from logstats.cli import main


def run(argv, capsys):
    main(argv)
    return capsys.readouterr().out.strip().splitlines()


def test_reports_every_level_present_in_file(tmp_path, capsys):
    log = tmp_path / "a.log"
    log.write_text(
        "2024-03-01 09:00:00 INFO started\n"
        "2024-03-01 09:00:01 ERROR boom\n"
        "2024-03-01 09:00:02 WARNING low disk\n"
        "2024-03-01 09:00:03 DEBUG state dump\n"
    )
    out = run([str(log)], capsys)
    assert len(out) == 4


def test_same_file_gives_same_result_on_every_run(tmp_path, capsys):
    log = tmp_path / "a.log"
    log.write_text(
        "2024-03-01 09:00:00 INFO started\n"
        "2024-03-01 09:00:01 ERROR boom\n"
    )
    first = run([str(log)], capsys)
    second = run([str(log)], capsys)
    assert first == second


def test_aggregates_across_multiple_files(tmp_path, capsys):
    a = tmp_path / "a.log"
    b = tmp_path / "b.log"
    a.write_text("2024-03-01 09:00:00 INFO one\n")
    b.write_text("2024-03-01 09:00:01 INFO two\n")
    out = run([str(a), str(b)], capsys)
    assert out == ["INFO     2"]