Fix compatibility for PHPUnit 5 and 6

Author: adrium

tests/EnumTest.php

@@ -250,13 +250,27 @@ public function testUnserialize()
     }
 
     /**
-     * @expectedException \PHPUnit_Framework_Error_Notice
+     * __wakeup()
      */
     public function testUnserializeError()
     {
+        $this->expectError('Notice');
         $ser = 'O:30:"MyCLabs\Tests\Enum\EnumFixture":2:{'
              . 's:23:"#MyCLabs\Enum\Enum#name";s:3:"FOO";'
              . 's:24:"#MyCLabs\Enum\Enum#value";s:3:"foo";}';
         $foo = unserialize(strtr($ser, "#", "\0"));
     }
+
+    /**
+     * Set expectedException for errors
+     * @param string $name Exception
+     */
+    private function expectError($name)
+    {
+        $ex = "PHPUnit_Framework_Error_$name";
+        if (class_exists($ex))
+            $this->expectException($ex);
+        else
+            $this->expectException(strtr($ex, '_', '\\'));
+    }
 }