def test_max_list_iter(self):
"""tests that the max_list_inter function in Lab1 returns the maximum of a list"""
tlist = None
with self.assertRaises(ValueError): # used to check for exception
max_list_iter(tlist)
self.assertEqual(lab1.max_list_iter([]),
None) # tests that an empty list returns None
self.assertEqual(max_list_iter([1, 2, 3, 4, 5]),
5) # tests one maximum in various locations
self.assertEqual(max_list_iter([1, 2, 3, 5, 4]), 5)
self.assertEqual(max_list_iter([1, 2, 5, 3, 4]), 5)
self.assertEqual(max_list_iter([1, 5, 2, 3, 4]), 5)
self.assertEqual(max_list_iter([5, 1, 2, 3, 4]), 5)
self.assertEqual(max_list_iter([1, 1, 1, 1, 1]),
1) # tests all values equal
self.assertEqual(max_list_iter([9, 1, 1, 1, 1]),
9) # tests multiple min values and 1 max
self.assertEqual(max_list_iter([1, 9, 1, 1, 1]), 9)
self.assertEqual(max_list_iter([1, 1, 9, 1, 1]), 9)
self.assertEqual(max_list_iter([1, 1, 1, 9, 1]), 9)
self.assertEqual(max_list_iter([1, 1, 1, 1, 9]), 9)
self.assertEqual(max_list_iter([1, 9, 9, 9, 9]),
9) # tests multiple max values and 1 min
self.assertEqual(max_list_iter([9, 1, 9, 9, 9]), 9)
self.assertEqual(max_list_iter([9, 9, 1, 9, 9]), 9)
self.assertEqual(max_list_iter([9, 9, 9, 1, 9]), 9)
self.assertEqual(max_list_iter([9, 9, 9, 9, 1]), 9)
def test_max_list_iter(self):
"""test max_list_iter function. Edge cases include empty lists and lists of length 1"""
tlist = None
with self.assertRaises(ValueError): # used to check for exception
lab1.max_list_iter(tlist)
self.assertEqual(lab1.max_list_iter([]), None)
self.assertEqual(lab1.max_list_iter([1]), 1)
self.assertEqual(lab1.max_list_iter([1, 2]), 2)
self.assertEqual(lab1.max_list_iter([2, 1]), 2)
self.assertEqual(lab1.max_list_iter([1, 2, 3]), 3)
self.assertEqual(lab1.max_list_iter([1, 3, 2]), 3)
def test_max_list_iter(self):
tlist1 = [0, 1, 2, 3, 4, 5]
self.assertEqual(lab1.max_list_iter(tlist1), 5)
tlist2 = [5, 4, 3, 2, 1, 0]
self.assertEqual(lab1.max_list_iter(tlist2), 5)
tlist3 = [3, 5, 6, 8, 2, 9]
self.assertEqual(lab1.max_list_iter(tlist3), 9)
tlist4 = [1, 1, 1, 1, 1, 1]
self.assertEqual(lab1.max_list_iter(tlist4), 1)
tlist5 = [9, 0, 0, 0, 0, 10]
self.assertEqual(lab1.max_list_iter(tlist5), 10)
tlist6 = []
with self.assertRaises(ValueError):
lab1.max_list_iter(tlist6)
tlist7 = [-1, -5, -8, -2, -10]
self.assertEqual(lab1.max_list_iter(tlist7), -2)
tlist8 = [-1, -1, -1, -1, -1]
self.assertEqual(lab1.max_list_iter(tlist8), -1)
def test_max_list(self):
tlist = [10, 9, 8, 4, 9]
self.assertEqual(lab1.max_list_iter(tlist), 10)
tlist = []
with self.assertRaises(ValueError): # magic - uses context manager
lab1.max_list_iter(tlist)