The testing team (the so-called QA team in some organizations) insists that the development team should share their (the development team's) test cases with them. Their arguments are that the development test cases are the starting point for the QA testing.
As a development team member, I don’t understand the request. Per me, the tester should test the solution based on the requirements. I don’t know if the test team should be shared with the detailed design (low-level design) document. However, we are sharing them the detailed design.
I have read some posts here that say the QA team should share their test cases with the development team for a better solution and for better throughput. But, nothing sort of the development team sharing their test cases with the QA test team.
It looks like my QA team is very happy if I share my development unit and integration test cases and the test results.