add request container

tests/ZM/Container/ContainerTest.php

@@ -0,0 +1,30 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Tests\ZM\Container;
+
+use PHPUnit\Framework\TestCase;
+use ZM\Container\Container;
+use ZM\Container\WorkerContainer;
+
+/**
+ * @internal
+ */
+class ContainerTest extends TestCase
+{
+    public function testInherit(): void
+    {
+        $worker_container = new WorkerContainer();
+        $worker_container->instance('foo', 'bar');
+
+        $container = new Container($worker_container);
+        $container->instance('baz', 'qux');
+
+        // 获取父容器的实例
+        $this->assertEquals('bar', $container->get('foo'));
+
+        // 获取自身容器的实例
+        $this->assertEquals('qux', $container->get('baz'));
+    }
+}