anchor.diff:    Assert.WillRaise(MyProc, ERangeError);
   end;
   
  -procedure TgrainsTests.Test_total_grains;
  +procedure TgrainsTests.Returns_the_total_number_of_grains_on_the_board;
   var expected: UInt64;
   begin
     expected := 18446744073709551615;
  
positive.code: interface
  uses
    DUnitX.TestFramework;
  
  type
    [TestFixture]
  
negative.code: 
      [Test]
      [Ignore]
      procedure Returns_the_total_number_of_grains_on_the_board;
    end;
  
  implementation
  