Add test case for getActiveParticipationInvitation with multiple part…

[yuanchen233]

…icipation

[Whathecode]

To keep the test focused, I added a createTwoDevicesAndRolesProtocol() test helper, which is likely to also be useful in future test cases.

I added additional assertions to verify both accounts, as well as the devices they were assigned.

Lastly, I fixed to code styles to follow the non-idiomatic style of this project. ;) I think the static checker only checks for it in main sources, or it failed here. Either way: I'll gladly polish minor stuff like that in any PR you send along. :)

[Whathecode]

I added an exception for test sources for detekt flagging destructuring operations > 3 fields.

[yuanchen233]

Thank you for the explanation and commentnt.

To keep the test focused, I added a createTwoDevicesAndRolesProtocol() test helper, which is likely to also be useful in future test cases.

I thought about re-using createComplexProtocol and expose Roles, but this information is not used by other test cases. This multi role protocol should also be relevant when adding more InputDataType.

I'll be adopting to the decision making logic (and maybe code style here)