[debug-wrapper] Further extend the debug wrapper

test/mjsunit/es6/debug-promises/throw-uncaught-uncaught.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 --allow-natives-syntax
-
-// Test debug events when we only listen to uncaught exceptions and
-// there is a catch handler for the exception thrown in a Promise.
-// We expect an Exception debug event with a promise to be triggered.
-
-Debug = debug.Debug;
-
-var expected_events = 1;
-var log = [];
-
-var p = new Promise(function(resolve, reject) {
-  log.push("resolve");
-  resolve();
-});
-
-var q = p.then(
-  function() {
-    log.push("throw");
-    throw new Error("uncaught");  // event
-  });
-
-function listener(event, exec_state, event_data, data) {
-  if (event == Debug.DebugEvent.AsyncTaskEvent) return;
-  try {
-    if (event == Debug.DebugEvent.Exception) {
-      expected_events--;
-      assertTrue(expected_events >= 0);
-      assertEquals("uncaught", event_data.exception().message);
-      assertTrue(event_data.promise() instanceof Promise);
-      assertSame(q, event_data.promise());
-      assertTrue(event_data.uncaught());
-      // Assert that the debug event is triggered at the throw site.
-      assertTrue(exec_state.frame(0).sourceLineText().indexOf("// event") > 0);
-    }
-  } catch (e) {
-    %AbortJS(e + "\n" + e.stack);
-  }
-}
-
-Debug.setBreakOnUncaughtException();
-Debug.setListener(listener);
-
-log.push("end main");
-
-function testDone(iteration) {
-  function checkResult() {
-    try {
-      assertTrue(iteration < 10);
-      if (expected_events === 0) {
-        assertEquals(["resolve", "end main", "throw"], log);
-      } else {
-        testDone(iteration + 1);
-      }
-    } catch (e) {
-      %AbortJS(e + "\n" + e.stack);
-    }
-  }
-
-  %EnqueueMicrotask(checkResult);
-}
-
-testDone(0);