Sub2API v1.0 - AI API 网关（二开初始版本，基于上游 Wei-Shaw/sub2api）

backend/internal/service/auth_service_test.go

@@ -0,0 +1,13 @@
+package service
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/require"
+)
+
+func TestIsReservedEmail_DingTalkDomain(t *testing.T) {
+	require.True(t, isReservedEmail("dingtalk-123@dingtalk-connect.invalid"))
+	require.True(t, isReservedEmail("DINGTALK-456@DINGTALK-CONNECT.INVALID")) // case-insensitive
+	require.False(t, isReservedEmail("real@dingtalk.com"))
+}