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138 lines
3.4 KiB
Python
138 lines
3.4 KiB
Python
from __future__ import division, absolute_import, print_function
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import inspect
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import sys
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import pytest
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from numpy.core import arange
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from numpy.testing import assert_, assert_equal, assert_raises_regex
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from numpy.lib import deprecate
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import numpy.lib.utils as utils
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if sys.version_info[0] >= 3:
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from io import StringIO
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else:
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from StringIO import StringIO
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@pytest.mark.skipif(sys.flags.optimize == 2, reason="Python running -OO")
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def test_lookfor():
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out = StringIO()
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utils.lookfor('eigenvalue', module='numpy', output=out,
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import_modules=False)
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out = out.getvalue()
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assert_('numpy.linalg.eig' in out)
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@deprecate
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def old_func(self, x):
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return x
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@deprecate(message="Rather use new_func2")
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def old_func2(self, x):
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return x
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def old_func3(self, x):
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return x
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new_func3 = deprecate(old_func3, old_name="old_func3", new_name="new_func3")
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def old_func4(self, x):
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"""Summary.
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Further info.
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"""
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return x
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new_func4 = deprecate(old_func4)
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def old_func5(self, x):
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"""Summary.
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Bizarre indentation.
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"""
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return x
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new_func5 = deprecate(old_func5)
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def old_func6(self, x):
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"""
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Also in PEP-257.
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"""
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return x
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new_func6 = deprecate(old_func6)
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def test_deprecate_decorator():
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assert_('deprecated' in old_func.__doc__)
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def test_deprecate_decorator_message():
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assert_('Rather use new_func2' in old_func2.__doc__)
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def test_deprecate_fn():
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assert_('old_func3' in new_func3.__doc__)
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assert_('new_func3' in new_func3.__doc__)
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@pytest.mark.skipif(sys.flags.optimize == 2, reason="-OO discards docstrings")
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def test_deprecate_help_indentation():
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_compare_docs(old_func4, new_func4)
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_compare_docs(old_func5, new_func5)
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_compare_docs(old_func6, new_func6)
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def _compare_docs(old_func, new_func):
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old_doc = inspect.getdoc(old_func)
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new_doc = inspect.getdoc(new_func)
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index = new_doc.index('\n\n') + 2
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assert_equal(new_doc[index:], old_doc)
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@pytest.mark.skipif(sys.flags.optimize == 2, reason="-OO discards docstrings")
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def test_deprecate_preserve_whitespace():
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assert_('\n Bizarre' in new_func5.__doc__)
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def test_safe_eval_nameconstant():
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# Test if safe_eval supports Python 3.4 _ast.NameConstant
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utils.safe_eval('None')
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class TestByteBounds(object):
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def test_byte_bounds(self):
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# pointer difference matches size * itemsize
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# due to contiguity
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a = arange(12).reshape(3, 4)
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low, high = utils.byte_bounds(a)
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assert_equal(high - low, a.size * a.itemsize)
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def test_unusual_order_positive_stride(self):
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a = arange(12).reshape(3, 4)
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b = a.T
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low, high = utils.byte_bounds(b)
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assert_equal(high - low, b.size * b.itemsize)
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def test_unusual_order_negative_stride(self):
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a = arange(12).reshape(3, 4)
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b = a.T[::-1]
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low, high = utils.byte_bounds(b)
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assert_equal(high - low, b.size * b.itemsize)
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def test_strided(self):
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a = arange(12)
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b = a[::2]
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low, high = utils.byte_bounds(b)
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# the largest pointer address is lost (even numbers only in the
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# stride), and compensate addresses for striding by 2
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assert_equal(high - low, b.size * 2 * b.itemsize - b.itemsize)
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def test_assert_raises_regex_context_manager():
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with assert_raises_regex(ValueError, 'no deprecation warning'):
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raise ValueError('no deprecation warning')
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