From 9e368b9a98522b9384cd48213d38b80799cc02f4 Mon Sep 17 00:00:00 2001
From: Eino-Antti Kuuskoski <antti.kuuskoski@kotia.com>
Date: Thu, 18 Mar 2021 17:12:18 +0200
Subject: [PATCH] Ensure mock status code callback return value is non-empty

Prevents a PHP 7.4 warning:

```
array_key_exists(): The first argument should be either a string or an integer in openapi-data-mocker-server-middleware\src\Mock\OpenApiDataMockerRouteMiddleware.php on line 90
```

when customCallback returns an empty value.
---
 src/Mock/OpenApiDataMockerRouteMiddleware.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/Mock/OpenApiDataMockerRouteMiddleware.php b/src/Mock/OpenApiDataMockerRouteMiddleware.php
index 0646fd2..498593e 100644
--- a/src/Mock/OpenApiDataMockerRouteMiddleware.php
+++ b/src/Mock/OpenApiDataMockerRouteMiddleware.php
@@ -87,7 +87,7 @@ public function process(ServerRequestInterface $request, RequestHandlerInterface
         $customCallback = $this->getMockStatusCodeCallback;
         $customAfterCallback = $this->afterCallback;
         $mockedStatusCode = (is_callable($customCallback)) ? $customCallback($request, $this->responses) : null;
-        if (array_key_exists($mockedStatusCode, $this->responses)) {
+        if ($mockedStatusCode && array_key_exists($mockedStatusCode, $this->responses)) {
             // response schema successfully selected, we can mock it now
             $statusCode = ($mockedStatusCode === 'default') ? 200 : (int) $mockedStatusCode;
             $mockedResponse = (array) $this->responses[$mockedStatusCode];