annotate tests/test-issue2137.t @ 30237:94ef2f00b8a4 stable

tests: use basic format code "%Y" instead of "%s" for test portability

On Windows, strftime() doesn't support format code "%s", and it causes
"invalid format string" error.

    https://msdn.microsoft.com/en-us/library/fe06s4ak.aspx

test-command-template.t examines not seconds value in UTC, but
arithmetic calculation. Therefore, using format code "%Y" instead of
"%s" should be reasonable.

FYI:

- Python standard library reference doesn't list "%s" up in format
  code list required for "C standard (1989 version)", even though it
  also mentions that additional format codes are required for "C
  standard (1999 version)"

  https://docs.python.org/2.7/library/datetime.html#strftime-and-strptime-behavior

- The Open Group Base Specifications Issue 7 (IEEE Std 1003.1-2008,
  2016 Edition) doesn't require strftime to support format code "%s"

  http://pubs.opengroup.org/onlinepubs/9699919799/functions/strftime.html

- "man strftime" of (Open/Oracle) Solaris and Mac OS X (= UNIX
  certified OSs) describes about format code "%s"

https://bz.mercurial-scm.org/2137

Setup:

create a little extension that has 3 side-effects:
1) ensure changelog data is not inlined
2) make revlog to use lazyparser
3) test that repo.lookup() works
1 and 2 are preconditions for the bug; 3 is the bug.

  $ cat > commitwrapper.py <<EOF
  > from mercurial import extensions, node, revlog
  > 
  > def reposetup(ui, repo):
  >     class wraprepo(repo.__class__):
  >         def commit(self, *args, **kwargs):
  >             result = super(wraprepo, self).commit(*args, **kwargs)
  >             tip1 = node.short(repo.changelog.tip())
  >             tip2 = node.short(repo.lookup(tip1))
  >             assert tip1 == tip2
  >             ui.write('new tip: %s\n' % tip1)
  >             return result
  >     repo.__class__ = wraprepo
  > 
  > def extsetup(ui):
  >     revlog._maxinline = 8             # split out 00changelog.d early
  >     revlog._prereadsize = 8           # use revlog.lazyparser
  > EOF

  $ cat >> $HGRCPATH <<EOF
  > [extensions]
  > commitwrapper = `pwd`/commitwrapper.py
  > EOF

  $ hg init repo1
  $ cd repo1
  $ echo a > a
  $ hg commit -A -m'add a with a long commit message to make the changelog a bit bigger'
  adding a
  new tip: 553596fad57b

Test that new changesets are visible to repo.lookup():

  $ echo a >> a
  $ hg commit -m'one more commit to demonstrate the bug'
  new tip: 799ae3599e0e

  $ hg tip
  changeset:   1:799ae3599e0e
  tag:         tip
  user:        test
  date:        Thu Jan 01 00:00:00 1970 +0000
  summary:     one more commit to demonstrate the bug
  

  $ cd ..