test(back): index 页 back 链接不应 escape &（护栏）

tests/Feature/AdminPlanIndexBackLinkNotEscapedTest.php

@@ -0,0 +1,33 @@
+<?php
+
+namespace Tests\Feature;
+
+use Illuminate\Foundation\Testing\RefreshDatabase;
+use Tests\TestCase;
+
+class AdminPlanIndexBackLinkNotEscapedTest 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_index_back_link_should_not_escape_ampersand(): void
+    {
+        $this->loginAsPlatformAdmin();
+
+        $back = '/admin/site-subscriptions?status=activated&keyword=test';
+
+        $this->get('/admin/plans?back=' . urlencode($back))
+            ->assertOk()
+            ->assertSee('返回上一页（保留上下文）')
+            ->assertSee('href="' . $back . '"', false);
+    }
+}

tests/Feature/AdminPlatformOrderIndexBackLinkNotEscapedTest.php

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+<?php
+
+namespace Tests\Feature;
+
+use Illuminate\Foundation\Testing\RefreshDatabase;
+use Tests\TestCase;
+
+class AdminPlatformOrderIndexBackLinkNotEscapedTest 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_index_back_link_should_not_escape_ampersand(): void
+    {
+        $this->loginAsPlatformAdmin();
+
+        $back = '/admin/site-subscriptions?status=activated&keyword=test';
+
+        $this->get('/admin/platform-orders?back=' . urlencode($back))
+            ->assertOk()
+            ->assertSee('返回上一页（保留上下文）')
+            // 关键护栏：必须是原样 &，不能被 escape 成 &amp;
+            ->assertSee('href="' . $back . '"', false);
+    }
+
+    public function test_index_should_not_show_back_link_when_back_is_external_url(): void
+    {
+        $this->loginAsPlatformAdmin();
+
+        $this->get('/admin/platform-orders?back=' . urlencode('https://evil.example.com/?x=1&y=2'))
+            ->assertOk()
+            ->assertDontSee('返回上一页（保留上下文）');
+    }
+}

tests/Feature/AdminSiteSubscriptionIndexBackLinkNotEscapedTest.php

@@ -0,0 +1,33 @@
+<?php
+
+namespace Tests\Feature;
+
+use Illuminate\Foundation\Testing\RefreshDatabase;
+use Tests\TestCase;
+
+class AdminSiteSubscriptionIndexBackLinkNotEscapedTest 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_index_back_link_should_not_escape_ampersand(): void
+    {
+        $this->loginAsPlatformAdmin();
+
+        $back = '/admin/platform-orders?status=pending&keyword=test';
+
+        $this->get('/admin/site-subscriptions?back=' . urlencode($back))
+            ->assertOk()
+            ->assertSee('返回上一页（保留上下文）')
+            ->assertSee('href="' . $back . '"', false);
+    }
+}