552 lines
14 KiB
JavaScript
552 lines
14 KiB
JavaScript
'use strict';
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Object.defineProperty(exports, '__esModule', {
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value: true
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});
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var _jestMessageUtil;
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function _load_jestMessageUtil() {
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return (_jestMessageUtil = require('jest-message-util'));
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}
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var _set_global;
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function _load_set_global() {
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return (_set_global = _interopRequireDefault(require('./set_global')));
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}
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function _interopRequireDefault(obj) {
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return obj && obj.__esModule ? obj : {default: obj};
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}
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/**
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* We don't know the type of arguments for a callback ahead of time which is why
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* we are disabling the flowtype/no-weak-types rule here.
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*/
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/* eslint-disable flowtype/no-weak-types */
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/* eslint-enable flowtype/no-weak-types */
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const MS_IN_A_YEAR = 31536000000;
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/**
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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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class FakeTimers {
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constructor(_ref) {
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let global = _ref.global,
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moduleMocker = _ref.moduleMocker,
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timerConfig = _ref.timerConfig,
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config = _ref.config,
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maxLoops = _ref.maxLoops;
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this._global = global;
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this._timerConfig = timerConfig;
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this._config = config;
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this._maxLoops = maxLoops || 100000;
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this._uuidCounter = 1;
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this._moduleMocker = moduleMocker;
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// Store original timer APIs for future reference
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this._timerAPIs = {
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clearImmediate: global.clearImmediate,
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clearInterval: global.clearInterval,
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clearTimeout: global.clearTimeout,
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nextTick: global.process && global.process.nextTick,
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setImmediate: global.setImmediate,
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setInterval: global.setInterval,
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setTimeout: global.setTimeout
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};
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this.reset();
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this._createMocks();
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// These globally-accessible function are now deprecated!
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// They will go away very soon, so do not use them!
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// Instead, use the versions available on the `jest` object
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global.mockRunTicksRepeatedly = this.runAllTicks.bind(this);
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global.mockRunTimersOnce = this.runOnlyPendingTimers.bind(this);
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global.mockAdvanceTimersByTime = this.advanceTimersByTime.bind(this);
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global.mockRunTimersRepeatedly = this.runAllTimers.bind(this);
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global.mockClearTimers = this.clearAllTimers.bind(this);
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global.mockGetTimersCount = () => Object.keys(this._timers).length;
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}
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clearAllTimers() {
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this._immediates.forEach(immediate =>
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this._fakeClearImmediate(immediate.uuid)
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);
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for (const uuid in this._timers) {
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delete this._timers[uuid];
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}
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}
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dispose() {
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this._disposed = true;
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this.clearAllTimers();
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}
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reset() {
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this._cancelledTicks = {};
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this._cancelledImmediates = {};
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this._now = 0;
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this._ticks = [];
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this._immediates = [];
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this._timers = {};
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}
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runAllTicks() {
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this._checkFakeTimers();
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// Only run a generous number of ticks and then bail.
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// This is just to help avoid recursive loops
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let i;
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for (i = 0; i < this._maxLoops; i++) {
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const tick = this._ticks.shift();
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if (tick === undefined) {
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break;
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}
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if (!this._cancelledTicks.hasOwnProperty(tick.uuid)) {
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// Callback may throw, so update the map prior calling.
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this._cancelledTicks[tick.uuid] = true;
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tick.callback();
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}
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}
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if (i === this._maxLoops) {
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throw new Error(
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'Ran ' +
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this._maxLoops +
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' ticks, and there are still more! ' +
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"Assuming we've hit an infinite recursion and bailing out..."
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);
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}
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}
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runAllImmediates() {
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this._checkFakeTimers();
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// Only run a generous number of immediates and then bail.
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let i;
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for (i = 0; i < this._maxLoops; i++) {
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const immediate = this._immediates.shift();
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if (immediate === undefined) {
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break;
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}
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this._runImmediate(immediate);
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}
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if (i === this._maxLoops) {
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throw new Error(
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'Ran ' +
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this._maxLoops +
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' immediates, and there are still more! Assuming ' +
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"we've hit an infinite recursion and bailing out..."
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);
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}
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}
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_runImmediate(immediate) {
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if (!this._cancelledImmediates.hasOwnProperty(immediate.uuid)) {
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// Callback may throw, so update the map prior calling.
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this._cancelledImmediates[immediate.uuid] = true;
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immediate.callback();
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}
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}
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runAllTimers() {
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this._checkFakeTimers();
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this.runAllTicks();
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this.runAllImmediates();
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// Only run a generous number of timers and then bail.
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// This is just to help avoid recursive loops
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let i;
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for (i = 0; i < this._maxLoops; i++) {
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const nextTimerHandle = this._getNextTimerHandle();
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// If there are no more timer handles, stop!
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if (nextTimerHandle === null) {
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break;
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}
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this._runTimerHandle(nextTimerHandle);
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// Some of the immediate calls could be enqueued
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// during the previous handling of the timers, we should
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// run them as well.
