diff options
Diffstat (limited to 'js/src/jsapi-tests/testSameValue.cpp')
| -rw-r--r-- | js/src/jsapi-tests/testSameValue.cpp | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/js/src/jsapi-tests/testSameValue.cpp b/js/src/jsapi-tests/testSameValue.cpp new file mode 100644 index 0000000000..c2e12207f2 --- /dev/null +++ b/js/src/jsapi-tests/testSameValue.cpp @@ -0,0 +1,26 @@ +/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- + * vim: set ts=8 sts=2 et sw=2 tw=80: + */ +/* 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/Equality.h" // JS::SameValue +#include "jsapi-tests/tests.h" + +BEGIN_TEST(testSameValue) { + /* + * NB: passing a double that fits in an integer jsval is API misuse. As a + * matter of defense in depth, however, JS::SameValue should return the + * correct result comparing a positive-zero double to a negative-zero + * double, and this is believed to be the only way to make such a + * comparison possible. + */ + JS::RootedValue v1(cx, JS::DoubleValue(0.0)); + JS::RootedValue v2(cx, JS::DoubleValue(-0.0)); + bool same; + CHECK(JS::SameValue(cx, v1, v2, &same)); + CHECK(!same); + return true; +} +END_TEST(testSameValue) |