Use PHPUnit\Framework\TestCase instead of PHPUnit_Framework_TestCase (#202)

Author: carusogabriel

Tests/PrefixedCachePoolTest.php

@@ -12,13 +12,14 @@
 namespace Cache\Prefixed\Tests;
 
 use Cache\Prefixed\PrefixedCachePool;
+use PHPUnit\Framework\TestCase;
 use Psr\Cache\CacheItemInterface;
 use Psr\Cache\CacheItemPoolInterface;
 
 /**
  * @author Tobias Nyholm <[email protected]>
  */
-class PrefixedCachePoolTest extends \PHPUnit_Framework_TestCase
+class PrefixedCachePoolTest extends TestCase
 {
     /**
      * @return \PHPUnit_Framework_MockObject_MockObject|CacheItemPoolInterface

Tests/PrefixedSimpleCacheTest.php

@@ -12,14 +12,15 @@
 namespace Cache\Prefixed\Tests;
 
 use Cache\Prefixed\PrefixedSimpleCache;
+use PHPUnit\Framework\TestCase;
 use Psr\SimpleCache\CacheInterface;
 
 /**
  * Description of PrefixedSimpleCacheTest.
  *
  * @author ndobromirov
  */
-class PrefixedSimpleCacheTest extends \PHPUnit_Framework_TestCase
+class PrefixedSimpleCacheTest extends TestCase
 {
     /**
      * @param string $method    Method name to mock.