212 lines
6.6 KiB
Python
212 lines
6.6 KiB
Python
import warnings
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from sympy.testing.pytest import (raises, warns, ignore_warnings,
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warns_deprecated_sympy, Failed)
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from sympy.utilities.exceptions import sympy_deprecation_warning
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# Test callables
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def test_expected_exception_is_silent_callable():
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def f():
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raise ValueError()
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raises(ValueError, f)
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# Under pytest raises will raise Failed rather than AssertionError
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def test_lack_of_exception_triggers_AssertionError_callable():
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try:
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raises(Exception, lambda: 1 + 1)
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assert False
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except Failed as e:
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assert "DID NOT RAISE" in str(e)
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def test_unexpected_exception_is_passed_through_callable():
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def f():
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raise ValueError("some error message")
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try:
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raises(TypeError, f)
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assert False
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except ValueError as e:
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assert str(e) == "some error message"
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# Test with statement
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def test_expected_exception_is_silent_with():
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with raises(ValueError):
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raise ValueError()
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def test_lack_of_exception_triggers_AssertionError_with():
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try:
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with raises(Exception):
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1 + 1
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assert False
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except Failed as e:
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assert "DID NOT RAISE" in str(e)
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def test_unexpected_exception_is_passed_through_with():
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try:
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with raises(TypeError):
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raise ValueError("some error message")
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assert False
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except ValueError as e:
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assert str(e) == "some error message"
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# Now we can use raises() instead of try/catch
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# to test that a specific exception class is raised
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def test_second_argument_should_be_callable_or_string():
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raises(TypeError, lambda: raises("irrelevant", 42))
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def test_warns_catches_warning():
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with warnings.catch_warnings(record=True) as w:
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with warns(UserWarning):
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warnings.warn('this is the warning message')
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assert len(w) == 0
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def test_warns_raises_without_warning():
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with raises(Failed):
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with warns(UserWarning):
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pass
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def test_warns_hides_other_warnings():
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with raises(RuntimeWarning):
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with warns(UserWarning):
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warnings.warn('this is the warning message', UserWarning)
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warnings.warn('this is the other message', RuntimeWarning)
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def test_warns_continues_after_warning():
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with warnings.catch_warnings(record=True) as w:
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finished = False
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with warns(UserWarning):
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warnings.warn('this is the warning message')
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finished = True
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assert finished
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assert len(w) == 0
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def test_warns_many_warnings():
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with warns(UserWarning):
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warnings.warn('this is the warning message', UserWarning)
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warnings.warn('this is the other warning message', UserWarning)
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def test_warns_match_matching():
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with warnings.catch_warnings(record=True) as w:
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with warns(UserWarning, match='this is the warning message'):
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warnings.warn('this is the warning message', UserWarning)
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assert len(w) == 0
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def test_warns_match_non_matching():
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with warnings.catch_warnings(record=True) as w:
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with raises(Failed):
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with warns(UserWarning, match='this is the warning message'):
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warnings.warn('this is not the expected warning message', UserWarning)
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assert len(w) == 0
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def _warn_sympy_deprecation(stacklevel=3):
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sympy_deprecation_warning(
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"feature",
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active_deprecations_target="active-deprecations",
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deprecated_since_version="0.0.0",
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stacklevel=stacklevel,
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)
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def test_warns_deprecated_sympy_catches_warning():
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with warnings.catch_warnings(record=True) as w:
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with warns_deprecated_sympy():
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_warn_sympy_deprecation()
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assert len(w) == 0
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def test_warns_deprecated_sympy_raises_without_warning():
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with raises(Failed):
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with warns_deprecated_sympy():
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pass
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def test_warns_deprecated_sympy_wrong_stacklevel():
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with raises(Failed):
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with warns_deprecated_sympy():
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_warn_sympy_deprecation(stacklevel=1)
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def test_warns_deprecated_sympy_doesnt_hide_other_warnings():
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# Unlike pytest's deprecated_call, we should not hide other warnings.
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with raises(RuntimeWarning):
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with warns_deprecated_sympy():
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_warn_sympy_deprecation()
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warnings.warn('this is the other message', RuntimeWarning)
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def test_warns_deprecated_sympy_continues_after_warning():
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with warnings.catch_warnings(record=True) as w:
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finished = False
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with warns_deprecated_sympy():
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_warn_sympy_deprecation()
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finished = True
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assert finished
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assert len(w) == 0
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def test_ignore_ignores_warning():
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with warnings.catch_warnings(record=True) as w:
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with ignore_warnings(UserWarning):
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warnings.warn('this is the warning message')
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assert len(w) == 0
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def test_ignore_does_not_raise_without_warning():
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with warnings.catch_warnings(record=True) as w:
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with ignore_warnings(UserWarning):
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pass
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assert len(w) == 0
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def test_ignore_allows_other_warnings():
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with warnings.catch_warnings(record=True) as w:
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# This is needed when pytest is run as -Werror
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# the setting is reverted at the end of the catch_Warnings block.
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warnings.simplefilter("always")
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with ignore_warnings(UserWarning):
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warnings.warn('this is the warning message', UserWarning)
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warnings.warn('this is the other message', RuntimeWarning)
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assert len(w) == 1
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assert isinstance(w[0].message, RuntimeWarning)
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assert str(w[0].message) == 'this is the other message'
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def test_ignore_continues_after_warning():
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with warnings.catch_warnings(record=True) as w:
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finished = False
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with ignore_warnings(UserWarning):
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warnings.warn('this is the warning message')
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finished = True
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assert finished
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assert len(w) == 0
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def test_ignore_many_warnings():
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with warnings.catch_warnings(record=True) as w:
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# This is needed when pytest is run as -Werror
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# the setting is reverted at the end of the catch_Warnings block.
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warnings.simplefilter("always")
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with ignore_warnings(UserWarning):
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warnings.warn('this is the warning message', UserWarning)
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warnings.warn('this is the other message', RuntimeWarning)
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warnings.warn('this is the warning message', UserWarning)
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warnings.warn('this is the other message', RuntimeWarning)
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warnings.warn('this is the other message', RuntimeWarning)
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assert len(w) == 3
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for wi in w:
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assert isinstance(wi.message, RuntimeWarning)
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assert str(wi.message) == 'this is the other message'
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