public function testRowStyle()
{
$grid = new Datagrid();
$this->assertFalse($grid->hasRowStyles());
$grid->addRowStyle($this->getMock('ZfcDatagrid\\Column\\Style\\Bold'));
$this->assertCount(1, $grid->getRowStyles());
$this->assertTrue($grid->hasRowStyles());
$grid->addRowStyle($this->getMock('ZfcDatagrid\\Column\\Style\\Italic'));
$this->assertCount(2, $grid->getRowStyles());
$this->assertTrue($grid->hasRowStyles());
}