Deleting added TestedApps shows strange behaviour in python

[stein_oddvar_ra]

Hi,

I've just noticed something odd.

Our test application is adding a list of TestedApps for use and to be sure no apps are added twice, we purge all existing TestedApps first. This works when we're using JScript or CScript like this:

function del_applications()
{
  // Delete all TestedApps
  var count = TestedApps["Count"];
  for(var i = 0; i < count ; i++)
  {
    TestedApps["Delete"](0);
  }
}

Using Pyhon however gives a strange behaviour. This is the python script:

def del_applications():
  # Deletes all TestedApps
  count = TestedApps.Count
  for i in range(count):
    TestedApps.Delete(i)

The python script deletes exactly half of the applications, then the next time I run it, it deletes half of the remaining applications. I can do this until eventually I have deleted all the applications in TestedApps.

I'm using TestComplete 14.91.341.7 x64 on Windows 10 Standard, 64-bit (10.0 Build 17763)

[Marsha_R]

Just curious, why not just create a list of Tested Apps once and leave it there?  

[stein_oddvar_ra]

Yeah, why not?

Legacy is the short and long answer. We probably can work around it, but since our test suite is a decade old by now the risk of breaking something is holding us back...

[Marsha_R]

Because you can add them once manually and never have to do it again and never have it interfere with a test.

[stein_oddvar_ra]

Yes, I know.

I can work around it.

I'm curious about the reason for Python not being able to delete more than half of the TestedApps in one go, though.

[ebarbera]

Hi @stein_oddvar_ra - 

Is the count in the python script returning the full number of applications? 

Emma

[stein_oddvar_ra]

Hi, @ebarbera 

Yes it does. I use the TestedApps.Count value to set the number of times to iterate. The code is simple:

def del_applications():
  # Deletes all applications from the TestedApps
  numApps = TestedApps.Count
  Log.Message(f"Deleting {numApps} apps from TestedApps.")
  for i in range(numApps):
    if not TestedApps.Delete(i):
    Log.Warning(f"Could not delete app index {i} from TestedApps")

It logs the correct number of apps, but deletes only the first half of them. The rest fails.

The bug is present in TestComplete 15.10.445.7