annotate tests/test_StreamTokenizer.py @ 386:059599823c34

Merge branch 'master' of https://github.com/amsehili/auditok

"""
@author: Amine Sehili <[e-mail]>
September 2015

"""

import unittest
from auditok import StreamTokenizer, StringDataSource, DataValidator


class AValidator(DataValidator):
    def is_valid(self, frame):
        return frame == "A"


class TestStreamTokenizerInitParams(unittest.TestCase):
    def setUp(self):
        self.A_validator = AValidator()

    # Completely deactivate init_min and init_max_silence
    # The tokenizer will only rely on the other parameters
    # Note that if init_min = 0, the value of init_max_silence
    # will have no effect
    def test_init_min_0_init_max_silence_0(self):

        tokenizer = StreamTokenizer(
            self.A_validator,
            min_length=5,
            max_length=20,
            max_continuous_silence=4,
            init_min=0,
            init_max_silence=0,
            mode=0,
        )

        data_source = StringDataSource("aAaaaAaAaaAaAaaaaaaaAAAAAAAA")
        #                                ^              ^   ^      ^
        #                                2              16  20     27
        tokens = tokenizer.tokenize(data_source)

        self.assertEqual(
            len(tokens),
            2,
            msg="wrong number of tokens, expected: 2, found: {0} ".format(
                len(tokens)
            ),
        )
        tok1, tok2 = tokens[0], tokens[1]

        # tok1[0]: data
        # tok1[1]: start frame (included)
        # tok1[2]: end frame (included)

        data = "".join(tok1[0])
        start = tok1[1]
        end = tok1[2]
        self.assertEqual(
            data,
            "AaaaAaAaaAaAaaaa",
            msg=(
                "wrong data for token 1, expected: 'AaaaAaAaaAaAaaaa', "
                "found: {0} "
            ).format(data),
        )
        self.assertEqual(
            start,
            1,
            msg=(
                "wrong start frame for token 1, expected: 1, found: {0} "
            ).format(start),
        )
        self.assertEqual(
            end,
            16,
            msg=(
                "wrong end frame for token 1, expected: 16, found: {0} "
            ).format(end),
        )

        data = "".join(tok2[0])
        start = tok2[1]
        end = tok2[2]
        self.assertEqual(
            data,
            "AAAAAAAA",
            msg=(
                "wrong data for token 1, expected: 'AAAAAAAA', found: {0} "
            ).format(data),
        )
        self.assertEqual(
            start,
            20,
            msg=(
                "wrong start frame for token 2, expected: 20, found: {0} "
            ).format(start),
        )
        self.assertEqual(
            end,
            27,
            msg=(
                "wrong end frame for token 2, expected: 27, found: {0} "
            ).format(end),
        )

    # A valid token is considered as so iff the tokenizer encounters
    # at least valid frames (init_min = 3) between witch there
    # are at most 0 consecutive non valid frames (init_max_silence = 0)
    # The tokenizer will only rely on the other parameters
    # In other words, a valid token must start with 3 valid frames
    def test_init_min_3_init_max_silence_0(self):

        tokenizer = StreamTokenizer(
            self.A_validator,
            min_length=5,
            max_length=20,
            max_continuous_silence=4,
            init_min=3,
            init_max_silence=0,
            mode=0,
        )

        data_source = StringDataSource(
            "aAaaaAaAaaAaAaaaaaAAAAAAAAAaaaaaaAAAAA"
        )
        #                      ^           ^  ^   ^
        #                      18          30 33  37

        tokens = tokenizer.tokenize(data_source)

        self.assertEqual(
            len(tokens),
            2,
            msg="wrong number of tokens, expected: 2, found: {0} ".format(
                len(tokens)
            ),
        )
        tok1, tok2 = tokens[0], tokens[1]

        data = "".join(tok1[0])
        start = tok1[1]
        end = tok1[2]
        self.assertEqual(
            data,
            "AAAAAAAAAaaaa",
            msg=(
                "wrong data for token 1, expected: 'AAAAAAAAAaaaa', "
                "found: '{0}' "
            ).format(data),
        )
        self.assertEqual(
            start,
            18,
            msg=(
                "wrong start frame for token 1, expected: 18, found: {0} "
            ).format(start),
        )
        self.assertEqual(
            end,
            30,
            msg=(
                "wrong end frame for token 1, expected: 30, found: {0} "
            ).format(end),
        )

