add exception spec

Author: bugthesystem

app/common/exception.js

@@ -1,9 +1,7 @@
-
 export default function exception(logger) {
-    var service = {
-        catcher: catcher
+    return {
+        catcher
     };
-    return service;
 
     function catcher(message) {
         return function (reason) {

tests/common/exception.spec.js

@@ -0,0 +1,39 @@
+describe('exception', ()=> {
+
+    let exceptionInstance, loggerMock;
+
+    beforeEach(()=> {
+        angular.mock.module(function ($provide) {
+            $provide.service('logger', function () {
+                this.error = jasmine.createSpy('error');
+            });
+        });
+
+        angular.mock.module('espackApp');
+    });
+
+    describe('#ctor', ()=> {
+
+        beforeEach(()=> {
+            _inject();
+        });
+
+        it('should exist', ()=> {
+            expect(!!exceptionInstance).toBe(true);
+        });
+
+        it('should define catcher property', function () {
+
+            expect(exceptionInstance.catcher).toBeDefined();
+            expect(typeof exceptionInstance.catcher).toBe('function');
+        });
+
+    });
+
+    function _inject() {
+        inject((exception, logger) => {
+            loggerMock = logger;
+            exceptionInstance = exception;
+        });
+    }
+});