Testsuite failure on hosts that don't have a network connection

[baldurmen]

Describe the Bug

The testsuite fails on hosts that don't have a network connection.

Here's the error log, sadly it's too long to be included directly in the issue's body:

tk_jetty9_testsuite_failure.log

Expected Behavior

The testsuite should be independent of the host's network connection. In general, tests shouldn't rely on the host having a functioning network connection, as it makes them more flaky.

Steps to Reproduce

Steps to reproduce the behavior:

1. run lein test and see that the testsuite passes
2. run LEIN_OFFLINE=true lein test and see that the testsuite still passes
3. disable the network connection on the host (for example, with sudo ifdown $INTERFACE)
4. run LEIN_OFFLINE=true lein test
5. the testsuite now fails

Environment

• Using the latest commit on the main branch (98fd16e)
• Debian Sid (but that shouldn't matter)