angularjs - Angular 单元测试未知提供商 : $scopeProvider

Question

您好，我正在使用 Jasmine 编写第一个 Angular 测试，但我不断收到错误

------ 测试开始:文件:C:\Users\Regan\Documents\Visual Studio 2013\WebSites\Regan\testApp\TestProject\ng-tests\MainCtrlSpec.js ------测试“带有内联模拟的 MainCtrl:应该有​​标签”失败 错误:[$injector:unpr] 未知提供程序:$scopeProvider <- $scope <- MainCtrl

我尝试过使用它，但卡住了。如果您发现问题，请告诉我。如果您还需要更多代码，请告诉我，但我认为问题出在这两个文件中。

MainCtrlSvc.js

/// <reference path="../../Scripts/angular/angular.js" />
/// <reference path="../../Scripts/angular/angular-mocks.js" />
/// <reference path="../../Scripts/chartjs/Chart.js" />
/// <reference path="../../Scripts/angular-chart.js-master/dist/angular-chart.js" />
/// <reference path="../../Scripts/controller/main-controller.js" />
/// <reference path="../../Scripts/service/data-service.js" />
/// <reference path="../../libs/jasmine/jasmine.js" />

describe("MainCtrl with inline mock", function () {
    beforeEach(module("ChartApp"));

    var ctrl, mockDataSrv;

    beforeEach(module(function($provide) {
        mockDataSrv = {
            labels: ["Reading", "Coding", "Thinking About Coding", "Reddit", "StackOverflow"],
            data: [500, 300, 300, 40, 220],
            type: "PolarArea",
            title: "Angular Chart Expriment"
        };
        $provide.value("DataSrv", mockDataSrv);
    }));

    beforeEach(inject(function ($controller) {
        ctrl = $controller("MainCtrl");
    }));

    it("should have lables", function () {
        expect(scope.labels).toBeDefined();
    });
});

MainCtrl.js

var app = angular.module("ChartApp", ["chart.js"]);

    app.controller("MainCtrl", ["$scope",
      function ($scope, DataSrv) {
          $scope.labels = DataSrv.labels;
          $scope.data = DataSrv.data;
          $scope.type = DataSrv.type;
          $scope.title = DataSrv.title;
      }
    ]);

Answer 1

由于没有 $scope 服务，$controller 提供程序无法实例化注入(inject)的 $scope 参数。

您需要在使用 $controller 提供程序实例化 Controller 时提供作用域。您可以在setUp中注入(inject)$rootScope，并且可以通过执行$rootScope.$new()来获取子作用域。将其作为参数注入(inject)到 $controller 构造函数中。即 $controller("MainCtrl", {$scope:scope }) 其中，scope 是新的子范围，即使您可以传入 $rootScope。

即

   var ctrl, mockDataSrv, scope;
    //... Your code
    //...
    beforeEach(inject(function ($controller, $rootScope) {
        scope = $rootScope.$new(); //get a childscope
        ctrl = $controller("MainCtrl", {$scope:scope }); //Pass it as argument as $scope's value
    }));