How to Use Hypothesis Strategies for Lists of Text in Python

from hypothesis import given, strategies as st
from hypothesis import example


@given(st.lists(st.text(min_size=1, max_size=10), min_size=1, max_size=5))
def test_joined_string_length(items):
    """Each text is non-empty; a joined string should be at least as long
    as the number of items (separator adds characters)."""
    joined = ", ".join(items)
    assert len(joined) > len(items) - 1
    assert all(item in joined for item in items)


if __name__ == "__main__":
    # Run the test with 100 examples to demonstrate
    import sys

    # Use hypothesis's own runner to produce output
    from hypothesis import settings

    # Wrap the test to capture results
    results = []

    @settings(max_examples=100)
    def run():
        test_joined_string_length()

    try:
        run()
        print("Hypothesis test passed: all generated lists of text satisfied assertions.")
    except Exception as e:
        print(f"Hypothesis test failed: {e}", file=sys.stderr)
        sys.exit(1)