These 2 tests were checking the exact set of groups a user should have.
If these tests are ran in a database where a module is previously installed which adds more groups to the base role, these exact group sets would be inexact, although the behavior that is being tested was actually properly working.
With this patch, basically I'm testing if the user contains the groups from the roles, not the exact role set expected. It should work in integration scenarios.
@Tecnativa TT20468
* FIX: Update users' groups when a role is deleted
* IMP: add some test cases to check user's groups when its last role line is removed
* FIX: ensure that the user's groups are updated when its last role line is removed
