text: import pytest
  from main import Solution
      
  
  def test_solutions_1():
      sol = Solution()
      x = [1,3,2,4,2,3,4]
      result = sol.singleNumber(x)
      assert result == 1
  
  
  def test_solutions_2():
      sol = Solution()
      x = [9, 323232,1233,323232,1233]
      result = sol.singleNumber(x)
      assert result == 9