fixing some tests

tests/_pages/UpdatePage.php

@@ -0,0 +1,29 @@
+<?php
+
+namespace tests\_pages;
+
+use yii\codeception\BasePage;
+
+/**
+ * Represents admin update page.
+ *
+ * @property \FunctionalTester $actor
+ */
+class UpdatePage extends BasePage
+{
+    /** @inheritdoc */
+    public $route = '/user/admin/update';
+
+    /**
+     * @param $username
+     * @param $email
+     * @param $password
+     */
+    public function update($username, $email, $password = null)
+    {
+        $this->actor->fillField('#user-username', $username);
+        $this->actor->fillField('#user-email', $email);
+        $this->actor->fillField('#user-password', $password);
+        $this->actor->click('Update');
+    }
+}