old_contents: from unittest import TestCase
  from statstuff import regression as reg
  
  
  class Tests(TestCase):
  
      def test_single_random_event(self):
          self.assertEqual(None, reg.linear([], []))
          self.assertEqual(None, reg.linear([1, 2], []))
          self.assertEqual(None, reg.linear([], [3, 4]))
          self.assertEqual(None, reg.linear([1, 2], [3]))
          self.assertEqual((22.00745257452574, 0.8719512195121951),
                           reg.linear(
                               [164, 166, 169, 169, 171, 173, 173, 176, 178],
                               [166, 166, 171, 166, 171, 171, 178, 173, 178]
                           ))
          self.assertEqual((9.511627906976745, -0.627906976744186),
                           reg.linear(
                               [8, 2, 5, 0, 1, 4, 10, 2],
                               [7, 10, 6, 10, 8, 5, 2, 8]
                           ))
  
new_contents: from unittest import TestCase
  from statstuff import regression as reg
  
  
  class Tests(TestCase):
  
      def test_linear(self):
          self.assertEqual(None, reg.linear([], []))
          self.assertEqual(None, reg.linear([1, 2], []))
          self.assertEqual(None, reg.linear([], [3, 4]))
          self.assertEqual(None, reg.linear([1, 2], [3]))
          self.assertEqual((22.00745257452574, 0.8719512195121951),
                           reg.linear(
                               [164, 166, 169, 169, 171, 173, 173, 176, 178],
                               [166, 166, 171, 166, 171, 171, 178, 173, 178]
                           ))
          self.assertEqual((9.511627906976745, -0.627906976744186),
                           reg.linear(
                               [8, 2, 5, 0, 1, 4, 10, 2],
                               [7, 10, 6, 10, 8, 5, 2, 8]
                           ))
  
subject: test name fix