在AngularJS/karma/jasmine测试中通过$ http测试后端API？

Question

如何使用AngularJS/karma/jasmine测试测试我的API后端？

我试图创建显示我的错误的最小测试用例:

echo_server.py

from bottle import response, route, run

@route('/echo/<echo>')
def echo_echo(echo):
    response.headers['Access-Control-Allow-Origin'] = '*'
    return {'echo': echo}    # Served as JSON

if __name__ == '__main__':
    run()

测试/单元/ apiSpec.js

// Should this be in `test/e2e/apiSpec.js`?
describe('echo', function () {
    var scope, http;

    beforeEach(inject(function ($rootScope, $http) {
        $http.defaults.useXDomain = true;    // CORS
        scope = $rootScope.$new();
        http = $http;
    }));


    it("should echo from server", function () {
        scope.$apply(function () {
            var ret;
            http.get("http://localhost:8080/echo/foo")
                .success(function (data, status, headers, config) {
                             ret = data;
                         })
                .error(function (data, status, headers, config) {
                           ret = data;
                       });
            console.log('ret = ' + ret);
            expect(ret.echo).toBe("foo");
        });
    });
});

输出 karma start configs/karma.conf.js

INFO [karma]: Karma v0.10.8 server started at http://localhost:9876/
INFO [launcher]: Starting browser PhantomJS
INFO [PhantomJS 1.9.2 (Linux)]: Connected on socket m7imfgmhXdOY9JVKJh8r
LOG: 'ret = undefined'
PhantomJS 1.9.2 (Linux) echo should echo from server FAILED
    Error: Unexpected request: GET http://localhost:8080/echo/foo
    No more request expected
        at $httpBackend (~Projects/~karma-tests/test/lib/angular/angular-mocks.js:1178)
    ...

Answer 1

提到的测试堆栈不打算以这种方式使用.该请求永远不会被派遣,因为$httpMockBackend它已经在您的原件上进行了装饰$httpBackend.

要允许请求通过,您需要排除angular-mocks.js,或指定一些网址应该通过这样:

angular.module('yourModule').run(function ($httpBackend) {
    $httpBackend.whenGET(/.*/).passThrough();
}

阅读此处的文档$httpMockBackend

此外,您的测试是同步的,并且服务器响应是异步的,因此它将无法按预期工作.