Run vendor phpunit

.travis.yml

@@ -1,7 +1,6 @@
 sudo: false
 language: php
 php:
-  - 5.6
   - 7.2
 
 notifications:
@@ -10,6 +9,6 @@ notifications:
 install:
   - composer install --dev --no-interaction
 script:
-  - phpunit --configuration Tests/phpunit.xml
+  - ./vendor/bin/phpunit --configuration Tests/phpunit.xml
 after_script:
   - ./.codeclimate.sh

Tests/Tests.php

@@ -1,4 +1,5 @@
 <?php
+	use PHPUnit\Framework\TestCase;
 	use xPaw\SourceQuery\BaseSocket;
 	use xPaw\SourceQuery\Exception\InvalidPacketException;
 	use xPaw\SourceQuery\SourceQuery;
@@ -61,7 +62,7 @@
 		}
 	}
 	
-	class SourceQueryTests extends PHPUnit_Framework_TestCase
+	class SourceQueryTests extends TestCase
 	{
 		private $Socket;
 		private $SourceQuery;

composer.json

@@ -29,7 +29,7 @@
 	},
 	"require-dev":
 	{
-		"phpunit/phpunit": "4.8.*",
+		"phpunit/phpunit": "^6.0",
 		"codeclimate/php-test-reporter": "dev-master"
 	},
 	"autoload":