function it_returns_available_variants(ProductVariantInterface $unavailableVariant, ProductVariantInterface $variant)
{
$unavailableVariant->isAvailable()->willReturn(false);
$variant->isAvailable()->willReturn(true);
$unavailableVariant->setProduct($this)->shouldBeCalled();
$variant->setProduct($this)->shouldBeCalled();
$this->addVariant($unavailableVariant);
$this->addVariant($variant);
$this->getAvailableVariants()->shouldHaveCount(1);
$this->getAvailableVariants()->first()->shouldReturn($variant);
}