Adding upstream version 86.0.1.upstream/86.0.1upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

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)