To run tests against a Jitsi-Meet instance running on https://meet.example.com use:
ant test -Djitsi-meet.instance.url="https://meet.example.com"
To specify a list of tests to run, instead of the default of running all tests, set the jitsi-meet.tests.toRun property to a comma-separated list of class names (relative to org.jitsi.meet.test):
ant test -Djitsi-meet.instance.url="https://meet.example.com" -Djitsi-meet.tests.toRun="MuteTest,TCPTest"
To disable certain tests from being run set the jitsi-meet.tests.toExclude property:
ant test -Djitsi-meet.instance.url="https://meet.example.com" -Djitsi-meet.tests.toExclude="EtherpadTests"
Note that SetupConference will always be run as the first test, and DisposeConference will always be run as the last test.