Write tests for HTTP endpoints

[jamiehewitt15]

We can use a library like supertest to test the HTTP endpoints. There are some examples in the documentation of how it can work with express.

[jamiehewitt15]

These tests don't need to necessarily check all the logic that we have already tested elsewhere. The value in these additional tests would come from specifically testing the logic in src/components/httpRoutes which would include things like:

• checking the correct response codes
• checking the validation of the request that we have used.

[alexcos20]

from @bogdanfazakas Investigate https://playwright.dev/