Add first tests

[Nikolay Koldunov]

[Nikolay Koldunov]

Think of how automatic testing should look like. It is not clear to me how to test weinterface - have a look how they do it on streamlit. We also probably have to mock recieving data from LLM somehow.

[Antonia Jost]

Handle exception if water is being clicked (and no address can be retrieved).

[Antonia Jost]

https://docs.streamlit.io/library/api-reference/app-testing

[Antonia Jost]

Handle exception if water is being clicked (and no address can be retrieved).

This should not be an issue anymore after #31 and #(add PR number of osm branch once it's merged)