The tests have been detroyed while merging a refactoring for 12.0. This commit reintroduces unit tests to checks each business cases from "The Flow" into python tests. closes odoo/odoo#28323
The tests have been detroyed while merging a refactoring for 12.0. This commit reintroduces unit tests to checks each business cases from "The Flow" into python tests. closes odoo/odoo#28323