yii composer install

tests/codeception/functional/AboutCept.php

@@ -0,0 +1,10 @@
+<?php
+
+use tests\codeception\_pages\AboutPage;
+
+/* @var $scenario Codeception\Scenario */
+
+$I = new FunctionalTester($scenario);
+$I->wantTo('ensure that about works');
+AboutPage::openBy($I);
+$I->see('About', 'h1');