#!/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 edenscm.mercurial import hg, ui as uimod
from edenscm.mercurial.node import hex, nullid


myui = uimod.ui.load()
repo = hg.repository(myui, path=".", create=True)

fl = repo.file("foobar")


def addrev(text, renamed=False):
    if renamed:
        # data doesn't matter. Just make sure filelog.renamed() returns True
        meta = {"copyrev": hex(nullid), "copy": "bar"}
    else:
        meta = {}

    lock = t = None
    try:
        lock = repo.lock()
        t = repo.transaction("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 = "\1\nfoo"
without = "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.")