Adding upstream version 86.0.1.upstream/86.0.1upstream

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

1 files changed, 20 insertions, 0 deletions

diff --git a/js/src/tests/test262/language/expressions/optional-chaining/runtime-semantics-evaluation.js b/js/src/tests/test262/language/expressions/optional-chaining/runtime-semantics-evaluation.js
new file mode 100644
index 0000000000..a87af57856
--- /dev/null
+++ b/js/src/tests/test262/language/expressions/optional-chaining/runtime-semantics-evaluation.js
@@ -0,0 +1,20 @@
+// Copyright 2019 Google, Inc.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: prod-OptionalExpression
+description: >
+  accessing optional value on undefined or null returns undefined.
+info: |
+  If baseValue is undefined or null, then
+    Return undefined.
+features: [optional-chaining]
+---*/
+
+const nul = null;
+const undf = undefined;
+assert.sameValue(undefined, nul?.a);
+assert.sameValue(undefined, undf?.b);
+assert.sameValue(undefined, null?.a);
+assert.sameValue(undefined, undefined?.b);
+
+reportCompare(0, 0);