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// Copyright (c) 2013 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
'use strict';
base.require('base.raf');
base.unittest.testSuite('base.raf', function() {
var fakeNow = undefined;
function withFakeWindowPerformanceNow(func) {
var oldNow = window.performance.now;
try {
window.performance.now = function() { return fakeNow; };
func();
} finally {
window.performance.now = oldNow;
}
}
test('runIdleTaskWhileIdle', function() {
withFakeWindowPerformanceNow(function() {
base.forcePendingRAFTasksToRun(100000); // Clear current RAF task queue.
var rafRan = false;
base.requestAnimationFrame(function() {
rafRan = true;
});
var idleRan = false;
base.requestIdleCallback(function() {
idleRan = true;
});
fakeNow = 0;
base.forcePendingRAFTasksToRun(fakeNow);
assertFalse(idleRan);
assertTrue(rafRan);
base.forcePendingRAFTasksToRun(fakeNow);
assertTrue(idleRan);
});
});
test('twoShortIdleCallbacks', function() {
withFakeWindowPerformanceNow(function() {
base.forcePendingRAFTasksToRun(100000); // Clear current RAF task queue.
var idle1Ran = false;
var idle2Ran = false;
base.requestIdleCallback(function() {
fakeNow += 1;
idle1Ran = true;
});
base.requestIdleCallback(function() {
fakeNow += 1;
idle2Ran = true;
});
fakeNow = 0;
base.forcePendingRAFTasksToRun(fakeNow);
assertTrue(idle1Ran);
assertTrue(idle2Ran);
});
});
test('oneLongOneShortIdleCallback', function() {
withFakeWindowPerformanceNow(function() {
base.forcePendingRAFTasksToRun(100000); // Clear current RAF task queue.
var idle1Ran = false;
var idle2Ran = false;
base.requestIdleCallback(function() {
fakeNow += 100;
idle1Ran = true;
});
base.requestIdleCallback(function() {
fakeNow += 1;
idle2Ran = true;
});
fakeNow = 0;
base.forcePendingRAFTasksToRun(fakeNow);
assertTrue(idle1Ran);
assertFalse(idle2Ran);
// Reset idle1Ran to verify that it dosn't run again.
idle1Ran = false;
// Now run. idle2 should now run.
base.forcePendingRAFTasksToRun(fakeNow);
assertFalse(idle1Ran);
assertTrue(idle2Ran);
});
});
test('buggyPerformanceNowDoesNotBlockIdleTasks', function() {
withFakeWindowPerformanceNow(function() {
base.forcePendingRAFTasksToRun(); // Clear current RAF task queue.
var idle1Ran = false;
var idle2Ran = false;
base.requestIdleCallback(function() {
fakeNow += 100;
idle1Ran = true;
});
base.requestIdleCallback(function() {
fakeNow += 1;
idle2Ran = true;
});
fakeNow = 10000;
base.forcePendingRAFTasksToRun(0);
assertTrue(idle1Ran);
assertFalse(idle2Ran);
// Reset idle1Ran to verify that it dosn't run again.
idle1Ran = false;
// Now run. idle2 should now run.
base.forcePendingRAFTasksToRun(0);
assertFalse(idle1Ran);
assertTrue(idle2Ran);
});
});
});
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