优化结构

internal/data/system/version_test.go

@@ -0,0 +1,24 @@
+package system
+
+import (
+	"context"
+	"testing"
+)
+
+func TestVersionRepositoryPreservesNullableFields(t *testing.T) {
+	data := newTransactionTestData(t)
+	ctx := context.Background()
+	if err := data.gormDB.WithContext(ctx).Exec(
+		"INSERT INTO sys_versions (created_at, updated_at, version_name, version_code, description, version_data) VALUES (CURRENT_TIMESTAMP, CURRENT_TIMESTAMP, NULL, NULL, NULL, NULL)",
+	).Error; err != nil {
+		t.Fatal(err)
+	}
+
+	value, err := (&versionRepo{data: data}).FindVersion(ctx, 1)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if value.Name != nil || value.Code != nil || value.Description != nil || value.Data != nil {
+		t.Fatalf("nullable version fields = %#v/%#v/%#v/%#v, want nil", value.Name, value.Code, value.Description, value.Data)
+	}
+}