[debugger] Basic scope functionality and exception events in wrapper

test/mjsunit/debug-allscopes-on-debugger.js

-// Copyright 2015 the V8 project authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-// Flags: --expose-debug-as debug
-
-Debug = debug.Debug
-var exception = null;
-var break_count = 0;
-
-function listener(event, exec_state, event_data, data) {
-  try {
-    if (event == Debug.DebugEvent.Break) {
-      assertTrue(exec_state.frameCount() != 0, "FAIL: Empty stack trace");
-      // Count number of expected breakpoints in this source file.
-      if (!break_count) {
-        var source_text = exec_state.frame(0).func().script().source();
-        expected_breaks = source_text.match(/\/\/\s*Break\s+\d+\./g).length;
-        print("Expected breaks: " + expected_breaks);
-      }
-      var frameMirror = exec_state.frame(0);
-
-      frameMirror.allScopes();
-      var source = frameMirror.sourceLineText();
-      print("paused at: " + source);
-      assertTrue(source.indexOf("// Break " + break_count + ".") > 0,
-                 "Unexpected pause at: " + source + "\n" +
-                 "Expected: // Break " + break_count + ".");
-      ++break_count;
-
-      if (break_count !== expected_breaks) {
-        exec_state.prepareStep(Debug.StepAction.StepIn);
-        print("Next step prepared");
-      }
-    }
-  } catch(e) {
-    exception = e;
-    print(e, e.stack);
-  }
-};
-
-Debug.setListener(listener);
-
-var sum = 0;
-(function (){
-  'use strict';
-
-  debugger; // Break 0.
-  var i = 0; // Break 1.
-  i++; // Break 2.
-  i++; // Break 3.
-  debugger;  // Break 4.
-  return i; // Break 5.
-}()); // Break 6.
-
-assertNull(exception); // Break 7.
-assertEquals(expected_breaks, break_count);
-
-Debug.setListener(null);