import sys
from pathlib import Path

sys.path.append(str(Path(__file__).parents[2]))

from pyodide_build.common import _parse_package_subset  # noqa


def test_parse_package_subset():
    assert _parse_package_subset(None) is None
    # micropip is always included
    assert _parse_package_subset("numpy,pandas") == {
        "micropip",
        "distlib",
        "numpy",
        "pandas",
    }

    # duplicates are removed
    assert _parse_package_subset("numpy,numpy") == {"micropip", "distlib", "numpy"}

    # no empty package name included, spaces are handled
    assert _parse_package_subset("x,  a, b, c   ,,, d,,") == {
        "micropip",
        "distlib",
        "x",
        "a",
        "b",
        "c",
        "d",
    }