1 files changed, 57 insertions, 0 deletions
diff --git a/js/src/jsapi-tests/testUncaughtSymbol.cpp b/js/src/jsapi-tests/testUncaughtSymbol.cpp
new file mode 100644
index 0000000000..ce026a48c6
--- /dev/null
+++ b/js/src/jsapi-tests/testUncaughtSymbol.cpp
@@ -0,0 +1,57 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "js/Exception.h"
+#include "jsapi-tests/tests.h"
+
+using JS::CreateError;
+using JS::ObjectValue;
+using JS::Rooted;
+using JS::Value;
+
+enum SymbolExceptionType {
+  NONE,
+  SYMBOL_ITERATOR,
+  SYMBOL_FOO,
+  SYMBOL_EMPTY,
+};
+
+BEGIN_TEST(testUncaughtSymbol) {
+  CHECK(!execDontReport("throw Symbol.iterator;", __FILE__, __LINE__));
+  CHECK(GetSymbolExceptionType(cx) == SYMBOL_ITERATOR);
+
+  CHECK(!execDontReport("throw Symbol('foo');", __FILE__, __LINE__));
+  CHECK(GetSymbolExceptionType(cx) == SYMBOL_FOO);
+
+  CHECK(!execDontReport("throw Symbol();", __FILE__, __LINE__));
+  CHECK(GetSymbolExceptionType(cx) == SYMBOL_EMPTY);
+
+  return true;
+}
+
+static SymbolExceptionType GetSymbolExceptionType(JSContext* cx) {
+  JS::ExceptionStack exnStack(cx);
+  MOZ_RELEASE_ASSERT(JS::StealPendingExceptionStack(cx, &exnStack));
+  MOZ_RELEASE_ASSERT(exnStack.exception().isSymbol());
+
+  JS::ErrorReportBuilder report(cx);
+  MOZ_RELEASE_ASSERT(
+      report.init(cx, exnStack, JS::ErrorReportBuilder::WithSideEffects));
+
+  if (strcmp(report.toStringResult().c_str(),
+             "uncaught exception: Symbol(Symbol.iterator)") == 0) {
+    return SYMBOL_ITERATOR;
+  }
+  if (strcmp(report.toStringResult().c_str(),
+             "uncaught exception: Symbol(foo)") == 0) {
+    return SYMBOL_FOO;
+  }
+  if (strcmp(report.toStringResult().c_str(), "uncaught exception: Symbol()") ==
+      0) {
+    return SYMBOL_EMPTY;
+  }
+  MOZ_CRASH("Unexpected symbol");
+}
+
+END_TEST(testUncaughtSymbol)