data-provider-temporary
Version:
Library that helps with server-to-client synchronization of data
515 lines (374 loc) • 16.6 kB
JavaScript
'use strict';var _keys = require('babel-runtime/core-js/object/keys');var _keys2 = _interopRequireDefault(_keys);var _classCallCheck2 = require('babel-runtime/helpers/classCallCheck');var _classCallCheck3 = _interopRequireDefault(_classCallCheck2);var _createClass2 = require('babel-runtime/helpers/createClass');var _createClass3 = _interopRequireDefault(_createClass2);function _interopRequireDefault(obj) {return obj && obj.__esModule ? obj : { default: obj };}var _require =
require('jest-message-util'),formatStackTrace = _require.formatStackTrace; /**
* Copyright (c) 2014-present, Facebook, Inc. All rights reserved.
*
* This source code is licensed under the BSD-style license found in the
* LICENSE file in the root directory of this source tree. An additional grant
* of patent rights can be found in the PATENTS file in the same directory.
*
*
*/var setGlobal = require('./setGlobal');
var MS_IN_A_YEAR = 31536000000;var
FakeTimers = function () {
function FakeTimers(
global,
moduleMocker,
config,
maxLoops)
{var _this = this;(0, _classCallCheck3.default)(this, FakeTimers);
this._global = global;
this._config = config;
this._maxLoops = maxLoops || 100000;
this._uuidCounter = 1;
this._moduleMocker = moduleMocker;
// Store original timer APIs for future reference
this._timerAPIs = {
clearImmediate: global.clearImmediate,
clearInterval: global.clearInterval,
clearTimeout: global.clearTimeout,
nextTick: global.process && global.process.nextTick,
setImmediate: global.setImmediate,
setInterval: global.setInterval,
setTimeout: global.setTimeout };
this.reset();
this._createMocks();
// These globally-accessible function are now deprecated!
// They will go away very soon, so do not use them!
// Instead, use the versions available on the `jest` object
global.mockRunTicksRepeatedly = this.runAllTicks.bind(this);
global.mockRunTimersOnce = this.runOnlyPendingTimers.bind(this);
global.mockRunTimersToTime = this.runTimersToTime.bind(this);
global.mockRunTimersRepeatedly = this.runAllTimers.bind(this);
global.mockClearTimers = this.clearAllTimers.bind(this);
global.mockGetTimersCount = function () {return (0, _keys2.default)(_this._timers).length;};
}(0, _createClass3.default)(FakeTimers, [{ key: 'clearAllTimers', value: function clearAllTimers()
{var _this2 = this;
this._immediates.forEach(function (immediate) {return (
_this2._fakeClearImmediate(immediate.uuid));});
for (var _uuid in this._timers) {
delete this._timers[_uuid];
}
} }, { key: 'dispose', value: function dispose()
{
this._disposed = true;
this.clearAllTimers();
} }, { key: 'reset', value: function reset()
{
this._cancelledTicks = {};
this._cancelledImmediates = {};
this._now = 0;
this._ticks = [];
this._immediates = [];
this._timers = {};
} }, { key: 'runAllTicks', value: function runAllTicks()
{
this._checkFakeTimers();
// Only run a generous number of ticks and then bail.
// This is just to help avoid recursive loops
var i = void 0;
for (i = 0; i < this._maxLoops; i++) {
var tick = this._ticks.shift();
if (tick === undefined) {
break;
}
if (!this._cancelledTicks.hasOwnProperty(tick.uuid)) {
// Callback may throw, so update the map prior calling.
this._cancelledTicks[tick.uuid] = true;
tick.callback();
}
}
if (i === this._maxLoops) {
throw new Error(
'Ran ' +
this._maxLoops +
' ticks, and there are still more! ' +
"Assuming we've hit an infinite recursion and bailing out...");
}
} }, { key: 'runAllImmediates', value: function runAllImmediates()
{
this._checkFakeTimers();
// Only run a generous number of immediates and then bail.
var i = void 0;
for (i = 0; i < this._maxLoops; i++) {
var immediate = this._immediates.shift();
if (immediate === undefined) {
break;
}
this._runImmediate(immediate);
}
if (i === this._maxLoops) {
throw new Error(
'Ran ' +
this._maxLoops +
' immediates, and there are still more! Assuming ' +
"we've hit an infinite recursion and bailing out...");
}
} }, { key: '_runImmediate', value: function _runImmediate(
immediate) {
if (!this._cancelledImmediates.hasOwnProperty(immediate.uuid)) {
// Callback may throw, so update the map prior calling.
this._cancelledImmediates[immediate.uuid] = true;
immediate.callback();
}
} }, { key: 'runAllTimers', value: function runAllTimers()
{
this._checkFakeTimers();
this.runAllTicks();
this.runAllImmediates();
// Only run a generous number of timers and then bail.
