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

backend/internal/handler/gateway_handler_usage_test.go

@@ -0,0 +1,51 @@
+package handler
+
+import (
+	"context"
+	"encoding/json"
+	"net/http"
+	"net/http/httptest"
+	"testing"
+	"time"
+
+	"github.com/Wei-Shaw/sub2api/internal/server/middleware"
+	"github.com/Wei-Shaw/sub2api/internal/service"
+	"github.com/gin-gonic/gin"
+	"github.com/stretchr/testify/require"
+)
+
+func TestUsageUnrestrictedIncludesWeeklyWindowStart(t *testing.T) {
+	gin.SetMode(gin.TestMode)
+	recorder := httptest.NewRecorder()
+	c, _ := gin.CreateTestContext(recorder)
+	c.Request = httptest.NewRequest(http.MethodGet, "/v1/usage", nil)
+
+	weeklyWindowStart := time.Date(2026, time.July, 13, 0, 30, 0, 0, time.FixedZone("UTC+8", 8*60*60))
+	c.Set(string(middleware.ContextKeySubscription), &service.UserSubscription{
+		WeeklyWindowStart: &weeklyWindowStart,
+	})
+
+	handler := &GatewayHandler{}
+	handler.usageUnrestricted(
+		c,
+		context.Background(),
+		&service.APIKey{Group: &service.Group{
+			Name:             "Weekly plan",
+			SubscriptionType: service.SubscriptionTypeSubscription,
+		}},
+		middleware.AuthSubject{},
+		nil,
+		nil,
+		nil,
+	)
+
+	require.Equal(t, http.StatusOK, recorder.Code)
+	var response struct {
+		Subscription struct {
+			WeeklyWindowStart *time.Time `json:"weekly_window_start"`
+		} `json:"subscription"`
+	}
+	require.NoError(t, json.Unmarshal(recorder.Body.Bytes(), &response))
+	require.NotNil(t, response.Subscription.WeeklyWindowStart)
+	require.True(t, weeklyWindowStart.Equal(*response.Subscription.WeeklyWindowStart))
+}