public function testSheetsWidthFieldHeaderAsXml()
 {
     $reader = new SpreadsheetReader();
     $sheets = $reader->read('test.excel2k_2.xml', SpreadsheetReader::READ_HASH);
     $this->assertTrue($sheets !== false);
     $this->assertEquals(2, count($sheets));
     $this->assertEquals(45665, $sheets[0][0]['EAN13']);
     $this->assertEquals('BVCF', $sheets[1][1]['NAME']);
     $xmlString = $reader->asXml($sheets);
     //file_put_contents('test.asXml_sample2.xml', $xmlString);
     $sampleXmlString = file_get_contents('test.asXml_sample2.xml');
     $this->assertTrue($sampleXmlString == $xmlString);
     //$this->assertEquals($sampleXmlString, $xmlString);
 }