diff tests/test-logtoprocess.t @ 28901:a368da441b32

logtoprocess: new experimental extension

This extension lets you direct specific ui.log() information to shell
commands, spawned in the background. This can be used to, say, capture
timings, commandfailure tracebacks, etc., making the output available
to other command-line tools.

--- /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