diff --git a/tests/MappableTest.php b/tests/MappableTest.php
index d1c6570..8be150f 100644
--- a/tests/MappableTest.php
+++ b/tests/MappableTest.php
@@ -36,6 +36,20 @@ public function mapped_select()
         $this->assertEquals($sql, $query->toSql());
     }
 
+    /**
+     * @test
+     */
+    public function mapped_groupBy()
+    {
+        $sql = 'select count(*) as aggregate from "users" '.
+                'group by "profile"."first_name", "profile"."age", "ign"';
+
+        $model = $this->getModel();
+        $model->getConnection()->shouldReceive('select')->once()->with($sql, [], m::any())->andReturn([]);
+
+        $model->groupBy('first_name', 'age', 'nick')->count();
+    }
+
     /**
      * @test
      *