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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() == "a"
assert unpacker.unpack() == "b"
assert unpacker.unpack() == "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() == "a"
assert unpacker.unpack() == "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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