diff --git a/tests/seeders/PostSeeder.php b/tests/seeders/PostSeeder.php
index 9679bce..5dba34d 100644
--- a/tests/seeders/PostSeeder.php
+++ b/tests/seeders/PostSeeder.php
@@ -10,6 +10,7 @@ public function run()
         Post::unguard();
         Post::create(['id' => 1, 'title' => 'First post', 'body' => 'This is the first post!']);
         Post::create(['id' => 2, 'title' => 'Second post', 'body' => 'This is the second post!']);
+        Post::create(['id' => 3, 'title' => 'Third post', 'body' => 'This is the third post!']);
         Post::reguard();
     }
 
diff --git a/tests/seeders/RatingsSeeder.php b/tests/seeders/RatingsSeeder.php
index f6b4ab4..7ecd6a5 100644
--- a/tests/seeders/RatingsSeeder.php
+++ b/tests/seeders/RatingsSeeder.php
@@ -12,6 +12,7 @@ public function run()
 
         $post1 = Post::find(1);
         $post2 = Post::find(2);
+        $post3 = Post::find(3);
         $user1 = User::find(1);
         $user2 = User::find(2);
 
diff --git a/tests/suite/Post/PostRelationsTest.php b/tests/suite/Post/PostRelationsTest.php
index 4eae8e5..0960534 100644
--- a/tests/suite/Post/PostRelationsTest.php
+++ b/tests/suite/Post/PostRelationsTest.php
@@ -46,4 +46,28 @@ public function testRatingsRatingPercent()
         // should drop to 30%
         $this->assertEquals(30, $post2->ratingPercent(10));
     }
+
+    public function testPlusOneStyleRatings()
+    {
+        $post = Post::find(3);
+
+        $this->assertEquals(0, $post->sumRating);
+        $this->assertEquals(0, $post->sumRating());
+
+        $rating = new willvincent\Rateable\Rating;
+        $rating->rating = 1;
+        $rating->user_id = 1;
+        $post->ratings()->save($rating);
+
+        $this->assertEquals(1, $post->sumRating);
+        $this->assertEquals(1, $post->sumRating());
+
+        $rating = new willvincent\Rateable\Rating;
+        $rating->rating = -1;
+        $rating->user_id = 2;
+        $post->ratings()->save($rating);
+
+        $this->assertEquals(0, $post->sumRating);
+        $this->assertEquals(0, $post->sumRating());
+    }
 }