Question

我有使用隔离范围和控制器的指令，是否正确编写指令的单元测试并在控制器范围内测试某些功能？

如果是的话，我怎样才能访问控制器范围？

   angular.module('myApp').directive('myDirecive', function () {
        return {
            templateUrl: 'template.html',
            scope: {
                data: '='
            },

            controller: function ($scope) {
                $scope.f= function () {
                    $scope.value = true;
                };
            },

            link: function ($scope) {
              // some logic
            });
            }
        };
    })

    describe('myDirective', function () {
        'use strict';

        var element,
            $compile,
            $rootScope,
            $scope;

        beforeEach(module('myApp'));

        beforeEach(inject(function (_$compile_, _$rootScope_) {
            $compile = _$compile_;
            $rootScope = _$rootScope_;
            $scope = $rootScope.$new();

            element = compileElement();
        }));

        function compileElement() {
            var element = angular.element('<my-directive></my-directive>');
            var compiledElement = $compile(element)($scope);

            $scope.$digest();

            return compiledElement;
        }

        it('should execute f', function () {
            $scope.f();
            expect($scope.val).toBe(true); // there we can access to isolate scope from directive;
        });
    });

Answer 1

控制器被赋予指令创建的隔离范围。您传递给编译函数的$scope用作指令的隔离范围的父级。

回答如何测试它，你有两个选择：

从元素中访问隔离范围：

var isolated = element.isolateScope();

为此，您需要$compileProvider.debugInfoEnabled(true);
从您的范围访问隔离范围：

var isolated = $scope.childHead;

Answer 2

试试这个

first initialize string reversed with empty string i.e string reversed="";
after this change for loop:
for(int i=0;i<length;i++)
{
   reversed+=for_reversal[length-1-i];
   cout << for_reversal[length-i] << endl;
}
int r_length=reversed.length();
cout << "reversed string length : " << r_length << endl;
cout << "Reversed string is : " << reversed << endl;

看看这个Article

在使用隔离范围测试指令时如何访问控制器范围

2 个答案: