Re: Some trouble writing a testcase

[Adam Jocksch <ajocksch@redhat.com>]

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Adam Jocksch wrote:
> Ok, I'm trying to write a simple testcase for the newly created 
> Display class and I'm uncovering some of the rust that's built up over 
> that last few months :P. Essentially the test I want to create 
> consists of having a program:
>
>  int x;
>  x = 1; *
>  x = 2; **
>
> Then creating breakpoints at the two lines marked by * and ** and then 
> printing out the variable values (via Display) at those two points. 
> Right now I'm using AttachedDaemonProcess to create a proc that's 
> attached and blocked at the first address of the program. However I'm 
> having some difficulties find the right sequence of calls to add the 
> breakpoints. Currently I'm trying LineBreakoint.addLineBreakpoint() 
> and then adding my own delegate observer to pick up on the calls. Is 
> this correct, or is there something else I should be doing?
I've attached the test case as it currently stands. It currently times 
out at the assertRunUntilStop("adding bp") on line 91. I also noticed 
that the addedTo/deletedFrom/addFailed messages are not being forwarded 
to the observer delegate. I added this to my local build but it didnt' 
change anything.

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// This file is part of the program FRYSK.
//
// Copyright 2007, Red Hat Inc.
//
// FRYSK is free software; you can redistribute it and/or modify it
// under the terms of the GNU General Public License as published by
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//
// FRYSK is distributed in the hope that it will be useful, but
// WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// General Public License for more details.
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package frysk.rt;

import frysk.Config;
import frysk.proc.Manager;
import frysk.proc.Task;
import frysk.proc.TestLib;
import frysk.rt.Breakpoint.PersistentBreakpoint;

public class TestDisplay
    extends TestLib
{
  
  public void testVarValueChanged()
  {
    AttachedDaemonProcess process = 
      	new AttachedDaemonProcess(new String[]{getExecPath("funit-rt-varchange")});
    assertNotNull(process.mainTask);
    SteppingEngine.setProc(process.mainTask.getProc());
    
    LineBreakpoint brk1 = 
      	LineBreakpoint.addLineBreakpoint(process.mainTask, 
      	                                 Config.getRootSrcDir()+
      	                                 "/frysk-core/frysk/rt/pkglibdir/funit-rt-varchange.c",
      	                                 66);
    brk1.setObserverDelegate(new BreakpointObserver()
    {
    
      public void deletedFrom (Object observable)
      {
	System.err.println("bp deleted");
      }
    
      public void addedTo (Object observable)
      {
	System.err.println("Added");
	Manager.eventLoop.requestStop();
      }
    
      public void addFailed (Object observable, Throwable w)
      {
	System.err.println("failed");
	Manager.eventLoop.requestStop();
      }
    
      public void updateHit (PersistentBreakpoint breakpoint, Task task,
    			 long address)
      {
	System.err.println("breakpoint at " + address);
	Manager.eventLoop.requestStop();
      }
    
    });
    assertRunUntilStop("adding bp");
    
    process.resume();
    
  }
}