Adding upstream version 115.7.0esr.upstream/115.7.0esrupstream

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

1 files changed, 70 insertions, 0 deletions

diff --git a/js/src/tests/test262/built-ins/TypedArrayConstructors/internals/OwnPropertyKeys/integer-indexes-resizable-array-buffer-auto.js b/js/src/tests/test262/built-ins/TypedArrayConstructors/internals/OwnPropertyKeys/integer-indexes-resizable-array-buffer-auto.js
new file mode 100644
index 0000000000..a2ae71b171
--- /dev/null
+++ b/js/src/tests/test262/built-ins/TypedArrayConstructors/internals/OwnPropertyKeys/integer-indexes-resizable-array-buffer-auto.js
@@ -0,0 +1,70 @@
+// |reftest| skip -- resizable-arraybuffer is not supported
+// Copyright (C) 2021 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-integer-indexed-exotic-objects-ownpropertykeys
+description: returned keys reflect resized ArrayBuffer for a dynamically-sized TypedArray
+info: |
+  9.4.5.6 [[OwnPropertyKeys]] ()
+
+  ...
+  3. Let getBufferByteLength be !
+     MakeIdempotentArrayBufferByteLengthGetter(SeqCst).
+  4. Let len be IntegerIndexedObjectLength(O, getBufferByteLength).
+  5. For each integer i starting with 0 such that i < len, in ascending order,
+    a. Add ! ToString(i) as the last element of keys.
+  ...
+includes: [testTypedArray.js]
+features: [Reflect, TypedArray, resizable-arraybuffer]
+---*/
+
+// If the host chooses to throw as allowed by the specification, the observed
+// behavior will be identical to the case where `ArrayBuffer.prototype.resize`
+// has not been implemented. The following assertion prevents this test from
+// passing in runtimes which have not implemented the method.
+assert.sameValue(typeof ArrayBuffer.prototype.resize, "function");
+
+testWithTypedArrayConstructors(function(TA) {
+  var BPE = TA.BYTES_PER_ELEMENT;
+  var ab = new ArrayBuffer(BPE * 4, {maxByteLength: BPE * 5});
+  var array = new TA(ab, BPE);
+  var expected = "0,1,2";
+
+  assert.sameValue(Reflect.ownKeys(array).join(","), expected, "initial");
+
+  try {
+    ab.resize(BPE * 5);
+    expected = "0,1,2,3";
+  } catch (_) {}
+
+  assert.sameValue(Reflect.ownKeys(array).join(","), expected, "following grow");
+
+  try {
+    ab.resize(BPE * 3);
+    expected = "0,1";
+  } catch (_) {}
+
+  assert.sameValue(
+    Reflect.ownKeys(array).join(","), expected, "following shrink (within bounds)"
+  );
+
+  try {
+    ab.resize(BPE);
+    expected = "";
+  } catch (_) {}
+
+  assert.sameValue(
+    Reflect.ownKeys(array).join(","), expected, "following shrink (on boundary)"
+  );
+
+  try {
+    ab.resize(0);
+    expected = "";
+  } catch (_) {}
+
+  assert.sameValue(
+    Reflect.ownKeys(array).join(","), expected, "following shrink (out of bounds)"
+  );
+});
+
+reportCompare(0, 0);