import unittest

def pindala(a, b):
   kokku=0
   for nr in range(a):
     kokku+=b
   if kokku<0: kokku=-kokku
   return kokku
   #return a*b+1

class TestMath(unittest.TestCase):
  def test_pindala(self):
    self.assertEqual(pindala(3, 5), 15)
    
  def test_tyhi_pindala(self):
    self.assertEqual(pindala(0, 5), 0)

  def test_negatiivne_pindala(self):
    self.assertEqual(pindala(3, -5), 15)

suite = unittest.TestLoader().loadTestsFromTestCase(TestMath)
runner = unittest.TextTestRunner(verbosity=0)
result = runner.run(suite)
print(f'Tests run: {result.testsRun}')