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tests/Feature/Feature/AdminDashboardControllerTest.php

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+<?php
+
+/**
+ * 文件功能：后台仪表盘统计功能测试
+ *
+ * 覆盖后台首页在线人数卡片展示，确保仪表盘统计口径与聊天室在线名单一致。
+ *
+ * @author   ChatRoom Laravel
+ *
+ * @version  1.0.0
+ */
+
+namespace Tests\Feature\Feature;
+
+use App\Models\Room;
+use App\Models\User;
+use Illuminate\Foundation\Testing\RefreshDatabase;
+use Illuminate\Support\Facades\Redis;
+use Tests\TestCase;
+
+/**
+ * 类功能：验证后台仪表盘核心统计数据的展示。
+ */
+class AdminDashboardControllerTest extends TestCase
+{
+    use RefreshDatabase;
+
+    /**
+     * 每个测试前清空 Redis，避免在线名单缓存影响断言结果。
+     */
+    protected function setUp(): void
+    {
+        parent::setUp();
+
+        Redis::flushall();
+    }
+
+    /**
+     * 验证后台仪表盘会显示去重后的在线人数。
+     */
+    public function test_dashboard_displays_unique_online_user_count(): void
+    {
+        $siteOwner = User::factory()->create([
+            'id' => 1,
+            'username' => 'site-owner',
+        ]);
+
+        $roomOne = Room::create(['room_name' => '后台房间一']);
+        $roomTwo = Room::create(['room_name' => '后台房间二']);
+
+        // 同一用户重复出现在多个房间时，仪表盘应按全局去重后的在线人数展示。
+        Redis::hset("room:{$roomOne->id}:users", 'alice', json_encode(['username' => 'alice'], JSON_UNESCAPED_UNICODE));
+        Redis::setex("room:{$roomOne->id}:alive:alice", 90, 1);
+        Redis::hset("room:{$roomTwo->id}:users", 'alice', json_encode(['username' => 'alice'], JSON_UNESCAPED_UNICODE));
+        Redis::setex("room:{$roomTwo->id}:alive:alice", 90, 1);
+        Redis::hset("room:{$roomTwo->id}:users", 'bob', json_encode(['username' => 'bob'], JSON_UNESCAPED_UNICODE));
+        Redis::setex("room:{$roomTwo->id}:alive:bob", 90, 1);
+
+        $response = $this->actingAs($siteOwner)->get(route('admin.dashboard'));
+
+        $response->assertOk();
+        $response->assertSee('当前在线人数');
+        $response->assertSee('2');
+    }
+}