Add getSerial function for device plugin

src/mocks/device.js

@@ -13,6 +13,7 @@ ngCordovaMocks.factory('$cordovaDevice', function () {
   var platform = '';
   var uuid = '';
   var version = '';
+  var serial = '';
 
   return {
     /**
@@ -92,6 +93,17 @@ ngCordovaMocks.factory('$cordovaDevice', function () {
      */
     version: version,
 
+    /**
+     @ngdoc property
+     @name serial
+     @propertyOf ngCordovaMocks.cordovaDevice
+
+     @description
+     The serial of the device.
+     This property should only be used in automated tests.
+     */
+    serial: serial,
+
     getDevice: function () {
       return this.device;
     },
@@ -118,6 +130,10 @@ ngCordovaMocks.factory('$cordovaDevice', function () {
 
     getManufacturer: function () {
       return this.manufacturer;
+    },
+
+    getSerial: function () {
+      return this.serial;
     }
   };
 });

src/plugins/device.js

@@ -75,6 +75,14 @@ angular.module('ngCordova.plugins.device', [])
        */
       getManufacturer: function () {
         return device.manufacturer;
+      },
+
+      /**
+       * Returns the device serial.
+       * @returns {String}
+       */
+      getSerial: function () {
+        return device.serial;
       }
     };
   }]);

test/mocks/device.spec.js

@@ -65,5 +65,13 @@ describe('ngCordovaMocks', function() {
       var v = $cordovaDevice.getManufacturer();
       expect(v).toEqual(manufacturer);
     });
+
+    it('should get the serial', function () {
+      var serial = 'FK1RK67XGRY1';
+      $cordovaDevice.serial = serial;
+
+      var v = $cordovaDevice.getSerial();
+      expect(v).toEqual(serial);
+    });
   });
-})
+});

test/plugins/devices.spec.js

@@ -15,7 +15,8 @@ describe('Service: $cordovaDevice', function() {
       platform: 'iOS',
       uuid: 89749382749823749823,
       version: 5,
-      manufacturer: 'apple'
+      manufacturer: 'apple',
+      serial: 'FK1RK67XGRY1'
     };
   }));
 
@@ -51,4 +52,8 @@ describe('Service: $cordovaDevice', function() {
     expect($cordovaDevice.getManufacturer()).toBe(window.device.manufacturer);
   });
 
+  it('should return window.device.serial on getSerial', function() {
+    expect($cordovaDevice.getSerial()).toBe(window.device.serial);
+  });
+
 });