@raff, yes it is true that there is extensive work done with regard to Quality Assurance for OpenMRS product. It was noted especially in terms of development, QA is well-established and is actively in use. However, there is a gap end user testing. With this in mind, the team is looking at the already available resources (test cases on Jira and automated test cases among others) to determine what can be reused or redevelop. The goal of the QA team is more focused at the inclusion of implementers and stakeholders in the testing of OpenMRS products for purposes of sustainability.
There is more information on what the QA team is planning to achieve here.