Fix refund_status filter to use refund total > 0; add test

tests/Feature/AdminPlatformOrderRefundStatusFilterShouldTreatZeroRefundAsNoneTest.php

@@ -0,0 +1,105 @@
+<?php
+
+namespace Tests\Feature;
+
+use App\Models\Merchant;
+use App\Models\Plan;
+use App\Models\PlatformOrder;
+use Illuminate\Foundation\Testing\RefreshDatabase;
+use Tests\TestCase;
+
+/**
+ * 退款轨迹筛选（refund_status）应按“退款总额是否>0”判定。
+ * 目的：避免 refund_summary.total_amount=0 这种“空字段”被误判为“有退款”。
+ */
+class AdminPlatformOrderRefundStatusFilterShouldTreatZeroRefundAsNoneTest 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_refund_status_filter_should_treat_zero_refund_summary_as_none(): void
+    {
+        $this->loginAsPlatformAdmin();
+
+        $merchant = Merchant::query()->firstOrFail();
+
+        $plan = Plan::query()->create([
+            'code' => 'refund_status_zero_should_be_none',
+            'name' => '退款轨迹筛选：0 退款应判定为 none',
+            'billing_cycle' => 'monthly',
+            'price' => 10,
+            'list_price' => 10,
+            'status' => 'active',
+            'sort' => 10,
+            'published_at' => now(),
+        ]);
+
+        // 1) refund_summary.total_amount=0：应视为“无退款”
+        PlatformOrder::query()->create([
+            'merchant_id' => $merchant->id,
+            'plan_id' => $plan->id,
+            'order_no' => 'PO_REFUND_SUMMARY_ZERO_0001',
+            'order_type' => 'new_purchase',
+            'status' => 'activated',
+            'payment_status' => 'paid',
+            'plan_name' => $plan->name,
+            'billing_cycle' => $plan->billing_cycle,
+            'period_months' => 1,
+            'quantity' => 1,
+            'payable_amount' => 10,
+            'paid_amount' => 10,
+            'placed_at' => now(),
+            'paid_at' => now(),
+            'activated_at' => now(),
+            'meta' => [
+                'refund_summary' => [
+                    'count' => 0,
+                    'total_amount' => 0,
+                ],
+            ],
+        ]);
+
+        // 2) refund_receipts 有金额：应视为“有退款”
+        PlatformOrder::query()->create([
+            'merchant_id' => $merchant->id,
+            'plan_id' => $plan->id,
+            'order_no' => 'PO_REFUND_RECEIPT_POSITIVE_0002',
+            'order_type' => 'new_purchase',
+            'status' => 'activated',
+            'payment_status' => 'partially_refunded',
+            'plan_name' => $plan->name,
+            'billing_cycle' => $plan->billing_cycle,
+            'period_months' => 1,
+            'quantity' => 1,
+            'payable_amount' => 10,
+            'paid_amount' => 10,
+            'placed_at' => now(),
+            'paid_at' => now(),
+            'activated_at' => now(),
+            'meta' => [
+                'refund_receipts' => [
+                    ['amount' => 1.00, 'refunded_at' => now()->toDateTimeString()],
+                ],
+            ],
+        ]);
+
+        $this->get('/admin/platform-orders?refund_status=has')
+            ->assertOk()
+            ->assertSee('PO_REFUND_RECEIPT_POSITIVE_0002')
+            ->assertDontSee('PO_REFUND_SUMMARY_ZERO_0001');
+
+        $this->get('/admin/platform-orders?refund_status=none')
+            ->assertOk()
+            ->assertSee('PO_REFUND_SUMMARY_ZERO_0001')
+            ->assertDontSee('PO_REFUND_RECEIPT_POSITIVE_0002');
+    }
+}