1 files changed, 88 insertions, 0 deletions
diff --git a/deps/v8/test/mjsunit/debug-exceptions.js b/deps/v8/test/mjsunit/debug-exceptions.js
new file mode 100644
index 0000000000..1a0e222d51
--- /dev/null
+++ b/deps/v8/test/mjsunit/debug-exceptions.js
@@ -0,0 +1,88 @@
+// Copyright 2016 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
+
+
+Debug = debug.Debug
+
+let error = false;
+let uncaught;
+
+function listener(event, exec_state, event_data, data) {
+  if (event != Debug.DebugEvent.Exception) return;
+  try {
+    uncaught = event_data.uncaught();
+  } catch (e) {
+    error = true;
+  }
+}
+
+Debug.setBreakOnException();
+Debug.setListener(listener);
+
+
+function assertCaught(f) {
+  try {f()} finally {
+    assertFalse(uncaught);
+    return;
+  }
+}
+
+function assertUncaught(f) {
+  try {f()} finally {
+    assertTrue(uncaught);
+    return;
+  }
+}
+
+
+assertUncaught(() => {
+  for (var a of [1, 2, 3]) {
+    throw a
+  }
+});
+
+assertUncaught(() => {
+  for (var a of [1, 2, 3]) {
+    try {throw a} finally {}
+  }
+});
+
+assertCaught(() => {
+  for (var a of [1, 2, 3]) {
+    try {
+      try {throw a} finally {}
+    } catch(_) {}
+  }
+});
+
+assertCaught(() => {
+  try {
+    for (var a of [1, 2, 3]) {
+      try {throw a} finally {}
+    }
+  } catch(_) {}
+});
+
+
+// Check that an internal exception in our yield* desugaring is not observable.
+{
+  uncaught = null;
+
+  let iter = {
+    next() {return {value:42, done:false}},
+    throw() {return {done:true}}
+  };
+  let iterable = {[Symbol.iterator]() {return iter}};
+  function* f() { yield* iterable }
+
+  let g = f();
+  g.next();
+  assertEquals({value: undefined, done: true}, g.throw());
+  assertNull(uncaught);  // No exception event was generated.
+}
+
+
+assertFalse(error);