test(billing): assert renewal SOP extends subscription ends_at

tests/Feature/AdminBillingClosedLoopRenewalMissingSubscriptionSopTest.php

@@ -113,6 +113,9 @@ class AdminBillingClosedLoopRenewalMissingSubscriptionSopTest extends TestCase
         ])->assertRedirect();
 
         // 4) 再执行 BMPA：应推进订单为 activated，且仍绑定原订阅（不应生成新订阅）
+        // 同时订阅 ends_at 应被正确延长（续期真正发生）。
+        $oldEndsAt = $sub->ends_at->copy();
+
         $this->post('/admin/platform-orders/' . $order->id . '/mark-paid-and-activate')
             ->assertRedirect();
 
@@ -121,9 +124,12 @@ class AdminBillingClosedLoopRenewalMissingSubscriptionSopTest extends TestCase
         $this->assertSame('activated', (string) $order->status);
         $this->assertSame($sub->id, (int) $order->site_subscription_id);
 
-        // 订阅应仍可用（至少能被正常读取）
         $sub->refresh();
         $this->assertSame($merchant->id, (int) $sub->merchant_id);
         $this->assertSame($plan->id, (int) $sub->plan_id);
+
+        // 续期断言：新 ends_at 必须大于原 ends_at（按 months=period_months*quantity 续期）
+        $this->assertNotNull($sub->ends_at);
+        $this->assertTrue($sub->ends_at->greaterThan($oldEndsAt));
     }
 }