It took me ages to find out how to do this — it is such a simple thing that no-one ever seems to mention it. Assuming that you have a process registered to foo:
register(foo, Pid).
you send it a message from the current node by doing:
foo ! "hello".
and you send it a message from another node by doing:
{ foo, node_name@othernode } ! "hello".
There is a long-standing issue with the way that ant’s JUnit task runs tests. The default behaviour is to fork off a new JVM for each test - which is *very* slow, particularly if you are doing something like GWT Unit Tests.
In this case, the whole GWT environment bootstrap (about 20 seconds on our cruise box) happens once per test. Ouch.Fortunately there is a solution, in ant 1.6.2 and above - use the forkMode attribute :
<junit fork="true" forkMode="once" ...
See the junit tag documentation for more details :
http://ant.apache.org/manual/OptionalTasks/junit.html
I was trying to start a server on the test environment with “script/server -e test”, but it turns out that lighttpd ignores that parameter - silently. So I was getting a server on the development environment instead.
You can get around this by using the webrick server:
script/server webrick -e test