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if (this._immediates.length) {
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this.runAllImmediates();
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}
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if (this._ticks.length) {
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this.runAllTicks();
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}
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}
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if (i === this._maxLoops) {
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throw new Error(
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'Ran ' +
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this._maxLoops +
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' timers, and there are still more! ' +
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"Assuming we've hit an infinite recursion and bailing out..."
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);
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}
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}
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runOnlyPendingTimers() {
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const timers = Object.assign({}, this._timers);
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this._checkFakeTimers();
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this._immediates.forEach(this._runImmediate, this);
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Object.keys(timers)
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.sort((left, right) => timers[left].expiry - timers[right].expiry)
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.forEach(this._runTimerHandle, this);
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}
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advanceTimersByTime(msToRun) {
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this._checkFakeTimers();
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// Only run a generous number of timers and then bail.
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// This is just to help avoid recursive loops
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let i;
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for (i = 0; i < this._maxLoops; i++) {
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const timerHandle = this._getNextTimerHandle();
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// If there are no more timer handles, stop!
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if (timerHandle === null) {
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break;
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}
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const nextTimerExpiry = this._timers[timerHandle].expiry;
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if (this._now + msToRun < nextTimerExpiry) {
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// There are no timers between now and the target we're running to, so
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// adjust our time cursor and quit
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this._now += msToRun;
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break;
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} else {
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msToRun -= nextTimerExpiry - this._now;
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this._now = nextTimerExpiry;
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this._runTimerHandle(timerHandle);
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}
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}
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if (i === this._maxLoops) {
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throw new Error(
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'Ran ' +
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this._maxLoops +
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' timers, and there are still more! ' +
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"Assuming we've hit an infinite recursion and bailing out..."
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);
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}
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}
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runWithRealTimers(cb) {
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const prevClearImmediate = this._global.clearImmediate;
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const prevClearInterval = this._global.clearInterval;
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const prevClearTimeout = this._global.clearTimeout;
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const prevNextTick = this._global.process.nextTick;
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const prevSetImmediate = this._global.setImmediate;
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const prevSetInterval = this._global.setInterval;
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const prevSetTimeout = this._global.setTimeout;
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this.useRealTimers();
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let cbErr = null;
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let errThrown = false;
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try {
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cb();
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} catch (e) {
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errThrown = true;
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cbErr = e;
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}
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this._global.clearImmediate = prevClearImmediate;
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this._global.clearInterval = prevClearInterval;
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this._global.clearTimeout = prevClearTimeout;
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this._global.process.nextTick = prevNextTick;
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this._global.setImmediate = prevSetImmediate;
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this._global.setInterval = prevSetInterval;
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this._global.setTimeout = prevSetTimeout;
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if (errThrown) {
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throw cbErr;
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}
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}
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useRealTimers() {
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const global = this._global;
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(0, (_set_global || _load_set_global()).default)(
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global,
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'clearImmediate',
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this._timerAPIs.clearImmediate
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);
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(0, (_set_global || _load_set_global()).default)(
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global,
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'clearInterval',
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this._timerAPIs.clearInterval
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);
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(0, (_set_global || _load_set_global()).default)(
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global,
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'clearTimeout',
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this._timerAPIs.clearTimeout
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);
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(0, (_set_global || _load_set_global()).default)(
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global,
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'setImmediate',
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this._timerAPIs.setImmediate
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);
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(0, (_set_global || _load_set_global()).default)(
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global,
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'setInterval',
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this._timerAPIs.setInterval
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);
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(0, (_set_global || _load_set_global()).default)(
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global,
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'setTimeout',
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this._timerAPIs.setTimeout
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);
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global.process.nextTick = this._timerAPIs.nextTick;
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}
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useFakeTimers() {
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this._createMocks();
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const global = this._global;
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(0, (_set_global || _load_set_global()).default)(
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global,
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'clearImmediate',
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this._fakeTimerAPIs.clearImmediate
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);
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(0, (_set_global || _load_set_global()).default)(
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global,
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'clearInterval',
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this._fakeTimerAPIs.clearInterval
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);
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(0, (_set_global || _load_set_global()).default)(
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global,
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'clearTimeout',
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this._fakeTimerAPIs.clearTimeout
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);
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(0, (_set_global || _load_set_global()).default)(
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global,
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'setImmediate',
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this._fakeTimerAPIs.setImmediate
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);
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(0, (_set_global || _load_set_global()).default)(
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global,
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'setInterval',
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this._fakeTimerAPIs.setInterval
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);
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(0, (_set_global || _load_set_global()).default)(
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global,
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'setTimeout',
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this._fakeTimerAPIs.setTimeout
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);
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global.process.nextTick = this._fakeTimerAPIs.nextTick;
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}
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_checkFakeTimers() {
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if (this._global.setTimeout !== this._fakeTimerAPIs.setTimeout) {
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this._global.console.warn(
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`A function to advance timers was called but the timers API is not ` +
