test/unit/angularjs/rails/extensions/snapshotsSpec.js in angularjs-rails-resource-1.1.1 vs test/unit/angularjs/rails/extensions/snapshotsSpec.js in angularjs-rails-resource-1.2.0

@@ -346,9 +346,34 @@
         expect(book.$key).toBe('1234');
         expect(firstCallbackCalled).toBe(true);
         expect(secondCallbackCalled).toBe(true);
     });
 
+    it('should detect unsnapped changes', function () {
+        var book, data = {id: 1, $key: '1234', name: 'The Winds of Winter', theAuthor: 'George R.R. Martin'};
+        book = new Book(data);
+        expect(book.unsnappedChanges()).toBe(true);
+
+        book.snapshot();
+        expect(book.unsnappedChanges()).toBe(false);
+
+        book.name = 'Harry Potter';
+        expect(book.unsnappedChanges()).toBe(true);
+
+        book.snapshot();
+        expect(book.unsnappedChanges()).toBe(false);
+
+        book.theAuthor = 'J.K. Rowling';
+        expect(book.unsnappedChanges()).toBe(true);
+
+        book.snapshot();
+        expect(book.unsnappedChanges()).toBe(false);
+
+        // angular.equals ignores $-prefixed properties
+        book.$key = '1235'
+        expect(book.unsnappedChanges()).toBe(false);
+    });
+
     describe('serializer', function () {
         beforeEach(function () {
             Book.configure({
                 serializer: railsSerializer(function () {
                     this.exclude('author');
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