mirror of
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421 lines
12 KiB
JavaScript
421 lines
12 KiB
JavaScript
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/*
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Copyright (c) 2008-2015 Pivotal Labs
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Permission is hereby granted, free of charge, to any person obtaining
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a copy of this software and associated documentation files (the
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"Software"), to deal in the Software without restriction, including
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without limitation the rights to use, copy, modify, merge, publish,
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distribute, sublicense, and/or sell copies of the Software, and to
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permit persons to whom the Software is furnished to do so, subject to
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the following conditions:
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The above copyright notice and this permission notice shall be
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included in all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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/* This is jasmine's implementation of a mock clock, lifted from the depths of
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* jasmine-core and exposed as a standalone module. The interface is just the
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* same as that of jasmine.clock. For example:
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*
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* var mock_clock = require("mock-clock").clock();
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* mock_clock.install();
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* setTimeout(function() {
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* timerCallback();
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* }, 100);
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*
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* expect(timerCallback).not.toHaveBeenCalled();
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* mock_clock.tick(101);
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* expect(timerCallback).toHaveBeenCalled();
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*
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* mock_clock.uninstall();
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*
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*
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* The reason for C&Ping jasmine's clock here is that jasmine itself is
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* difficult to webpack, and we don't really want all of it. Sinon also has a
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* mock-clock implementation, but again, it is difficult to webpack.
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*/
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var j$ = {};
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j$.Clock = function () {
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function Clock(global, delayedFunctionSchedulerFactory, mockDate) {
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var self = this,
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realTimingFunctions = {
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setTimeout: global.setTimeout,
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clearTimeout: global.clearTimeout,
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setInterval: global.setInterval,
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clearInterval: global.clearInterval
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},
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fakeTimingFunctions = {
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setTimeout: setTimeout,
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clearTimeout: clearTimeout,
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setInterval: setInterval,
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clearInterval: clearInterval
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},
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installed = false,
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delayedFunctionScheduler,
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timer;
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self.install = function() {
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if(!originalTimingFunctionsIntact()) {
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throw new Error('Jasmine Clock was unable to install over custom global timer functions. Is the clock already installed?');
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}
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replace(global, fakeTimingFunctions);
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timer = fakeTimingFunctions;
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delayedFunctionScheduler = delayedFunctionSchedulerFactory();
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installed = true;
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return self;
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};
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self.uninstall = function() {
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delayedFunctionScheduler = null;
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mockDate.uninstall();
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replace(global, realTimingFunctions);
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timer = realTimingFunctions;
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installed = false;
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};
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self.withMock = function(closure) {
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this.install();
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try {
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closure();
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} finally {
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this.uninstall();
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}
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};
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self.mockDate = function(initialDate) {
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mockDate.install(initialDate);
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};
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self.setTimeout = function(fn, delay, params) {
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if (legacyIE()) {
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if (arguments.length > 2) {
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throw new Error('IE < 9 cannot support extra params to setTimeout without a polyfill');
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}
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return timer.setTimeout(fn, delay);
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}
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return Function.prototype.apply.apply(timer.setTimeout, [global, arguments]);
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};
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self.setInterval = function(fn, delay, params) {
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if (legacyIE()) {
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if (arguments.length > 2) {
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throw new Error('IE < 9 cannot support extra params to setInterval without a polyfill');
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}
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return timer.setInterval(fn, delay);
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}
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return Function.prototype.apply.apply(timer.setInterval, [global, arguments]);
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};
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self.clearTimeout = function(id) {
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return Function.prototype.call.apply(timer.clearTimeout, [global, id]);
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};
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self.clearInterval = function(id) {
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return Function.prototype.call.apply(timer.clearInterval, [global, id]);
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};
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self.tick = function(millis) {
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if (installed) {
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mockDate.tick(millis);
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delayedFunctionScheduler.tick(millis);
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} else {
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throw new Error('Mock clock is not installed, use jasmine.clock().install()');
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}
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};
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return self;
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function originalTimingFunctionsIntact() {
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return global.setTimeout === realTimingFunctions.setTimeout &&
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global.clearTimeout === realTimingFunctions.clearTimeout &&
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global.setInterval === realTimingFunctions.setInterval &&
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global.clearInterval === realTimingFunctions.clearInterval;
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}
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function legacyIE() {
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//if these methods are polyfilled, apply will be present
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return !(realTimingFunctions.setTimeout || realTimingFunctions.setInterval).apply;
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}
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function replace(dest, source) {
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for (var prop in source) {
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dest[prop] = source[prop];
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}
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}
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function setTimeout(fn, delay) {
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return delayedFunctionScheduler.scheduleFunction(fn, delay, argSlice(arguments, 2));
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}
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function clearTimeout(id) {
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return delayedFunctionScheduler.removeFunctionWithId(id);
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}
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function setInterval(fn, interval) {
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return delayedFunctionScheduler.scheduleFunction(fn, interval, argSlice(arguments, 2), true);
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}
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function clearInterval(id) {
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return delayedFunctionScheduler.removeFunctionWithId(id);
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}
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function argSlice(argsObj, n) {
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return Array.prototype.slice.call(argsObj, n);
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}
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}
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return Clock;
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}();
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j$.DelayedFunctionScheduler = function() {
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function DelayedFunctionScheduler() {
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var self = this;
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var scheduledLookup = [];
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var scheduledFunctions = {};
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var currentTime = 0;
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var delayedFnCount = 0;
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self.tick = function(millis) {
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millis = millis || 0;
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var endTime = currentTime + millis;
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runScheduledFunctions(endTime);
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currentTime = endTime;
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};
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self.scheduleFunction = function(funcToCall, millis, params, recurring, timeoutKey, runAtMillis) {
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var f;
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if (typeof(funcToCall) === 'string') {
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/* jshint evil: true */
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f = function() { return eval(funcToCall); };
