1 files changed, 49 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/JSON/parse/reviver-array-non-configurable-prop-delete.js b/js/src/tests/test262/built-ins/JSON/parse/reviver-array-non-configurable-prop-delete.js
new file mode 100644
index 0000000000..550c232652
--- /dev/null
+++ b/js/src/tests/test262/built-ins/JSON/parse/reviver-array-non-configurable-prop-delete.js
@@ -0,0 +1,49 @@
+// Copyright (C) 2019 Alexey Shvayka. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-internalizejsonproperty
+description: >
+  [[Delete]] does not remove non-configurable properties.
+  If [[Delete]] is unsuccessful, no exception is thrown.
+info: |
+  JSON.parse ( text [ , reviver ] )
+
+  [...]
+  7. If IsCallable(reviver) is true, then
+    [...]
+    d. Return ? InternalizeJSONProperty(root, rootName).
+
+  InternalizeJSONProperty ( holder, name )
+
+  1. Let val be ? Get(holder, name).
+  2. If Type(val) is Object, then
+    a. Let isArray be ? IsArray(val).
+    b. If isArray is true, then
+      [...]
+      iii. Repeat, while I < len,
+        1. Let newElement be ? InternalizeJSONProperty(val, ! ToString(I)).
+        2. If newElement is undefined, then
+          a. Perform ? val.[[Delete]](! ToString(I)).
+
+  OrdinaryDelete ( O, P )
+
+  [...]
+  4. If desc.[[Configurable]] is true, then
+    a. Remove the own property with name P from O.
+---*/
+
+var json = '[1, 2]';
+var arr = JSON.parse(json, function(key, value) {
+  if (key === '0') {
+    Object.defineProperty(this, '1', {configurable: false});
+  }
+  if (key === '1') return;
+
+  return value;
+});
+
+assert.sameValue(arr[0], 1);
+assert(arr.hasOwnProperty('1'));
+assert.sameValue(arr[1], 2);
+
+reportCompare(0, 0);