        data = "".join(tok2[0])
        start = tok2[1]
        end = tok2[2]
        self.assertEqual(
            data,
            "AAAAA",
            msg=(
                "wrong data for token 1, expected: 'AAAAA', found: '{0}' "
            ).format(data),
        )
        self.assertEqual(
            start,
            33,
            msg=(
                "wrong start frame for token 2, expected: 33, found: {0} "
            ).format(start),
        )
        self.assertEqual(
            end,
            37,
            msg=(
                "wrong end frame for token 2, expected: 37, found: {0} "
            ).format(end),
        )

    # A valid token is considered iff the tokenizer encounters
    # at least valid frames (init_min = 3) between witch there
    # are at most 2 consecutive non valid frames (init_max_silence = 2)
    def test_init_min_3_init_max_silence_2(self):

        tokenizer = StreamTokenizer(
            self.A_validator,
            min_length=5,
            max_length=20,
            max_continuous_silence=4,
            init_min=3,
            init_max_silence=2,
            mode=0,
        )

        data_source = StringDataSource(
            "aAaaaAaAaaAaAaaaaaaAAAAAAAAAaaaaaaaAAAAA"
        )
        #         ^          ^  ^           ^   ^   ^
        #         5          16 19          31  35  39
        tokens = tokenizer.tokenize(data_source)

        self.assertEqual(
            len(tokens),
            3,
            msg="wrong number of tokens, expected: 3, found: {0} ".format(
                len(tokens)
            ),
        )
        tok1, tok2, tok3 = tokens[0], tokens[1], tokens[2]

        data = "".join(tok1[0])
        start = tok1[1]
        end = tok1[2]
        self.assertEqual(
            data,
            "AaAaaAaAaaaa",
            msg=(
                "wrong data for token 1, expected: 'AaAaaAaA', found: '{0}' "
            ).format(data),
        )
        self.assertEqual(
            start,
            5,
            msg=(
                "wrong start frame for token 1, expected: 5, found: {0} "
            ).format(start),
        )
        self.assertEqual(
            end,
            16,
            msg=(
                "wrong end frame for token 1, expected: 16, found: {0} "
            ).format(end),
        )

        data = "".join(tok2[0])
        start = tok2[1]
        end = tok2[2]
        self.assertEqual(
            data,
            "AAAAAAAAAaaaa",
            msg=(
                "wrong data for token 2, expected: 'AAAAAAAAAaaaa', "
                "found: '{0}' "
            ).format(data),
        )
        self.assertEqual(
            start,
            19,
            msg=(
                "wrong start frame for token 2, expected: 19, found: {0} "
            ).format(start),
        )
        self.assertEqual(
            end,
            31,
            msg=(
                "wrong end frame for token 2, expected: 31, found: {0} "
            ).format(end),
        )

        data = "".join(tok3[0])
        start = tok3[1]
        end = tok3[2]
        self.assertEqual(
            data,
            "AAAAA",
            msg=(
                "wrong data for token 3, expected: 'AAAAA', found: '{0}' "
            ).format(data),
        )
        self.assertEqual(
            start,
            35,
            msg=(
                "wrong start frame for token 2, expected: 35, found: {0} "
            ).format(start),
        )
        self.assertEqual(
            end,
            39,
            msg=(
                "wrong end frame for token 2, expected: 39, found: {0} "
            ).format(end),
        )


class TestStreamTokenizerMinMaxLength(unittest.TestCase):
    def setUp(self):
        self.A_validator = AValidator()

    def test_min_length_6_init_max_length_20(self):

        tokenizer = StreamTokenizer(
            self.A_validator,
            min_length=6,
            max_length=20,
            max_continuous_silence=2,
            init_min=3,
            init_max_silence=3,
            mode=0,
        )

        data_source = StringDataSource("aAaaaAaAaaAaAaaaaaAAAAAAAAAaaaaaAAAAA")
        #                                ^            ^   ^         ^
        #                                1            14  18        28

        tokens = tokenizer.tokenize(data_source)

        self.assertEqual(
            len(tokens),
            2,
            msg="wrong number of tokens, expected: 2, found: {0} ".format(
                len(tokens)
            ),
        )
        tok1, tok2 = tokens[0], tokens[1]

