续费下单链路：订阅详情->创建订单->订单详情 back 端到端护栏

tests/Feature/AdminSubscriptionRenewalCreatePlatformOrderEndToEndBackFlowTest.php

@@ -0,0 +1,104 @@
+<?php
+
+namespace Tests\Feature;
+
+use App\Models\Merchant;
+use App\Models\Plan;
+use App\Models\SiteSubscription;
+use Illuminate\Foundation\Testing\RefreshDatabase;
+use Tests\TestCase;
+
+class AdminSubscriptionRenewalCreatePlatformOrderEndToEndBackFlowTest 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_end_to_end_subscription_show_to_create_to_store_to_show_with_back(): void
+    {
+        $this->loginAsPlatformAdmin();
+
+        $merchant = Merchant::query()->firstOrFail();
+        $plan = Plan::query()->create([
+            'code' => 'sub_show_to_po_create_end2end_plan',
+            'name' => '订阅详情->创建续费订单 end2end 测试套餐',
+            'billing_cycle' => 'monthly',
+            'price' => 10,
+            'list_price' => 10,
+            'status' => 'active',
+            'sort' => 10,
+            'published_at' => now(),
+        ]);
+
+        $sub = SiteSubscription::query()->create([
+            'merchant_id' => $merchant->id,
+            'plan_id' => $plan->id,
+            'status' => 'activated',
+            'source' => 'manual',
+            'subscription_no' => 'SUB_END2END_0001',
+            'plan_name' => $plan->name,
+            'billing_cycle' => $plan->billing_cycle,
+            'period_months' => 1,
+            'amount' => 10,
+            'starts_at' => now()->subDay(),
+            'ends_at' => now()->addMonth(),
+            'activated_at' => now()->subDay(),
+        ]);
+
+        // 1) 从订阅详情页进入
+        $subShow = $this->get('/admin/site-subscriptions/' . $sub->id);
+        $subShow->assertOk();
+
+        // 订阅详情页的“创建续费订单”链接 back 应该回到订阅详情自身
+        $expectedBack = '/admin/site-subscriptions/' . $sub->id;
+        $subShow->assertSee('back=' . urlencode($expectedBack), false);
+
+        // 2) 打开创建页（携带默认值 + back）
+        $createUrl = '/admin/platform-orders/create?'
+            . 'merchant_id=' . $merchant->id
+            . '&plan_id=' . $plan->id
+            . '&site_subscription_id=' . $sub->id
+            . '&order_type=renewal'
+            . '&quantity=1'
+            . '&remark=' . urlencode('来自订阅：' . $sub->subscription_no)
+            . '&back=' . urlencode($expectedBack);
+
+        $createRes = $this->get($createUrl);
+        $createRes->assertOk();
+        $createRes->assertSee('name="back"', false);
+        $createRes->assertSee('value="' . $expectedBack . '"', false);
+        $createRes->assertSee('value="' . $sub->id . '"', false);
+
+        // 3) 提交创建订单，断言 redirect 到 show 且带回 back
+        $storeRes = $this->post('/admin/platform-orders', [
+            'merchant_id' => $merchant->id,
+            'plan_id' => $plan->id,
+            'site_subscription_id' => $sub->id,
+            'order_type' => 'renewal',
+            'quantity' => 1,
+            'discount_amount' => 0,
+            'payment_channel' => 'offline',
+            'remark' => '来自订阅：' . $sub->subscription_no,
+            'back' => $expectedBack,
+        ]);
+
+        $storeRes->assertRedirect();
+        $location = (string) $storeRes->headers->get('Location');
+        $this->assertStringContainsString('/admin/platform-orders/', $location);
+        $this->assertStringContainsString('back=' . urlencode($expectedBack), $location);
+
+        // 4) 打开 show 页，确认“返回上一页（保留上下文）”存在
+        $showRes = $this->get($location);
+        $showRes->assertOk();
+        $showRes->assertSee('← 返回上一页（保留上下文）');
+        $showRes->assertSee('href="' . $expectedBack . '"', false);
+    }
+}