Merge pull request #30 from clue-labs/phpunit

Forward compatiblity with PHPUnit 6

Author: jsor

composer.json

@@ -23,6 +23,6 @@
         "react/promise": "~2.1|~1.2"
     },
     "require-dev": {
-        "phpunit/phpunit": "^5.0 || ^4.8"
+        "phpunit/phpunit": "^6.4 || ^5.7 || ^4.8.35"
     }
 }

tests/TestCase.php

@@ -2,10 +2,10 @@
 
 namespace React\Tests\Promise\Timer;
 
+use PHPUnit\Framework\TestCase as BaseTestCase;
 use React\EventLoop\Factory;
-use PHPUnit_Framework_TestCase;
 
-class TestCase extends PHPUnit_Framework_TestCase
+class TestCase extends BaseTestCase
 {
     protected $loop;