--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/tests/test-logtoprocess.t	Tue Apr 05 17:39:59 2016 +0100
@@ -0,0 +1,54 @@
+Test if logtoprocess correctly captures command-related log calls.
+
+  $ hg init
+  $ cat > $TESTTMP/foocommand.py << EOF
+  > from mercurial import cmdutil
+  > from time import sleep
+  > cmdtable = {}
+  > command = cmdutil.command(cmdtable)
+  > @command('foo', [])
+  > def foo(ui, repo):
+  >     ui.log('foo', 'a message: %(bar)s\n', bar='spam')
+  > EOF
+  $ cat >> $HGRCPATH << EOF
+  > [extensions]
+  > logtoprocess=
+  > foocommand=$TESTTMP/foocommand.py
+  > [logtoprocess]
+  > command=echo 'logtoprocess command output:';
+  >     echo "\$EVENT";
+  >     echo "\$MSG1";
+  >     echo "\$MSG2"
+  > commandfinish=echo 'logtoprocess commandfinish output:';
+  >     echo "\$EVENT";
+  >     echo "\$MSG1";
+  >     echo "\$MSG2";
+  >     echo "\$MSG3"
+  > foo=echo 'logtoprocess foo output:';
+  >     echo "\$EVENT";
+  >     echo "\$MSG1";
+  >     echo "\$OPT_BAR"
+  > EOF
+
+Running a command triggers both a ui.log('command') and a
+ui.log('commandfinish') call. The foo command also uses ui.log.
+
+Use head to ensure we wait for all lines to be produced, and sort to avoid
+ordering issues between the various processes we spawn:
+  $ hg foo | head -n 17 | sort
+  
+  
+  
+  0
+  a message: spam
+  command
+  commandfinish
+  foo
+  foo
+  foo
+  foo
+  foo exited 0 after * seconds (glob)
+  logtoprocess command output:
+  logtoprocess commandfinish output:
+  logtoprocess foo output:
+  spam