Add assertion for checking that ErrorEvent contains the request object

Author: J.C. Manzo

tests/OmnipayGatewayRequestSubscriberTest.php

@@ -121,6 +121,7 @@ public function testLogging($event_type, $event, array $record)
             $this->assertTrue($this->logger->hasNotice($record));
         } else if ($record['level'] === LogLevel::ERROR) {
             $this->assertInstanceOf('\Exception', $context['error']);
+            $this->assertInstanceOf('Omnipay\Common\Message\RequestInterface', $context['request']);
             $this->assertTrue($this->logger->hasErrorRecords());
             $this->assertTrue($this->logger->hasError($record));
         } else {