#!/usr/bin/python3
import io
import itertools
import os.path
import subprocess


def test(input, output):
	p = subprocess.Popen([os.path.join(os.path.dirname(__file__), '.make-and-exec-binaries', 'urldecode')], text = False, stdin = subprocess.PIPE, stdout = subprocess.PIPE)
	stdout, stderr = p.communicate(input)
	assert not stderr
	assert stdout == output


BUFFER_SIZE = 1024 * 300


test(b'', b'')
test(b'a', b'a')
test(b'%', b'%')
test(b'%2', b'%2')
test(b'%20', b' ')
test(b'%gg', b'%gg')
#test(b'%\xc3\xa4', b'%\xc3\xa4')
for i in range(256):
	test(f'%{i:02X}'.encode('ascii'), bytes.fromhex(f'{i:02x}'))
	test(f'%{i:02x}'.encode('ascii'), bytes.fromhex(f'{i:02x}'))
hexbytes = tuple(f'{i:02x}' for i in range(256)) # ('00', '01', .., 'ff')
data = bytes.fromhex(''.join(map(''.join, filter(lambda x: any(c < '30' or '39' < c < '41' or '46' < c < '61' or '66' < c for c in x[1:]), itertools.product(('25',), hexbytes, hexbytes)))))
test(data, data)
for offset in range(-3, 1):
	test(b'a' * (BUFFER_SIZE + offset) + b'%25', b'a' * (BUFFER_SIZE + offset) + b'%')
	test(b'a' * (BUFFER_SIZE + offset) + b'%gg', b'a' * (BUFFER_SIZE + offset) + b'%gg')
	test(b'a' * (BUFFER_SIZE + offset) + b'%', b'a' * (BUFFER_SIZE + offset) + b'%')
	test(b'a' * (BUFFER_SIZE + offset) + b'%2', b'a' * (BUFFER_SIZE + offset) + b'%2')
	test(b'a' * (BUFFER_SIZE + offset) + b'%g', b'a' * (BUFFER_SIZE + offset) + b'%g')
for i in range(10):
	test(b'%' * i + b'%20', b'%' * i + b' ')