ProductTest::testChangeExistingProductVariantAndSaveProduct

public function testChangeExistingProductVariantAndSaveProduct(): void
{
	$product = $this->loadExistingProduct();

	foreach ($product->getSkuCollection() as $sku)
	{
		$sku->setField('NAME', 'TEST');
		$this->assertTrue($sku->isChanged());
		$this->assertEquals('TEST', $sku->getField('NAME'));
	}

	$this->assertTrue($product->isChanged());
	$this->assertTrue($product->getSkuCollection()->isChanged());

	$product->save();

	$this->assertFalse($product->isChanged());
	$this->assertFalse($product->getSkuCollection()->isChanged());

	foreach ($product->getSkuCollection() as $sku)
	{
		$this->assertFalse($sku->isChanged());
		$this->assertEquals('TEST', $sku->getField('NAME'));
	}
}