import unittest

def abbreviate(text):
    return "".join(w[0] for w in text.replace("_","").replace("-"," ").split()).upper()

# Tests adapted from `problem-specifications//canonical-data.json` @ v1.7.0


class AcronymTest(unittest.TestCase):
    def test_basic(self):
        self.assertEqual(abbreviate("Portable Network Graphics"), "PNG")

    def test_lowercase_words(self):
        self.assertEqual(abbreviate("Ruby on Rails"), "ROR")

    def test_punctuation(self):
        self.assertEqual(abbreviate("First In, First Out"), "FIFO")

    def test_all_caps_word(self):
        self.assertEqual(abbreviate("GNU Image Manipulation Program"), "GIMP")

    def test_punctuation_without_whitespace(self):
        self.assertEqual(abbreviate("Complementary metal-oxide semiconductor"), "CMOS")

    def test_very_long_abbreviation(self):
        self.assertEqual(
            abbreviate(
                "Rolling On The Floor Laughing So Hard That My Dogs Came Over And Licked Me"
            ),
            "ROTFLSHTMDCOALM",
        )

    def test_consecutive_delimiters(self):
        self.assertEqual(abbreviate("Something - I made up from thin air"), "SIMUFTA")

    def test_apostrophes(self):
        self.assertEqual(abbreviate("Halley's Comet"), "HC")

    def test_underscore_emphasis(self):
        self.assertEqual(abbreviate("The Road _Not_ Taken"), "TRNT")


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