MAGETWO-95977: Magento 2.3.0-beta18: ReflectionException on Backend -> Stores -> Configuration -> Services -> OAuth page

Author: irenelagno

app/code/Magento/Integration/etc/adminhtml/system.xml

@@ -54,7 +54,7 @@
                     <label>Maximum Login Failures to Lock Out Account</label>
                     <comment>Maximum Number of authentication failures to lock out account.</comment>
                 </field>
-                <field id="timeout" translate="label" type="text comment" sortOrder="30" showInDefault="1" showInWebsite="0" showInStore="0" canRestore="1">
+                <field id="timeout" translate="label comment" type="text" sortOrder="30" showInDefault="1" showInWebsite="0" showInStore="0" canRestore="1">
                     <label>Lockout Time (seconds)</label>
                     <comment>Period of time in seconds after which account will be unlocked.</comment>
                 </field>

dev/tests/integration/testsuite/Magento/Integration/Block/Adminhtml/System/Config/OauthSectionTest.php

@@ -0,0 +1,25 @@
+<?php
+/**
+ * Copyright © Magento, Inc. All rights reserved.
+ * See COPYING.txt for license details.
+ */
+declare(strict_types=1);
+
+
+namespace Magento\Integration\Block\Adminhtml\System\Config;
+
+class OauthSectionTest extends \Magento\TestFramework\TestCase\AbstractBackendController
+{
+    /**
+     * Checks that OAuth Section in the system config is loaded
+     */
+    public function testOAuthSection()
+    {
+        $this->dispatch('backend/admin/system_config/edit/section/oauth/');
+        $body = $this->getResponse()->getBody();
+        $this->assertContains('id="oauth_access_token_lifetime-head"', $body);
+        $this->assertContains('id="oauth_cleanup-head"', $body);
+        $this->assertContains('id="oauth_consumer-head"', $body);
+        $this->assertContains('id="oauth_authentication_lock-head"', $body);
+    }
+}