From e248a26eea971997ea4eb3ef9bacb00e369f2dea Mon Sep 17 00:00:00 2001
From: rebelice <yangrebelice@gmail.com>
Date: Fri, 2 Apr 2021 07:51:24 +0800
Subject: [PATCH] config: add a test for `config.toml.example` (#23766)

---
 config/config_test.go | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/config/config_test.go b/config/config_test.go
index 25fea0d1c0..caeb8ef7e4 100644
--- a/config/config_test.go
+++ b/config/config_test.go
@@ -596,3 +596,17 @@ func (s *testConfigSuite) TestTcpNoDelay(c *C) {
 	//check default value
 	c.Assert(c1.Performance.TCPNoDelay, Equals, true)
 }
+
+func (s *testConfigSuite) TestConfigExample(c *C) {
+	conf := NewConfig()
+	_, localFile, _, _ := runtime.Caller(0)
+	configFile := filepath.Join(filepath.Dir(localFile), "config.toml.example")
+	metaData, err := toml.DecodeFile(configFile, conf)
+	c.Assert(err, IsNil)
+	keys := metaData.Keys()
+	for _, key := range keys {
+		for _, s := range key {
+			c.Assert(ContainHiddenConfig(s), IsFalse)
+		}
+	}
+}