js/src/jsapi-tests/testUncaughtSymbol.cpp

   1 /* This Source Code Form is subject to the terms of the Mozilla Public
   2  * License, v. 2.0. If a copy of the MPL was not distributed with this
   3  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   4
   5 #include "js/Exception.h"
   6 #include "jsapi-tests/tests.h"
   7
   8 using JS::CreateError;
   9 using JS::ObjectValue;
  10 using JS::Rooted;
  11 using JS::Value;
  12
  13 enum SymbolExceptionType {
  14   NONE,
  15   SYMBOL_ITERATOR,
  16   SYMBOL_FOO,
  17   SYMBOL_EMPTY,
  18 };
  19
  20 BEGIN_TEST(testUncaughtSymbol) {
  21   CHECK(!execDontReport("throw Symbol.iterator;", __FILE__, __LINE__));
  22   CHECK(GetSymbolExceptionType(cx) == SYMBOL_ITERATOR);
  23
  24   CHECK(!execDontReport("throw Symbol('foo');", __FILE__, __LINE__));
  25   CHECK(GetSymbolExceptionType(cx) == SYMBOL_FOO);
  26
  27   CHECK(!execDontReport("throw Symbol();", __FILE__, __LINE__));
  28   CHECK(GetSymbolExceptionType(cx) == SYMBOL_EMPTY);
  29
  30   return true;
  31 }
  32
  33 static SymbolExceptionType GetSymbolExceptionType(JSContext* cx) {
  34   JS::ExceptionStack exnStack(cx);
  35   MOZ_RELEASE_ASSERT(JS::StealPendingExceptionStack(cx, &exnStack));
  36   MOZ_RELEASE_ASSERT(exnStack.exception().isSymbol());
  37
  38   JS::ErrorReportBuilder report(cx);
  39   MOZ_RELEASE_ASSERT(
  40       report.init(cx, exnStack, JS::ErrorReportBuilder::WithSideEffects));
  41
  42   if (strcmp(report.toStringResult().c_str(),
  43              "uncaught exception: Symbol(Symbol.iterator)") == 0) {
  44     return SYMBOL_ITERATOR;
  45   }
  46   if (strcmp(report.toStringResult().c_str(),
  47              "uncaught exception: Symbol(foo)") == 0) {
  48     return SYMBOL_FOO;
  49   }
  50   if (strcmp(report.toStringResult().c_str(), "uncaught exception: Symbol()") ==
  51       0) {
  52     return SYMBOL_EMPTY;
  53   }
  54   MOZ_CRASH("Unexpected symbol");
  55 }
  56
  57 END_TEST(testUncaughtSymbol)