From d190e700f34cc2839f80da0beec33979154666eb Mon Sep 17 00:00:00 2001
From: Leonardo Balter <leonardo.balter@gmail.com>
Date: Tue, 28 Jun 2016 16:27:28 -0300
Subject: [PATCH] Add bit-precision tests for TypedArray#copyWithin
---
.../prototype/copyWithin/bit-precision.js | 44 +++++++++++++++++++
1 file changed, 44 insertions(+)
create mode 100644 test/built-ins/TypedArray/prototype/copyWithin/bit-precision.js
diff --git a/test/built-ins/TypedArray/prototype/copyWithin/bit-precision.js b/test/built-ins/TypedArray/prototype/copyWithin/bit-precision.js
new file mode 100644
index 0000000000..f2725a2425
--- /dev/null
+++ b/test/built-ins/TypedArray/prototype/copyWithin/bit-precision.js
@@ -0,0 +1,44 @@
+// 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.copywithin
+es6id: 22.2.3.5
+description: Preservation of bit-level encoding
+info: |
+ Array.prototype.copyWithin (target, start [ , end ] )
+
+ 12. Repeat, while count > 0
+ [...]
+ d. If fromPresent is true, then
+ i. Let fromVal be ? Get(O, fromKey).
+ ii. Perform ? Set(O, toKey, fromVal, true).
+includes: [nans.js, compareArray.js, testTypedArray.js]
+---*/
+
+function body(FloatArray) {
+ var subject = new FloatArray(distinctNaNs.length * 2);
+
+ distinctNaNs.forEach(function(v, i) {
+ subject[i] = v;
+ });
+
+ var originalBytes, copiedBytes;
+ var length = distinctNaNs.length * FloatArray.BYTES_PER_ELEMENT;
+
+ originalBytes = new Uint8Array(
+ subject.buffer,
+ 0,
+ length
+ );
+
+ subject.copyWithin(distinctNaNs.length, 0);
+ copiedBytes = new Uint8Array(
+ subject.buffer,
+ length
+ );
+
+ assert(compareArray(originalBytes, copiedBytes));
+}
+
+testWithTypedArrayConstructors(body, [Float32Array, Float64Array]);
--
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