rhg: add RootCommand using hg-core FindRoot operation to prepare `hg root`
The println macro is not used to avoid string usage.
Dealing only with bytes allows us to be compatible with any encoding
and not just UTF8.
Later on, format macro will be made to have more readable code.
Differential Revision: https://phab.mercurial-scm.org/D8612
# Randomized torture test generation for bdiff
from __future__ import absolute_import, print_function
import random
import sys
from mercurial import (
mdiff,
pycompat,
)
def reducetest(a, b):
tries = 0
reductions = 0
print("reducing...")
while tries < 1000:
a2 = (
"\n".join(l for l in a.splitlines() if random.randint(0, 100) > 0)
+ "\n"
)
b2 = (
"\n".join(l for l in b.splitlines() if random.randint(0, 100) > 0)
+ "\n"
)
if a2 == a and b2 == b:
continue
if a2 == b2:
continue
tries += 1
try:
test1(a, b)
except Exception:
reductions += 1
tries = 0
a = a2
b = b2
print("reduced:", reductions, len(a) + len(b), repr(a), repr(b))
try:
test1(a, b)
except Exception as inst:
print("failed:", inst)
sys.exit(0)
def test1(a, b):
d = mdiff.textdiff(a, b)
if not d:
raise ValueError("empty")
c = mdiff.patches(a, [d])
if c != b:
raise ValueError("bad")
def testwrap(a, b):
try:
test1(a, b)
return
except Exception as inst:
print("exception:", inst)
reducetest(a, b)
def test(a, b):
testwrap(a, b)
testwrap(b, a)
def rndtest(size, noise):
a = []
src = " aaaaaaaabbbbccd"
for x in pycompat.xrange(size):
a.append(src[random.randint(0, len(src) - 1)])
while True:
b = [c for c in a if random.randint(0, 99) > noise]
b2 = []
for c in b:
b2.append(c)
while random.randint(0, 99) < noise:
b2.append(src[random.randint(0, len(src) - 1)])
if b2 != a:
break
a = "\n".join(a) + "\n"
b = "\n".join(b2) + "\n"
test(a, b)
maxvol = 10000
startsize = 2
while True:
size = startsize
count = 0
while size < maxvol:
print(size)
volume = 0
while volume < maxvol:
rndtest(size, 2)
volume += size
count += 2
size *= 2
maxvol *= 4
startsize *= 4