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"""Test Unpacker's read_array_header and read_map_header methods"""
from msgpack import packb, Unpacker, OutOfData
UnexpectedTypeException = ValueError
def test_read_array_header():
unpacker = Unpacker()
unpacker.feed(packb(['a', 'b', 'c']))
assert unpacker.read_array_header() == 3
assert unpacker.unpack() == b'a'
assert unpacker.unpack() == b'b'
assert unpacker.unpack() == b'c'
try:
unpacker.unpack()
assert 0, 'should raise exception'
except OutOfData:
assert 1, 'okay'
def test_read_map_header():
unpacker = Unpacker()
unpacker.feed(packb({'a': 'A'}))
assert unpacker.read_map_header() == 1
assert unpacker.unpack() == B'a'
assert unpacker.unpack() == B'A'
try:
unpacker.unpack()
assert 0, 'should raise exception'
except OutOfData:
assert 1, 'okay'
def test_incorrect_type_array():
unpacker = Unpacker()
unpacker.feed(packb(1))
try:
unpacker.read_array_header()
assert 0, 'should raise exception'
except UnexpectedTypeException:
assert 1, 'okay'
def test_incorrect_type_map():
unpacker = Unpacker()
unpacker.feed(packb(1))
try:
unpacker.read_map_header()
assert 0, 'should raise exception'
except UnexpectedTypeException:
assert 1, 'okay'
def test_correct_type_nested_array():
unpacker = Unpacker()
unpacker.feed(packb({'a': ['b', 'c', 'd']}))
try:
unpacker.read_array_header()
assert 0, 'should raise exception'
except UnexpectedTypeException:
assert 1, 'okay'
def test_incorrect_type_nested_map():
unpacker = Unpacker()
unpacker.feed(packb([{'a': 'b'}]))
try:
unpacker.read_map_header()
assert 0, 'should raise exception'
except UnexpectedTypeException:
assert 1, 'okay'
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