[debug-wrapper] Further extend the debug wrapper

test/mjsunit/es6/debug-stepin-string-template.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 log = [];
-
-function listener(event, exec_state, event_data, data) {
-  if (event != Debug.DebugEvent.Break) return;
-  try {
-    print(event_data.sourceLineText());
-    var entry = "";
-    for (var i = 0; i < exec_state.frameCount(); i++) {
-      entry += exec_state.frame(i).sourceLineText().substr(-1);
-      entry += exec_state.frame(i).sourceColumn();
-    }
-    log.push(entry);
-    exec_state.prepareStep(Debug.StepAction.StepIn);
-  } catch (e) {
-    exception = e;
-  }
-};
-
-function u(x) {
-  return x.toUpperCase();                         // d
-}                                                 // e
-
-var n = 3;
-
-var o = {
-  toString: function() {
-    return "D";                                   // f
-  }                                               // g
-}
-
-
-
-Debug.setListener(listener);
-debugger;                                         // a
-var s = `1 ${u("a")} 2 ${u("b")} 3 ${n} 4 ${o}`;  // b
-Debug.setListener(null);                          // c
-
-assertNull(exception);
-
-assertEquals([
-  "a0",
-  "b44",
-  "b13",
-  "d2b13",
-  "e0b13",
-  "b25",
-  "d2b25",
-  "e0b25",
-  "f4b44",
-  "g2b44",
-  "c0"
-], log);