AngularJS＆amp; Karma-Jasmin - 并非所有测试都被执行，只有第一个

Question

我想使用Karma-Jasmin测试我的代码，但是当我运行测试时，只有第一个被激活。我发现当我删除代码的某些部分时它会起作用，我会把它粘贴在底部。

这是我的整个Jasmine代码

describe("UserHandler", function(){
    var el, scope, controller, configServiceSpy, myService, userDetails, myController, $httpBackend;

    beforeEach(function () {
        module('agenda');

        beforeEach(inject(function(_$httpBackend_){
            $httpBackend = _$httpBackend_;
        }));

        inject(function (userHandler) {
            myService = userHandler;

            myService.userDetails = {};
            myService.userId = "P123";
            myService.userDetails.expire_timestamp = 999999999999;
            $httpBackend.expectGET('http://..../123').respond(200, {"foo" : "bar", "foo2": "bar2", "address": { "street":"some street" }})

            myService.requestUserDetails();
            userDetails = myService.userDetails;

        });

        inject(function($compile, $rootScope){
            el = angular.element("<login-sidebar></login-sidebar>");
            $compile(el)($rootScope.$new());
                $rootScope.$digest();
                scope = el.isolateScope() || el.scope() ;
        }); 
    });

    afterEach(function(){
        $httpBackend.verifyNoOutstandingExpectation();
        $httpBackend.verifyNoOutstandingRequest();
    });

    it("true is true", function(){
        $httpBackend.flush();
        expect(true).toBe(true);
    });

    it("requestUserDetails", function(){
        $httpBackend.flush();
        expect(Object.keys(myService.userDetails).length).toBeGreaterThan(0);

    });

    it("getUserStreet not null", function(){
        $httpBackend.flush();
        expect(myService.userDetails.address.street).not.toBeNull();
    });

    xit("getUserStreet null", function(){
        $httpBackend.flush();
        expect(myService.userDetails.address.street).toBeNull();
    });

});

这是控制台中的输出

Chrome 43.0.2357 (Mac OS X 10.10.3): Executed 1 of 4 (skipped 1) SUCCESS (0.079 secs / 0.07 secs)

因此，当我删除使用HTTP请求执行某些操作的部分时，它可以正常工作

当我删除这些代码行时

beforeEach(inject(function(_$httpBackend_){
    $httpBackend = _$httpBackend_;
}));

inject(function (userHandler) {
    myService = userHandler;

    myService.userDetails = {};
    myService.userId = "P123";
    myService.userDetails.expire_timestamp = 999999999999;
    $httpBackend.expectGET('http://..../123').respond(200, {"foo" : "bar", "foo2": "bar2", "address": { "street":"some street" }})

    myService.requestUserDetails();
    userDetails = myService.userDetails;

});

afterEach(function(){
    $httpBackend.verifyNoOutstandingExpectation();
    $httpBackend.verifyNoOutstandingRequest();
});

我做错了什么？为什么它不是仅执行所有测试的第一个测试（哪个测试是第一个测试并不重要。）