text: import bhaskara
  import pytest
  
  class Test_bhaskara:
  
      @pytest.fixture()
      def b(self):
          return bhaskara.Bhaskara()
  
      @pytest.mark.parametrize("entrada, saida",[
          ((1,0,0), (1,0)),
          ((1, -5, 6), (2, 3, 2)),
          ((10, 10, 10), 0),
          ((10, 20, 10), (1, -1))
      ])
  
      def teste_raiz(self, b, entrada, saida): 
          assert b.calcula_raizes(entrada[0], entrada[1], entrada[2]) == saida
  
   
  """     def test_uma_raiz(self, b):
          assert b.calcula_raizes(1, 0, 0) == (1, 0)
          
      def test_duas_raiz(self, b):
          assert b.calcula_raizes(1, -5, 6) == (2, 3, 2)
         
      def test_zero_raiz(self, b):
          assert b.calcula_raizes(10, 10, 10) == 0
      
      def test_uma_raiz_negative(self, b):
          assert b.calcula_raizes(10, 20, 10) == (1, -1) """
  