Test fail after following "Contributing to Clusterio" instructions

[Laar]

I've followed the instructions in "Contribution to Clustorio" to the point that it asks to test a potential contribution via pnpm run test. Running that command gives 1 failing test:

  1) Integration of host/src/server
       _getVersion()
         should get a version from factorio's changelog.txt:
     AssertionError [ERR_ASSERTION]: Detected version 'null' does not followed the format x.y.z
      at Context.<anonymous> (test/integration/server.js:19:12)

Debugging the issue it seems to be that the cluster setup step node packages/create --dev downloads the factorio headless server in the folder factorio/[version number], while the test expects it to be in factorio. Removing the factorio headless server entirely results in 21 failing tests, without any clear indication to the cause.

For clarity for starting developers it would be useful if:

• The getVersion test works after following the install instructions.
• The testing framework would give a clear error when it could not find a factorio headless server, rather than letting tests fail that depend on it.