新增测试代码规范、修复响应体断言缺失与魔法数字

- AGENTS.md 新增测试代码专项规范：常量、fixture、触发器、HTTP断言、层边界说明
- TestUpdateAllocationExpiryBaseHTTP 补全 PATCH 响应体字段断言
- 四个集成测试文件以 testIDMask 局部常量替换 0x7fffffff 魔法数字

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

internal/handler/admin/shop_package_expiry_base_integration_test.go

@@ -1,5 +1,8 @@
 package admin
 
+// testIDMask 用于将纳秒时间戳截断为合法的 uint 主键范围，仅限测试用。
+const testIDMask = 0x7fffffff
+
 import (
 	"bytes"
 	"context"
@@ -94,7 +97,34 @@ func TestUpdateAllocationExpiryBaseHTTP(t *testing.T) {
 	app := fixture.newApp(constants.UserTypeSuperAdmin, 0)
 	path := "/api/admin/shop-package-allocations/" + strconv.FormatUint(uint64(allocation.ID), 10) + "/expiry-base"
 
-	for _, body := range []string{`{"expiry_base_override":"from_activation"}`, `{"expiry_base_override":"from_activation"}`, `{"expiry_base_override":null}`} {
+	// 首次 PATCH 验证响应体包含 spec 要求的所有生效条件字段
+	{
+		status, respBody := expiryBaseHTTPRequest(t, app, http.MethodPatch, path, `{"expiry_base_override":"from_activation"}`)
+		if status != http.StatusOK {
+			t.Fatalf("首次 PATCH 失败：status=%d body=%s", status, respBody)
+		}
+		var resp struct {
+			Data struct {
+				DefaultExpiryBase       string  `json:"default_expiry_base"`
+				DefaultExpiryBaseName   string  `json:"default_expiry_base_name"`
+				ExpiryBaseOverride      *string `json:"expiry_base_override"`
+				ExpiryBaseOverrideName  string  `json:"expiry_base_override_name"`
+				EffectiveExpiryBase     string  `json:"effective_expiry_base"`
+				EffectiveExpiryBaseName string  `json:"effective_expiry_base_name"`
+			} `json:"data"`
+		}
+		if err := sonic.Unmarshal(respBody, &resp); err != nil {
+			t.Fatalf("解析 PATCH 响应失败：%v", err)
+		}
+		d := resp.Data
+		if d.DefaultExpiryBase == "" || d.DefaultExpiryBaseName == "" ||
+			d.ExpiryBaseOverride == nil || d.ExpiryBaseOverrideName == "" ||
+			d.EffectiveExpiryBase == "" || d.EffectiveExpiryBaseName == "" {
+			t.Fatalf("PATCH 响应缺少 spec 要求的生效条件字段：%+v", d)
+		}
+	}
+	// 幂等 + 恢复默认
+	for _, body := range []string{`{"expiry_base_override":"from_activation"}`, `{"expiry_base_override":null}`} {
 		status, responseBody := expiryBaseHTTPRequest(t, app, http.MethodPatch, path, body)
 		if status != http.StatusOK {
 			t.Fatalf("修改覆盖值失败：status=%d body=%s", status, responseBody)
@@ -200,7 +230,7 @@ func expiryBaseHTTPRequest(t *testing.T, app *fiber.App, method, path, body stri
 }
 
 func completeExpiryBaseTestUsage(packageID uint) *model.PackageUsage {
-	unique := uint(time.Now().UnixNano() & 0x7fffffff)
+	unique := uint(time.Now().UnixNano() & testIDMask)
 	return &model.PackageUsage{OrderID: unique, OrderNo: "UR55-PATCH-USAGE", PackageID: packageID, UsageType: constants.AssetWalletResourceTypeIotCard, IotCardID: unique, DataLimitMB: 1, Status: constants.PackageUsageStatusPending, Priority: 1, PackageName: "UR55测试套餐", Generation: 1, ExpiryBaseSnapshot: constants.PackageExpiryBaseFromPurchase, CalendarTypeSnapshot: constants.PackageCalendarTypeByDay, DurationDaysSnapshot: 30}
 }
 

internal/service/order/package_terms_integration_test.go

@@ -1,5 +1,8 @@
 package order
 
+// testIDMask 用于将纳秒时间戳截断为合法的 uint 主键范围，仅限测试用。
+const testIDMask = testIDMask
+
 import (
 	"context"
 	"strconv"
@@ -20,7 +23,7 @@ func TestSynchronousPurchasePersistsImmutableTermsSnapshots(t *testing.T) {
 	card := createOrderTermsCard(t, tx, constants.RealNameStatusNotVerified)
 	formal := createOrderTermsPackage(t, tx, constants.PackageTypeFormal, constants.PackageExpiryBaseFromActivation, 45)
 	addon := createOrderTermsPackage(t, tx, constants.PackageTypeAddon, constants.PackageExpiryBaseFromActivation, 10)
-	shopID := uint(time.Now().UnixNano() & 0x7fffffff)
+	shopID := uint(time.Now().UnixNano() & testIDMask)
 	override := constants.PackageExpiryBaseFromPurchase
 	for _, packageID := range []uint{formal.ID, addon.ID} {
 		allocation := &model.ShopPackageAllocation{ShopID: shopID, PackageID: packageID, CostPrice: 1, RetailPrice: 2, Status: constants.StatusEnabled, ShelfStatus: 1, ExpiryBaseOverride: &override}
@@ -96,7 +99,7 @@ func TestCEndPurchasePersistsSnapshotAndActivatesImmediately(t *testing.T) {
 	service := &Service{shopPackageAllocationStore: postgres.NewShopPackageAllocationStore(tx), logger: zap.NewNop()}
 	now := time.Now()
 	order := &model.Order{
-		Model:     gorm.Model{ID: uint(time.Now().UnixNano() & 0x7fffffff)},
+		Model:     gorm.Model{ID: uint(time.Now().UnixNano() & testIDMask)},
 		OrderNo:   "UR55-CEND-" + strconv.FormatInt(time.Now().UnixNano(), 10),
 		OrderType: model.OrderTypeSingleCard,
 		BuyerType: model.BuyerTypePersonal,
@@ -168,6 +171,6 @@ func createOrderTermsPackage(t *testing.T, tx *gorm.DB, packageType, expiryBase
 }
 
