69 lines
1.3 KiB
JavaScript
69 lines
1.3 KiB
JavaScript
"use strict"
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var o = require("../../ospec/ospec")
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var domMock = require("../../test-utils/domMock")
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var async = require("./async")
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var limiter = require("../limiter")
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o.spec("fps limiter", function() {
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var $window, root
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[
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"setTimeout",
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"requestAnimationFrame",
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].forEach(function(type) {
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o.spec(type, function() {
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o.beforeEach(function() {
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$window = domMock()
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async[type]($window)
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})
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o("is a function", function() {
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o(typeof limiter).equals("function")
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})
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o("it returns a function", function() {
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o(typeof limiter($window, false)).equals("function")
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})
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o("it runs synchronously the first time", function() {
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var spy = o.spy()
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var run = limiter($window, spy)
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run()
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o(spy.callCount).equals(1)
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})
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o("it only runs once per tick", function(done) {
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var spy = o.spy()
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var run = limiter($window, spy)
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run()
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run()
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run()
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o(spy.callCount).equals(1)
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setTimeout(function() {
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o(spy.callCount).equals(2)
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done()
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}, 17)
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})
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o("it supports forcing a synchronous redraw", function() {
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var spy = o.spy()
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var run = limiter($window, spy)
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run()
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run()
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run(true)
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o(spy.callCount).equals(2)
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})
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})
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})
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})
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