Test Case File

describe('homeController', function() {
beforeEach(module('moduleInjectionApp'));

var $controller;
var $rootScope;
beforeEach(inject(function(_$controller_, _$rootScope_) {
    $controller = _$controller_('homeController', {'$scope': scope});
    $rootScope = _$rootScope_;
}));

describe('$scope.ID', function() {
    it('Check the scope object', function() {
        var $scope = {};
        expect($scope.ID).toEqual(5);
    });
  });
});

Controller File

 angular.module('moduleInjectionApp').controller('homeController', homeController)
 homeController.$inject = ["$scope", "$rootScope", "$location"];
 function homeController($scope, $rootScope, $location) {
     console.log("entered homeController")
     $scope.ID = 5;
     $rootScope.loginObj = JSON.parse(localStorage.getItem('login_data'));
 }

Error

Error: Expected undefined to equal 5.
        at <Jasmine>
        at UserContext.<anonymous> (WebContent/test/home/homeSpec.js:14:31)
        at <Jasmine>

Chrome 75.0.3770 (Windows 10.0.0): Executed 1 of 1 (1 FAILED) (0.036 secs / 0.012 secs) TOTAL: 1 FAILED, 0 SUCCESS

Test Case File

describe('homeController', function() {
beforeEach(module('moduleInjectionApp'));

var $controller;
var $rootScope;
beforeEach(inject(function(_$controller_, _$rootScope_) {
    $controller = _$controller_('homeController', {'$scope': scope});
    $rootScope = _$rootScope_;
}));

describe('$scope.ID', function() {
    it('Check the scope object', function() {
        var $scope = {};
        expect($scope.ID).toEqual(5);
    });
  });
});

Controller File

 angular.module('moduleInjectionApp').controller('homeController', homeController)
 homeController.$inject = ["$scope", "$rootScope", "$location"];
 function homeController($scope, $rootScope, $location) {
     console.log("entered homeController")
     $scope.ID = 5;
     $rootScope.loginObj = JSON.parse(localStorage.getItem('login_data'));
 }

Error

Error: Expected undefined to equal 5.
        at <Jasmine>
        at UserContext.<anonymous> (WebContent/test/home/homeSpec.js:14:31)
        at <Jasmine>

Chrome 75.0.3770 (Windows 10.0.0): Executed 1 of 1 (1 FAILED) (0.036 secs / 0.012 secs) TOTAL: 1 FAILED, 0 SUCCESS

• javascript
• angularjs
• unit-testing
• jasmine
• karma-jasmine

• I think scope variable is not accessible from controller file to test case file. Please tell me if i'm doing it in wrong way. – ANKIT DHORELIYA Commented Feb 14, 2020 at 7:21
• You declared var $scope = {} , how can you expect the ID to get created when you initialized it as empty object – Shashank Vivek Commented Feb 14, 2020 at 8:25
• Ok. So now i have changed it like var scope; – ANKIT DHORELIYA Commented Feb 14, 2020 at 9:57
• but still getting same error. – ANKIT DHORELIYA Commented Feb 14, 2020 at 9:58
• Take a look at my answer and let me know your if it helped. \ – Shashank Vivek Commented Feb 14, 2020 at 10:32

1 Answer 1

Try

describe('homeController', function() {
    beforeEach(module('moduleInjectionApp'));

    var $controller;

    beforeEach(inject(function(_$controller_){
              $controller = _$controller_;
    }));

    describe('$scope.ID', function() {
        it('Check the scope object', function() {
            var $scope = {};
            var controller = $controller('homeController', { $scope: $scope });
            expect($scope.ID).toEqual(5);
        });
    });
});

When you declare var $scope = {};, you will always get $scope.ID as undefined. You need to do

var $scope = { ID: 5}

Anyways, in unit test, you dont create some values and then expect assertions on it. You validate the values which are already defined or have been modified. Here you were trying to declare and then putting expect (which will always pass)