[英]Spying on something inside a closure - AngularJS Jasmine testing
我有一個無法解決的簡單示例。 雖然這個例子很簡單,但我想知道如何使用Jasmine單元測試來監視$ log.error。 我相信關閉是個問題,即使我嘲笑$ log,它也會起作用,因為它不在服務的關閉中。 以下是Angular服務和測試的代碼。 有誰知道如何監視閉包內部的內容?:
角度代碼:
afloatApp.service("WebConfigSettingsService", ['$http', '$q', '$log', function ($http, $q, $log) {
var getConfigSettings = function () {
var deferred = $q.defer();
$http({
method: 'GET',
url: '/api/SOMEPATH'
}).success(function (data, status, headers, config) {
deferred.resolve(data);
}).error(function (data, status, headers, config) {
//THIS IS THE $LOG.ERROR test
$log.error("Error loading WebConfigSettings");
deferred.reject(data);
});
return deferred.promise;
};
var webConfigSettings = getConfigSettings().then(function(data) {
return {
classification: angular.lowercase(data.Classification),
environment: angular.lowercase(data.Environment)
};
});
return webConfigSettings;
}]);
茉莉花測試失敗
describe('WebConfigSettingsService', function () {
var webConfigSettingsService, $httpBackend, mockLog, $q,
urlExpected = "/api/SOMEPATH",
serverData = {
Classification: 'unclassified',
Environment: 'development'
};
beforeEach(module("myApp"));
beforeEach(inject(function (_$httpBackend_, _$log_, _$q_, _WebConfigSettingsService_) {
webConfigSettingsService = _WebConfigSettingsService_;
$httpBackend = _$httpBackend_;
mockLog = _$log_;
spyOn(mockLog, 'error');
$q = _$q_;
$httpBackend.expectGET(urlExpected);
}));
afterEach(function () {
$httpBackend.flush();
$httpBackend.verifyNoOutstandingExpectation();
$httpBackend.verifyNoOutstandingRequest();
});
it("should log error when http errors out", function () {
$httpBackend.whenGET("/api/SOMEPATH").respond(500, "Random Error");
//THIS FAILS. Note that mockLog.error spy is set in before each
expect(mockLog.error).toHaveBeenCalled();
});
});
您沒有在測試中刷新后端。
it("should log error when http errors out", function () {
$httpBackend.whenGET(urlExpected).respond(500, "Random Error");
$httpBackend.flush();
expect(mockLog.error).toHaveBeenCalled();
});
當您添加它時,您將在afterEach中從刷新中得到一個錯誤,因為不應該剩下任何要刷新的內容,請將其取出。 此外,這將導致您的verifyNoOutstandingRequest始終通過。
beforeEach中的期望值是什么? 似乎不需要。
順便說一句,$ log已經被angular-mocks嘲笑了,在這里看看更多細節: https : //docs.angularjs.org/api/ngMock/service/ $ log
您可以刪除間諜並執行以下操作:
it("should log error when http errors out", function () {
$httpBackend.whenGET(urlExpected).respond(500, "Random Error");
$httpBackend.flush();
expect(mockLog.error.logs).toContain(["Error loading WebConfigSettings"]);
});
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