diff --git a/t/plugin/basic-auth-anonymous-consumer.t b/t/plugin/basic-auth-anonymous-consumer.t
index 13ee2117d9e1..7708451f4d82 100644
--- a/t/plugin/basic-auth-anonymous-consumer.t
+++ b/t/plugin/basic-auth-anonymous-consumer.t
@@ -132,7 +132,7 @@ passed
     location /t {
         content_by_lua_block {
             local t = require("lib.test_admin").test
-            
+
             for i = 1, 5, 1 do
                 local code, body = t('/hello',
                     ngx.HTTP_GET,
diff --git a/t/plugin/jwt-auth-anonymous-consumer.t b/t/plugin/jwt-auth-anonymous-consumer.t
index de150228038d..7b8b142c8579 100644
--- a/t/plugin/jwt-auth-anonymous-consumer.t
+++ b/t/plugin/jwt-auth-anonymous-consumer.t
@@ -132,7 +132,7 @@ passed
     location /t {
         content_by_lua_block {
             local t = require("lib.test_admin").test
-            
+
             for i = 1, 5, 1 do
                 local code, body = t('/hello',
                     ngx.HTTP_GET,
diff --git a/t/plugin/key-auth-anonymous-consumer.t b/t/plugin/key-auth-anonymous-consumer.t
index 76bad0f1104f..744e44760ab9 100644
--- a/t/plugin/key-auth-anonymous-consumer.t
+++ b/t/plugin/key-auth-anonymous-consumer.t
@@ -131,7 +131,7 @@ passed
     location /t {
         content_by_lua_block {
             local t = require("lib.test_admin").test
-            
+
             for i = 1, 5, 1 do
                 local code, body = t('/hello',
                     ngx.HTTP_GET,