Javascript 单元测试AngularJS服务？

嘿，我的测试服务需要帮助。

我有这个服务：MyService.js

和此控制器：

angular.module('MyControllers', [])

.controller('MyCtrl2', ['$scope', 'FnEncode', function ($scope, FnEncode) {

        $scope.encoded1 = "";
        $scope.encoded2 = "";
        $scope.encoded3 = "";

        $scope.encode1 = function() {
            $scope.encoded1 = FnEncode.encodeUUI(FnEncode.encodeFunctionalNumber($scope.numberToEncode));
        };

        $scope.encode2 = function() {
            $scope.encoded2 = FnEncode.encodeUUI(FnEncode.encodeFunctionalNumber($scope.numberToEncode)+
                FnEncode.encode2($scope.EncodeWith2));
        };

        $scope.encode3 = function() {
            $scope.encoded3 = FnEncode.encodeUUI(FnEncode.encodeFunctionalNumber($scope.numberToEncode)+
                FnEncode.encode3($scope.EncodeWith3));
        };
    }]);

'use strict';

describe('My services', function() {

    beforeEach(module('myApp'));

    beforeEach(module('MyServices'));

    describe('MyCtrl2', function() {

       var scope, ctrl;
        beforeEach(inject(function($rootScope, $controller) {
            scope = $rootScope.$new();
            ctrl = $controller('MyCtrl2', {$scope: scope});
        }));

        it('should output: ', function(scope) {
            expect(scope.encoded1.toBe("00050221F3"));     
        });
    });
});

当我在文本字段中输入123时，该服务基本上是这样做的，它输出我00050221F3，其中前00是encodeUUI。 我确实测试了类似的内容，但它显示无法读取属性encoded1:

angular.module('MyControllers', [])

.controller('MyCtrl2', ['$scope', 'FnEncode', function ($scope, FnEncode) {

        $scope.encoded1 = "";
        $scope.encoded2 = "";
        $scope.encoded3 = "";

        $scope.encode1 = function() {
            $scope.encoded1 = FnEncode.encodeUUI(FnEncode.encodeFunctionalNumber($scope.numberToEncode));
        };

        $scope.encode2 = function() {
            $scope.encoded2 = FnEncode.encodeUUI(FnEncode.encodeFunctionalNumber($scope.numberToEncode)+
                FnEncode.encode2($scope.EncodeWith2));
        };

        $scope.encode3 = function() {
            $scope.encoded3 = FnEncode.encodeUUI(FnEncode.encodeFunctionalNumber($scope.numberToEncode)+
                FnEncode.encode3($scope.EncodeWith3));
        };
    }]);

'use strict';

describe('My services', function() {

    beforeEach(module('myApp'));

    beforeEach(module('MyServices'));

    describe('MyCtrl2', function() {

       var scope, ctrl;
        beforeEach(inject(function($rootScope, $controller) {
            scope = $rootScope.$new();
            ctrl = $controller('MyCtrl2', {$scope: scope});
        }));

        it('should output: ', function(scope) {
            expect(scope.encoded1.toBe("00050221F3"));     
        });
    });
});

---

我希望有人能告诉我哪里做错了？

如果调用函数不是为了对值进行编码，请尝试：

it('should output: ', function() {
     scope.numberToEncode = "123";
     scope.encode1();
     expect(scope.encoded1.toBe("00050221F3"));     
});

然而，这不是我们应该如何对服务进行单元测试。为了对服务进行单元测试，我们分别测试服务的每个功能

这种验证

scope.encode1

功能的测试也不正确。我们应该模拟

FnEncode

，并验证

FnEncode

的函数是按预期顺序调用的

要测试您的服务，您应该执行以下操作：

'use strict';

describe('My services', function() {

    beforeEach(module('myApp'));

    beforeEach(module('MyServices'));

    describe('MyCtrl2', function() {

        var encode;
        beforeEach(inject(function(FnEncode) {
            encode = FnEncode; //inject your service and store it in a variable
        }));

        //Write test for each of the service's functions

        it('encode Functional Number: ', function() {
            var encodedValue = encode.encodeFunctionalNumber("123");
            expect(encodedValue).toBe("00050221F3");  //replace 00050221F3 with your expected value
        });

        it('encode UUI: ', function() {
            var encodedValue = encode.encodeUUI("123");
            expect(encodedValue).toBe("00050221F3");  //replace 00050221F3 with your expected value
        });
    });
});

---

为什么要使用$scope.encoded1和$scope.encode1？您可以使用$scope.encode1，让函数返回encodeUUI（）的结果，而不是将其分配给encoded1。谢谢！！！！它起作用了。我刚刚更改了中的最后一行：expect（encode.encodeUUI（encodedValue））.toBe（“00050221F3”）；