217 lines
9.1 KiB
JavaScript
217 lines
9.1 KiB
JavaScript
'use strict';
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var _jestMatcherUtils = require('jest-matcher-utils');
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var utils = _interopRequireWildcard(_jestMatcherUtils);
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var _matchers = require('./matchers');
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var _matchers2 = _interopRequireDefault(_matchers);
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var _spy_matchers = require('./spy_matchers');
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var _spy_matchers2 = _interopRequireDefault(_spy_matchers);
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var _to_throw_matchers = require('./to_throw_matchers');
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var _to_throw_matchers2 = _interopRequireDefault(_to_throw_matchers);
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var _jasmine_utils = require('./jasmine_utils');
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var _asymmetric_matchers = require('./asymmetric_matchers');
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var _jest_matchers_object = require('./jest_matchers_object');
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var _extract_expected_assertions_errors = require('./extract_expected_assertions_errors');
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var _extract_expected_assertions_errors2 = _interopRequireDefault(_extract_expected_assertions_errors);
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function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
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function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj.default = obj; return newObj; } }
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class JestAssertionError extends Error {} /**
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* Copyright (c) 2014-present, Facebook, Inc. All rights reserved.
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*
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* This source code is licensed under the MIT license found in the
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* LICENSE file in the root directory of this source tree.
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*
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*
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*/
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const isPromise = obj => {
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return !!obj && (typeof obj === 'object' || typeof obj === 'function') && typeof obj.then === 'function';
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};
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const createToThrowErrorMatchingSnapshotMatcher = function (matcher) {
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return function (received, testName) {
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return matcher.apply(this, [received, testName, true]);
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};
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};
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const getPromiseMatcher = (name, matcher) => {
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if (name === 'toThrow' || name === 'toThrowError') {
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return (0, _to_throw_matchers.createMatcher)('.' + name, true);
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} else if (name === 'toThrowErrorMatchingSnapshot') {
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return createToThrowErrorMatchingSnapshotMatcher(matcher);
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}
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return null;
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};
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const expect = function (actual) {
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if ((arguments.length <= 1 ? 0 : arguments.length - 1) !== 0) {
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throw new Error('Expect takes at most one argument.');
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}
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const allMatchers = (0, _jest_matchers_object.getMatchers)();
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const expectation = {
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not: {},
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rejects: { not: {} },
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resolves: { not: {} }
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};
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Object.keys(allMatchers).forEach(name => {
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const matcher = allMatchers[name];
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const promiseMatcher = getPromiseMatcher(name, matcher) || matcher;
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expectation[name] = makeThrowingMatcher(matcher, false, actual);
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expectation.not[name] = makeThrowingMatcher(matcher, true, actual);
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expectation.resolves[name] = makeResolveMatcher(name, promiseMatcher, false, actual);
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expectation.resolves.not[name] = makeResolveMatcher(name, promiseMatcher, true, actual);
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expectation.rejects[name] = makeRejectMatcher(name, promiseMatcher, false, actual);
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expectation.rejects.not[name] = makeRejectMatcher(name, matcher, true, actual);
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});
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return expectation;
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};
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const getMessage = message => {
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return message && message() || utils.RECEIVED_COLOR('No message was specified for this matcher.');
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};
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const makeResolveMatcher = (matcherName, matcher, isNot, actual) => function () {
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for (var _len = arguments.length, args = Array(_len), _key = 0; _key < _len; _key++) {
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args[_key] = arguments[_key];
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}
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const matcherStatement = `.resolves.${isNot ? 'not.' : ''}${matcherName}`;
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if (!isPromise(actual)) {
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throw new JestAssertionError(utils.matcherHint(matcherStatement, 'received', '') + '\n\n' + `${utils.RECEIVED_COLOR('received')} value must be a Promise.\n` + utils.printWithType('Received', actual, utils.printReceived));
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}
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return actual.then(result => makeThrowingMatcher(matcher, isNot, result).apply(null, args), reason => {
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const err = new JestAssertionError(utils.matcherHint(matcherStatement, 'received', '') + '\n\n' + `Expected ${utils.RECEIVED_COLOR('received')} Promise to resolve, ` + 'instead it rejected to value\n' + ` ${utils.printReceived(reason)}`);
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return Promise.reject(err);
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});
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};
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const makeRejectMatcher = (matcherName, matcher, isNot, actual) => function () {
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for (var _len2 = arguments.length, args = Array(_len2), _key2 = 0; _key2 < _len2; _key2++) {
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args[_key2] = arguments[_key2];
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}
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const matcherStatement = `.rejects.${isNot ? 'not.' : ''}${matcherName}`;
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if (!isPromise(actual)) {
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throw new JestAssertionError(utils.matcherHint(matcherStatement, 'received', '') + '\n\n' + `${utils.RECEIVED_COLOR('received')} value must be a Promise.\n` + utils.printWithType('Received', actual, utils.printReceived));
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}
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return actual.then(result => {
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const err = new JestAssertionError(utils.matcherHint(matcherStatement, 'received', '') + '\n\n' + `Expected ${utils.RECEIVED_COLOR('received')} Promise to reject, ` + 'instead it resolved to value\n' + ` ${utils.printReceived(result)}`);
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return Promise.reject(err);
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}, reason => makeThrowingMatcher(matcher, isNot, reason).apply(null, args));
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};
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const makeThrowingMatcher = (matcher, isNot, actual) => {
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return function throwingMatcher() {
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let throws = true;
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const matcherContext = Object.assign(
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// When throws is disabled, the matcher will not throw errors during test
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// execution but instead add them to the global matcher state. If a
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// matcher throws, test execution is normally stopped immediately. The
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// snapshot matcher uses it because we want to log all snapshot
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// failures in a test.
