From 789c5de8731fde4c764a75642706038403dc2bb7 Mon Sep 17 00:00:00 2001
From: Joe Bird <shuaiqijianhao@qq.com>
Date: Fri, 2 May 2025 15:54:00 +0800
Subject: [PATCH] fix(marshaler): fix bug when marshal array (#4790)

---
 core/mapping/marshaler.go      |  2 +-
 core/mapping/marshaler_test.go | 12 ++++++++++++
 2 files changed, 13 insertions(+), 1 deletion(-)

diff --git a/core/mapping/marshaler.go b/core/mapping/marshaler.go
index 65d295b1b..797cbdf26 100644
--- a/core/mapping/marshaler.go
+++ b/core/mapping/marshaler.go
@@ -142,7 +142,7 @@ func validateOptional(field reflect.StructField, value reflect.Value) error {
 		if value.IsNil() {
 			return fmt.Errorf("field %q is nil", field.Name)
 		}
-	case reflect.Array, reflect.Slice, reflect.Map:
+	case reflect.Slice, reflect.Map:
 		if value.IsNil() || value.Len() == 0 {
 			return fmt.Errorf("field %q is empty", field.Name)
 		}
diff --git a/core/mapping/marshaler_test.go b/core/mapping/marshaler_test.go
index b09411248..565b146f3 100644
--- a/core/mapping/marshaler_test.go
+++ b/core/mapping/marshaler_test.go
@@ -462,3 +462,15 @@ func TestMarshal_FromString(t *testing.T) {
 	assert.Nil(t, err)
 	assert.Equal(t, "10", m["json"]["age"].(string))
 }
+
+func TestMarshal_Array(t *testing.T) {
+	v := struct {
+		H [1]int `json:"h,string"`
+	}{
+		H: [1]int{1},
+	}
+
+	m, err := Marshal(v)
+	assert.Nil(t, err)
+	assert.Equal(t, "[1]", m["json"]["h"].(string))
+}