minor: add some test in the ldap component

src/Symfony/Component/Ldap/Tests/Adapter/ExtLdap/EntryManagerTest.php

@@ -0,0 +1,35 @@
+<?php
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\Ldap\Tests\Adapter\ExtLdap;
+
+use PHPUnit\Framework\TestCase;
+use Symfony\Component\Ldap\Adapter\ExtLdap\Connection;
+use Symfony\Component\Ldap\Adapter\ExtLdap\EntryManager;
+use Symfony\Component\Ldap\Entry;
+
+class EntryManagerTest extends TestCase
+{
+    /**
+     * @expectedException \Symfony\Component\Ldap\Exception\NotBoundException
+     * @expectedExceptionMessage Query execution is not possible without binding the connection first.
+     */
+    public function testGetResources()
+    {
+        $connection = $this->getMockBuilder(Connection::class)->getMock();
+        $connection
+            ->expects($this->once())
+            ->method('isBound')->willReturn(false);
+
+        $entry = new Entry('$$$$$$');
+        $entryManager = new EntryManager($connection);
+        $entryManager->update($entry);
+    }
+}