        data = "".join(tok1[0])
        start = tok1[1]
        end = tok1[2]
        self.assertEqual(
            data,
            "AaaaAaAaaAaAaa",
            msg=(
                "wrong data for token 1, expected: 'AaaaAaAaaAaAaa', "
                "found: '{0}' "
            ).format(data),
        )
        self.assertEqual(
            start,
            1,
            msg=(
                "wrong start frame for token 1, expected: 1, found: {0} "
            ).format(start),
        )
        self.assertEqual(
            end,
            14,
            msg=(
                "wrong end frame for token 1, expected: 14, found: {0} "
            ).format(end),
        )

        data = "".join(tok2[0])
        start = tok2[1]
        end = tok2[2]
        self.assertEqual(
            data,
            "AAAAAAAAAaa",
            msg=(
                "wrong data for token 2, expected: 'AAAAAAAAAaa', "
                "found: '{0}' "
            ).format(data),
        )
        self.assertEqual(
            start,
            18,
            msg=(
                "wrong start frame for token 2, expected: 18, found: {0} "
            ).format(start),
        )
        self.assertEqual(
            end,
            28,
            msg=(
                "wrong end frame for token 2, expected: 28, found: {0} "
            ).format(end),
        )

    def test_min_length_1_init_max_length_1(self):

        tokenizer = StreamTokenizer(
            self.A_validator,
            min_length=1,
            max_length=1,
            max_continuous_silence=0,
            init_min=0,
            init_max_silence=0,
            mode=0,
        )

        data_source = StringDataSource(
            "AAaaaAaaaAaAaaAaAaaaaaAAAAAAAAAaaaaaAAAAA"
        )

        tokens = tokenizer.tokenize(data_source)

        self.assertEqual(
            len(tokens),
            21,
            msg="wrong number of tokens, expected: 21, found: {0} ".format(
                len(tokens)
            ),
        )

    def test_min_length_10_init_max_length_20(self):

        tokenizer = StreamTokenizer(
            self.A_validator,
            min_length=10,
            max_length=20,
            max_continuous_silence=4,
            init_min=3,
            init_max_silence=3,
            mode=0,
        )

        data_source = StringDataSource(
            "aAaaaAaAaaAaAaaaaaaAAAAAaaaaaaAAAAAaaAAaaAAA"
        )
        #     ^              ^             ^            ^
        #     1              16            30           45

        tokens = tokenizer.tokenize(data_source)

        self.assertEqual(
            len(tokens),
            2,
            msg="wrong number of tokens, expected: 2, found: {0} ".format(
                len(tokens)
            ),
        )
        tok1, tok2 = tokens[0], tokens[1]

        data = "".join(tok1[0])
        start = tok1[1]
        end = tok1[2]
        self.assertEqual(
            data,
            "AaaaAaAaaAaAaaaa",
            msg=(
                "wrong data for token 1, expected: 'AaaaAaAaaAaAaaaa', "
                "found: '{0}' "
            ).format(data),
        )
        self.assertEqual(
            start,
            1,
            msg=(
                "wrong start frame for token 1, expected: 1, found: {0} "
            ).format(start),
        )
        self.assertEqual(
            end,
            16,
            msg=(
                "wrong end frame for token 1, expected: 16, found: {0} "
            ).format(end),
        )

        data = "".join(tok2[0])
        start = tok2[1]
        end = tok2[2]
        self.assertEqual(
            data,
            "AAAAAaaAAaaAAA",
            msg=(
                "wrong data for token 2, expected: 'AAAAAaaAAaaAAA', "
                "found: '{0}' "
            ).format(data),
        )
        self.assertEqual(
            start,
            30,
            msg=(
                "wrong start frame for token 2, expected: 30, found: {0} "
            ).format(start),
        )
        self.assertEqual(
            end,
            43,
            msg=(
                "wrong end frame for token 2, expected: 43, found: {0} "
            ).format(end),
        )

    def test_min_length_4_init_max_length_5(self):

        tokenizer = StreamTokenizer(
            self.A_validator,
            min_length=4,
            max_length=5,
            max_continuous_silence=4,
            init_min=3,
            init_max_silence=3,
            mode=0,
        )

