我只是尝试用jasmine在javascript / coffeescript中进行单元测试,非常好。
我一直在尝试使用jasmine.Clock.Mock()来及时推进并触发setTimeout回调。
唉jasmine.Clock.tick(1001)似乎没有任何效果! 然后我发现了有自己时间模仿的sinon.js,使用这个就好了。我想了解原因。
这是一个要测试的虚拟jquery插件:
dummy_method = function(callback) {
fire_callback = function() {
callback();
}
setTimeout("fire_callback()", 1000);
}
以下是规格的两个版本:
# Working test (spy was called as expected), using sinon FakeTimers
describe "jQuery.fn.countdown", ->
beforeEach () ->
this.clock = sinon.useFakeTimers();
afterEach () ->
this.clock.restore()
it 'should fireup the callback', ->
countdown_callback = jasmine.createSpy('countdown_callback');
dummy_method(countdown_callback)
this.clock.tick(1001)
expect(countdown_callback).toHaveBeenCalled()
# Non-working test (spy is never called), using jasmine Clock Mock
describe "jQuery.fn.countdown", ->
beforeEach () ->
jasmine.Clock.useMock()
it 'should fireup the callback', ->
countdown_callback = jasmine.createSpy('countdown_callback');
dummy_method(countdown_callback)
jasmine.Clock.tick(1001)
expect(countdown_callback).toHaveBeenCalled()
答案 0 :(得分:2)
如果传递的参数是函数或字符串,Jasmine只是尝试调用sinon测试的函数。如果是一个字符串,则调用eval
。
<强>茉莉花:强>
jasmine.getGlobal().setTimeout = function(funcToCall, millis) {
if (jasmine.Clock.installed.setTimeout.apply) {
return jasmine.Clock.installed.setTimeout.apply(this, arguments);
} else {
return jasmine.Clock.installed.setTimeout(funcToCall, millis);
}
};
<强>兴农:强>
if (typeof timer.func == "function") {
timer.func.apply(null, timer.invokeArgs);
} else {
eval(timer.func);
}
所以这将通过Jasmin测试
setTimeout(fire_callback, 1000);
虽然这会失败
setTimeout("fire_callback()", 1000);