Function assert_all_examples

hypothesis/tests/common/debug.py:111–132

Asserts that all examples of the given strategy match the predicate. :param strategy: Hypothesis strategy to check :param predicate: (callable) Predicate that takes example and returns bool

(strategy, predicate, settings=None)

def assert_all_examples(strategy, predicate, settings=None):
    """Asserts that all examples of the given strategy match the predicate.

    :param strategy: Hypothesis strategy to check
    :param predicate: (callable) Predicate that takes example and returns bool
    """
    if context := _current_build_context.value:
        with local_settings(Settings(parent=settings)):
            for _ in range(20):
                s = context.data.draw(strategy)
                msg = f"Found {s!r} using strategy {strategy} which does not match"
                assert predicate(s), msg

    else:

        @given(strategy)
        @Settings(parent=settings, database=None)
        def assert_examples(s):
            msg = f"Found {s!r} using strategy {strategy} which does not match"
            assert predicate(s), msg

        assert_examples()


def assert_simple_property(strategy, predicate, settings=None):