public function testReplacingARow()
{
$this->table->insert(array('firstname' => 'Llama', 'lastname' => 'Herder'));
$this->table->insert(array('firstname' => 'Frank', 'lastname' => 'Farmer'));
$this->table->replace(array('userid' => 1, 'firstname' => 'Alpaca', 'lastname' => 'Collector'));
$this->assertRowCount(2, 'select * from user');
$this->assertEquals(iterator_to_array($this->connection()->execute("select firstname from user")->column()), array('Alpaca', 'Frank'));
}