Adding upstream version 115.7.0esr.upstream/115.7.0esrupstream

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

1 files changed, 41 insertions, 0 deletions

diff --git a/js/src/tests/test262/built-ins/TypedArray/prototype/slice/bit-precision.js b/js/src/tests/test262/built-ins/TypedArray/prototype/slice/bit-precision.js
new file mode 100644
index 0000000000..1b4348e330
--- /dev/null
+++ b/js/src/tests/test262/built-ins/TypedArray/prototype/slice/bit-precision.js
@@ -0,0 +1,41 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-%typedarray%.prototype.slice
+description: Preservation of bit-level encoding
+info: |
+  [...]
+  15. Else if count > 0, then
+      [...]
+      e. NOTE: If srcType and targetType are the same, the transfer must be
+         performed in a manner that preserves the bit-level encoding of the
+         source data.
+      f. Let srcByteOffet be the value of O's [[ByteOffset]] internal slot.
+      g. Let targetByteIndex be A's [[ByteOffset]] internal slot.
+      h. Let srcByteIndex be (k × elementSize) + srcByteOffet.
+      i. Let limit be targetByteIndex + count × elementSize.
+      j. Repeat, while targetByteIndex < limit
+         i. Let value be GetValueFromBuffer(srcBuffer, srcByteIndex, "Uint8").
+         ii. Perform SetValueInBuffer(targetBuffer, targetByteIndex, "Uint8",
+             value).
+         iii. Increase srcByteIndex by 1.
+         iv. Increase targetByteIndex by 1.
+includes: [nans.js, compareArray.js, testTypedArray.js]
+features: [TypedArray]
+---*/
+
+function body(FloatArray) {
+  var subject = new FloatArray(NaNs);
+  var sliced, subjectBytes, slicedBytes;
+
+  sliced = subject.slice();
+
+  subjectBytes = new Uint8Array(subject.buffer);
+  slicedBytes = new Uint8Array(sliced.buffer);
+
+  assert(compareArray(subjectBytes, slicedBytes));
+}
+
+testWithTypedArrayConstructors(body, [Float32Array, Float64Array]);
+
+reportCompare(0, 0);