Unit test for runtime

[open-junius]

Is your feature request related to a problem? Please describe.

Now, we don't have the test for runtime to verified the pallets, their configuration, rpc and so on

Describe the solution you'd like

Follow the solution from upstream, the reference like https://github.com/polkadot-fellows/runtimes/blob/main/integration-tests/emulated/tests/collectives/collectives-polkadot/src/tests/fellowship_treasury.rs.

Describe alternatives you've considered

No response

Additional context

No response