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pytest_check
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Filename :
check_functions.py
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from __future__ import annotations import functools import sys from typing import ( Any, Callable, Container, Protocol, SupportsFloat, SupportsIndex, TypeVar, Union, ) if sys.version_info < (3, 10): # pragma: no cover from typing_extensions import ParamSpec else: from typing import ParamSpec import pytest import math from .check_log import log_failure __all__ = [ "assert_equal", "equal", "not_equal", "is_", "is_not", "is_true", "is_false", "is_none", "is_not_none", "is_nan", "is_not_nan", "is_in", "is_not_in", "is_instance", "is_not_instance", "almost_equal", "not_almost_equal", "greater", "greater_equal", "less", "less_equal", "between", "between_equal", "check_func", "fail", ] _P = ParamSpec("_P") _T = TypeVar("_T") class _ComparableGreaterThan(Protocol): def __gt__(self, other: Any) -> bool: ... # pragma: no cover class _ComparableGreaterThanOrEqual(Protocol): def __ge__(self, other: Any) -> bool: ... # pragma: no cover class _ComparableLessThan(Protocol): def __lt__(self, other: Any) -> bool: ... # pragma: no cover class _ComparableLessThanOrEqual(Protocol): def __le__(self, other: Any) -> bool: ... # pragma: no cover def check_func(func: Callable[_P, _T]) -> Callable[_P, bool]: @functools.wraps(func) def wrapper(*args: _P.args, **kwargs: _P.kwargs) -> bool: __tracebackhide__ = True try: func(*args, **kwargs) return True except AssertionError as e: log_failure(e) return False return wrapper def assert_equal(a: object, b: object, msg: str = "") -> None: # pragma: no cover assert a == b, msg def equal(a: object, b: object, msg: str = "") -> bool: __tracebackhide__ = True if a == b: return True else: log_failure(f"check {a} == {b}", msg) return False def not_equal(a: object, b: object, msg: str = "") -> bool: __tracebackhide__ = True if a != b: return True else: log_failure(f"check {a} != {b}", msg) return False def is_(a: object, b: object, msg: str = "") -> bool: __tracebackhide__ = True if a is b: return True else: log_failure(f"check {a} is {b}", msg) return False def is_not(a: object, b: object, msg: str = "") -> bool: __tracebackhide__ = True if a is not b: return True else: log_failure(f"check {a} is not {b}", msg) return False def is_true(x: object, msg: str = "") -> bool: __tracebackhide__ = True if bool(x): return True else: log_failure(f"check bool({x})", msg) return False def is_false(x: object, msg: str = "") -> bool: __tracebackhide__ = True if not bool(x): return True else: log_failure(f"check not bool({x})", msg) return False def is_none(x: object, msg: str = "") -> bool: __tracebackhide__ = True if x is None: return True else: log_failure(f"check {x} is None", msg) return False def is_not_none(x: object, msg: str = "") -> bool: __tracebackhide__ = True if x is not None: return True else: log_failure(f"check {x} is not None", msg) return False def is_nan(a: SupportsFloat | SupportsIndex, msg: str = "") -> bool: __tracebackhide__ = True if math.isnan(a): return True else: log_failure(f"check {a} is NaN", msg) return False def is_not_nan(a: SupportsFloat | SupportsIndex, msg: str = "") -> bool: __tracebackhide__ = True if not math.isnan(a): return True else: log_failure(f"check {a} is not NaN", msg) return False def is_in(a: _T, b: Container[_T], msg: str = "") -> bool: __tracebackhide__ = True if a in b: return True else: log_failure(f"check {a} in {b}", msg) return False def is_not_in(a: _T, b: Container[_T], msg: str = "") -> bool: __tracebackhide__ = True if a not in b: return True else: log_failure(f"check {a} not in {b}", msg) return False _TypeTuple = Union[type, tuple['_TypeTuple', ...]] def is_instance(a: object, b: _TypeTuple, msg: str = "") -> bool: __tracebackhide__ = True if isinstance(a, b): return True else: log_failure(f"check isinstance({a}, {b})", msg) return False def is_not_instance(a: object, b: _TypeTuple, msg: str = "") -> bool: __tracebackhide__ = True if not isinstance(a, b): return True else: log_failure(f"check not isinstance({a}, {b})", msg) return False def almost_equal( a: object, b: object, rel: Any = None, abs: Any = None, msg: str = "" ) -> bool: """ For rel and abs tolerance, see: See https://docs.pytest.org/en/latest/builtin.html#pytest.approx """ __tracebackhide__ = True if a == pytest.approx(b, rel, abs): return True else: log_failure(f"check {a} == pytest.approx({b}, rel={rel}, abs={abs})", msg) return False def not_almost_equal( a: object, b: object, rel: Any = None, abs: Any = None, msg: str = "" ) -> bool: """ For rel and abs tolerance, see: See https://docs.pytest.org/en/latest/builtin.html#pytest.approx """ __tracebackhide__ = True if a != pytest.approx(b, rel, abs): return True else: log_failure(f"check {a} != pytest.approx({b}, rel={rel}, abs={abs})", msg) return False def greater(a: _ComparableGreaterThan, b: object, msg: str = "") -> bool: __tracebackhide__ = True if a > b: return True else: log_failure(f"check {a} > {b}", msg) return False def greater_equal(a: _ComparableGreaterThanOrEqual, b: object, msg: str = "") -> bool: __tracebackhide__ = True if a >= b: return True else: log_failure(f"check {a} >= {b}", msg) return False def less(a: _ComparableLessThan, b: object, msg: str = "") -> bool: __tracebackhide__ = True if a < b: return True else: log_failure(f"check {a} < {b}", msg) return False def less_equal(a: _ComparableLessThanOrEqual, b: object, msg: str = "") -> bool: __tracebackhide__ = True if a <= b: return True else: log_failure(f"check {a} <= {b}", msg) return False def between( b: Any, a: Any, c: Any, msg: str = "", ge: bool = False, le: bool = False ) -> bool: __tracebackhide__ = True if ge and le: if a <= b <= c: return True else: log_failure(f"check {a} <= {b} <= {c}", msg) return False elif ge: if a <= b < c: return True else: log_failure(f"check {a} <= {b} < {c}", msg) return False elif le: if a < b <= c: return True else: log_failure(f"check {a} < {b} <= {c}", msg) return False else: if a < b < c: return True else: log_failure(f"check {a} < {b} < {c}", msg) return False def between_equal( b: _ComparableLessThanOrEqual, a: _ComparableLessThanOrEqual, c: object, msg:str = "", ) -> bool: __tracebackhide__ = True return between(b, a, c, msg, ge=True, le=True) def fail(msg: str) -> None: __tracebackhide__ = True log_failure(msg)