[英]How to test if method has been called only once and not the second time in Jasmine?
I am testing mechanism that should call method once and prevent any subsequent calls with jasmine, I can see by attaching breakpoints that method is NOT being called second time however jasmine test fails. 我正在测试应该调用方法一次的机制并阻止任何后续调用jasmine,我可以通过附加断点看到方法未被第二次调用但是jasmine测试失败。 I would assume it has to do with spy
not being designed to be used for multiple checks. 我认为它与spy
没有被设计用于多次检查有关。
What would be proper solution to given situation? 什么是适当的解决方案?
JSfiddle of Code that is being tested I could not figure out how to do jasmine test jsfiddle properly (Jasmine version I am using is 1.3.1 while test template is on 1.2.0). 正在测试的JSfiddle of Code我无法弄清楚如何正确地执行茉莉花测试jsfiddle(我使用的Jasmine版本是1.3.1而测试模板是1.2.0)。
Test looks like this: 测试看起来像这样:
it("Invoking OnPreQuery will add event listener for OnTheMoveViewPreLoad event. Triggering OnTheMoveViewPreLoad twice will call getChildrenForMasterRecordList only first time", function () {
AddTreeSettingsObjectToBC({ bc: bc, Tree: { IncludeChildren: true} });
ComposeMockPageObjWithObservableFieldsWithChildren();
var preQuerySpy = spyOnEvent(onTheMove.PageDataRoles, 'OnPreQuery');
$(onTheMove.PageDataRoles).trigger('OnPreQuery', { knockoutContextName: 'bc' });
expect('OnPreQuery').toHaveBeenTriggeredOn(onTheMove.PageDataRoles);
expect(preQuerySpy).toHaveBeenTriggered();
var getChildrenForMasterRecordListSpy = spyOn(window, 'getChildrenForMasterRecordList');
$(onTheMove.PageDataRoles).trigger('OnTheMoveViewPreLoad', { knockoutContextName: 'bc' });
expect(getChildrenForMasterRecordListSpy).toHaveBeenCalled();
$(onTheMove.PageDataRoles).trigger('OnTheMoveViewPreLoad', { knockoutContextName: 'bc' });
expect(getChildrenForMasterRecordListSpy).not.toHaveBeenCalled();
});
Code that is being tested: HTML 正在测试的代码:HTML
<div data-role="page"></div>
Javascript 使用Javascript
var onTheMove = function(){};
$.extend(onTheMove,{
NullValue : "null",
PageDataRoles : 'div[data-role="page"], div[data-role="dialog"]',
OnTheMovePrefix : 'OnTheMove_'
});
$(document).on('OnPreQuery', onTheMove.PageDataRoles, function (e, options) {
var isChildAttachmentQueued = true;
var knockoutContextName = options.knockoutContextName;
if (TreeEnabled(knockoutContextName)) {
var isModelReadyToAttachChildren = function () {
var isReady = false;
if (PageObj[knockoutContextName] != undefined) {
isReady = (PageObj[knockoutContextName]().length > 0) && isChildAttachmentQueued;
}
return isReady;
};
var treeSettings = eval(knockoutContextName).Tree;
treeSettings.knockoutContextName = knockoutContextName;
$(onTheMove.PageDataRoles).on('OnTheMoveViewPreLoad', function (e, options) {
if (isModelReadyToAttachChildren()) {
getChildrenForMasterRecordList({
parentTable: eval(knockoutContextName).primaryTableName,
knockoutContextName: treeSettings.knockoutContextName,
parentIdColumn: treeSettings.ParentIdColumn,
masterIdColumn: treeSettings.MasterIdColumn
});
isChildAttachmentQueued = false;
}
});
}
});
function getChildrenForMasterRecordList(options) {
console.log('beep');
}
Figured it out myself, spy has property callCount
that auto-increments by one on each call. 我自己想出来,间谍有一个属性callCount
,每次调用都会自动递增1。
it("Invoking OnPreQuery will add event listener for OnTheMoveViewPreLoad event. Triggering OnTheMoveViewPreLoad twice will call getChildrenForMasterRecordList only first time", function () {
AddTreeSettingsObjectToBC({ bc: bc, Tree: { IncludeChildren: true} });
ComposeMockPageObjWithObservableFieldsWithChildren();
var preQuerySpy = spyOnEvent(onTheMove.PageDataRoles, 'OnPreQuery');
$(onTheMove.PageDataRoles).trigger('OnPreQuery', { knockoutContextName: 'bc' });
expect('OnPreQuery').toHaveBeenTriggeredOn(onTheMove.PageDataRoles);
expect(preQuerySpy).toHaveBeenTriggered();
var getChildrenForMasterRecordListSpy = spyOn(window, 'getChildrenForMasterRecordList');
$(onTheMove.PageDataRoles).trigger('OnTheMoveViewPreLoad', { knockoutContextName: 'bc' });
expect(getChildrenForMasterRecordListSpy).toHaveBeenCalled();
$(onTheMove.PageDataRoles).trigger('OnTheMoveViewPreLoad', { knockoutContextName: 'bc' });
expect(getChildrenForMasterRecordListSpy.callCount).toEqual(1);
});
as per comment 根据评论
in Jasmine 2.0 its 在Jasmine 2.0中
expect(object.func.calls.count()).toBe(1);
toHaveBeenCalledTimes(1) toHaveBeenCalledTimes(1)
now makes this much easier. 现在让这更容易。
expect(yourSpy).toHaveBeenCalledTimes(1);
声明:本站的技术帖子网页,遵循CC BY-SA 4.0协议,如果您需要转载,请注明本站网址或者原文地址。任何问题请咨询:yoyou2525@163.com.