Trigger exception debug events on Promise reject.

test/mjsunit/es6/debug-promises-undefined-reject.js

-// Copyright 2014 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
-
-// Test debug events when an exception is thrown inside a Promise, which is
-// caught by a custom promise, which has no reject handler.
-// We expect an Exception event with a promise to be triggered.
-
-Debug = debug.Debug;
-
-var log = [];
-var step = 0;
-
-var p = new Promise(function(resolve, reject) {
-  log.push("resolve");
-  resolve();
-});
-
-function MyPromise(resolver) {
-  var reject = undefined;
-  var resolve = function() { };
-  log.push("construct");
-  resolver(resolve, reject);
-};
-
-MyPromise.prototype = p;
-p.constructor = MyPromise;
-
-var q = p.chain(
-  function() {
-    log.push("throw caught");
-    throw new Error("caught");  // event
-  });
-
-function listener(event, exec_state, event_data, data) {
-  try {
-    if (event == Debug.DebugEvent.Exception) {
-      assertEquals(["resolve", "construct", "end main", "throw caught"], log);
-      assertEquals("undefined is not a function",
-                   event_data.exception().message);
-      assertEquals(q, event_data.promise());
-    }
-  } catch (e) {
-    // Signal a failure with exit code 1.  This is necessary since the
-    // debugger swallows exceptions and we expect the chained function
-    // and this listener to be executed after the main script is finished.
-    print("Unexpected exception: " + e + "\n" + e.stack);
-    quit(1);
-  }
-}
-
-Debug.setBreakOnUncaughtException();
-Debug.setListener(listener);
-
-log.push("end main");