def METHOD_NAME():
    text = "test this."
    tokens = ["test", "this", "."]
    span_utils = SpanUtils(text, tokens)
    assert span_utils.text is text
    assert span_utils.tokens is tokens
    assert span_utils.token_to_char_idx == {0: (0, 4), 1: (5, 9), 2: (9, 10)}
    assert span_utils.char_to_token_idx == {
        0: 0,
        1: 0,
        2: 0,
        3: 0,
        5: 1,
        6: 1,
        7: 1,
        8: 1,
        9: 2,
    }
    assert span_utils._start_to_token_idx == {0: 0, 5: 1, 9: 2}
    assert span_utils._end_to_token_idx == {4: 0, 9: 1, 10: 2}