        data_source = StringDataSource(
            "aAaaaAaAaaAaAaaaaaAAAAAAAAaaaaaaAAAAAaaaaaAAaaAaa"
        )
        #                      ^   ^^   ^    ^   ^     ^   ^
        #                      18 2223  27   32  36    42  46

        tokens = tokenizer.tokenize(data_source)

        self.assertEqual(
            len(tokens),
            4,
            msg="wrong number of tokens, expected: 4, found: {0} ".format(
                len(tokens)
            ),
        )
        tok1, tok2, tok3, tok4 = tokens[0], tokens[1], tokens[2], tokens[3]

        data = "".join(tok1[0])
        start = tok1[1]
        end = tok1[2]
        self.assertEqual(
            data,
            "AAAAA",
            msg=(
                "wrong data for token 1, expected: 'AAAAA', found: '{0}' "
            ).format(data),
        )
        self.assertEqual(
            start,
            18,
            msg=(
                "wrong start frame for token 1, expected: 18, found: {0} "
            ).format(start),
        )
        self.assertEqual(
            end,
            22,
            msg=(
                "wrong end frame for token 1, expected: 22, found: {0} "
            ).format(end),
        )

        data = "".join(tok2[0])
        start = tok2[1]
        end = tok2[2]
        self.assertEqual(
            data,
            "AAAaa",
            msg=(
                "wrong data for token 1, expected: 'AAAaa', found: '{0}' "
            ).format(data),
        )
        self.assertEqual(
            start,
            23,
            msg=(
                "wrong start frame for token 1, expected: 23, found: {0} "
            ).format(start),
        )
        self.assertEqual(
            end,
            27,
            msg=(
                "wrong end frame for token 1, expected: 27, found: {0} "
            ).format(end),
        )

        data = "".join(tok3[0])
        start = tok3[1]
        end = tok3[2]
        self.assertEqual(
            data,
            "AAAAA",
            msg=(
                "wrong data for token 1, expected: 'AAAAA', found: '{0}' "
            ).format(data),
        )
        self.assertEqual(
            start,
            32,
            msg=(
                "wrong start frame for token 1, expected: 1, found: {0} "
            ).format(start),
        )
        self.assertEqual(
            end,
            36,
            msg=(
                "wrong end frame for token 1, expected: 7, found: {0} "
            ).format(end),
        )

        data = "".join(tok4[0])
        start = tok4[1]
        end = tok4[2]
        self.assertEqual(
            data,
            "AAaaA",
            msg=(
                "wrong data for token 2, expected: 'AAaaA', found: '{0}' "
            ).format(data),
        )
        self.assertEqual(
            start,
            42,
            msg=(
                "wrong start frame for token 2, expected: 17, found: {0} "
            ).format(start),
        )
        self.assertEqual(
            end,
            46,
            msg=(
                "wrong end frame for token 2, expected: 22, found: {0} "
            ).format(end),
        )


class TestStreamTokenizerMaxContinuousSilence(unittest.TestCase):
    def setUp(self):
        self.A_validator = AValidator()

    def test_min_5_max_10_max_continuous_silence_0(self):

        tokenizer = StreamTokenizer(
            self.A_validator,
            min_length=5,
            max_length=10,
            max_continuous_silence=0,
            init_min=3,
            init_max_silence=3,
            mode=0,
        )

        data_source = StringDataSource("aaaAAAAAaAAAAAAaaAAAAAAAAAa")
        #                                  ^   ^ ^    ^  ^       ^
        #                                  3   7 9   14 17      25

        tokens = tokenizer.tokenize(data_source)

        self.assertEqual(
            len(tokens),
            3,
            msg="wrong number of tokens, expected: 3, found: {0} ".format(
                len(tokens)
            ),
        )
        tok1, tok2, tok3 = tokens[0], tokens[1], tokens[2]

        data = "".join(tok1[0])
        start = tok1[1]
        end = tok1[2]
        self.assertEqual(
            data,
            "AAAAA",
            msg=(
                "wrong data for token 1, expected: 'AAAAA', found: '{0}' "
            ).format(data),
        )
        self.assertEqual(
            start,
            3,
            msg=(
                "wrong start frame for token 1, expected: 3, found: {0} "
            ).format(start),
        )
        self.assertEqual(
            end,
            7,
            msg=(
                "wrong end frame for token 1, expected: 7, found: {0} "
            ).format(end),
        )

