diff --git a/internal/msggateway/encoder_test.go b/internal/msggateway/encoder_test.go
new file mode 100644
index 000000000..da77763ca
--- /dev/null
+++ b/internal/msggateway/encoder_test.go
@@ -0,0 +1,48 @@
+package msggateway
+
+import (
+	"testing"
+)
+
+func TestGobEncoder_Encode(t *testing.T) {
+	encoder := NewGobEncoder()
+
+	// 测试用例1: 编码 []byte 数据
+	inputData := []byte("test data")
+	encodedData, err := encoder.Encode(inputData)
+	if err != nil {
+		t.Fatalf("expected no error, got %v", err)
+	}
+	if string(encodedData) != string(inputData) {
+		t.Fatalf("expected encoded data to be '%s', got '%s'", inputData, encodedData)
+	}
+
+	// 测试用例2: 编码非 []byte 数据
+	nonByteData := "string data"
+	_, err = encoder.Encode(nonByteData)
+	if err == nil {
+		t.Fatalf("expected an error when encoding non-byte data, got none")
+	}
+}
+
+func TestGobEncoder_Decode(t *testing.T) {
+	encoder := NewGobEncoder()
+
+	// 测试用例1: 解码到 []byte 数据
+	encodedData := []byte("test data")
+	var decodedData []byte
+	err := encoder.Decode(encodedData, &decodedData)
+	if err != nil {
+		t.Fatalf("expected no error, got %v", err)
+	}
+	if string(decodedData) != string(encodedData) {
+		t.Fatalf("expected decoded data to be '%s', got '%s'", encodedData, decodedData)
+	}
+
+	// 测试用例2: 解码到非 []byte 数据
+	var nonByteData string
+	err = encoder.Decode(encodedData, &nonByteData)
+	if err == nil {
+		t.Fatalf("expected an error when decoding to non-byte data, got none")
+	}
+}