"""Run every repository regression function and report an exact count."""

from __future__ import annotations

import inspect
import pathlib
import runpy


def run(root: pathlib.Path | None = None) -> int:
    root = root or pathlib.Path(".")
    count = 0
    for test_path in sorted((root / "tests").glob("test_*.py")):
        namespace = runpy.run_path(str(test_path))
        for name, function in sorted(namespace.items()):
            if not name.startswith("test_") or not callable(function):
                continue
            parameters = list(inspect.signature(function).parameters)
            if parameters:
                if parameters != ["tmp_path"]:
                    raise TypeError(f"unsupported test parameters in {test_path.name}:{name}: {parameters}")
                function(root)
            else:
                function()
            count += 1
    print(f"tests passed: {count}")
    return count


if __name__ == "__main__":
    run()