def test_add(self):
'''An non-full ring buffer should contain everything inserted into it
'''
rb = RingBuffer(3)
rb.add(1)
self.assertListEqual(rb.toList(), [1])
rb.add(2)
rb.add(3)
self.assertListEqual(rb.toList(), [1,2,3])
def test_add_full(self):
'''A full ring buffer should remove the oldest element after a new add
'''
rb = RingBuffer(3)
rb.add(1)
rb.add(2)
rb.add(3)
rb.add(4)
self.assertListEqual(rb.toList(),[2,3,4])