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{ dontThrow: () => throws = false }, (0, _jest_matchers_object.getState)(), {
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equals: _jasmine_utils.equals,
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isNot,
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utils
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});
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let result;
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try {
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for (var _len3 = arguments.length, args = Array(_len3), _key3 = 0; _key3 < _len3; _key3++) {
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args[_key3] = arguments[_key3];
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}
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result = matcher.apply(matcherContext, [actual].concat(args));
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} catch (error) {
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if (matcher[_jest_matchers_object.INTERNAL_MATCHER_FLAG] === true && !(error instanceof JestAssertionError) && error.name !== 'PrettyFormatPluginError' &&
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// Guard for some environments (browsers) that do not support this feature.
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Error.captureStackTrace) {
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// Try to remove this and deeper functions from the stack trace frame.
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Error.captureStackTrace(error, throwingMatcher);
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}
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throw error;
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}
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_validateResult(result);
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(0, _jest_matchers_object.getState)().assertionCalls++;
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if (result.pass && isNot || !result.pass && !isNot) {
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// XOR
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const message = getMessage(result.message);
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const error = new JestAssertionError(message);
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// Passing the result of the matcher with the error so that a custom
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// reporter could access the actual and expected objects of the result
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// for example in order to display a custom visual diff
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error.matcherResult = result;
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// Try to remove this function from the stack trace frame.
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// Guard for some environments (browsers) that do not support this feature.
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if (Error.captureStackTrace) {
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Error.captureStackTrace(error, throwingMatcher);
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}
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if (throws) {
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throw error;
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} else {
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(0, _jest_matchers_object.getState)().suppressedErrors.push(error);
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}
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}
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};
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};
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expect.extend = matchers => (0, _jest_matchers_object.setMatchers)(matchers, false);
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expect.anything = _asymmetric_matchers.anything;
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expect.any = _asymmetric_matchers.any;
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expect.objectContaining = _asymmetric_matchers.objectContaining;
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expect.arrayContaining = _asymmetric_matchers.arrayContaining;
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expect.stringContaining = _asymmetric_matchers.stringContaining;
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expect.stringMatching = _asymmetric_matchers.stringMatching;
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const _validateResult = result => {
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if (typeof result !== 'object' || typeof result.pass !== 'boolean' || result.message && typeof result.message !== 'string' && typeof result.message !== 'function') {
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throw new Error('Unexpected return from a matcher function.\n' + 'Matcher functions should ' + 'return an object in the following format:\n' + ' {message?: string | function, pass: boolean}\n' + `'${utils.stringify(result)}' was returned`);
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}
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};
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// add default jest matchers
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(0, _jest_matchers_object.setMatchers)(_matchers2.default, true);
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(0, _jest_matchers_object.setMatchers)(_spy_matchers2.default, true);
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(0, _jest_matchers_object.setMatchers)(_to_throw_matchers2.default, true);
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expect.addSnapshotSerializer = () => void 0;
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expect.assertions = expected => {
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(0, _jest_matchers_object.getState)().expectedAssertionsNumber = expected;
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};
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expect.hasAssertions = expected => {
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utils.ensureNoExpected(expected, '.hasAssertions');
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(0, _jest_matchers_object.getState)().isExpectingAssertions = true;
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};
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expect.getState = _jest_matchers_object.getState;
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expect.setState = _jest_matchers_object.setState;
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expect.extractExpectedAssertionsErrors = _extract_expected_assertions_errors2.default;
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module.exports = expect; |