售后金额上浮

tests/Feature/BillPaymentTest.php

@@ -133,6 +133,56 @@ class BillPaymentTest extends ProcurementTestCase
         $this->assertSame('5.00', (string) $bill2->total_amount, '未传售后金额不影响总金额');
     }
 
+    /** 售后金额按客户等级上浮折算：输入 15、上浮 1% → 实收 15.15；billPrepare 回显等级（负数同比例放大） */
+    public function test_generate_bill_after_sale_marked_up_by_level(): void
+    {
+        $level = CustomerLevelModel::factory()->create(['percent' => 1]);
+        $store = StoreModel::factory()->create(['level_id' => $level->id]);
+        $level2 = CustomerLevelModel::factory()->create(['percent' => 2]);
+        $store2 = StoreModel::factory()->create(['level_id' => $level2->id]);
+        $product = ProductModel::factory()->create(['status' => ProductModel::STATUS_ON, 'cost_price' => '5.00']);
+
+        // 两店各下一单：店1 等级价 5.05 × 4 = 20.20；店2 等级价 5.10 × 2 = 10.20
+        foreach ([[$store, 4], [$store2, 2]] as [$s, $qty]) {
+            $this->actingAsMiniStore($s);
+            $this->postJson('/mini/order', ['items' => [['product_id' => $product->id, 'quantity' => $qty]]])
+                ->assertJsonPath('success', true);
+        }
+        StoreOrderModel::query()->update(['status' => StoreOrderModel::STATUS_SUMMARIZED]);
+
+        $this->actingAsSysUser();
+        $this->postJson('/purchase/order/generate', ['purchase_date' => now()->toDateString()])
+            ->assertJsonPath('success', true);
+        $purchase = PurchaseOrderModel::first();
+        $this->putJson("/purchase/order/{$purchase->id}/finish")->assertJsonPath('success', true);
+
+        // billPrepare 回显客户等级与上浮比例（弹窗预览用）
+        $prepare = $this->getJson("/purchase/order/{$purchase->id}/bill/prepare")
+            ->assertJsonPath('success', true)
+            ->json('data.stores');
+        $prepareByStore = collect($prepare)->keyBy('store_id');
+        $this->assertSame($level->name, $prepareByStore[$store->id]['level_name']);
+        $this->assertSame('1.00', (string) $prepareByStore[$store->id]['level_percent']);
+        $this->assertSame($level2->name, $prepareByStore[$store2->id]['level_name']);
+        $this->assertSame('2.00', (string) $prepareByStore[$store2->id]['level_percent']);
+
+        // 店1 售后 15 × 101% = 15.15；店2 售后 -10 × 102% = -10.20
+        $this->postJson("/purchase/order/{$purchase->id}/bill", [
+            'stores' => [
+                ['store_id' => $store->id, 'delivery_fee' => 0, 'box_num' => 0, 'tray_num' => 0, 'after_sale' => 15],
+                ['store_id' => $store2->id, 'delivery_fee' => 0, 'box_num' => 0, 'tray_num' => 0, 'after_sale' => -10],
+            ],
+        ])->assertJsonPath('success', true);
+
+        $bill = BillModel::where('store_id', $store->id)->first();
+        $this->assertSame('15.15', (string) $bill->after_sale, '15 × 101%');
+        $this->assertSame('35.35', (string) $bill->total_amount, '商品 20.20 + 售后 15.15');
+
+        $bill2 = BillModel::where('store_id', $store2->id)->first();
+        $this->assertSame('-10.20', (string) $bill2->after_sale, '-10 × 102%（负数同比例放大）');
+        $this->assertSame('0.00', (string) $bill2->total_amount, '商品 10.20 + 售后 -10.20');
+    }
+
     /** 生成账单：售后金额为正数时加收计入总金额 */
     public function test_generate_bill_positive_after_sale_added_to_total(): void
     {