Do not apply the whitelist if it is empty

Author: mmapes

ChangeLog-4.0.md

@@ -2,6 +2,14 @@
 
 All notable changes of the PHP_CodeCoverage 4.0 release series are documented in this file using the [Keep a CHANGELOG](http://keepachangelog.com/) principles.
 
+## [4.1.0] - 2019-01-26
+
+### Should be 5.0.0 but that version already exists
+
+### Changed
+
+* Do not apply the whitelist if it is empty
+
 ## [4.0.4] - 2016-12-20
 
 ### Changed

src/Filter.php

@@ -128,7 +128,7 @@ public function isFiltered($filename)
 
         $filename = realpath($filename);
 
-        return !isset($this->whitelistedFiles[$filename]);
+        return $this->hasWhitelist() && !isset($this->whitelistedFiles[$filename]);
     }
 
     /**