Adding upstream version 86.0.1.upstream/86.0.1upstream

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

1 files changed, 29 insertions, 0 deletions

diff --git a/js/src/tests/test262/built-ins/JSON/stringify/value-number-negative-zero.js b/js/src/tests/test262/built-ins/JSON/stringify/value-number-negative-zero.js
new file mode 100644
index 0000000000..665340762e
--- /dev/null
+++ b/js/src/tests/test262/built-ins/JSON/stringify/value-number-negative-zero.js
@@ -0,0 +1,29 @@
+// Copyright (C) 2019 Aleksey Shvayka. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-serializejsonproperty
+description: >
+  Negative zero numbers are stringified to "0".
+info: |
+  JSON.stringify ( value [ , replacer [ , space ] ] )
+
+  [...]
+  12. Return ? SerializeJSONProperty(the empty String, wrapper).
+
+  SerializeJSONProperty ( key, holder )
+
+  [...]
+  9. If Type(value) is Number, then
+    a. If value is finite, return ! ToString(value).
+
+  NumberToString ( m )
+
+  [...]
+  2. If m is +0 or -0, return the String "0".
+---*/
+
+assert.sameValue(JSON.stringify(-0), '0');
+assert.sameValue(JSON.stringify(['-0', 0, -0]), '["-0",0,0]');
+assert.sameValue(JSON.stringify({key: -0}), '{"key":0}');
+
+reportCompare(0, 0);