def test_zero(self):
ar_input = [0, 0, 0, 0, 0, 0, 0, 0, 0]
k_input = 3
output = (numberOfPairs(ar = ar_input, k = k_input))
expected = 36
self.assertEqual(output, expected)
def test_random(self):
ar_input = [34, 56, 67, 89, 56, 54, 75, 85, 22, 67, 89, 89, 86, 85, 43, 35, 55]
k_input = 40
output = (numberOfPairs(ar = ar_input, k = k_input))
expected = 5
self.assertEqual(output, expected)
def test_sample2(self):
ar_input = [1, 2, 3, 4, 5, 6]
k_input = 5
output = (numberOfPairs(ar = ar_input, k = k_input))
expected = 3
self.assertEqual(output, expected)
def test_sample(self):
ar_input = [1, 3 , 2, 6, 1, 2]
k_input = 3
output = (numberOfPairs(ar = ar_input, k = k_input))
expected = 5
self.assertEqual(output, expected)
def test_one_number_list(self):
ar_input = [5]
k_input = 5
output = (numberOfPairs(ar = ar_input, k = k_input))
expected = 0
self.assertEqual(output, expected)
def test_no_pairs(self):
ar_input = [1, 1, 1, 1, 1, 1, 1, 1, 1]
k_input = 5
output = (numberOfPairs(ar = ar_input, k = k_input))
expected = 0
self.assertEqual(output, expected)