:\n` +
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` ${printReceived(received.length)}` :
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() =>
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matcherHint('.toHaveLength', 'received', 'length') +
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'\n\n' +
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`Expected value to have length:\n` +
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` ${printExpected(length)}\n` +
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`Received:\n` +
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` ${printReceived(received)}\n` +
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`received.length:\n` +
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` ${printReceived(received.length)}`;
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return { message, pass };
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},
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|
toHaveProperty(object, keyPath, value) {
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|
const valuePassed = arguments.length === 3;
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|
|
if (!object && typeof object !== 'string' && typeof object !== 'number') {
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|
throw new Error(
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matcherHint('[.not].toHaveProperty', 'object', 'path', {
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secondArgument: valuePassed ? 'value' : null }) +
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'\n\n' +
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`Expected ${RECEIVED_COLOR('object')} to be an object. Received:\n` +
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` ${getType(object)}: ${printReceived(object)}`);
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}
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|
|
if (getType(keyPath) !== 'string') {
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|
throw new Error(
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|
matcherHint('[.not].toHaveProperty', 'object', 'path', {
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|
secondArgument: valuePassed ? 'value' : null }) +
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'\n\n' +
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|
`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; |