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

backend/internal/handler/dto/user_mapper_activity_test.go

@@ -0,0 +1,33 @@
+package dto
+
+import (
+	"testing"
+	"time"
+
+	"github.com/Wei-Shaw/sub2api/internal/service"
+	"github.com/stretchr/testify/require"
+)
+
+func TestUserFromServiceAdmin_MapsActivityTimestamps(t *testing.T) {
+	t.Parallel()
+
+	lastLoginAt := time.Date(2026, time.April, 20, 10, 0, 0, 0, time.UTC)
+	lastActiveAt := lastLoginAt.Add(15 * time.Minute)
+	lastUsedAt := lastLoginAt.Add(45 * time.Minute)
+
+	out := UserFromServiceAdmin(&service.User{
+		ID:           42,
+		Email:        "admin@example.com",
+		Username:     "admin",
+		Role:         service.RoleAdmin,
+		Status:       service.StatusActive,
+		LastActiveAt: &lastActiveAt,
+		LastUsedAt:   &lastUsedAt,
+	})
+
+	require.NotNil(t, out)
+	require.NotNil(t, out.LastActiveAt)
+	require.NotNil(t, out.LastUsedAt)
+	require.WithinDuration(t, lastActiveAt, *out.LastActiveAt, time.Second)
+	require.WithinDuration(t, lastUsedAt, *out.LastUsedAt, time.Second)
+}