如何茉莉测试一个AngularJS控制器调用返回的承诺服务方法
我用的茉莉测试框架AngularJS的V1.2.0-rc.3。
I am using v1.2.0-rc.3 of AngularJS with Jasmine test framework.
我想断言控制器调用服务方法。该服务方法返回一个承诺。该控制器是这样的:
I am trying to assert that a controller calls a service method. The service method returns a promise. The controller looks like this:
angular.module('test', [])
.controller('ctrl', ['$scope', 'svc', function ($scope, svc) {
$scope.data = [];
svc.query()
.then(function (data) {
$scope.data = data;
});
}]);
欲测试数据被分配给的范围时,服务方法的延期得到解决。我创建了一个模拟的服务和单元测试是这样的:
I want to test that data is assigned to the scope when the service method's deferred is resolved. I have created a mock for the service and the unit test looks like this:
describe('ctrl', function () {
var ctrl, scope, svc, def, data = [{name: 'test'}];
beforeEach(module('test'));
beforeEach(inject(function($controller, $rootScope, $q) {
svc = {
query: function () {
def = $q.defer();
return def.promise;
}
};
scope = $rootScope.$new();
controller = $controller('ctrl', {
$scope: scope,
svc: svc
});
}));
it('should assign data to scope', function () {
spyOn(svc, 'query').andCallThrough();
deferred.resolve(data);
scope.$digest();
expect(svc.query).toHaveBeenCalled();
expect(scope.data).toBe(data);
});
});
我预计SVC的查询方法被调用,但显然它没有。
I expect the query method of svc to be called, but apparently it hasn't.
我跟着这个指南href=\"http://codingsmackdown.tv/blog/2012/12/28/mocking-promises-in-unit-tests/\">在单元测试嘲讽的承诺
I followed this guide to mocking promises in unit tests.
我在做什么错了?
看来我还是把我的间谍在错误的地方。当我把它放在beforeEach,测试通过。
It seems I was placing my spy in the wrong place. When I place it in the beforeEach, the test passes.
beforeEach(inject(function($controller, $rootScope, $q) {
svc = {
query: function () {
def = $q.defer();
return def.promise;
}
};
spyOn(svc, 'query').andCallThrough();
scope = $rootScope.$new();
controller = $controller('ctrl', {
$scope: scope,
svc: svc
});
}));