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63 lines
1.4 KiB
63 lines
1.4 KiB
2 years ago
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var test = require('tape')
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, raf = require('./index.js')
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test('continues to emit events', function(t) {
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t.plan(11)
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var start = new Date().getTime()
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, times = 0
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raf(function tick(dt) {
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t.ok(dt >= 0, 'time has passed: ' + dt)
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if(++times == 10) {
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var elapsed = (new Date().getTime() - start)
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t.ok(elapsed >= 150, 'should take at least 9 frames worth of wall time: ' + elapsed)
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t.end()
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} else {
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raf(tick)
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}
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})
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})
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test('cancel removes callbacks from queue', function(t) {
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t.plan(6)
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function cb1() { cb1.called = true }
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function cb2() { cb2.called = true }
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function cb3() { cb3.called = true }
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var handle1 = raf(cb1)
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t.ok(handle1, 'returns a handle')
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var handle2 = raf(cb2)
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t.ok(handle2, 'returns a handle')
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var handle3 = raf(cb3)
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t.ok(handle3, 'returns a handle')
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raf.cancel(handle2)
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raf(function() {
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t.ok(cb1.called, 'callback was invoked')
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t.notOk(cb2.called, 'callback was cancelled')
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t.ok(cb3.called, 'callback was invoked')
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t.end()
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})
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})
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test('raf should throw on errors', function(t) {
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t.plan(1)
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var onError = function() {
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t.pass('error bubbled up to event loop')
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}
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if(typeof window !== 'undefined') {
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window.onerror = onError
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} else if(typeof process !== 'undefined') {
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process.on('uncaughtException', onError)
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}
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raf(function() {
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throw new Error('foo')
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})
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})
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