def test_pop(self):
"""Test the ability to maintain knowledge of the maximum"""
stack = [1, 20, 1, 1, 30, 30, 1, 1, 100, 1]
maxstack = msa.fromarray(stack)
self.assertEqual(maxstack.getmax(), 100)
self.assertEqual(maxstack.pop(), 1)
self.assertEqual(maxstack.getmax(), 100)
self.assertEqual(maxstack.pop(), 100)
self.assertEqual(maxstack.getmax(), 30)
self.assertEqual(maxstack.pop(), 1)
self.assertEqual(maxstack.getmax(), 30)
self.assertEqual(maxstack.pop(), 1)
self.assertEqual(maxstack.getmax(), 30)
self.assertEqual(maxstack.pop(), 30)
self.assertEqual(maxstack.getmax(), 30)
self.assertEqual(maxstack.pop(), 30)
self.assertEqual(maxstack.getmax(), 20)
self.assertEqual(maxstack.pop(), 1)
self.assertEqual(maxstack.getmax(), 20)
self.assertEqual(maxstack.pop(), 1)
self.assertEqual(maxstack.getmax(), 20)
self.assertEqual(maxstack.pop(), 20)
self.assertEqual(maxstack.getmax(), 1)
maxstack.push(30)
self.assertEqual(maxstack.getmax(), 30)
maxstack.push(30)
self.assertEqual(maxstack.getmax(), 30)
maxstack.push(3)
self.assertEqual(maxstack.getmax(), 30)
self.assertEqual(maxstack.pop(), 3)
self.assertEqual(maxstack.getmax(), 30)
self.assertEqual(maxstack.pop(), 30)
self.assertEqual(maxstack.getmax(), 30)
self.assertEqual(maxstack.pop(), 30)
self.assertEqual(maxstack.getmax(), 1)
def test_ascending_case(self):
"""Test an array with ascending values"""
stack = [-1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9]
maxstack = msa.fromarray(stack)
self.assertEqual(maxstack.getmax(), 9)
self.assertEqual(maxstack.pop(), 9)
self.assertEqual(maxstack.pop(), 8)
self.assertEqual(maxstack.pop(), 7)
self.assertEqual(maxstack.getmax(), 6)
def test_descending_case(self):
"""Test an array with a descending values"""
stack = [10, 9, 8, 7, 6, 5, 4, 3, 2, 1]
maxstack = msa.fromarray(stack)
self.assertEqual(maxstack.getmax(), 10)
self.assertEqual(maxstack.pop(), 1)
self.assertEqual(maxstack.pop(), 2)
self.assertEqual(maxstack.pop(), 3)
self.assertEqual(maxstack.getmax(), 10)
def test_single_case(self):
"""Test an array with a single value"""
stack = [100]
maxstack = msa.fromarray(stack)
self.assertEqual(maxstack.getmax(), 100)