def test_multiply_1(a):
    oneA = (a * 1)
    assert (not oneA.accepts(''))
    assert oneA.accepts('a')
    assert (not oneA.accepts('aa'))
def test_multiply_1(a):
    oneA = (a * 1)
    assert (not oneA.accepts())
    assert oneA.accepts('a')
    assert (not oneA.accepts('aa'))