diff tests/test-profile.t @ 30316:faf1b8923da2

profiling: use vendored statprof and upstream enhancements (BC)

Now that the statprof module is vendored and suitable for use, we
switch our statprof profiler to use it. This required some minor
changes because of drift between the official statprof profiler
and the vendored copy.

We also incorporate Facebook's improvements from the "statprofext"
extension at
https://bitbucket.org/facebook/hg-experimental, notably support for
different display formats.

Because statprof output is different, this is marked as BC. Although
most users likely won't notice since most users don't profile.

--- a/tests/test-profile.t	Thu Oct 20 23:16:32 2016 +0900
+++ b/tests/test-profile.t	Fri Nov 04 20:50:38 2016 -0700
@@ -47,4 +47,49 @@
 
 #endif
 
+Install an extension that can sleep and guarantee a profiler has time to run
+
+  $ cat >> sleepext.py << EOF
+  > import time
+  > from mercurial import cmdutil, commands
+  > cmdtable = {}
+  > command = cmdutil.command(cmdtable)
+  > @command('sleep', [], 'hg sleep')
+  > def sleep(ui, *args, **kwargs):
+  >     time.sleep(0.1)
+  > EOF
+
+  $ cat >> $HGRCPATH << EOF
+  > [extensions]
+  > sleep = `pwd`/sleepext.py
+  > EOF
+
+statistical profiler works
+
+  $ HGPROF=stat hg --profile sleep 2>../out
+  $ grep Sample ../out
+  Sample count: \d+ (re)
+
+Various statprof formatters work
+
+  $ HGPROF=stat hg --profile --config profiling.statformat=byline sleep 2>../out
+  $ head -n 1 ../out
+    %   cumulative      self          
+  $ grep Sample ../out
+  Sample count: \d+ (re)
+
+  $ HGPROF=stat hg --profile --config profiling.statformat=bymethod sleep 2>../out
+  $ head -n 1 ../out
+    %   cumulative      self          
+  $ grep Sample ../out
+  Sample count: \d+ (re)
+
+  $ HGPROF=stat hg --profile --config profiling.statformat=hotpath sleep 2>../out
+  $ grep Sample ../out
+  Sample count: \d+ (re)
+
+  $ HGPROF=stat hg --profile --config profiling.statformat=json sleep 2>../out
+  $ cat ../out
+  \[\[\d+.* (re)
+
   $ cd ..