diff options
Diffstat (limited to 'test/test_memoryview.py')
-rw-r--r-- | test/test_memoryview.py | 133 |
1 files changed, 128 insertions, 5 deletions
diff --git a/test/test_memoryview.py b/test/test_memoryview.py index aed5069..f555c5b 100644 --- a/test/test_memoryview.py +++ b/test/test_memoryview.py @@ -2,11 +2,134 @@ # coding: utf-8 +from array import array from msgpack import packb, unpackb +import sys -def test_pack_memoryview(): - data = bytearray(range(256)) - view = memoryview(data) - unpacked = unpackb(packb(view)) - assert data == unpacked +# For Python < 3: +# - array type only supports old buffer interface +# - array.frombytes is not available, must use deprecated array.fromstring +if sys.version_info[0] < 3: + def __memoryview(obj): + return memoryview(buffer(obj)) + + def __make_array(f, data): + a = array(f) + a.fromstring(data) + return a + + def __get_data(a): + return a.tostring() +else: + __memoryview = memoryview + + def __make_array(f, data): + a = array(f) + a.frombytes(data) + return a + + def __get_data(a): + return a.tobytes() + + +def __run_test(format, nbytes, expected_header, expected_prefix, use_bin_type): + # create a new array + original_array = array(format) + original_array.fromlist([255] * (nbytes // original_array.itemsize)) + original_data = __get_data(original_array) + view = __memoryview(original_array) + + # pack, unpack, and reconstruct array + packed = packb(view, use_bin_type=use_bin_type) + unpacked = unpackb(packed) + reconstructed_array = __make_array(format, unpacked) + + # check that we got the right amount of data + assert len(original_data) == nbytes + # check packed header + assert packed[:1] == expected_header + # check packed length prefix, if any + assert packed[1:1+len(expected_prefix)] == expected_prefix + # check packed data + assert packed[1+len(expected_prefix):] == original_data + # check array unpacked correctly + assert original_array == reconstructed_array + + +# ----------- +# test fixstr +# ----------- + + +def test_memoryview_byte_fixstr(): + __run_test('B', 31, b'\xbf', b'', False) + + +def test_memoryview_float_fixstr(): + __run_test('f', 28, b'\xbc', b'', False) + + +# ---------- +# test str16 +# ---------- + + +def test_memoryview_byte_str16(): + __run_test('B', 2**8, b'\xda', b'\x01\x00', False) + + +def test_memoryview_float_str16(): + __run_test('f', 2**8, b'\xda', b'\x01\x00', False) + + +# ---------- +# test str32 +# ---------- + + +def test_memoryview_byte_str32(): + __run_test('B', 2**16, b'\xdb', b'\x00\x01\x00\x00', False) + + +def test_memoryview_float_str32(): + __run_test('f', 2**16, b'\xdb', b'\x00\x01\x00\x00', False) + + +# --------- +# test bin8 +# --------- + + +def test_memoryview_byte_bin8(): + __run_test('B', 1, b'\xc4', b'\x01', True) + + +def test_memoryview_float_bin8(): + __run_test('f', 4, b'\xc4', b'\x04', True) + + +# ---------- +# test bin16 +# ---------- + + +def test_memoryview_byte_bin16(): + __run_test('B', 2**8, b'\xc5', b'\x01\x00', True) + + +def test_memoryview_float_bin16(): + __run_test('f', 2**8, b'\xc5', b'\x01\x00', True) + + +# ---------- +# test bin32 +# ---------- + + +def test_memoryview_byte_bin32(): + __run_test('B', 2**16, b'\xc6', b'\x00\x01\x00\x00', True) + + +def test_memoryview_float_bin32(): + __run_test('f', 2**16, b'\xc6', b'\x00\x01\x00\x00', True) |