v8/test/debugger/debug/debug-stepnext-do-while.js

// Copyright 2009 the V8 project authors. All rights reserved.
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// modification, are permitted provided that the following conditions are
// met:
//
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Debug = debug.Debug

var exception = null;
var break_break_point_hit_count = 0;

function listener(event, exec_state, event_data, data) {
  try {
    if (event == Debug.DebugEvent.Break) {
      if (break_break_point_hit_count == 0) {
        assertEquals('    debugger;',
                     event_data.sourceLineText());
        assertEquals('runDoWhile', event_data.func().name());
      } else if (break_break_point_hit_count == 1) {
        assertEquals('  } while(condition());',
                     event_data.sourceLineText());
        assertEquals('runDoWhile', event_data.func().name());
      }

      break_break_point_hit_count++;
      // Continue stepping until returned to bottom frame.
      if (exec_state.frameCount() > 1) {
        exec_state.prepareStep(Debug.StepAction.StepNext);
      }

    }
  } catch(e) {
    exception = e;
  }
};

// Add the debug event listener.
Debug.setListener(listener);

function condition() {
  return false;
}

function runDoWhile() {
  do {
    debugger;
  } while(condition());
};

break_break_point_hit_count = 0;
runDoWhile();
assertNull(exception);
assertEquals(4, break_break_point_hit_count);

// Get rid of the debug event listener.
Debug.setListener(null);