问题描述
在角JS单元测试,我想成立XHR响应每个试验(在它办法),而不是在beforeEach方法,但似乎不工作?
此工作
描述('ExampleListCtrl',函数(){
变量$范围,$ httpBackend; beforeEach(注(功能(_ $ httpBackend_,$ rootScope,$控制器){
$ httpBackend = _ $ httpBackend_;
。$ httpBackend.expectGET('范例')响应([]); //< ---这ONE
$控制器(ExampleListCtrl,{$范围:$范围= $ rootScope $新的()});
})); 它('应该创建实例0例如牵强',函数(){
预计($ scope.examples).toBeUndefined();
$ httpBackend.flush();
期待($ scope.examples).toEqual([]);
});});
结果
执行的8成功的8(0.366秒/ 0.043秒)
但这种失败,错误当我移动expectGet方法每个方法。我不知道为什么。
描述('ExampleListCtrl',函数(){
变量$范围,$ httpBackend; beforeEach(注(功能(_ $ httpBackend_,$ rootScope,$控制器){
$ httpBackend = _ $ httpBackend_;
$控制器(ExampleListCtrl,{$范围:$范围= $ rootScope $新的()});
})); 它('应该创建实例0例如牵强',函数(){
。$ httpBackend.expectGET('范例')响应([]); //< ---搬到这里
期待($ scope.examples).toBeUndefined();
$ httpBackend.flush();
期待($ scope.examples).toEqual([]);
});
});
以下是错误
....
在/Users/me/app/test/unit/controllers/ExampleListCtrlSpec.js:3:1
错误:没有挂起请求刷新
在错误(小于匿名>)
在功能。$ httpBackend.flush(/Users/me/app/test/lib/angular/angular-mocks.js:1171:34)
在空<&匿名GT; (/Users/me/app/test/unit/controllers/ExampleListCtrlSpec.js:14:18)
---- ----编辑
按照下面的意见,我提出了从控制器的beforeEach以及改变测试这样的,这样我可以测试$ httpBackend.expectGET不止一次。
描述('ExampleListCtrl',函数(){
变量$范围,$ rootScope,$ httpBackend; beforeEach(注(功能(_ $ httpBackend_,$ rootScope,$控制器){
$ httpBackend = _ $ httpBackend_;
控制器= $控制器;
$范围= $ rootScope $新的()。
})); 它('应该创建0例如,从XHR获取实例模式',函数(){
。$ httpBackend.expectGET('范例')响应([]);
控制器(ExampleListCtrl,{$范围:$范围});
$ httpBackend.flush();
预计($ scope.examples).toEqual([]);
});});
这是因为,一旦你实例化控制器,它提取 $ HTTP
,因此, $ httBackend
。因此,所有的期望应前需要它使。
如果你想将你的 $ httpBackend.expectGet
来规范(是
块),那么你需要移动你的 $控制器(ExempleListCtrl,...
为好,预期。
In angular js unit test, I wanted to set xhr response to each test(in "it" method"), not in beforeEach method, but it seems not working.?
This works
describe('ExampleListCtrl', function(){
var $scope, $httpBackend;
beforeEach(inject(function(_$httpBackend_, $rootScope, $controller) {
$httpBackend = _$httpBackend_;
$httpBackend.expectGET('examples').respond([]); // <--- THIS ONE
$controller(ExampleListCtrl, {$scope: $scope = $rootScope.$new()});
}));
it('should create "examples" with 0 example fetched', function() {
expect($scope.examples).toBeUndefined();
$httpBackend.flush();
expect($scope.examples).toEqual([]);
});
});
result
Executed 8 of 8 SUCCESS (0.366 secs / 0.043 secs)
But this fails with error when I move expectGet method to each method. I don't know why.
describe('ExampleListCtrl', function(){
var $scope, $httpBackend;
beforeEach(inject(function(_$httpBackend_, $rootScope, $controller) {
$httpBackend = _$httpBackend_;
$controller(ExampleListCtrl, {$scope: $scope = $rootScope.$new()});
}));
it('should create "examples" with 0 example fetched', function() {
$httpBackend.expectGET('examples').respond([]); // <--- MOVED TO HERE
expect($scope.examples).toBeUndefined();
$httpBackend.flush();
expect($scope.examples).toEqual([]);
});
});
Here is the error
....
at /Users/me/app/test/unit/controllers/ExampleListCtrlSpec.js:3:1
Error: No pending request to flush
at Error (<anonymous>)
at Function.$httpBackend.flush (/Users/me/app/test/lib/angular/angular-mocks.js:1171:34)
at null.<anonymous> (/Users/me/app/test/unit/controllers/ExampleListCtrlSpec.js:14:18)
---- Edited ----
Following the advice below, I have moved the controller out of beforeEach, and changed test like this, so that I can test $httpBackend.expectGET more than once.
describe('ExampleListCtrl', function(){
var $scope, $rootScope, $httpBackend;
beforeEach(inject(function(_$httpBackend_, $rootScope, $controller) {
$httpBackend = _$httpBackend_;
controller = $controller;
$scope = $rootScope.$new();
}));
it('should create "examples" model with 0 example fetched from xhr', function() {
$httpBackend.expectGET('examples').respond([]);
controller(ExampleListCtrl, {$scope: $scope});
$httpBackend.flush();
expect($scope.examples).toEqual([]);
});
});
This happens because once you instantiate your controller, it fetches $http
and, thus, $httBackend
. So, all expectations shall be made prior to requiring it.
If you wish to move your $httpBackend.expectGet
to the spec (it
block) then you need to move your $controller(ExempleListCtrl, ...
as well, after the expectations.
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