Trigger debug event on not yet caught exception in promises.

test/mjsunit/es6/debug-promises-caught-all.js

Index: test/mjsunit/es6/debug-promises-caught-all.js
diff --git a/test/mjsunit/es6/debug-promises-caught-all.js b/test/mjsunit/es6/debug-promises-caught-all.js
new file mode 100644
index 0000000000000000000000000000000000000000..53369e3efc8b6035bede19154e79782e01172369
--- /dev/null
+++ b/test/mjsunit/es6/debug-promises-caught-all.js
@@ -0,0 +1,56 @@
+// 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: --harmony-promises --expose-debug-as debug
+
+// Test debug events when we listen to all exceptions and
+// there is a catch handler for the exception thrown in a Promise.
+// Expectation:
+//  - only the normal Exception debug event is triggered.
+
+Debug = debug.Debug;
+
+var log = [];
+var step = 0;
+
+var p = new Promise(function(resolve, reject) {
+  log.push("resolve");
+  resolve();
+});
+
+var q = p.chain(
+  function() {
+    log.push("throw");
+    throw new Error("caught");
+  });
+
+q.catch(
+  function(e) {
+    assertEquals("caught", e.message);
+  });
+
+function listener(event, exec_state, event_data, data) {
+  try {
+    // Ignore exceptions during startup in stress runs.
+    if (step >= 1) return;
+    assertEquals(["resolve", "end main", "throw"], log);
+    assertTrue(event != Debug.DebugEvent.PendingExceptionInPromise);
+    if (event == Debug.DebugEvent.Exception) {
+      assertEquals("caught", event_data.exception().message);
+      assertEquals(undefined, event_data.promise());
+      step++;
+    }
+  } 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.setBreakOnException();
+Debug.setListener(listener);
+
+log.push("end main");