def test_equals_2(self): self.assertEqual(length_of_line([[0, 0], [-5, -6]]), '7.81')
def test_equals_8(self): self.assertEqual(length_of_line([[-3, 4], [10, 5]]), '13.04')
def test_equals(self): self.assertEqual(length_of_line([[0, 0], [1, 1]]), '1.41')
def test_equals_7(self): self.assertEqual(length_of_line([[0, 0], [0, 0]]), '0.00')
def test_equals_6(self): self.assertEqual(length_of_line([[0, 0], [-7, 4]]), '8.06')
def test_equals_5(self): self.assertEqual(length_of_line([[0, 0], [5, 4]]), '6.40')
def test_equals_4(self): self.assertEqual(length_of_line([[0, 0], [5, 1]]), '5.10')
def test_equals_3(self): self.assertEqual(length_of_line([[0, 0], [10, 15]]), '18.03')