Mpdf Caching

Mpdf caches font data in a temporary directory. When running the test suite, it uses different directories for samples vs. normal tests. One is sufficient. This will slightly reduce disk usage and overhead when running test suite.

src/PhpSpreadsheet/Helper/Sample.php

@@ -5,7 +5,6 @@ namespace PhpOffice\PhpSpreadsheet\Helper;
 use PhpOffice\PhpSpreadsheet\IOFactory;
 use PhpOffice\PhpSpreadsheet\Spreadsheet;
 use PhpOffice\PhpSpreadsheet\Writer\IWriter;
-use PhpOffice\PhpSpreadsheet\Writer\Pdf;
 use RecursiveDirectoryIterator;
 use RecursiveIteratorIterator;
 use RecursiveRegexIterator;
@@ -119,11 +118,6 @@ class Sample
         foreach ($writers as $writerType) {
             $path = $this->getFilename($filename, mb_strtolower($writerType));
             $writer = IOFactory::createWriter($spreadsheet, $writerType);
-            if ($writer instanceof Pdf) {
-                // PDF writer needs temporary directory
-                $tempDir = $this->getTemporaryFolder();
-                $writer->setTempDir($tempDir);
-            }
             $callStartTime = microtime(true);
             $writer->save($path);
             $this->logWrite($writer, $path, $callStartTime);