A Unit test should test only one thing

1 Comment

• This case is a perfect place to employ MbUnit's RowTest feature:
  
  
  
  [RowTest()]
  
  [Row(1001, 2, 3)]
  
  [Row(1, 1002, 3)]
  
  [Row(1, 2, 1003)]
  
  void Sum_NumberBiggerThan1000IsNotSummed(int x, int y, int z)
  
  {
  
  int sumResult = Sum(x, y, z);
  
  Assert.AreEqual(o, sumResult);
  
  
  
  }
  
  
  
  In a test framework that doesn't have a similar capability, I'd probably resort to three separate tests.