Adding upstream version 86.0.1.upstream/86.0.1upstream

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

1 files changed, 21 insertions, 0 deletions

diff --git a/js/src/tests/test262/language/expressions/optional-chaining/optional-chain-prod-arguments.js b/js/src/tests/test262/language/expressions/optional-chaining/optional-chain-prod-arguments.js
new file mode 100644
index 0000000000..c9d9874078
--- /dev/null
+++ b/js/src/tests/test262/language/expressions/optional-chaining/optional-chain-prod-arguments.js
@@ -0,0 +1,21 @@
+// Copyright 2020 Salesforce.com, Inc. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: prod-OptionalExpression
+description: >
+  Productions for ?. Arguments
+info: |
+  OptionalChain[Yield, Await]:
+    ?. Arguments
+features: [optional-chaining]
+---*/
+
+function fn(arg1, arg2, arg3 = 0) {
+  return arg1 + arg2 + arg3;
+}
+
+assert.sameValue(fn?.(10, 20), 30, 'regular');
+assert.sameValue(String?.(42), '42', 'built-in');
+assert.sameValue(fn ?. (...[10, 20, 40]), 70, 'spread');
+
+reportCompare(0, 0);