// This is just to help avoid recursive loops
var i = void 0;
for (i = 0; i < this._maxLoops; i++) {
var nextTimerHandle = this._getNextTimerHandle();
// If there are no more timer handles, stop!
if (nextTimerHandle === null) {
break;
}
this._runTimerHandle(nextTimerHandle);
// Some of the immediate calls could be enqueued
// during the previous handling of the timers, we should
// run them as well.
if (this._immediates.length) {
this.runAllImmediates();
}
}
if (i === this._maxLoops) {
throw new Error(
'Ran ' +
this._maxLoops +
' timers, and there are still more! ' +
"Assuming we've hit an infinite recursion and bailing out...");
}
} }, { key: 'runOnlyPendingTimers', value: function runOnlyPendingTimers()
{
this._checkFakeTimers();
this._immediates.forEach(this._runImmediate, this);
var timers = this._timers;
(0, _keys2.default)(timers).
sort(function (left, right) {return timers[left].expiry - timers[right].expiry;}).
forEach(this._runTimerHandle, this);
} }, { key: 'runTimersToTime', value: function runTimersToTime(
msToRun) {
this._checkFakeTimers();
// Only run a generous number of timers and then bail.
// This is jsut to help avoid recursive loops
var i = void 0;
for (i = 0; i < this._maxLoops; i++) {
var timerHandle = this._getNextTimerHandle();
// If there are no more timer handles, stop!
if (timerHandle === null) {
break;
}
var nextTimerExpiry = this._timers[timerHandle].expiry;
if (this._now + msToRun < nextTimerExpiry) {
// There are no timers between now and the target we're running to, so
// adjust our time cursor and quit
this._now += msToRun;
break;
} else {
msToRun -= nextTimerExpiry - this._now;
this._now = nextTimerExpiry;
this._runTimerHandle(timerHandle);
}
}
if (i === this._maxLoops) {
throw new Error(
'Ran ' +
this._maxLoops +
' timers, and there are still more! ' +
"Assuming we've hit an infinite recursion and bailing out...");
}
} }, { key: 'runWithRealTimers', value: function runWithRealTimers(
cb) {
var prevClearImmediate = this._global.clearImmediate;
var prevClearInterval = this._global.clearInterval;
var prevClearTimeout = this._global.clearTimeout;
var prevNextTick = this._global.process.nextTick;
var prevSetImmediate = this._global.setImmediate;
var prevSetInterval = this._global.setInterval;
var prevSetTimeout = this._global.setTimeout;
this.useRealTimers();
var cbErr = null;
var errThrown = false;
try {
cb();
} catch (e) {
errThrown = true;
cbErr = e;
}
this._global.clearImmediate = prevClearImmediate;
this._global.clearInterval = prevClearInterval;
this._global.clearTimeout = prevClearTimeout;
this._global.process.nextTick = prevNextTick;
this._global.setImmediate = prevSetImmediate;
this._global.setInterval = prevSetInterval;
this._global.setTimeout = prevSetTimeout;
if (errThrown) {
throw cbErr;
}
} }, { key: 'useRealTimers', value: function useRealTimers()
{
var global = this._global;
setGlobal(global, 'clearImmediate', this._timerAPIs.clearImmediate);
setGlobal(global, 'clearInterval', this._timerAPIs.clearInterval);
setGlobal(global, 'clearTimeout', this._timerAPIs.clearTimeout);
setGlobal(global, 'setImmediate', this._timerAPIs.setImmediate);
setGlobal(global, 'setInterval', this._timerAPIs.setInterval);
setGlobal(global, 'setTimeout', this._timerAPIs.setTimeout);
global.process.nextTick = this._timerAPIs.nextTick;
} }, { key: 'useFakeTimers', value: function useFakeTimers()
{
this._createMocks();
var global = this._global;
setGlobal(global, 'clearImmediate', this._fakeTimerAPIs.clearImmediate);
setGlobal(global, 'clearInterval', this._fakeTimerAPIs.clearInterval);
setGlobal(global, 'clearTimeout', this._fakeTimerAPIs.clearTimeout);
setGlobal(global, 'setImmediate', this._fakeTimerAPIs.setImmediate);
setGlobal(global, 'setInterval', this._fakeTimerAPIs.setInterval);
setGlobal(global, 'setTimeout', this._fakeTimerAPIs.setTimeout);
global.process.nextTick = this._fakeTimerAPIs.nextTick;
} }, { key: '_checkFakeTimers', value: function _checkFakeTimers()
{
if (this._global.setTimeout !== this._fakeTimerAPIs.setTimeout) {
this._global.console.warn(
'A function to advance timers was called but the timers API is not ' + 'mocked with fake timers. Call `jest.useFakeTimers()` in this ' + 'test or enable fake timers globally by setting ' + '`"timers": "fake"` in ' + 'the configuration file. This warning is likely a result of a ' + 'default configuration change in Jest 15.\n\n' + 'Release Blog Post: https://facebook.github.io/jest/blog/2016/09/01/jest-15.html\n' + 'Stack Trace:\n' +
formatStackTrace(new Error().stack, this._config, {
