Rework tests structure. Upgrade codeception to 2.5.3. Merge params configuration into app configuration.

api/tests/functional/OptionsCest.php

@@ -0,0 +1,29 @@
+<?php
+namespace api\tests\functional;
+
+use api\tests\_pages\OptionsRoute;
+use api\tests\FunctionalTester;
+
+class OptionsCest {
+
+    /**
+     * @var OptionsRoute
+     */
+    private $route;
+
+    public function _before(FunctionalTester $I) {
+        $this->route = new OptionsRoute($I);
+    }
+
+    public function testRecaptchaPublicKey(FunctionalTester $I) {
+        $I->wantTo('Get recaptcha public key');
+
+        $this->route->get();
+        $I->canSeeResponseCodeIs(200);
+        $I->canSeeResponseIsJson();
+        $I->canSeeResponseContainsJson([
+            'reCaptchaPublicKey' => 'public-key',
+        ]);
+    }
+
+}