Mercurial > hg-stable
view tests/test-arbitraryfilectx.t @ 38139:a0e4d654bceb
state: write the version number in plain text on top of state files
We will soon be using CBOR format to write the data in state files. But we
should not write the version number of the state files in CBOR format and we
should rather write it in plain text because in future we can change the format
of state files and we should be able to parse the version number of state file
without requiring to understand a certain format.
This will help us in making sure we have a good compatibility story with other
versions of state files.
Differential Revision: https://phab.mercurial-scm.org/D3579
author | Pulkit Goyal <7895pulkit@gmail.com> |
---|---|
date | Fri, 18 May 2018 16:28:45 +0530 |
parents | 9954d0e2ad00 |
children | 5361f9ed8a30 |
line wrap: on
line source
Setup: $ cat > eval.py <<EOF > from __future__ import absolute_import > import filecmp > from mercurial import commands, context, pycompat, registrar > cmdtable = {} > command = registrar.command(cmdtable) > @command(b'eval', [], b'hg eval CMD') > def eval_(ui, repo, *cmds, **opts): > cmd = b" ".join(cmds) > res = pycompat.bytestr(eval(cmd, globals(), locals())) > ui.warn(b"%s" % res) > EOF $ echo "[extensions]" >> $HGRCPATH $ echo "eval=`pwd`/eval.py" >> $HGRCPATH Arbitraryfilectx.cmp does not follow symlinks: $ mkdir case1 $ cd case1 $ hg init #if symlink $ printf "A" > real_A $ printf "foo" > A $ printf "foo" > B $ ln -s A sym_A $ hg add . adding A adding B adding real_A adding sym_A $ hg commit -m "base" #else $ hg import -q --bypass - <<EOF > # HG changeset patch > # User test > # Date 0 0 > base > > diff --git a/A b/A > new file mode 100644 > --- /dev/null > +++ b/A > @@ -0,0 +1,1 @@ > +foo > \ No newline at end of file > diff --git a/B b/B > new file mode 100644 > --- /dev/null > +++ b/B > @@ -0,0 +1,1 @@ > +foo > \ No newline at end of file > diff --git a/real_A b/real_A > new file mode 100644 > --- /dev/null > +++ b/real_A > @@ -0,0 +1,1 @@ > +A > \ No newline at end of file > diff --git a/sym_A b/sym_A > new file mode 120000 > --- /dev/null > +++ b/sym_A > @@ -0,0 +1,1 @@ > +A > \ No newline at end of file > EOF $ hg up -q #endif These files are different and should return True (different): (Note that filecmp.cmp's return semantics are inverted from ours, so we invert for simplicity): $ hg eval "context.arbitraryfilectx('A', repo).cmp(repo[None]['real_A'])" True (no-eol) $ hg eval "not filecmp.cmp('A', 'real_A')" True (no-eol) These files are identical and should return False (same): $ hg eval "context.arbitraryfilectx('A', repo).cmp(repo[None]['A'])" False (no-eol) $ hg eval "context.arbitraryfilectx('A', repo).cmp(repo[None]['B'])" False (no-eol) $ hg eval "not filecmp.cmp('A', 'B')" False (no-eol) This comparison should also return False, since A and sym_A are substantially the same in the eyes of ``filectx.cmp``, which looks at data only. $ hg eval "context.arbitraryfilectx('real_A', repo).cmp(repo[None]['sym_A'])" False (no-eol) A naive use of filecmp on those two would wrongly return True, since it follows the symlink to "A", which has different contents. #if symlink $ hg eval "not filecmp.cmp('real_A', 'sym_A')" True (no-eol) #else $ hg eval "not filecmp.cmp('real_A', 'sym_A')" False (no-eol) #endif