Sonata\Exporter\Test\Writer\XmlExcelWriterTest::testForceTypesWithHeaders PHP Method

    public function testForceTypesWithHeaders()
    {
        // force all cells to have Number type
        $writer = new XmlExcelWriter($this->filename, true, 'Number');
        $writer->open();
        $writer->write(array('name' => 'john', 'surname' => 'doe ', 'year' => '2001'));
        $writer->close();
        $expected = '<Row><Cell><Data ss:Type="String">name</Data></Cell><Cell><Data ss:Type="String">surname</Data></Cell><Cell><Data ss:Type="String">year</Data></Cell></Row>';
        $expected .= '<Row><Cell><Data ss:Type="Number">john</Data></Cell><Cell><Data ss:Type="Number">doe </Data></Cell><Cell><Data ss:Type="Number">2001</Data></Cell></Row>';
        $this->assertTrue(strstr(file_get_contents($this->filename), $expected) !== false);
    }