[debug-wrapper] Further extend the debug wrapper

test/mjsunit/debug-constructed-by.js

-// Copyright 2008 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
-// Get the Debug object exposed from the debug context global object.
-Debug = debug.Debug
-
-// Simple constructor.
-function Point(x,y) {}
-
-// Create mirror for the constructor.
-var ctor = debug.MakeMirror(Point);
-
-// Initially no instances.
-assertEquals(0, ctor.constructedBy().length);
-assertEquals(0, ctor.constructedBy(0).length);
-assertEquals(0, ctor.constructedBy(1).length);
-assertEquals(0, ctor.constructedBy(10).length);
-
-// Create an instance.
-var p = new Point();
-assertEquals(1, ctor.constructedBy().length);
-assertEquals(1, ctor.constructedBy(0).length);
-assertEquals(1, ctor.constructedBy(1).length);
-assertEquals(1, ctor.constructedBy(10).length);
-
-
-// Create 10 more instances making for 11.
-ps = [];
-for (var i = 0; i < 10; i++) {
-  ps.push(new Point());
-}
-assertEquals(11, ctor.constructedBy().length);
-assertEquals(11, ctor.constructedBy(0).length);
-assertEquals(1, ctor.constructedBy(1).length);
-assertEquals(10, ctor.constructedBy(10).length);