test(billing): SOP branch to block BMPA when refund trail exists

tests/Feature/AdminBillingClosedLoopNewPurchaseSopRefundExistsShouldBlockBmpaTest.php

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+<?php
+
+namespace Tests\Feature;
+
+use App\Models\Merchant;
+use App\Models\Plan;
+use App\Models\PlatformOrder;
+use Illuminate\Foundation\Testing\RefreshDatabase;
+use Tests\TestCase;
+
+/**
+ * 收费闭环异常分支（可验收 SOP）：
+ * 订单一旦存在退款轨迹（refund_summary/refund_receipts），BMPA 必须阻断。
+ * 目的：避免“带退款的订单被强行推进并同步订阅”，导致财务/状态混乱。
+ */
+class AdminBillingClosedLoopNewPurchaseSopRefundExistsShouldBlockBmpaTest extends TestCase
+{
+    use RefreshDatabase;
+
+    protected function loginAsPlatformAdmin(): void
+    {
+        $this->seed();
+
+        $this->post('/admin/login', [
+            'email' => 'platform.admin@demo.local',
+            'password' => 'Platform@123456',
+        ])->assertRedirect('/admin');
+    }
+
+    public function test_sop_new_purchase_refund_exists_should_block_bmpa(): void
+    {
+        $this->loginAsPlatformAdmin();
+
+        $merchant = Merchant::query()->firstOrFail();
+
+        $plan = Plan::query()->create([
+            'code' => 'sop_new_purchase_refund_guard_monthly',
+            'name' => 'SOP新购（退款阻断 BMPA）月付',
+            'billing_cycle' => 'monthly',
+            'price' => 30,
+            'list_price' => 30,
+            'status' => 'active',
+            'sort' => 10,
+            'published_at' => now(),
+        ]);
+
+        // 1) 创建平台订单（新购）
+        $this->post('/admin/platform-orders', [
+            'merchant_id' => $merchant->id,
+            'plan_id' => $plan->id,
+            'order_type' => 'new_purchase',
+            'quantity' => 1,
+            'discount_amount' => 0,
+            'payment_channel' => 'bank_transfer',
+            'remark' => 'SOP 新购（退款阻断 BMPA）',
+        ])->assertRedirect();
+
+        /** @var PlatformOrder $order */
+        $order = PlatformOrder::query()->latest('id')->firstOrFail();
+
+        // 2) 构造“退款轨迹”但订单仍为 unpaid/pending（模拟脏数据/误操作场景）
+        $meta = (array) ($order->meta ?? []);
+        data_set($meta, 'refund_summary', [
+            'count' => 1,
+            'total_amount' => 10.0,
+        ]);
+        $order->meta = $meta;
+        $order->save();
+
+        // 3) BMPA 必须阻断
+        $res = $this->from('/admin/platform-orders/' . $order->id)
+            ->post('/admin/platform-orders/' . $order->id . '/mark-paid-and-activate');
+
+        $res->assertRedirect('/admin/platform-orders/' . $order->id);
+        $res->assertSessionHas('warning');
+
+        $order->refresh();
+        $this->assertSame('unpaid', (string) $order->payment_status);
+        $this->assertSame('pending', (string) $order->status);
+        $this->assertNull($order->site_subscription_id);
+    }
+}