diff --git a/bower.json b/bower.json
index 8b02643..b01f91e 100644
--- a/bower.json
+++ b/bower.json
@@ -9,6 +9,7 @@
   },
   "main": "./src/http-auth-interceptor.js",
   "dependencies": {
-    "angular": "^1.2"
+    "angular": "^1.2",
+    "angular-mocks": "^1.2.16"
   }
 }
diff --git a/package.json b/package.json
new file mode 100644
index 0000000..a79682b
--- /dev/null
+++ b/package.json
@@ -0,0 +1,18 @@
+{
+  "name": "http-auth-interceptor",
+  "description": "HTTP Authentication helper for angularjs",
+  "repository": "https://github.com/witoldsz/angular-http-auth",
+  "license": "MIT",
+  "devDependencies": {
+    "karma": "~0.10",
+    "bower": "^1.3.1",
+    "karma-junit-reporter": "^0.2.2"
+  },
+  "scripts": {
+    "postinstall": "bower install",
+
+    "pretest": "npm install",
+    "test": "karma start spec/karma.conf.js",
+    "test-single-run": "karma start spec/karma.conf.js  --single-run"
+  }  
+}
diff --git a/spec/http-auth-interceptor.js b/spec/http-auth-interceptor.js
new file mode 100644
index 0000000..5cd8397
--- /dev/null
+++ b/spec/http-auth-interceptor.js
@@ -0,0 +1,73 @@
+'use strict';
+
+describe('http auth interceptor', function() {
+
+  var authService, $httpBackend, $http, $scope;
+  var methods = ['GET', 'POST', 'UPDATE', 'DELETE'];
+
+  beforeEach(function() {
+    // Load http-auth-interceptor module
+    module('http-auth-interceptor');
+  });
+  
+  beforeEach(function() {
+    // Get services and make them available
+    inject(function(_authService_, _$httpBackend_, _$http_, _$rootScope_) {
+      authService = _authService_;
+      $httpBackend = _$httpBackend_;
+      $http = _$http_;
+      $scope = _$rootScope_;
+    });
+    
+    // Spy on $emit to detect events
+    spyOn($scope, '$broadcast');  
+  });
+
+  describe('events', function() {
+  
+    it('should broadcast "event:auth-loginRequired" on http 401 respones and "event:auth-loginConfirmed" after calling loginConfirmed', function() {
+      angular.forEach(methods, function(method) {
+        // require authentication (http 401)
+        $httpBackend.expect(method, '/myresource').respond(401);
+        $http({method: method, url: '/myresource'});
+        $httpBackend.flush();
+        expect($scope.$broadcast).toHaveBeenCalledWith('event:auth-loginRequired', jasmine.any(Object));        
+        $scope.$broadcast.reset();
+        
+        // confirm auth
+        $httpBackend.expect(method, '/myresource').respond(200);
+        authService.loginConfirmed();
+        expect($scope.$broadcast).toHaveBeenCalledWith('event:auth-loginConfirmed', undefined);        
+      });
+    });
+
+    it('should broadcast "event:auth-loginRequired" on http 401 respones and "event:auth-loginCancelled" after calling loginConfirmed', function() {
+      angular.forEach(methods, function(method) {
+        // require authentication (http 401)
+        $httpBackend.expect(method, '/myresource').respond(401);
+        $http({method: method, url: '/myresource'});
+        $httpBackend.flush();
+        expect($scope.$broadcast).toHaveBeenCalledWith('event:auth-loginRequired', jasmine.any(Object));        
+        $scope.$broadcast.reset();
+        
+        // confirm auth
+        authService.loginCancelled();
+        expect($scope.$broadcast).toHaveBeenCalledWith('event:auth-loginCancelled', undefined);        
+      });
+    });
+    
+    it('should not broadcast any event on responses other than 401', function() {
+      // most of the following tests don't make sense, but they also don't hurt
+      for(status = 100; status <= 599; status++) {
+        angular.forEach(methods, function(method) {
+          $httpBackend.expect(method, '/myresource').respond(status);
+          $http({method: method, url: '/myresource'});
+          $httpBackend.flush();
+          expect($scope.$broadcast).not.toHaveBeenCalled();
+        });
+      }
+    });
+  
+  });
+
+});
diff --git a/spec/karma.conf.js b/spec/karma.conf.js
new file mode 100644
index 0000000..fd946c4
--- /dev/null
+++ b/spec/karma.conf.js
@@ -0,0 +1,29 @@
+module.exports = function(config) {
+    config.set({
+        basePath: '../',
+
+        files: [
+            'bower_components/angular/angular.js',
+            'bower_components/angular-mocks/angular-mocks.js',
+            'src/http-auth-interceptor.js',
+            'spec/*.js'
+        ],
+
+        autoWatch: true,
+
+        frameworks: ['jasmine'],
+
+        browsers: ['PhantomJS'],
+
+        plugins: [
+            'karma-jasmine',
+            'karma-phantomjs-launcher'
+        ],
+
+        junitReporter: {
+            outputFile: 'test_out/unit.xml',
+            suite: 'unit'
+        }
+
+    })
+}