# coding: utf-8

from pandas.io.msgpack import packb, unpackb


def check(length, obj):
    v = packb(obj)
    assert len(v) == length, \
        "%r length should be %r but get %r" % (obj, length, len(v))
    assert unpackb(v, use_list=0) == obj


def test_1():
    for o in [None, True, False, 0, 1, (1 << 6), (1 << 7) - 1, -1,
              -((1 << 5) - 1), -(1 << 5)]:
        check(1, o)


def test_2():
    for o in [1 << 7, (1 << 8) - 1, -((1 << 5) + 1), -(1 << 7)]:
        check(2, o)


def test_3():
    for o in [1 << 8, (1 << 16) - 1, -((1 << 7) + 1), -(1 << 15)]:
        check(3, o)


def test_5():
    for o in [1 << 16, (1 << 32) - 1, -((1 << 15) + 1), -(1 << 31)]:
        check(5, o)


def test_9():
    for o in [1 << 32, (1 << 64) - 1, -((1 << 31) + 1), -(1 << 63), 1.0, 0.1,
              -0.1, -1.0]:
        check(9, o)


def check_raw(overhead, num):
    check(num + overhead, b" " * num)


def test_fixraw():
    check_raw(1, 0)
    check_raw(1, (1 << 5) - 1)


def test_raw16():
    check_raw(3, 1 << 5)
    check_raw(3, (1 << 16) - 1)


def test_raw32():
    check_raw(5, 1 << 16)


def check_array(overhead, num):
    check(num + overhead, (None, ) * num)


def test_fixarray():
    check_array(1, 0)
    check_array(1, (1 << 4) - 1)


def test_array16():
    check_array(3, 1 << 4)
    check_array(3, (1 << 16) - 1)


def test_array32():
    check_array(5, (1 << 16))


def match(obj, buf):
    assert packb(obj) == buf
    assert unpackb(buf, use_list=0) == obj


def test_match():
    cases = [
        (None, b'\xc0'),
        (False, b'\xc2'),
        (True, b'\xc3'),
        (0, b'\x00'),
        (127, b'\x7f'),
        (128, b'\xcc\x80'),
        (256, b'\xcd\x01\x00'),
        (-1, b'\xff'),
        (-33, b'\xd0\xdf'),
        (-129, b'\xd1\xff\x7f'),
        ({1: 1}, b'\x81\x01\x01'),
        (1.0, b"\xcb\x3f\xf0\x00\x00\x00\x00\x00\x00"),
        ((), b'\x90'),
        (tuple(range(15)), (b"\x9f\x00\x01\x02\x03\x04\x05\x06\x07\x08\x09"
                            b"\x0a\x0b\x0c\x0d\x0e")),
        (tuple(range(16)), (b"\xdc\x00\x10\x00\x01\x02\x03\x04\x05\x06\x07"
                            b"\x08\x09\x0a\x0b\x0c\x0d\x0e\x0f")),
        ({}, b'\x80'),
        ({x: x for x in range(15)},
         (b'\x8f\x00\x00\x01\x01\x02\x02\x03\x03\x04\x04\x05\x05\x06\x06\x07'
          b'\x07\x08\x08\t\t\n\n\x0b\x0b\x0c\x0c\r\r\x0e\x0e')),
        ({x: x for x in range(16)},
         (b'\xde\x00\x10\x00\x00\x01\x01\x02\x02\x03\x03\x04\x04\x05\x05\x06'
          b'\x06\x07\x07\x08\x08\t\t\n\n\x0b\x0b\x0c\x0c\r\r\x0e\x0e'
          b'\x0f\x0f')),
    ]

    for v, p in cases:
        match(v, p)


def test_unicode():
    assert unpackb(packb('foobar'), use_list=1) == b'foobar'
