diff --git a/tests/test-server/controllers/auth.php b/tests/test-server/controllers/auth.php
index 011a2cf..208fb71 100644
--- a/tests/test-server/controllers/auth.php
+++ b/tests/test-server/controllers/auth.php
@@ -109,4 +109,4 @@ private function respond4CommonErrors($indicator) {
 }
 
 $ctrl = new AuthController;
-$ctrl->handle();
\ No newline at end of file
+$ctrl->handle();
diff --git a/tests/test-server/controllers/tunnel-get-wsurl.php b/tests/test-server/controllers/tunnel-get-wsurl.php
index 78e737d..39fe66d 100644
--- a/tests/test-server/controllers/tunnel-get-wsurl.php
+++ b/tests/test-server/controllers/tunnel-get-wsurl.php
@@ -9,4 +9,4 @@
         'connectUrl' => 'wss://ws.qcloud.com/ws/tunnel1',
     ), JSON_UNESCAPED_UNICODE),
     'signature' => 'fake_signature',
-));
\ No newline at end of file
+));
diff --git a/tests/test-server/controllers/tunnel-ws-push.php b/tests/test-server/controllers/tunnel-ws-push.php
index e9ce1c4..b9669fd 100644
--- a/tests/test-server/controllers/tunnel-ws-push.php
+++ b/tests/test-server/controllers/tunnel-ws-push.php
@@ -28,4 +28,4 @@
         'message' => 'OK',
         'data' => array(),
     ));
-}
\ No newline at end of file
+}