fix(service): partial loader service refetches list of parts

Ensures that the partial loader service refetches the list of parts when its promise resolves in case the list of parts have changed in the intervening time

Fixes #1326

src/service/loader-partial.js

@@ -307,6 +307,7 @@ function $translatePartialLoader() {
       return $q.all(loaders)
         .then(function() {
           var table = {};
+          prioritizedParts = getPrioritizedParts();
           angular.forEach(prioritizedParts, function(part) {
             deepExtend(table, part.tables[options.key]);
           });

test/unit/service/loader-partial.spec.js

@@ -868,6 +868,61 @@ describe('pascalprecht.translate', function() {
         $httpBackend.flush();
       });
     });
+
+    it('should handle the parts being resolve out of the order which they were called', function() {
+      var $q,
+        requests = [];
+
+      module(function($provide) {
+        $provide.value('$http', function() {
+          var request = $q.defer();
+
+          requests.push(request);
+
+          return request.promise;
+        });
+      });
+
+      inject(function($translatePartialLoader, _$q_, $rootScope) {
+        var table;
+
+        $q = _$q_;
+
+        $translatePartialLoader.addPart('part1');
+        $translatePartialLoader.addPart('part2');
+        $translatePartialLoader({
+          key : 'en',
+          urlTemplate : '/locales/{part}-{lang}.json'
+        }).then(function(data) {
+          table = data;
+        }, function() {
+          table = {};
+        });
+
+        $translatePartialLoader.addPart('part3');
+        $translatePartialLoader({
+          key : 'en',
+          urlTemplate : '/locales/{part}-{lang}.json'
+        }).then(function(data) {
+          table = data;
+        }, function() {
+          table = {};
+        });
+
+        requests[2].resolve({data: {key1: 'value1'}});
+        requests[3].resolve({data: {key2: 'value2'}});
+        requests[4].resolve({data: {key3: 'value3'}});
+        $rootScope.$digest();
+
+        requests[0].resolve({data: {key1: 'value1'}});
+        requests[1].resolve({data: {key2: 'value2'}});
+        $rootScope.$digest();
+
+        expect(table.key1).toEqual('value1');
+        expect(table.key2).toEqual('value2');
+        expect(table.key3).toEqual('value3');
+      });
+    });
   });
 
 });