"""Smoke tests for the package boundary (T1.1).

These guard the most basic contract: the package is importable and exposes
a version. If these fail, the install / src-layout is broken.
"""

import tsmm


def test_package_is_importable():
    assert tsmm is not None


def test_package_exposes_version():
    assert isinstance(tsmm.__version__, str)
    assert tsmm.__version__  # non-empty


def test_subpackages_importable():
    # M1 will populate these; the skeleton must already expose the namespaces.
    import importlib

    for sub in ("data", "model", "train", "eval"):
        mod = importlib.import_module(f"tsmm.{sub}")
        assert mod is not None