def test_multiply_2(a):
    twoA = (a * 2)
    assert (not twoA.accepts(''))
    assert (not twoA.accepts('a'))
    assert twoA.accepts('aa')
    assert (not twoA.accepts('aaa'))
def test_multiply_2(a):
    twoA = (a * 2)
    assert (not twoA.accepts())
    assert (not twoA.accepts('a'))
    assert twoA.accepts('aa')
    assert (not twoA.accepts('aaa'))