noStackTrace: false }));
}
} }, { key: '_createMocks', value: function _createMocks()
{var _this3 = this;
var fn = function fn(impl) {return _this3._moduleMocker.fn().mockImplementation(impl);};
this._fakeTimerAPIs = {
clearImmediate: fn(this._fakeClearImmediate.bind(this)),
clearInterval: fn(this._fakeClearTimer.bind(this)),
clearTimeout: fn(this._fakeClearTimer.bind(this)),
nextTick: fn(this._fakeNextTick.bind(this)),
setImmediate: fn(this._fakeSetImmediate.bind(this)),
setInterval: fn(this._fakeSetInterval.bind(this)),
setTimeout: fn(this._fakeSetTimeout.bind(this)) };
} }, { key: '_fakeClearTimer', value: function _fakeClearTimer(
uuid) {
if (this._timers.hasOwnProperty(uuid)) {
delete this._timers[uuid];
}
} }, { key: '_fakeClearImmediate', value: function _fakeClearImmediate(
uuid) {
this._cancelledImmediates[uuid] = true;
} }, { key: '_fakeNextTick', value: function _fakeNextTick(
callback) {var _this4 = this;
if (this._disposed) {
return;
}
var args = [];
for (var ii = 1, ll = arguments.length; ii < ll; ii++) {
args.push(arguments[ii]);
}
var uuid = String(this._uuidCounter++);
this._ticks.push({
callback: function (_callback) {function callback() {return _callback.apply(this, arguments);}callback.toString = function () {return _callback.toString();};return callback;}(function () {return callback.apply(null, args);}),
uuid: uuid });
var cancelledTicks = this._cancelledTicks;
this._timerAPIs.nextTick(function () {
if (_this4._blocked) {
return;
}
if (!cancelledTicks.hasOwnProperty(uuid)) {
// Callback may throw, so update the map prior calling.
cancelledTicks[uuid] = true;
callback.apply(null, args);
}
});
} }, { key: '_fakeSetImmediate', value: function _fakeSetImmediate(
callback) {
if (this._disposed) {
return null;
}
var args = [];
for (var ii = 1, ll = arguments.length; ii < ll; ii++) {
args.push(arguments[ii]);
}
var uuid = this._uuidCounter++;
this._immediates.push({
callback: function (_callback2) {function callback() {return _callback2.apply(this, arguments);}callback.toString = function () {return _callback2.toString();};return callback;}(function () {return callback.apply(null, args);}),
uuid: String(uuid) });
var cancelledImmediates = this._cancelledImmediates;
this._timerAPIs.setImmediate(function () {
if (!cancelledImmediates.hasOwnProperty(uuid)) {
// Callback may throw, so update the map prior calling.
cancelledImmediates[String(uuid)] = true;
callback.apply(null, args);
}
});
return uuid;
} }, { key: '_fakeSetInterval', value: function _fakeSetInterval(
callback, intervalDelay) {
if (this._disposed) {
return null;
}
if (intervalDelay == null) {
intervalDelay = 0;
}
var args = [];
for (var ii = 2, ll = arguments.length; ii < ll; ii++) {
args.push(arguments[ii]);
}
var uuid = this._uuidCounter++;
this._timers[String(uuid)] = {
callback: function (_callback3) {function callback() {return _callback3.apply(this, arguments);}callback.toString = function () {return _callback3.toString();};return callback;}(function () {return callback.apply(null, args);}),
expiry: this._now + intervalDelay,
interval: intervalDelay,
type: 'interval' };
return uuid;
} }, { key: '_fakeSetTimeout', value: function _fakeSetTimeout(
callback, delay) {
if (this._disposed) {
return null;
}
if (delay == null) {
delay = 0;
}
var args = [];
for (var ii = 2, ll = arguments.length; ii < ll; ii++) {
args.push(arguments[ii]);
}
var uuid = this._uuidCounter++;
this._timers[String(uuid)] = {
callback: function (_callback4) {function callback() {return _callback4.apply(this, arguments);}callback.toString = function () {return _callback4.toString();};return callback;}(function () {return callback.apply(null, args);}),
expiry: this._now + delay,
interval: null,
type: 'timeout' };
return uuid;
} }, { key: '_getNextTimerHandle', value: function _getNextTimerHandle()
{
var nextTimerHandle = null;
var uuid = void 0;
var soonestTime = MS_IN_A_YEAR;
var timer = void 0;
for (uuid in this._timers) {
timer = this._timers[uuid];
if (timer.expiry < soonestTime) {
soonestTime = timer.expiry;
nextTimerHandle = uuid;
}
}
return nextTimerHandle;
} }, { key: '_runTimerHandle', value: function _runTimerHandle(
timerHandle) {
var timer = this._timers[timerHandle];
if (!timer) {
return;
}
switch (timer.type) {
case 'timeout':
var _callback5 = timer.callback;
delete this._timers[timerHandle];
_callback5();
break;
case 'interval':
timer.expiry = this._now + timer.interval;
timer.callback();
break;
default:
throw new Error('Unexpected timer type: ' + timer.type);}
} }]);return FakeTimers;}();
module.exports = FakeTimers;