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test__exceptions.py
""" Tests of the ._exceptions module. Primarily for exercising the __str__ methods. """ import pickle import pytest import numpy as np _ArrayMemoryError = np.core._exceptions._ArrayMemoryError _UFuncNoLoopError = np.core._exceptions._UFuncNoLoopError class TestArrayMemoryError: def test_pickling(self): """ Test that _ArrayMemoryError can be pickled """ error = _ArrayMemoryError((1023,), np.dtype(np.uint8)) res = pickle.loads(pickle.dumps(error)) assert res._total_size == error._total_size def test_str(self): e = _ArrayMemoryError((1023,), np.dtype(np.uint8)) str(e) # not crashing is enough # testing these properties is easier than testing the full string repr def test__size_to_string(self): """ Test e._size_to_string """ f = _ArrayMemoryError._size_to_string Ki = 1024 assert f(0) == '0 bytes' assert f(1) == '1 bytes' assert f(1023) == '1023 bytes' assert f(Ki) == '1.00 KiB' assert f(Ki+1) == '1.00 KiB' assert f(10*Ki) == '10.0 KiB' assert f(int(999.4*Ki)) == '999. KiB' assert f(int(1023.4*Ki)) == '1023. KiB' assert f(int(1023.5*Ki)) == '1.00 MiB' assert f(Ki*Ki) == '1.00 MiB' # 1023.9999 Mib should round to 1 GiB assert f(int(Ki*Ki*Ki*0.9999)) == '1.00 GiB' assert f(Ki*Ki*Ki*Ki*Ki*Ki) == '1.00 EiB' # larger than sys.maxsize, adding larger prefixes isn't going to help # anyway. assert f(Ki*Ki*Ki*Ki*Ki*Ki*123456) == '123456. EiB' def test__total_size(self): """ Test e._total_size """ e = _ArrayMemoryError((1,), np.dtype(np.uint8)) assert e._total_size == 1 e = _ArrayMemoryError((2, 4), np.dtype((np.uint64, 16))) assert e._total_size == 1024 class TestUFuncNoLoopError: def test_pickling(self): """ Test that _UFuncNoLoopError can be pickled """ assert isinstance(pickle.dumps(_UFuncNoLoopError), bytes) @pytest.mark.parametrize("args", [ (2, 1, None), (2, 1, "test_prefix"), ("test message",), ]) class TestAxisError: def test_attr(self, args): """Validate attribute types.""" exc = np.AxisError(*args) if len(args) == 1: assert exc.axis is None assert exc.ndim is None else: axis, ndim, *_ = args assert exc.axis == axis assert exc.ndim == ndim def test_pickling(self, args): """Test that `AxisError` can be pickled.""" exc = np.AxisError(*args) exc2 = pickle.loads(pickle.dumps(exc)) assert type(exc) is type(exc2) for name in ("axis", "ndim", "args"): attr1 = getattr(exc, name) attr2 = getattr(exc2, name) assert attr1 == attr2, name
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