tests/test-repair-strip

util: improved the check for the existence of the 'buffer' builtin

2to3 is unable to translate '__builtin__' calls to 'builtins' when
hasattr is used (as in hasattr(__builtin__, buffer)). Translating the
check to the format

try:
    whatever
except NameError
    # define whatever
    __builtin__.whatever = whatever

is a correct way of checking for the name and has the benefit of being
translated by 2to3. This patch implements the same idea for the
aforementioned example.

#!/bin/sh

echo "[extensions]" >> $HGRCPATH
echo "mq=">> $HGRCPATH

teststrip() {
    hg -q up -C $1
    echo % before update $1, strip $2
    hg parents
    chmod -$3 $4
    hg strip $2 2>&1 | sed 's/\(bundle\).*/\1/' | sed 's/Permission denied.*\.hg\/store\/\(.*\)/Permission denied \.hg\/store\/\1/'
    echo % after update $1, strip $2
    chmod +$3 $4
    hg verify
    echo % journal contents
    if [ -f .hg/store/journal ]; then
        sed -e 's/\.i[^\n]*/\.i/' .hg/store/journal
    else
        echo "(no journal)"
    fi
    ls .hg/store/journal >/dev/null 2>&1 && hg recover
    ls .hg/strip-backup/* >/dev/null 2>&1 && hg unbundle -q .hg/strip-backup/*
    rm -rf .hg/strip-backup
}

hg init test
cd test

echo a > a
hg -q ci -m "a" -A

echo b > b
hg -q ci -m "b" -A

echo b2 >> b
hg -q ci -m "b2" -A

echo c > c
hg -q ci -m "c" -A
 
teststrip 0 2 w .hg/store/data/b.i
teststrip 0 2 r .hg/store/data/b.i
teststrip 0 2 w .hg/store/00manifest.i