96 lines
2.5 KiB
Python
96 lines
2.5 KiB
Python
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from array import array
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from srsly.msgpack import packb, unpackb
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make_memoryview = memoryview
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def make_array(f, data):
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a = array(f)
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a.frombytes(data)
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return a
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def get_data(a):
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return a.tobytes()
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def _runtest(format, nbytes, expected_header, expected_prefix, use_bin_type):
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# create a new array
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original_array = array(format)
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original_array.fromlist([255] * (nbytes // original_array.itemsize))
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original_data = get_data(original_array)
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view = make_memoryview(original_array)
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# pack, unpack, and reconstruct array
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packed = packb(view, use_bin_type=use_bin_type)
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unpacked = unpackb(packed)
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reconstructed_array = make_array(format, unpacked)
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# check that we got the right amount of data
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assert len(original_data) == nbytes
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# check packed header
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assert packed[:1] == expected_header
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# check packed length prefix, if any
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assert packed[1 : 1 + len(expected_prefix)] == expected_prefix
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# check packed data
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assert packed[1 + len(expected_prefix) :] == original_data
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# check array unpacked correctly
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assert original_array == reconstructed_array
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def test_fixstr_from_byte():
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_runtest("B", 1, b"\xa1", b"", False)
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_runtest("B", 31, b"\xbf", b"", False)
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def test_fixstr_from_float():
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_runtest("f", 4, b"\xa4", b"", False)
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_runtest("f", 28, b"\xbc", b"", False)
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def test_str16_from_byte():
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_runtest("B", 2 ** 8, b"\xda", b"\x01\x00", False)
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_runtest("B", 2 ** 16 - 1, b"\xda", b"\xff\xff", False)
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def test_str16_from_float():
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_runtest("f", 2 ** 8, b"\xda", b"\x01\x00", False)
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_runtest("f", 2 ** 16 - 4, b"\xda", b"\xff\xfc", False)
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def test_str32_from_byte():
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_runtest("B", 2 ** 16, b"\xdb", b"\x00\x01\x00\x00", False)
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def test_str32_from_float():
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_runtest("f", 2 ** 16, b"\xdb", b"\x00\x01\x00\x00", False)
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def test_bin8_from_byte():
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_runtest("B", 1, b"\xc4", b"\x01", True)
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_runtest("B", 2 ** 8 - 1, b"\xc4", b"\xff", True)
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def test_bin8_from_float():
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_runtest("f", 4, b"\xc4", b"\x04", True)
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_runtest("f", 2 ** 8 - 4, b"\xc4", b"\xfc", True)
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def test_bin16_from_byte():
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_runtest("B", 2 ** 8, b"\xc5", b"\x01\x00", True)
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_runtest("B", 2 ** 16 - 1, b"\xc5", b"\xff\xff", True)
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def test_bin16_from_float():
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_runtest("f", 2 ** 8, b"\xc5", b"\x01\x00", True)
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_runtest("f", 2 ** 16 - 4, b"\xc5", b"\xff\xfc", True)
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def test_bin32_from_byte():
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_runtest("B", 2 ** 16, b"\xc6", b"\x00\x01\x00\x00", True)
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def test_bin32_from_float():
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_runtest("f", 2 ** 16, b"\xc6", b"\x00\x01\x00\x00", True)
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