public function testUpdate()
{
$this->helper->insert('car', ['make' => 'volvo', 'model' => 'xc90']);
$this->helper->update('car', ['model' => 'v70'], ['make' => 'volvo']);
$cars = $this->db->queryAll('select * from car');
var_dump($cars);
$this->assertCount(1, $cars);
$this->assertEquals('volvo', $cars[0]['make']);
$this->assertEquals('v70', $cars[0]['model']);
}
