upstream/mercurial-mirror Files · contrib/bdiff-torture.py

pycompat: custom implementation of urllib.parse.quote()...

pycompat: custom implementation of urllib.parse.quote() urllib.parse.quote() accepts either str or bytes and returns str. There exists a urllib.parse.quote_from_bytes() which only accepts bytes. We should probably use that to retain strong typing and avoid surprises. In addition, since nearly all strings in Mercurial are bytes, we probably don't want quote() returning unicode. So, this patch implements a custom quote() that only accepts bytes and returns bytes. The quoted URL should only contain URL safe characters which is a strict subset of ASCII. So `.encode('ascii', 'strict')` should be safe.

Yuya Nishihara - - Load All Authors

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      # Randomized torture test generation for bdiff

      from __future__ import absolute_import, print_function

      import random

      import sys

      from mercurial import (

          bdiff,

          mpatch,

      )

      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 as inst:

                  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 = bdiff.bdiff(a, b)

          if not d:

              raise ValueError("empty")

          c = mpatch.patches(a, [d])

          if c != b:

              raise ValueError("bad")

      def testwrap(a, b):

          try:

              test1(a, b)

              return

          except Exception as inst:

              pass

          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 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

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				# Randomized torture test generation for bdiff

				from __future__ import absolute_import, print_function
				import random
				import sys

				from mercurial import (
				bdiff,
				mpatch,
				)

				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 as inst:
				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 = bdiff.bdiff(a, b)
				if not d:
				raise ValueError("empty")
				c = mpatch.patches(a, [d])
				if c != b:
				raise ValueError("bad")

				def testwrap(a, b):
				try:
				test1(a, b)
				return
				except Exception as inst:
				pass
				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 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