import pytest

from quality_control.parsing import FileType, parse_errors

@pytest.mark.slow
@pytest.mark.parametrize(
    "filepath,filetype,seek_pos",
    (("tests/test_data/average_crlf.tsv", FileType.AVERAGE, 0),
     ("tests/test_data/average_error_at_end_200MB.tsv", FileType.AVERAGE,
      205500004 # Skip first 500K lines
      ),
     ("tests/test_data/average.tsv", FileType.AVERAGE, 0),
     ("tests/test_data/standarderror_1_error_at_end.tsv",
      FileType.STANDARD_ERROR, 0),
     ("tests/test_data/standarderror.tsv", FileType.STANDARD_ERROR, 0),
     ("tests/test_data/duplicated_headers_no_data_errors.tsv",
      FileType.AVERAGE),
     ))
def test_parse_errors(filepath, filetype, strains, seek_pos):
    """
    Check that only errors are returned, and that certain properties hold for
    said errors.
    """
    for error in parse_errors(filepath, filetype, strains, seek_pos):
        assert isinstance(error, dict)
        assert "filepath" in error
        assert "filetype" in error
        assert "position" in error
        assert "error" in error and isinstance(error["error"], str)
        assert "message" in error