diff --git a/tests/fuzz/database_test.go_Test_getPostgreSQLConnectionString.go b/tests/fuzz/database_test.go_Test_getPostgreSQLConnectionString.go
new file mode 100644
index 0000000000000..9f77bc0e664ef
--- /dev/null
+++ b/tests/fuzz/database_test.go_Test_getPostgreSQLConnectionString.go
@@ -0,0 +1,65 @@
+// Copyright 2023 The Gitea Authors. All rights reserved.
+// SPDX-License-Identifier: MIT
+
+package fuzz
+
+import (
+	"os"
+	"testing"
+
+	"secsys/gout-transformation/pkg/transstruct"
+	"github.com/stretchr/testify/assert"
+)
+
+func FuzzTest_getPostgreSQLConnectionString(XVl []byte) int {
+	t := &testing.T{}
+	_ = t
+	var skippingTableDriven bool
+	_, skippingTableDriven = os.LookupEnv("SKIPPING_TABLE_DRIVEN")
+	_ = skippingTableDriven
+	transstruct.SetFuzzData(XVl)
+	FDG_FuzzGlobal()
+
+	tests := []struct {
+		Host	string
+		Port	string
+		User	string
+		Passwd	string
+		Name	string
+		Param	string
+		SSLMode	string
+		Output	string
+	}{
+		{
+			Host:		transstruct.GetString("/tmp/pg.sock"),
+			Port:		"4321",
+			User:		transstruct.GetString("testuser"),
+			Passwd:		transstruct.GetString("space space !#$%^^%^```-=?="),
+			Name:		transstruct.GetString("gitea"),
+			Param:		transstruct.GetString(""),
+			SSLMode:	transstruct.GetString("false"),
+			Output:		"postgres://testuser:space%20space%20%21%23$%25%5E%5E%25%5E%60%60%60-=%3F=@:5432/giteasslmode=false&host=/tmp/pg.sock",
+		},
+		{
+			Host:		transstruct.GetString("localhost"),
+			Port:		"1234",
+			User:		transstruct.GetString("pgsqlusername"),
+			Passwd:		transstruct.GetString("I love Gitea!"),
+			Name:		transstruct.GetString("gitea"),
+			Param:		transstruct.GetString(""),
+			SSLMode:	transstruct.GetString("true"),
+			Output:		"postgres://pgsqlusername:I%20love%20Gitea%21@localhost:5432/giteasslmode=true",
+		},
+	}
+
+	for _, test := range tests {
+		connStr := getPostgreSQLConnectionString(test.Host, test.User, test.Passwd, test.Name, test.Param, test.SSLMode)
+		assert.Equal(t, test.Output, connStr)
+	}
+
+	return 1
+}
+
+func FDG_FuzzGlobal() {
+
+}