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`mocked with fake timers. Call \`jest.useFakeTimers()\` in this ` +
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`test or enable fake timers globally by setting ` +
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`\`"timers": "fake"\` in ` +
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`the configuration file. This warning is likely a result of a ` +
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`default configuration change in Jest 15.\n\n` +
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`Release Blog Post: https://jestjs.io/blog/2016/09/01/jest-15.html\n` +
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`Stack Trace:\n` +
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(0, (_jestMessageUtil || _load_jestMessageUtil()).formatStackTrace)(
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new Error().stack,
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this._config,
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{
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noStackTrace: false
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}
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)
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);
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}
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}
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_createMocks() {
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const fn = impl => this._moduleMocker.fn().mockImplementation(impl);
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this._fakeTimerAPIs = {
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clearImmediate: fn(this._fakeClearImmediate.bind(this)),
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clearInterval: fn(this._fakeClearTimer.bind(this)),
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clearTimeout: fn(this._fakeClearTimer.bind(this)),
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nextTick: fn(this._fakeNextTick.bind(this)),
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setImmediate: fn(this._fakeSetImmediate.bind(this)),
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setInterval: fn(this._fakeSetInterval.bind(this)),
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setTimeout: fn(this._fakeSetTimeout.bind(this))
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};
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}
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_fakeClearTimer(timerRef) {
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const uuid = this._timerConfig.refToId(timerRef);
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if (uuid && this._timers.hasOwnProperty(uuid)) {
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delete this._timers[String(uuid)];
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}
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}
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_fakeClearImmediate(uuid) {
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this._cancelledImmediates[uuid] = true;
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}
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_fakeNextTick(callback) {
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if (this._disposed) {
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return;
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}
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const args = [];
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for (let ii = 1, ll = arguments.length; ii < ll; ii++) {
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args.push(arguments[ii]);
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}
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const uuid = String(this._uuidCounter++);
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this._ticks.push({
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callback: () => callback.apply(null, args),
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uuid: uuid
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});
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const cancelledTicks = this._cancelledTicks;
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this._timerAPIs.nextTick(() => {
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if (!cancelledTicks.hasOwnProperty(uuid)) {
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// Callback may throw, so update the map prior calling.
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cancelledTicks[uuid] = true;
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callback.apply(null, args);
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}
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});
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}
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_fakeSetImmediate(callback) {
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if (this._disposed) {
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return null;
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}
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const args = [];
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for (let ii = 1, ll = arguments.length; ii < ll; ii++) {
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args.push(arguments[ii]);
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}
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const uuid = this._uuidCounter++;
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this._immediates.push({
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callback: () => callback.apply(null, args),
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uuid: String(uuid)
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});
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const cancelledImmediates = this._cancelledImmediates;
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this._timerAPIs.setImmediate(() => {
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if (!cancelledImmediates.hasOwnProperty(uuid)) {
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// Callback may throw, so update the map prior calling.
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cancelledImmediates[String(uuid)] = true;
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callback.apply(null, args);
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}
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});
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return uuid;
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}
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_fakeSetInterval(callback, intervalDelay) {
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if (this._disposed) {
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return null;
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}
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if (intervalDelay == null) {
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intervalDelay = 0;
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}
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const args = [];
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for (let ii = 2, ll = arguments.length; ii < ll; ii++) {
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args.push(arguments[ii]);
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}
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const uuid = this._uuidCounter++;
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this._timers[String(uuid)] = {
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callback: () => callback.apply(null, args),
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expiry: this._now + intervalDelay,
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interval: intervalDelay,
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type: 'interval'
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};
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return this._timerConfig.idToRef(uuid);
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}
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_fakeSetTimeout(callback, delay) {
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if (this._disposed) {
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return null;
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}
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// eslint-disable-next-line no-bitwise
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delay = Number(delay) | 0;
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const args = [];
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for (let ii = 2, ll = arguments.length; ii < ll; ii++) {
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args.push(arguments[ii]);
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}
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const uuid = this._uuidCounter++;
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this._timers[String(uuid)] = {
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callback: () => callback.apply(null, args),
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expiry: this._now + delay,
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interval: null,
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type: 'timeout'
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};
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return this._timerConfig.idToRef(uuid);
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}
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_getNextTimerHandle() {
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let nextTimerHandle = null;
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let uuid;
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let soonestTime = MS_IN_A_YEAR;
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let timer;
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for (uuid in this._timers) {
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timer = this._timers[uuid];
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if (timer.expiry < soonestTime) {
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soonestTime = timer.expiry;
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nextTimerHandle = uuid;
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}
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}
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return nextTimerHandle;
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}
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_runTimerHandle(timerHandle) {
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const timer = this._timers[timerHandle];
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if (!timer) {
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return;
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}
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switch (timer.type) {
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case 'timeout':
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const callback = timer.callback;
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delete this._timers[timerHandle];
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callback();
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break;
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case 'interval':
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timer.expiry = this._now + timer.interval;
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timer.callback();
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break;
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default:
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throw new Error('Unexpected timer type: ' + timer.type);
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}
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}
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}
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exports.default = FakeTimers;
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