Merge pull request #45 from DavidPrevot/phpunit6

Move to namespaced phpunit versions

Author: Seldaek

tests/JsonParserTest.php

@@ -9,11 +9,12 @@
  * file that was distributed with this source code.
  */
 
+use PHPUnit\Framework\TestCase;
 use Seld\JsonLint\JsonParser;
 use Seld\JsonLint\ParsingException;
 use Seld\JsonLint\DuplicateKeyException;
 
-class JsonParserTest extends PHPUnit_Framework_TestCase
+class JsonParserTest extends TestCase
 {
     protected $json = array(
         '42', '42.3', '0.3', '-42', '-42.3', '-0.3',