        data = "".join(tok2[0])
        start = tok2[1]
        end = tok2[2]
        self.assertEqual(
            data,
            "AAAAAA",
            msg=(
                "wrong data for token 1, expected: 'AAAAAA', found: '{0}' "
            ).format(data),
        )
        self.assertEqual(
            start,
            9,
            msg=(
                "wrong start frame for token 1, expected: 9, found: {0} "
            ).format(start),
        )
        self.assertEqual(
            end,
            14,
            msg=(
                "wrong end frame for token 1, expected: 14, found: {0} "
            ).format(end),
        )

        data = "".join(tok3[0])
        start = tok3[1]
        end = tok3[2]
        self.assertEqual(
            data,
            "AAAAAAAAA",
            msg=(
                "wrong data for token 1, expected: 'AAAAAAAAA', found: '{0}' "
            ).format(data),
        )
        self.assertEqual(
            start,
            17,
            msg=(
                "wrong start frame for token 1, expected: 17, found: {0} "
            ).format(start),
        )
        self.assertEqual(
            end,
            25,
            msg=(
                "wrong end frame for token 1, expected: 25, found: {0} "
            ).format(end),
        )

    def test_min_5_max_10_max_continuous_silence_1(self):

        tokenizer = StreamTokenizer(
            self.A_validator,
            min_length=5,
            max_length=10,
            max_continuous_silence=1,
            init_min=3,
            init_max_silence=3,
            mode=0,
        )

        data_source = StringDataSource("aaaAAAAAaAAAAAAaaAAAAAAAAAa")
        #                                  ^        ^^ ^ ^        ^
        #                                  3       12131517      26
        #                                         (12 13 15 17)

        tokens = tokenizer.tokenize(data_source)

        self.assertEqual(
            len(tokens),
            3,
            msg="wrong number of tokens, expected: 3, found: {0} ".format(
                len(tokens)
            ),
        )
        tok1, tok2, tok3 = tokens[0], tokens[1], tokens[2]

        data = "".join(tok1[0])
        start = tok1[1]
        end = tok1[2]
        self.assertEqual(
            data,
            "AAAAAaAAAA",
            msg=(
                "wrong data for token 1, expected: 'AAAAAaAAAA', "
                "found: '{0}' "
            ).format(data),
        )
        self.assertEqual(
            start,
            3,
            msg=(
                "wrong start frame for token 1, expected: 3, found: {0} "
            ).format(start),
        )
        self.assertEqual(
            end,
            12,
            msg=(
                "wrong end frame for token 1, expected: 10, found: {0} "
            ).format(end),
        )

        data = "".join(tok2[0])
        start = tok2[1]
        end = tok2[2]
        self.assertEqual(
            data,
            "AAa",
            msg=(
                "wrong data for token 1, expected: 'AAa', found: '{0}' "
            ).format(data),
        )
        self.assertEqual(
            start,
            13,
            msg=(
                "wrong start frame for token 1, expected: 9, found: {0} "
            ).format(start),
        )
        self.assertEqual(
            end,
            15,
            msg=(
                "wrong end frame for token 1, expected: 14, found: {0} "
            ).format(end),
        )

        data = "".join(tok3[0])
        start = tok3[1]
        end = tok3[2]
        self.assertEqual(
            data,
            "AAAAAAAAAa",
            msg=(
                "wrong data for token 1, expected: 'AAAAAAAAAa', "
                "found: '{0}' "
            ).format(data),
        )
        self.assertEqual(
            start,
            17,
            msg=(
                "wrong start frame for token 1, expected: 17, found: {0} "
            ).format(start),
        )
        self.assertEqual(
            end,
            26,
            msg=(
                "wrong end frame for token 1, expected: 26, found: {0} "
            ).format(end),
        )


class TestStreamTokenizerModes(unittest.TestCase):
    def setUp(self):
        self.A_validator = AValidator()

    def test_STRICT_MIN_LENGTH(self):

        tokenizer = StreamTokenizer(
            self.A_validator,
            min_length=5,
            max_length=8,
            max_continuous_silence=3,
            init_min=3,
            init_max_silence=3,
            mode=StreamTokenizer.STRICT_MIN_LENGTH,
        )

        data_source = StringDataSource("aaAAAAAAAAAAAA")
        #                                 ^      ^
        #                                 2      9

        tokens = tokenizer.tokenize(data_source)

