Sales: Add unit test for validator model class#17876

magento-engcom-team merged 2 commits intomagento:2.2-developmagento/magento2:2.2-developfrom

dmytro-ch:2.2-unit-test-sales-validator-modeldmytro-ch/magento2:2.2-unit-test-sales-validator-modelCopy head branch name to clipboard