javascript 使用 spy 进行单元测试失败。说间谍从未被召唤
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Unit test with spy is failing. Says spy was never called
提问by gaoban
This is the code I'm testing
这是我正在测试的代码
eventsApp.factory('userData', ['userResource', function(userResource){
return{
getUser: function(userName, callback){
return userResource.get({userName:userName}, function(user){
if(callback)
callback(user);
});
};
}]);
And this is the Jasmine test for it
这是茉莉花测试
describe('userData', function(){
var mockUserResource;
beforeEach(module('eventsApp'));
beforeEach(function(){
mockUserResource = {get: function(){} };
module(function($provide){
$provide.value('userResource', mockUserResource);
});
});
it('should make a call to userResource.get with provided userName', inject(function(userData){
userData.getUser('Bob');
spyOn(mockUserResource, 'get');
expect(mockUserResource.get).toHaveBeenCalledWith({userName:'Bob'});
}));
});
Why is this failing? It says
为什么这会失败？它说
"Expected spy get to have been called with [ { userName : 'Bob' } ] but it was never called".
“使用 [ { userName : 'Bob' } ] 调用了预期的 spy get 但从未调用过”。
.toHaveBeenCalled()also fails.
.toHaveBeenCalled()也失败了。
回答by glepretre
Shouldn't you set the spy before doing the GET request?
你不应该在做 GET 请求之前设置间谍吗？
it('should make a call to userResource.get with provided userName', inject(function(userData){
//arrange
spyOn(mockUserResource, 'get');
//act
userData.getUser('Bob');
//assert
expect(mockUserResource.get).toHaveBeenCalledWith({userName:'Bob'});
}));
EDIT:The Arrange-Act-Assert pattern;)
编辑：在安排-ACT-断言模式;）
