Question

I am writing my own poor-man’s testing framework. In my console application, I have this:

  static void Main(string[] args)
  {     // Line 12
     double adouble = 77;
     double expected = 70;
     TestingFramework.assertEquals<double>(expected, adouble - 7);  // Line 15
     TestingFramework.assertEquals<double>(expected, adouble - 6);  // Line 16
   }

Within TestingFramework I have this line:

System.Console.WriteLine("Success, File {0}, Line {1}", 
   new System.Diagnostics.StackTrace(true).GetFrame(1).GetFileName(), 
   new System.Diagnostics.StackTrace(true).GetFrame(1).GetFileLineNumber());

But when I run the test, it tells me that FileLineNumber is 12 for both function calls. Further, it gives me the correct file name, so I am think it is referencing the correct frame.

Can someone tell me how I can get it to report to me the line number that originated the call (15 then 16), and not the line number of the open paren (12)?

Thanks.

Answer 1

I have figured out the problem and how to fix it.

I had overloaded the assertequals function in TestingFramework:
1) assertEquals(T expectedValue, T actualValue) and
2) assertEquals(T expectedValue, T actualValue, string comment).

When client code calls the 2-param function, that function just calls the 3-param function. This different frame depths depending on how it was called.

So I had to add

static int depth; 

which I increment when entering a function and decrement when exiting. This changes the code to:

new System.Diagnostics.StackTrace(true).GetFrame(depth).GetFileLineNumber()); 

and that now works.