amend($ionicConfigProvider): fix typo, add unit tests

js/angular/service/ionicConfig.js

@@ -25,7 +25,7 @@ IonicModule
   /**
    * @ngdoc method
    * @name $ionicConfigProvider#prefetchTemplates
-   * @description Set whether Ionic should prefetch all templateUrls defined in 
+   * @description Set whether Ionic should prefetch all templateUrls defined in
    * $stateProvider.state. Default true. If set to false, the user will have to wait
    * for a template to be fetched the first time he/she is going to a a new page.
    * @param shouldPrefetch Whether Ionic should prefetch templateUrls defined in
@@ -34,9 +34,9 @@ IonicModule
    */
   this.prefetchTemplates = function(newValue) {
     if (arguments.length) {
-      config.prefetchTemlates = newValue;
+      config.prefetchTemplates = newValue;
     }
-    return config.prefetchTemlates;
+    return config.prefetchTemplates;
   };
 
   // private: Service definition for internal Ionic use

test/unit/angular/service/ionicConfig.unit.js

@@ -0,0 +1,22 @@
+describe('$ionicConfigProvider', function() {
+
+  it('should give default true', function() {
+    module('ionic', function($ionicConfigProvider) {
+      expect($ionicConfigProvider.prefetchTemplates()).toBe(true);
+    });
+    inject(function($ionicConfig) {
+      expect($ionicConfig.prefetchTemplates).toBe(true);
+    });
+  });
+
+  it('should allow setting', function() {
+    module('ionic', function($ionicConfigProvider) {
+      $ionicConfigProvider.prefetchTemplates(false);
+      expect($ionicConfigProvider.prefetchTemplates()).toBe(false);
+    });
+    inject(function($ionicConfig) {
+      expect($ionicConfig.prefetchTemplates).toBe(false);
+    });
+  });
+
+});