tests/test-extension

Add support for multiple possible bisect results (issue1228, issue1182)

The real reason for both issue is that bisect can not handle cases where there
are multiple possibilities for the result.

Example (from issue1228):
rev 0 -> good
rev 1 -> skipped
rev 2 -> skipped
rev 3 -> skipped
rev 4 -> bad

Note that this patch does not only fix the reported Assertion Error but also
the problem of a non converging bisect:

hg init
for i in `seq 3`; do echo $i > $i; hg add $i; hg ci -m$i; done
hg bisect -b 2
hg bisect -g 0
hg bisect -s

From this state on, you can:
 a) mark as bad forever (non converging!)
 b) mark as good to get an inconsistent state
 c) skip for the Assertion Error

Minor description and code edits by pmezard.

#!/bin/sh
# Test basic extension support

cat > foobar.py <<EOF
import os
from mercurial import commands

def uisetup(ui):
    ui.write("uisetup called\\n")
    ui.write("ui.parentui is%s None\\n" % (ui.parentui is not None
                                           and "not" or ""))

def reposetup(ui, repo):
    ui.write("reposetup called for %s\\n" % os.path.basename(repo.root))
    ui.write("ui %s= repo.ui\\n" % (ui == repo.ui and "=" or "!"))

def foo(ui, *args, **kwargs):
    ui.write("Foo\\n")

def bar(ui, *args, **kwargs):
    ui.write("Bar\\n")

cmdtable = {
    "foo": (foo, [], "hg foo"),
    "bar": (bar, [], "hg bar"),
}

commands.norepo += ' bar'
EOF
abspath=`pwd`/foobar.py

mkdir barfoo
cp foobar.py barfoo/__init__.py
barfoopath=`pwd`/barfoo

hg init a
cd a
echo foo > file
hg add file
hg commit -m 'add file'

echo '[extensions]' >> $HGRCPATH
echo "foobar = $abspath" >> $HGRCPATH
hg foo

cd ..
hg clone a b

hg bar
echo 'foobar = !' >> $HGRCPATH

echo '% module/__init__.py-style'
echo "barfoo = $barfoopath" >> $HGRCPATH
cd a
hg foo
echo 'barfoo = !' >> $HGRCPATH

cd ..
cat > empty.py <<EOF
'''empty cmdtable
'''
cmdtable = {}
EOF
emptypath=`pwd`/empty.py
echo "empty = $emptypath" >> $HGRCPATH
hg help empty
echo 'empty = !' >> $HGRCPATH

cat > debugextension.py <<EOF
'''only debugcommands
'''
def debugfoobar(ui, repo, *args, **opts):
    "yet another debug command"
    pass

cmdtable = {"debugfoobar": (debugfoobar, (), "hg debugfoobar")}
EOF
debugpath=`pwd`/debugextension.py
echo "debugextension = $debugpath" >> $HGRCPATH
hg help debugextension
hg --debug help debugextension
echo 'debugextension = !' >> $HGRCPATH