Add test

Author: tadcka

test/Gitlab/Tests/Api/MergeRequestsTest.php

@@ -191,6 +191,21 @@ public function shouldGetMergeRequestNotes()
         $this->assertEquals($expectedArray, $api->showNotes(1, 2));
     }
 
+    /**
+     * @test
+     */
+    public function shouldRemoveMergeRequestNote()
+    {
+        $expectedBool = true;
+
+        $api = $this->getApiMock();
+        $api->expects($this->once())
+            ->method('delete')
+            ->with('projects/1/merge_requests/2/notes/1')
+            ->will($this->returnValue($expectedBool));
+        $this->assertEquals($expectedBool, $api->removeNote(1, 2, 1));
+    }
+
     /**
      * @test
      */