Sonata\Exporter\Test\Writer\CsvWriterTest::testWithBom PHP Method

    public function testWithBom()
    {
        $writer = new CsvWriter($this->filename, ',', '"', '', true, true);
        $writer->open();
        $writer->write(array('name' => 'Rémi , ""2"', 'surname' => 'doe ', 'year' => '2001'));
        $writer->close();
        $expected = chr(0xef) . chr(0xbb) . chr(0xbf) . 'name,surname,year' . "\n" . '"Rémi , """"2""","doe ",2001';
        $this->assertEquals($expected, trim(file_get_contents($this->filename)));
    }