From 9280e1f872151f68cac99bc0c674527813a91cf9 Mon Sep 17 00:00:00 2001
From: Mathias Bynens <mathias@qiwi.be>
Date: Mon, 4 Feb 2019 11:58:05 -0700
Subject: [PATCH] Add tests for %TypedArray%.prototype.sort stability (#2062)
https://github.com/tc39/ecma262/pull/1433
---
test/built-ins/TypedArray/stability.js | 45 ++++++++++++++++++++++++++
1 file changed, 45 insertions(+)
create mode 100644 test/built-ins/TypedArray/stability.js
diff --git a/test/built-ins/TypedArray/stability.js b/test/built-ins/TypedArray/stability.js
new file mode 100644
index 0000000000..3bdd6fc6ed
--- /dev/null
+++ b/test/built-ins/TypedArray/stability.js
@@ -0,0 +1,45 @@
+// Copyright (C) 2019 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-%typedarray%.prototype.sort
+description: Stability of %TypedArray%.prototype.sort.
+info: |
+ https://github.com/tc39/ecma262/pull/1433
+includes: [testTypedArray.js, compareArray.js]
+features: [TypedArray]
+---*/
+
+// Treat 0..3, 4..7, etc. as equal.
+const compare = (a, b) => (a / 4 | 0) - (b / 4 | 0);
+
+testWithTypedArrayConstructors((TA) => {
+ // Create an array of the form `[0, 1, …, 126, 127]`.
+ const array = Array.from({ length: 128 }, (_, i) => i);
+
+ const typedArray1 = new TA(array);
+ assert(compareArray(
+ typedArray1.sort(compare),
+ array
+ ), 'pre-sorted');
+
+ // Reverse `array` in-place so it becomes `[127, 126, …, 1, 0]`.
+ array.reverse();
+
+ const typedArray2 = new TA(array);
+ assert(compareArray(
+ typedArray2.sort(compare),
+ [
+ 3, 2, 1, 0, 7, 6, 5, 4, 11, 10, 9, 8,
+ 15, 14, 13, 12, 19, 18, 17, 16, 23, 22, 21, 20,
+ 27, 26, 25, 24, 31, 30, 29, 28, 35, 34, 33, 32,
+ 39, 38, 37, 36, 43, 42, 41, 40, 47, 46, 45, 44,
+ 51, 50, 49, 48, 55, 54, 53, 52, 59, 58, 57, 56,
+ 63, 62, 61, 60, 67, 66, 65, 64, 71, 70, 69, 68,
+ 75, 74, 73, 72, 79, 78, 77, 76, 83, 82, 81, 80,
+ 87, 86, 85, 84, 91, 90, 89, 88, 95, 94, 93, 92,
+ 99, 98, 97, 96, 103, 102, 101, 100, 107, 106, 105, 104,
+ 111, 110, 109, 108, 115, 114, 113, 112, 119, 118, 117, 116,
+ 123, 122, 121, 120, 127, 126, 125, 124,
+ ]
+ ), 'not presorted');
+});
--
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