From b9630ae4189dc4888e43cd5cd76d175e0a4386ef Mon Sep 17 00:00:00 2001
From: Qiu Jian <qiujian@yunionyun.com>
Date: Fri, 14 Nov 2025 15:30:48 +0800
Subject: [PATCH] fix: CamelSplit ignore trailing char

---
 utils/utils.go      |  5 +++++
 utils/utils_test.go | 20 ++++++++++++++++++++
 2 files changed, 25 insertions(+)

diff --git a/utils/utils.go b/utils/utils.go
index 13ab410..fa65eb4 100644
--- a/utils/utils.go
+++ b/utils/utils.go
@@ -61,6 +61,11 @@ func CamelSplitTokens(str string) []string {
 		} else {
 			upperCount = 0
 			split = true
+			// For non-alphanumeric characters at the end of the string,
+			// include them in the current buffer before splitting to preserve them
+			if i == len(str)-1 && len(buf) > 0 {
+				buf = append(buf, c)
+			}
 			inc = false
 		}
 		if split && len(buf) > 0 {
diff --git a/utils/utils_test.go b/utils/utils_test.go
index da39ea5..cff836a 100644
--- a/utils/utils_test.go
+++ b/utils/utils_test.go
@@ -218,3 +218,23 @@ func TestInArray(t *testing.T) {
 		}
 	}
 }
+
+func TestCamelSplit(t *testing.T) {
+	cases := []struct {
+		in   string
+		want string
+	}{
+		{"TEST", "test"},
+		{"GPUTestScore", "gpu_test_score"},
+		{"UserName", "user_name"},
+		{"AuthURL", "auth_url"},
+		{"ID_", "id_"},
+		{"DEPLOYMENT_ID_", "deployment_id_"},
+	}
+	for _, c := range cases {
+		got := CamelSplit(c.in, "_")
+		if got != c.want {
+			t.Errorf("CamelSplit(%s) = %s, want %s", c.in, got, c.want)
+		}
+	}
+}