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https://github.com/msgpack/msgpack-python.git
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33e0e86f4e
* use isort * fallback: use BytesIO instead of StringIO. We had dropped Python 2 already.
82 lines
2.1 KiB
Python
82 lines
2.1 KiB
Python
#!/usr/bin/env python
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from pytest import raises
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from msgpack import packb, unpackb
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def _decode_complex(obj):
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if b"__complex__" in obj:
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return complex(obj[b"real"], obj[b"imag"])
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return obj
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def _encode_complex(obj):
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if isinstance(obj, complex):
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return {b"__complex__": True, b"real": 1, b"imag": 2}
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return obj
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def test_encode_hook():
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packed = packb([3, 1 + 2j], default=_encode_complex)
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unpacked = unpackb(packed, use_list=1)
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assert unpacked[1] == {b"__complex__": True, b"real": 1, b"imag": 2}
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def test_decode_hook():
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packed = packb([3, {b"__complex__": True, b"real": 1, b"imag": 2}])
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unpacked = unpackb(packed, object_hook=_decode_complex, use_list=1)
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assert unpacked[1] == 1 + 2j
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def test_decode_pairs_hook():
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packed = packb([3, {1: 2, 3: 4}])
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prod_sum = 1 * 2 + 3 * 4
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unpacked = unpackb(
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packed,
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object_pairs_hook=lambda lst: sum(k * v for k, v in lst),
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use_list=1,
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strict_map_key=False,
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)
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assert unpacked[1] == prod_sum
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def test_only_one_obj_hook():
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with raises(TypeError):
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unpackb(b"", object_hook=lambda x: x, object_pairs_hook=lambda x: x)
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def test_bad_hook():
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with raises(TypeError):
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packed = packb([3, 1 + 2j], default=lambda o: o)
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unpackb(packed, use_list=1)
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def _arr_to_str(arr):
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return "".join(str(c) for c in arr)
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def test_array_hook():
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packed = packb([1, 2, 3])
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unpacked = unpackb(packed, list_hook=_arr_to_str, use_list=1)
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assert unpacked == "123"
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class DecodeError(Exception):
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pass
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def bad_complex_decoder(o):
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raise DecodeError("Ooops!")
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def test_an_exception_in_objecthook1():
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with raises(DecodeError):
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packed = packb({1: {"__complex__": True, "real": 1, "imag": 2}})
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unpackb(packed, object_hook=bad_complex_decoder, strict_map_key=False)
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def test_an_exception_in_objecthook2():
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with raises(DecodeError):
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packed = packb({1: [{"__complex__": True, "real": 1, "imag": 2}]})
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unpackb(packed, list_hook=bad_complex_decoder, use_list=1, strict_map_key=False)
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