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#!/usr/bin/env python

import pytest

from msgpack import (

ExtType,

Packer,

PackOverflowError,

PackValueError,

Unpacker,

UnpackValueError,

packb,

unpackb,

)

def test_integer():

x = -(2**63)

assert unpackb(packb(x)) == x

with pytest.raises(PackOverflowError):

packb(x - 1)

x = 2**64 - 1

assert unpackb(packb(x)) == x

with pytest.raises(PackOverflowError):

packb(x + 1)

def test_array_header():

packer = Packer()

packer.pack_array_header(2**32 - 1)

with pytest.raises(PackValueError):

packer.pack_array_header(2**32)

def test_map_header():

packer = Packer()

packer.pack_map_header(2**32 - 1)

with pytest.raises(PackValueError):

packer.pack_array_header(2**32)

def test_max_str_len():

d = "x" * 3

packed = packb(d)

unpacker = Unpacker(max_str_len=3, raw=False)

unpacker.feed(packed)

assert unpacker.unpack() == d

unpacker = Unpacker(max_str_len=2, raw=False)

with pytest.raises(UnpackValueError):

unpacker.feed(packed)

unpacker.unpack()

def test_max_bin_len():

d = b"x" * 3

packed = packb(d, use_bin_type=True)

unpacker = Unpacker(max_bin_len=3)

unpacker.feed(packed)

assert unpacker.unpack() == d

unpacker = Unpacker(max_bin_len=2)

with pytest.raises(UnpackValueError):

unpacker.feed(packed)

unpacker.unpack()

def test_max_array_len():

d = [1, 2, 3]

packed = packb(d)

unpacker = Unpacker(max_array_len=3)

unpacker.feed(packed)

assert unpacker.unpack() == d

unpacker = Unpacker(max_array_len=2)

with pytest.raises(UnpackValueError):

unpacker.feed(packed)

unpacker.unpack()

def test_max_map_len():

d = {1: 2, 3: 4, 5: 6}

packed = packb(d)

unpacker = Unpacker(max_map_len=3, strict_map_key=False)

unpacker.feed(packed)

assert unpacker.unpack() == d

unpacker = Unpacker(max_map_len=2, strict_map_key=False)

with pytest.raises(UnpackValueError):

unpacker.feed(packed)

unpacker.unpack()

def test_max_ext_len():

d = ExtType(42, b"abc")

packed = packb(d)

unpacker = Unpacker(max_ext_len=3)

unpacker.feed(packed)

assert unpacker.unpack() == d

unpacker = Unpacker(max_ext_len=2)

with pytest.raises(UnpackValueError):

unpacker.feed(packed)

unpacker.unpack()

# PyPy fails following tests because of constant folding?

# https://bugs.pypy.org/issue1721

# @pytest.mark.skipif(True, reason="Requires very large memory.")

# def test_binary():

# x = b'x' * (2**32 - 1)

# assert unpackb(packb(x)) == x

# del x

# x = b'x' * (2**32)

# with pytest.raises(ValueError):

# packb(x)

#

#

# @pytest.mark.skipif(True, reason="Requires very large memory.")

# def test_string():

# x = 'x' * (2**32 - 1)

# assert unpackb(packb(x)) == x

# x += 'y'

# with pytest.raises(ValueError):

# packb(x)

#

#

# @pytest.mark.skipif(True, reason="Requires very large memory.")

# def test_array():

# x = [0] * (2**32 - 1)

# assert unpackb(packb(x)) == x

# x.append(0)

# with pytest.raises(ValueError):

# packb(x)

# auto max len

def test_auto_max_array_len():

packed = b"\xde\x00\x06zz"

with pytest.raises(UnpackValueError):

unpackb(packed, raw=False)

unpacker = Unpacker(max_buffer_size=5, raw=False)

unpacker.feed(packed)

with pytest.raises(UnpackValueError):

unpacker.unpack()

def test_auto_max_map_len():

# len(packed) == 6 -> max_map_len == 3

packed = b"\xde\x00\x04zzz"

with pytest.raises(UnpackValueError):

unpackb(packed, raw=False)

unpacker = Unpacker(max_buffer_size=6, raw=False)

unpacker.feed(packed)

with pytest.raises(UnpackValueError):

unpacker.unpack()