fix(test): use plain gorm connection to avoid tracing output in Example tests

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: dorothyyzh

go.mod

@@ -11,6 +11,7 @@ require (
 	github.com/stretchr/testify v1.11.1
 	github.com/testcontainers/testcontainers-go/modules/redis v0.42.0
 	golang.org/x/sync v0.20.0
+	gorm.io/driver/postgres v1.6.0
 	gorm.io/gorm v1.31.1
 )
 
@@ -131,5 +132,4 @@ require (
 	gopkg.in/yaml.v3 v3.0.1 // indirect
 	gorm.io/datatypes v1.2.7 // indirect
 	gorm.io/driver/mysql v1.5.6 // indirect
-	gorm.io/driver/postgres v1.6.0 // indirect
 )

ratelimiter_test.go

@@ -15,6 +15,7 @@ import (
 	"github.com/theplant/ratelimiter"
 	"github.com/theplant/ratelimiter/redisrl"
 	"github.com/theplant/ratelimiter/sqlrl"
+	"gorm.io/driver/postgres"
 	"gorm.io/gorm"
 )
 
@@ -48,7 +49,11 @@ func TestMain(m *testing.M) {
 		panic(fmt.Errorf("failed to get redis connection string: %w", err))
 	}
 
-	db = testSuite.DB()
+	// Use a plain gorm connection without tracing to avoid polluting Example test output
+	db, err = gorm.Open(postgres.Open(testSuite.DSN()), &gorm.Config{})
+	if err != nil {
+		log.Fatalf("Failed to open plain DB: %v", err)
+	}
 	redisCli = redis.NewClient(&redis.Options{
 		Addr: strings.TrimPrefix(endpoint, "redis://"),
 	})