Added test coverage

Author: pgrigoruta

tests/Unit/Exception/InvalidResponseBodyExceptionTest.php

@@ -0,0 +1,53 @@
+<?php
+
+/**
+ * This file is part of the contentful/contentful-core package.
+ *
+ * @copyright 2015-2020 Contentful GmbH
+ * @license   MIT
+ */
+
+declare(strict_types=1);
+
+namespace Contentful\Tests\Core\Unit\Exception;
+
+use Contentful\Core\Api\Requester;
+use Contentful\Core\Exception\InvalidResponseBodyException;
+use Contentful\Tests\TestCase;
+use GuzzleHttp\Client as HttpClient;
+use GuzzleHttp\Exception\ClientException;
+use GuzzleHttp\Handler\CurlHandler;
+use GuzzleHttp\HandlerStack;
+use GuzzleHttp\Psr7\Request;
+use GuzzleHttp\Psr7\Response;
+use Psr\Http\Message\RequestInterface;
+
+class InvalidResponseBodyExceptionTest extends TestCase
+{
+    public function testInvalidResponseException()
+    {
+        $response = new Response(200, [], '{}');
+        $handler = function (RequestInterface $request, array $options) use ($response) {
+            return $response;
+        };
+        $httpClient = $this->createHttpClient($handler);
+        $requester = new Requester($httpClient, 'DELIVERY');
+
+        $request = new Request('GET', 'https://www.example.com/some-page');
+        $message = $requester->sendRequest($request);
+        $this->assertInstanceOf(InvalidResponseBodyException::class, $message->getException());
+    }
+
+    public function createHttpClient(callable $handlerOverride = \null)
+    {
+        $stack = new HandlerStack();
+        $stack->setHandler(new CurlHandler());
+        $stack->push(function (callable $handler) use ($handlerOverride) {
+            return function (RequestInterface $request, array $options) use ($handler, $handlerOverride) {
+                throw new ClientException('Foo', $request, new Response(500, [], 'FOO'));
+            };
+        });
+
+        return new HttpClient(['handler' => $stack]);
+    }
+}