Only use the whitelist when it's set

Author: dvdoug

src/CodeCoverage.php

@@ -483,6 +483,10 @@ private function applyCoversAnnotationFilter(RawCodeCoverageData $rawData, $line
 
     private function applyWhitelistFilter(RawCodeCoverageData $data): void
     {
+        if (!$this->filter->hasWhitelist()) {
+            return;
+        }
+
         foreach (\array_keys($data->lineCoverage()) as $filename) {
             if ($this->filter->isFiltered($filename)) {
                 $data->removeCoverageDataForFile($filename);

src/Driver/XdebugDriver.php

@@ -31,7 +31,9 @@ public function __construct(Filter $filter)
             throw new RuntimeException('xdebug.coverage_enable=On has to be set in php.ini');
         }
 
-        \xdebug_set_filter(\XDEBUG_FILTER_CODE_COVERAGE, \XDEBUG_PATH_WHITELIST, $filter->getWhitelist());
+        if ($filter->hasWhitelist()) {
+            \xdebug_set_filter(\XDEBUG_FILTER_CODE_COVERAGE, \XDEBUG_PATH_WHITELIST, $filter->getWhitelist());
+        }
 
         $this->enableDeadCodeDetection();
     }