#!/usr/bin/env python

"""

Tests the behavior of filelog w.r.t. data starting with '\1\n'

"""

from __future__ import absolute_import, print_function

from mercurial.node import (

    hex,

    nullid,

)

from mercurial import (

    hg,

    ui as uimod,

)

myui = uimod.ui.load()

repo = hg.repository(myui, path=b'.', create=True)

fl = repo.file(b'foobar')

def addrev(text, renamed=False):

    if renamed:

        # data doesn't matter. Just make sure filelog.renamed() returns True

        meta = {b'copyrev': hex(nullid), b'copy': b'bar'}

    else:

        meta = {}

    lock = t = None

    try:

        lock = repo.lock()

        t = repo.transaction(b'commit')

        node = fl.add(text, meta, t, 0, nullid, nullid)

        return node

    finally:

        if t:

            t.close()

        if lock:

            lock.release()

def error(text):

    print('ERROR: ' + text)

textwith = b'\1\nfoo'

without = b'foo'

node = addrev(textwith)

if not textwith == fl.read(node):

    error('filelog.read for data starting with \\1\\n')

if fl.cmp(node, textwith) or not fl.cmp(node, without):

    error('filelog.cmp for data starting with \\1\\n')

if fl.size(0) != len(textwith):

    error(

        'FIXME: This is a known failure of filelog.size for data starting '

        'with \\1\\n'

    )

node = addrev(textwith, renamed=True)

if not textwith == fl.read(node):

    error('filelog.read for a renaming + data starting with \\1\\n')

if fl.cmp(node, textwith) or not fl.cmp(node, without):

    error('filelog.cmp for a renaming + data starting with \\1\\n')

if fl.size(1) != len(textwith):

    error('filelog.size for a renaming + data starting with \\1\\n')

print('OK.')