 func newOrderTermsOrder(packageID, cardID uint, sellerShopID *uint) *model.Order {
-	orderID := uint(time.Now().UnixNano() & 0x7fffffff)
+	orderID := uint(time.Now().UnixNano() & testIDMask)
 	return &model.Order{Model: gorm.Model{ID: orderID}, OrderNo: "UR55-ORDER-" + strconv.FormatUint(uint64(orderID), 10), OrderType: model.OrderTypeSingleCard, BuyerType: model.BuyerTypeAgent, IotCardID: &cardID, SellerShopID: sellerShopID, TotalAmount: 100, Generation: 1}
 }

internal/service/package/activation_terms_integration_test.go

@@ -1,5 +1,8 @@
 package packagepkg
 
+// testIDMask 用于将纳秒时间戳截断为合法的 uint 主键范围，仅限测试用。
+const testIDMask = testIDMask
+
 import (
 	"context"
 	"strconv"
@@ -132,7 +135,7 @@ func TestHistoricalFallbackFiresWarningAndIncrementsCounter(t *testing.T) {
 	card := createActivationTermsCard(t, tx, constants.RealNameStatusVerified)
 	pkg := createActivationTermsPackage(t, tx, constants.PackageExpiryBaseFromActivation, 21)
 	// 历史记录：四个快照字段全为空值/零值
-	unique := uint(time.Now().UnixNano() & 0x7fffffff)
+	unique := uint(time.Now().UnixNano() & testIDMask)
 	usage := &model.PackageUsage{
 		OrderID: unique, OrderNo: "UR55-HIST-" + strconv.FormatUint(uint64(unique), 10),
 		PackageID: pkg.ID, PackageName: "UR55历史测试套餐",
@@ -214,7 +217,7 @@ func createActivationTermsPackage(t *testing.T, tx *gorm.DB, expiryBase string,
 
 func createActivationTermsUsage(t *testing.T, tx *gorm.DB, packageID, cardID uint, priority int, expiryBase string, durationDays int, pendingRealname bool, createdAt time.Time) *model.PackageUsage {
 	t.Helper()
-	unique := uint(time.Now().UnixNano() & 0x7fffffff)
+	unique := uint(time.Now().UnixNano() & testIDMask)
 	usage := &model.PackageUsage{Model: gorm.Model{CreatedAt: createdAt}, OrderID: unique, OrderNo: "UR55-ACTIVATE-" + strconv.FormatUint(uint64(unique), 10), PackageID: packageID, PackageName: "UR55激活测试套餐", UsageType: constants.AssetWalletResourceTypeIotCard, IotCardID: cardID, DataLimitMB: 1, Status: constants.PackageUsageStatusPending, Priority: priority, PendingRealnameActivation: pendingRealname, Generation: 1, ExpiryBaseSnapshot: expiryBase, CalendarTypeSnapshot: constants.PackageCalendarTypeByDay, DurationDaysSnapshot: durationDays}
 	if err := tx.Omit("status", "pending_realname_activation").Create(usage).Error; err != nil {
 		t.Fatalf("创建激活测试使用记录失败：%v", err)

internal/task/auto_purchase_terms_integration_test.go

@@ -1,5 +1,8 @@
 package task
 
+// testIDMask 用于将纳秒时间戳截断为合法的 uint 主键范围，仅限测试用。
+const testIDMask = testIDMask
+
 import (
 	"context"
 	"strconv"
@@ -34,7 +37,7 @@ func TestAutoPurchasePersistsTermsSnapshotsAndRealnameDecision(t *testing.T) {
 			tx := testutil.NewPostgresTransaction(t)
 			card := createAutoPurchaseCard(t, tx, testCase.realnameStatus)
 			pkg := createAutoPurchasePackage(t, tx, constants.PackageTypeFormal, testCase.defaultBase, 31)
-			shopID := uint(time.Now().UnixNano() & 0x7fffffff)
+			shopID := uint(time.Now().UnixNano() & testIDMask)
 			if testCase.override != nil {
 				allocation := &model.ShopPackageAllocation{ShopID: shopID, PackageID: pkg.ID, CostPrice: 1, RetailPrice: 2, Status: constants.StatusEnabled, ShelfStatus: 1, ExpiryBaseOverride: testCase.override}
 				if err := tx.Create(allocation).Error; err != nil {
@@ -186,7 +189,7 @@ func createAutoPurchasePackage(t *testing.T, tx *gorm.DB, packageType, expiryBas
 }
 
 func newAutoPurchaseOrder(cardID uint, sellerShopID *uint) *model.Order {
-	orderID := uint(time.Now().UnixNano() & 0x7fffffff)
+	orderID := uint(time.Now().UnixNano() & testIDMask)
 	return &model.Order{Model: gorm.Model{ID: orderID}, OrderNo: "UR55-AUTO-" + strconv.FormatUint(uint64(orderID), 10), OrderType: model.OrderTypeSingleCard, IotCardID: &cardID, SellerShopID: sellerShopID, TotalAmount: 100, Generation: 1}
 }