Benchmarking proxy initialization logic

tests/Doctrine/Performance/LazyLoading/ProxyInitializationTimeBench.php

@@ -0,0 +1,81 @@
+<?php
+
+namespace Doctrine\Performance\LazyLoading;
+
+use Doctrine\ORM\Proxy\Proxy;
+use Doctrine\Performance\EntityManagerFactory;
+use Doctrine\Performance\Mock\NonProxyLoadingEntityManager;
+use Doctrine\Tests\Models\CMS\CmsEmployee;
+use Doctrine\Tests\Models\CMS\CmsUser;
+use PhpBench\Benchmark\Metadata\Annotations\BeforeMethods;
+
+/**
+ * @BeforeMethods({"init"})
+ */
+final class ProxyInitializationTimeBench
+{
+    /**
+     * @var Proxy[]
+     */
+    private $cmsUsers;
+
+    /**
+     * @var Proxy[]
+     */
+    private $cmsEmployees;
+
+    /**
+     * @var Proxy[]
+     */
+    private $initializedUsers;
+
+    /**
+     * @var Proxy[]
+     */
+    private $initializedEmployees;
+
+    public function init()
+    {
+        $proxyFactory = (new NonProxyLoadingEntityManager(EntityManagerFactory::getEntityManager([])))
+            ->getProxyFactory();
+
+        for ($i = 0; $i < 10000; ++$i) {
+            $this->cmsUsers[$i]             = $proxyFactory->getProxy(CmsUser::class, ['id' => $i]);
+            $this->cmsEmployees[$i]         = $proxyFactory->getProxy(CmsEmployee::class, ['id' => $i]);
+            $this->initializedUsers[$i]     = $proxyFactory->getProxy(CmsUser::class, ['id' => $i]);
+            $this->initializedEmployees[$i] = $proxyFactory->getProxy(CmsEmployee::class, ['id' => $i]);
+
+            $this->initializedUsers[$i]->__load();
+            $this->initializedEmployees[$i]->__load();
+        }
+    }
+
+    public function benchCmsUserInitialization()
+    {
+        foreach ($this->cmsUsers as $proxy) {
+            $proxy->__load();
+        }
+    }
+
+    public function benchCmsEmployeeInitialization()
+    {
+        foreach ($this->cmsEmployees as $proxy) {
+            $proxy->__load();
+        }
+    }
+
+    public function benchInitializationOfAlreadyInitializedCmsUsers()
+    {
+        foreach ($this->initializedUsers as $proxy) {
+            $proxy->__load();
+        }
+    }
+
+    public function benchInitializationOfAlreadyInitializedCmsEmployees()
+    {
+        foreach ($this->initializedEmployees as $proxy) {
+            $proxy->__load();
+        }
+    }
+}
+