katoikia-app/web-ui/web-react/node_modules/raf/test.js

63 lines
1.4 KiB
JavaScript

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