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

backend/internal/service/redeem_code_test.go

@@ -0,0 +1,59 @@
+package service
+
+import (
+	"testing"
+	"time"
+
+	"github.com/stretchr/testify/require"
+)
+
+func TestRedeemCodeExpiry(t *testing.T) {
+	now := time.Now().UTC()
+	past := now.Add(-time.Hour)
+	future := now.Add(time.Hour)
+
+	tests := []struct {
+		name        string
+		code        RedeemCode
+		wantExpired bool
+		wantCanUse  bool
+	}{
+		{
+			name:        "unused without expiry can be used",
+			code:        RedeemCode{Status: StatusUnused},
+			wantExpired: false,
+			wantCanUse:  true,
+		},
+		{
+			name:        "unused before expiry can be used",
+			code:        RedeemCode{Status: StatusUnused, ExpiresAt: &future},
+			wantExpired: false,
+			wantCanUse:  true,
+		},
+		{
+			name:        "unused after expiry cannot be used",
+			code:        RedeemCode{Status: StatusUnused, ExpiresAt: &past},
+			wantExpired: true,
+			wantCanUse:  false,
+		},
+		{
+			name:        "explicit expired status is expired",
+			code:        RedeemCode{Status: StatusExpired},
+			wantExpired: true,
+			wantCanUse:  false,
+		},
+		{
+			name:        "used code remains used even after expiry time",
+			code:        RedeemCode{Status: StatusUsed, ExpiresAt: &past},
+			wantExpired: false,
+			wantCanUse:  false,
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			require.Equal(t, tt.wantExpired, tt.code.IsExpiredAt(now))
+			require.Equal(t, tt.wantCanUse, tt.code.CanUse())
+		})
+	}
+}