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/* jshint evil: false */
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} else {
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f = funcToCall;
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}
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millis = millis || 0;
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timeoutKey = timeoutKey || ++delayedFnCount;
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runAtMillis = runAtMillis || (currentTime + millis);
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var funcToSchedule = {
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runAtMillis: runAtMillis,
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funcToCall: f,
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recurring: recurring,
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params: params,
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timeoutKey: timeoutKey,
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millis: millis
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};
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if (runAtMillis in scheduledFunctions) {
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scheduledFunctions[runAtMillis].push(funcToSchedule);
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} else {
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scheduledFunctions[runAtMillis] = [funcToSchedule];
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scheduledLookup.push(runAtMillis);
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scheduledLookup.sort(function (a, b) {
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return a - b;
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});
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}
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return timeoutKey;
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};
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self.removeFunctionWithId = function(timeoutKey) {
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for (var runAtMillis in scheduledFunctions) {
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var funcs = scheduledFunctions[runAtMillis];
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var i = indexOfFirstToPass(funcs, function (func) {
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return func.timeoutKey === timeoutKey;
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});
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if (i > -1) {
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if (funcs.length === 1) {
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delete scheduledFunctions[runAtMillis];
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deleteFromLookup(runAtMillis);
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} else {
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funcs.splice(i, 1);
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}
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// intervals get rescheduled when executed, so there's never more
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// than a single scheduled function with a given timeoutKey
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break;
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}
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}
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};
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return self;
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function indexOfFirstToPass(array, testFn) {
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var index = -1;
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for (var i = 0; i < array.length; ++i) {
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if (testFn(array[i])) {
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index = i;
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break;
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}
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}
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return index;
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}
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function deleteFromLookup(key) {
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var value = Number(key);
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var i = indexOfFirstToPass(scheduledLookup, function (millis) {
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return millis === value;
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});
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if (i > -1) {
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scheduledLookup.splice(i, 1);
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}
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}
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function reschedule(scheduledFn) {
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self.scheduleFunction(scheduledFn.funcToCall,
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scheduledFn.millis,
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scheduledFn.params,
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true,
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scheduledFn.timeoutKey,
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scheduledFn.runAtMillis + scheduledFn.millis);
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}
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function forEachFunction(funcsToRun, callback) {
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for (var i = 0; i < funcsToRun.length; ++i) {
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callback(funcsToRun[i]);
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}
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}
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function runScheduledFunctions(endTime) {
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if (scheduledLookup.length === 0 || scheduledLookup[0] > endTime) {
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return;
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}
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do {
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currentTime = scheduledLookup.shift();
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var funcsToRun = scheduledFunctions[currentTime];
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delete scheduledFunctions[currentTime];
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forEachFunction(funcsToRun, function(funcToRun) {
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if (funcToRun.recurring) {
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reschedule(funcToRun);
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}
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});
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forEachFunction(funcsToRun, function(funcToRun) {
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funcToRun.funcToCall.apply(null, funcToRun.params || []);
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});
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} while (scheduledLookup.length > 0 &&
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// checking first if we're out of time prevents setTimeout(0)
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// scheduled in a funcToRun from forcing an extra iteration
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currentTime !== endTime &&
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scheduledLookup[0] <= endTime);
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}
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}
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return DelayedFunctionScheduler;
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}();
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j$.MockDate = function() {
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function MockDate(global) {
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var self = this;
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var currentTime = 0;
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if (!global || !global.Date) {
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self.install = function() {};
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self.tick = function() {};
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self.uninstall = function() {};
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return self;
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}
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var GlobalDate = global.Date;
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self.install = function(mockDate) {
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if (mockDate instanceof GlobalDate) {
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currentTime = mockDate.getTime();
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} else {
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currentTime = new GlobalDate().getTime();
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}
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global.Date = FakeDate;
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};
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self.tick = function(millis) {
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millis = millis || 0;
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currentTime = currentTime + millis;
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};
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self.uninstall = function() {
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currentTime = 0;
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global.Date = GlobalDate;
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};
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createDateProperties();
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return self;
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function FakeDate() {
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switch(arguments.length) {
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case 0:
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return new GlobalDate(currentTime);
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case 1:
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return new GlobalDate(arguments[0]);
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case 2:
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return new GlobalDate(arguments[0], arguments[1]);
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case 3:
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return new GlobalDate(arguments[0], arguments[1], arguments[2]);
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case 4:
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return new GlobalDate(arguments[0], arguments[1], arguments[2], arguments[3]);
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case 5:
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return new GlobalDate(arguments[0], arguments[1], arguments[2], arguments[3],
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arguments[4]);
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case 6:
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return new GlobalDate(arguments[0], arguments[1], arguments[2], arguments[3],
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arguments[4], arguments[5]);
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default:
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return new GlobalDate(arguments[0], arguments[1], arguments[2], arguments[3],
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arguments[4], arguments[5], arguments[6]);
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}
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}
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function createDateProperties() {
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FakeDate.prototype = GlobalDate.prototype;
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FakeDate.now = function() {
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if (GlobalDate.now) {
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return currentTime;
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} else {
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throw new Error('Browser does not support Date.now()');
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}
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};
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FakeDate.toSource = GlobalDate.toSource;
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FakeDate.toString = GlobalDate.toString;
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FakeDate.parse = GlobalDate.parse;
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FakeDate.UTC = GlobalDate.UTC;
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}
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}
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return MockDate;
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}();
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var clock = new j$.Clock(global, function () { return new j$.DelayedFunctionScheduler(); }, new j$.MockDate(global));
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module.exports.clock = function() {
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return clock;
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}
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