Реализован обработчик для смены языка аккаунта

tests/codeception/api/functional/AccountsChangeLangCest.php

@@ -0,0 +1,31 @@
+<?php
+namespace tests\codeception\api\functional;
+
+use Codeception\Specify;
+use tests\codeception\api\_pages\AccountsRoute;
+use tests\codeception\api\FunctionalTester;
+
+class AccountsChangeLangCest {
+
+    /**
+     * @var AccountsRoute
+     */
+    private $route;
+
+    public function _before(FunctionalTester $I) {
+        $this->route = new AccountsRoute($I);
+    }
+
+    public function testSubmitNewEmail(FunctionalTester $I) {
+        $I->wantTo('change my account language');
+        $I->loggedInAsActiveAccount();
+
+        $this->route->changeLang('ru');
+        $I->canSeeResponseCodeIs(200);
+        $I->canSeeResponseIsJson();
+        $I->canSeeResponseContainsJson([
+            'success' => true,
+        ]);
+    }
+
+}