diff --git a/tests/CreatesApplication.php b/tests/CreatesApplication.php
index 61e9fda0..4d93cd52 100644
--- a/tests/CreatesApplication.php
+++ b/tests/CreatesApplication.php
@@ -3,6 +3,7 @@
 namespace Tests;
 
 use Illuminate\Contracts\Console\Kernel;
+use Illuminate\Database\DatabaseManager;
 use RuntimeException;
 
 trait CreatesApplication
@@ -32,6 +33,23 @@ trait CreatesApplication
             throw new RuntimeException('测试环境未使用内存 SQLite，已拒绝执行以保护共享数据库。');
         }
 
+        // Several migrations deliberately target the business_mirror connection.
+        // Force that connection onto its own in-memory SQLite database before
+        // RefreshDatabase runs, even when the developer's local .env points at
+        // the shared production mirror.
+        config([
+            'database.connections.business_mirror' => config('database.connections.sqlite'),
+            'upstream_mirrors.connection' => 'business_mirror',
+        ]);
+        $app->make(DatabaseManager::class)->purge('business_mirror');
+
+        if (
+            config('database.connections.business_mirror.driver') !== 'sqlite'
+            || config('database.connections.business_mirror.database') !== ':memory:'
+        ) {
+            throw new RuntimeException('测试业务镜像连接未使用内存 SQLite，已拒绝执行以保护共享数据库。');
+        }
+
         return $app;
     }
 }
diff --git a/tests/Feature/Business/MarketingPlatformPromotionBillsTest.php b/tests/Feature/Business/MarketingPlatformPromotionBillsTest.php
index 127c28a0..91373883 100644
--- a/tests/Feature/Business/MarketingPlatformPromotionBillsTest.php
+++ b/tests/Feature/Business/MarketingPlatformPromotionBillsTest.php
@@ -64,23 +64,36 @@ class MarketingPlatformPromotionBillsTest extends FeatureTestCase
             'account' => 'account-01',
         ]));
 
+        $filename = '店铺营销账户账单_jd_2026-08.csv';
         $response->assertOk()
             ->assertHeader('Content-Type', 'text/csv; charset=UTF-8')
-            ->assertDownload('店铺营销账户账单_jd_2026-08.csv');
+            ->assertDownload('_jd_2026-08.csv');
+        $this->assertStringContainsString(
+            "filename*=utf-8''" . rawurlencode($filename),
+            (string) $response->headers->get('Content-Disposition'),
+        );
         $this->assertStringContainsString('测试店铺', $response->streamedContent());
     }
 
-    public function test_removed_platform_promotion_directory_is_not_available(): void
+    public function test_removed_platform_promotion_directory_returns_to_the_current_page_with_feedback(): void
     {
         $this->allowMarketingAccountBillsPage();
+        $this->withExceptionHandling();
+        $this->loginAs();
+        $currentPage = route('business.pages.show', [
+            'section' => 'billing-transactions',
+            'page' => 'marketing-account-bills',
+            'tab' => 'jd-promotion',
+        ]);
 
-        $this->loginAs()
+        $this->from($currentPage)
             ->get(route('business.pages.show', [
                 'section' => 'billing-transactions',
                 'page' => 'platform-promotion-accounts',
                 'tab' => 'jd',
             ]))
-            ->assertNotFound();
+            ->assertRedirect($currentPage)
+            ->assertSessionHas('errors');
     }
 
     private function dashboardData(): array