我在学习使用 Karma 对一些 AngularJS 代码进行单元测试时遇到困难,并且对 $httpBackend 的使用感到困惑。我创建了测试的精炼版本,仅显示我模拟 get 请求并期望看到对httpBackend.get(...)
.
describe('Basics', function() {
var httpBackend;
beforeEach(angular.mock.inject(function($httpBackend) {
httpBackend = $httpBackend;
httpBackend.when("GET", "/foo.json").respond("{\"name\":\"value\"}");
}));
it('should complete this task', function() {
console.log(httpBackend);
var getFoo = httpBackend.get("/foo.json"); // line 11
httpBackend.flush();
});
});
它在第 11 行失败。这是我在日志中看到的内容。
LOG: function $httpBackend(method, url, data, callback, headers, timeout, withCredentials) { ... }
Chrome 36.0.1985 (Mac OS X 10.9.4) Basics should complete this task FAILED
TypeError: undefined is not a function
at null.<anonymous> (/path/to/app/main/httptest.js:11:30)
Chrome 36.0.1985 (Mac OS X 10.9.4): Executed 1 of 1 (1 FAILED) ERROR (0.023 secs / 0.021 secs)
我错过了什么?
[编辑:这就是我出错的地方......我将 $httpBackend 视为 $http 的模拟,而实际上并非如此。以下代码成功。]
describe('Basics', function() {
var httpBackend;
var http;
beforeEach(angular.mock.inject(function($httpBackend, $http) {
httpBackend = $httpBackend;
http = $http;
httpBackend.when("GET", "/foo.json").respond("{\"name\":\"value\"}");
}));
it('should complete this task', function() {
console.log(httpBackend);
var getFoo=http.get("/foo.json") // line 11
.success(function(data) {})
.error(function() {});
httpBackend.flush();
})
});