Adding upstream version 115.7.0esr.upstream/115.7.0esrupstream

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

1 files changed, 58 insertions, 0 deletions

diff --git a/js/src/tests/test262/built-ins/Atomics/exchange/good-views.js b/js/src/tests/test262/built-ins/Atomics/exchange/good-views.js
new file mode 100644
index 0000000000..99de503ada
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Atomics/exchange/good-views.js
@@ -0,0 +1,58 @@
+// |reftest| skip-if(!this.hasOwnProperty('Atomics')||!this.hasOwnProperty('SharedArrayBuffer')||(this.hasOwnProperty('getBuildConfiguration')&&getBuildConfiguration()['arm64-simulator'])) -- Atomics,SharedArrayBuffer is not enabled unconditionally, ARM64 Simulator cannot emulate atomics
+// Copyright (C) 2017 Mozilla Corporation.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-atomics.exchange
+description: Test Atomics.exchange on arrays that allow atomic operations.
+includes: [testAtomics.js, testTypedArray.js]
+features: [ArrayBuffer, Atomics, DataView, SharedArrayBuffer, Symbol, TypedArray]
+---*/
+
+const sab = new SharedArrayBuffer(1024);
+const ab = new ArrayBuffer(16);
+const views = intArrayConstructors.slice();
+
+testWithTypedArrayConstructors(function(TA) {
+  // Make it interesting - use non-zero byteOffsets and non-zero indexes.
+
+  const view = new TA(sab, 32, 20);
+  const control = new TA(ab, 0, 2);
+
+  view[8] = 0;
+  assert.sameValue(Atomics.exchange(view, 8, 10), 0,
+    'Atomics.exchange(view, 8, 10) returns 0');
+  assert.sameValue(view[8], 10, 'The value of view[8] is 10');
+
+  assert.sameValue(Atomics.exchange(view, 8, -5), 10,
+    'Atomics.exchange(view, 8, -5) returns 10');
+  control[0] = -5;
+  assert.sameValue(view[8], control[0], 'The value of view[8] equals the value of `control[0]` (-5)');
+
+  view[3] = -5;
+  control[0] = -5;
+  assert.sameValue(Atomics.exchange(view, 3, 0), control[0],
+    'Atomics.exchange(view, 3, 0) returns the value of `control[0]` (-5)');
+
+  control[0] = 12345;
+  view[3] = 12345;
+  assert.sameValue(Atomics.exchange(view, 3, 0), control[0],
+    'Atomics.exchange(view, 3, 0) returns the value of `control[0]` (12345)');
+
+  control[0] = 123456789;
+  view[3] = 123456789;
+  assert.sameValue(Atomics.exchange(view, 3, 0), control[0],
+    'Atomics.exchange(view, 3, 0) returns the value of `control[0]` (123456789)');
+
+  // In-bounds boundary cases for indexing
+  testWithAtomicsInBoundsIndices(function(IdxGen) {
+    let Idx = IdxGen(view);
+    view.fill(0);
+    // Atomics.store() computes an index from Idx in the same way as other
+    // Atomics operations, not quite like view[Idx].
+    Atomics.store(view, Idx, 37);
+    assert.sameValue(Atomics.exchange(view, Idx, 0), 37, 'Atomics.exchange(view, Idx, 0) returns 37');
+  });
+}, views);
+
+reportCompare(0, 0);