Handling exceptions in different units

There was a post on SQA Forums several years ago about how to handle this issue.

Essentially, it is a 4 step process.  Overall, it is awkward and a bit ugly, but it does

work.

1. Create an exception class that can be used to percolate exceptions up the call stack.

function CustomException (value1, value2)

// Actually, this class can take mutiple values, not just strings.

// Unfortunately, I can't share our implementation.

{

  this.message = value1

  this.description = value2

}

2. Use try/catch blocks to translate exceptions into return values of your exception class.

function Test1 ()

{

     var returnValue = null;

     try

    {

         // test case goes here.

     }

     catch (exception)

     {

          returnValue = new CustomException (exception);

     }

     return (returnValue);

}

3. Add a CheckResult () wrapper function in every script unit and use it when calling other methods.

function BiggerTest ()

{

     CheckResult (Test1 ())

}

function CheckResult (value)

{

     if (value instanceof CustomException)

     {

          throw value;

     }

     else

     {

          return (value);

     }

}

4. Deal with the exceptions at the appropriate level, usually at the level of the Main () function.

Happy Testing,

Glen Accardo