from tcga_downloader.cli import build_parser


def test_cli_has_subcommands():
    parser = build_parser()
    subparsers = parser._subparsers
    assert subparsers is not None

from unittest.mock import patch

from tcga_downloader.cli import main


def test_cli_query_writes_manifest(tmp_path, monkeypatch):
    args = [
        "tcga-downloader",
        "query",
        "--project",
        "TCGA-BRCA",
        "--data-type",
        "Gene Expression",
        "--out",
        str(tmp_path / "m.tsv"),
    ]
    monkeypatch.setattr("sys.argv", args)
    with patch("tcga_downloader.cli.query_files") as q:
        q.return_value = [
            {
                "file_id": "f1",
                "file_name": "a.tsv",
                "data_type": "Gene Expression",
                "data_format": "TSV",
                "file_size": 123,
                "md5sum": "abc",
            }
        ]
        main()
    assert (tmp_path / "m.tsv").exists()