def METHOD_NAME():
    """Tests basic functionality of word segmentation."""
    language = common.Common
    words = language.words("")
    assert words == []
    words = language.words("test sentence.")
    assert words == ["test", "sentence"]
    words = language.words("This is a weird test .")
    assert words == ["This", "is", "a", "weird", "test"]
    words = language.words("Don't send e-mail!")
    assert words == ["Don't", "send", "e-mail"]
    words = language.words("Don’t send e-mail!")
    assert words == ["Don’t", "send", "e-mail"]