public function testCount()
{
$w = new Writer(tmpfile(), array('hasHeader' => true));
$w->write(array('id' => 1, 'first_name' => 'John', 'last_name' => 'Doe', 'birthdate' => '1972-05-22'));
$w->write(array('id' => 2, 'first_name' => 'John', 'last_name' => 'Doe', 'birthdate' => '1972-05-22'));
$w->write(array('id' => 3, 'first_name' => 'John', 'last_name' => 'Doe', 'birthdate' => '1972-05-22'));
$this->assertEquals($w->key(), 3);
}
