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

api/tests/functional/RefreshTokenCest.php

@@ -0,0 +1,32 @@
+<?php
+namespace api\tests\functional;
+
+use api\tests\_pages\AuthenticationRoute;
+use api\tests\FunctionalTester;
+
+class RefreshTokenCest {
+
+    public function testRefreshInvalidToken(FunctionalTester $I) {
+        $route = new AuthenticationRoute($I);
+
+        $I->wantTo('get error.refresh_token_not_exist if passed token is invalid');
+        $route->refreshToken('invalid-token');
+        $I->canSeeResponseCodeIs(200);
+        $I->canSeeResponseContainsJson([
+            'success' => false,
+            'errors' => [
+                'refresh_token' => 'error.refresh_token_not_exist',
+            ],
+        ]);
+    }
+
+    public function testRefreshToken(FunctionalTester $I) {
+        $route = new AuthenticationRoute($I);
+
+        $I->wantTo('get new access_token by my refresh_token');
+        $route->refreshToken('SOutIr6Seeaii3uqMVy3Wan8sKFVFrNz');
+        $I->canSeeResponseCodeIs(200);
+        $I->canSeeAuthCredentials(false);
+    }
+
+}