[debug-wrapper] Further extend the debug wrapper

test/mjsunit/regress/regress-crbug-171715.js

-// Copyright 2013 the V8 project authors. All rights reserved.
-// Redistribution and use in source and binary forms, with or without
-// modification, are permitted provided that the following conditions are
-// met:
-//
-//     * Redistributions of source code must retain the above copyright
-//       notice, this list of conditions and the following disclaimer.
-//     * Redistributions in binary form must reproduce the above
-//       copyright notice, this list of conditions and the following
-//       disclaimer in the documentation and/or other materials provided
-//       with the distribution.
-//     * Neither the name of Google Inc. nor the names of its
-//       contributors may be used to endorse or promote products derived
-//       from this software without specific prior written permission.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-// Flags: --expose-debug-as debug
-
-Debug = debug.Debug
-
-var error = null;
-var test = 0;
-
-function check_v(expected, exec_state, frame_id) {
-  assertEquals(expected, exec_state.frame(frame_id).evaluate('v').value());
-}
-
-function listener(event, exec_state, event_data, data) {
-  try {
-    if (event != Debug.DebugEvent.Break) return;
-    test++;
-    if (test == 1) {
-      check_v('inner0', exec_state, 0);
-      check_v('inner0', exec_state, 1);
-      check_v('outer',  exec_state, 2);
-      assertArrayEquals(["a", "b", "c"],
-                        exec_state.frame(0).evaluate('arguments').value());
-    } else if (test == 2) {
-      check_v('inner1', exec_state, 0);
-      check_v('inner1', exec_state, 1);
-      check_v('outer',  exec_state, 2);
-      assertArrayEquals(["a", "b", "c"],
-                        exec_state.frame(0).evaluate('arguments').value());
-    } else {
-      assertEquals(3, test);
-      check_v('inner2', exec_state, 0);
-      check_v('inner1', exec_state, 1);
-      check_v('inner1', exec_state, 2);
-      check_v('outer',  exec_state, 3);
-      assertArrayEquals(["x", "y", "z"],
-                        exec_state.frame(0).evaluate('arguments').value());
-      assertArrayEquals(["a", "b", "c"],
-                        exec_state.frame(1).evaluate('arguments').value());
-    }
-  } catch (e) {
-    error = e;
-  }
-};
-
-Debug.setListener(listener);
-
-var v = 'outer';
-(function() {  // Test 1 and 2
-  var v = 'inner0';
-  eval("debugger; var v = 'inner1'; debugger;");
-  assertEquals('inner1', v);  // Overwritten by local eval.
-})("a", "b", "c");
-assertNull(error);
-
-(function() {  // Test 3
-  var v = 'inner0';  // Local eval overwrites this value.
-  eval("var v = 'inner1'; " +
-       "(function() { var v = 'inner2'; debugger; })('x', 'y', 'z');");
-  assertEquals('inner1', v);  // Overwritten by local eval.
-})("a", "b", "c");
-assertNull(error);