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import unittest

from webkitpy.tool.grammar import join_with_separators

class GrammarTest(unittest.TestCase):

    def test_join_with_separators(self):

        self.assertEqual(join_with_separators(["one"]), "one")

        self.assertEqual(join_with_separators(["one", "two"]), "one and two")

        self.assertEqual(join_with_separators(["one", "two", "three"]), "one, two, and three")

if __name__ == '__main__':

    unittest.main()