tests/test-copy2

py3kcompat: added a "compatibility layer" for py3k

This patch adds some ugly constructs. The first of them is bytesformatter, a
function that formats strings like when '%' is called. The main motivation for
this function is py3k's strange behavior:

>>> 'foo %s' % b'bar'
"foo b'bar'"
>>> b'foo %s' % b'bar'
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
TypeError: unsupported operand type(s) for %: 'bytes' and 'bytes'
>>> b'foo %s' % 'bar'
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
TypeError: unsupported operand type(s) for %: 'bytes' and 'str'

In other words, if we can't format bytes with bytes, and recall that all
mercurial strings will be converted by a fixer, then things will break badly if
we don't take a similar approach.

The other addition with this patch is that the os.environ dictionary is
monkeypatched to have bytes items. Hopefully this won't be needed in the
future, as python 3.2 might get a os.environb dictionary that holds bytes
items.

#!/bin/sh

hg init
echo foo > foo
echo "# should fail - foo is not managed"
hg mv foo bar
hg st -A
hg add foo
echo "# dry-run; print a warning that this is not a real copy; foo is added"
hg mv --dry-run foo bar
hg st -A
echo "# should print a warning that this is not a real copy; bar is added"
hg mv foo bar
hg st -A
echo "# should print a warning that this is not a real copy; foo is added"
hg cp bar foo
hg rm -f bar
rm bar
hg st -A
hg commit -m1

echo "# copy --after to a nonexistant target filename"
hg cp -A foo dummy

echo "# dry-run; should show that foo is clean"
hg copy --dry-run foo bar
hg st -A
echo "# should show copy"
hg copy foo bar
hg st -C

echo "# shouldn't show copy"
hg commit -m2
hg st -C

echo "# should match"
hg debugindex .hg/store/data/foo.i
hg debugrename bar

echo bleah > foo
echo quux > bar
hg commit -m3

echo "# should not be renamed"
hg debugrename bar

hg copy -f foo bar
echo "# should show copy"
hg st -C
hg commit -m3

echo "# should show no parents for tip"
hg debugindex .hg/store/data/bar.i
echo "# should match"
hg debugindex .hg/store/data/foo.i
hg debugrename bar

echo "# should show no copies"
hg st -C

echo "# copy --after on an added file"
cp bar baz
hg add baz
hg cp -A bar baz
hg st -C

echo "# foo was clean:"
hg st -AC foo
echo "# but it's considered modified after a copy --after --force"
hg copy -Af bar foo
hg st -AC foo

exit 0