/**
* @dataProvider getPurchases
* @param float $p
* @param float $ds
* @param float $er
* @param float $s
* @param float $res
*/
public function testCalcs($p, $ds, $er, $s, $pp, $up, $m, $c)
{
$this->entity->setPurchase($p);
$this->entity->setDiscountSupplier($ds);
$this->entity->setExpenseRatio($er);
$this->entity->setShipping($s);
$this->assertEquals($pp, $this->entity->getPurchasePrice());
$this->entity->setUnitPrice($up);
$this->assertEquals($m, $this->entity->getMargin());
$this->assertEquals($c, $this->entity->getCoef());
$this->assertTrue($this->entity->isCoefPositive());
}