        self.assertEqual(
            len(tokens),
            1,
            msg="wrong number of tokens, expected: 1, found: {0} ".format(
                len(tokens)
            ),
        )
        tok1 = tokens[0]

        data = "".join(tok1[0])
        start = tok1[1]
        end = tok1[2]
        self.assertEqual(
            data,
            "AAAAAAAA",
            msg=(
                "wrong data for token 1, expected: 'AAAAAAAA', found: '{0}' "
            ).format(data),
        )
        self.assertEqual(
            start,
            2,
            msg=(
                "wrong start frame for token 1, expected: 2, found: {0} "
            ).format(start),
        )
        self.assertEqual(
            end,
            9,
            msg=(
                "wrong end frame for token 1, expected: 9, found: {0} "
            ).format(end),
        )

    def test_DROP_TAILING_SILENCE(self):

        tokenizer = StreamTokenizer(
            self.A_validator,
            min_length=5,
            max_length=10,
            max_continuous_silence=2,
            init_min=3,
            init_max_silence=3,
            mode=StreamTokenizer.DROP_TRAILING_SILENCE,
        )

        data_source = StringDataSource("aaAAAAAaaaaa")
        #                                 ^   ^
        #                                 2   6

        tokens = tokenizer.tokenize(data_source)

        self.assertEqual(
            len(tokens),
            1,
            msg="wrong number of tokens, expected: 1, found: {0} ".format(
                len(tokens)
            ),
        )
        tok1 = tokens[0]

        data = "".join(tok1[0])
        start = tok1[1]
        end = tok1[2]
        self.assertEqual(
            data,
            "AAAAA",
            msg=(
                "wrong data for token 1, expected: 'AAAAA', found: '{0}' "
            ).format(data),
        )
        self.assertEqual(
            start,
            2,
            msg=(
                "wrong start frame for token 1, expected: 2, found: {0} "
            ).format(start),
        )
        self.assertEqual(
            end,
            6,
            msg=(
                "wrong end frame for token 1, expected: 6, found: {0} "
            ).format(end),
        )

    def test_STRICT_MIN_LENGTH_and_DROP_TAILING_SILENCE(self):

        tokenizer = StreamTokenizer(
            self.A_validator,
            min_length=5,
            max_length=8,
            max_continuous_silence=3,
            init_min=3,
            init_max_silence=3,
            mode=StreamTokenizer.STRICT_MIN_LENGTH
            | StreamTokenizer.DROP_TRAILING_SILENCE,
        )

        data_source = StringDataSource("aaAAAAAAAAAAAAaa")
        #                                 ^      ^
        #                                 2      8

        tokens = tokenizer.tokenize(data_source)

        self.assertEqual(
            len(tokens),
            1,
            msg="wrong number of tokens, expected: 1, found: {0} ".format(
                len(tokens)
            ),
        )
        tok1 = tokens[0]

        data = "".join(tok1[0])
        start = tok1[1]
        end = tok1[2]
        self.assertEqual(
            data,
            "AAAAAAAA",
            msg=(
                "wrong data for token 1, expected: 'AAAAAAAA', found: '{0}' "
            ).format(data),
        )
        self.assertEqual(
            start,
            2,
            msg=(
                "wrong start frame for token 1, expected: 2, found: {0} "
            ).format(start),
        )
        self.assertEqual(
            end,
            9,
            msg=(
                "wrong end frame for token 1, expected: 9, found: {0} "
            ).format(end),
        )


class TestStreamTokenizerCallback(unittest.TestCase):
    def setUp(self):
        self.A_validator = AValidator()

    def test_callback(self):

        tokens = []

        def callback(data, start, end):
            tokens.append((data, start, end))

        tokenizer = StreamTokenizer(
            self.A_validator,
            min_length=5,
            max_length=8,
            max_continuous_silence=3,
            init_min=3,
            init_max_silence=3,
            mode=0,
        )

        data_source = StringDataSource("aaAAAAAAAAAAAAa")
        #                                 ^      ^^   ^
        #                                 2      910  14

        tokenizer.tokenize(data_source, callback=callback)

        self.assertEqual(
            len(tokens),
            2,
            msg="wrong number of tokens, expected: 1, found: {0} ".format(
                len(tokens)
            ),
        )


if __name__ == "__main__":
    unittest.main()