Merge pull request #1413 from leobalter/cxielarko-bigint-ta-3

BigInt+TypedArray tests, splitted

1 files changed, 53 insertions, 0 deletions

diff --git a/test/built-ins/TypedArray/prototype/slice/BigInt/speciesctor-get-species-custom-ctor-returns-another-instance.js b/test/built-ins/TypedArray/prototype/slice/BigInt/speciesctor-get-species-custom-ctor-returns-another-instance.js
new file mode 100644
index 000000000..81be8cd76
--- /dev/null
+++ b/test/built-ins/TypedArray/prototype/slice/BigInt/speciesctor-get-species-custom-ctor-returns-another-instance.js
@@ -0,0 +1,53 @@
+// 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: >
+  Custom @@species constructor may return a totally different TypedArray
+info: |
+  22.2.3.24 %TypedArray%.prototype.slice ( start, end )
+
+  ...
+  9. Let A be ? TypedArraySpeciesCreate(O, « count »).
+  ...
+
+  22.2.4.7 TypedArraySpeciesCreate ( exemplar, argumentList )
+
+  ...
+  3. Let constructor be ? SpeciesConstructor(exemplar, defaultConstructor).
+  4. Return ? TypedArrayCreate(constructor, argumentList).
+
+  7.3.20 SpeciesConstructor ( O, defaultConstructor )
+
+  ...
+  5. Let S be ? Get(C, @@species).
+  ...
+  7. If IsConstructor(S) is true, return S.
+  ...
+
+  22.2.4.6 TypedArrayCreate ( constructor, argumentList )
+
+  1. Let newTypedArray be ? Construct(constructor, argumentList).
+  2. Perform ? ValidateTypedArray(newTypedArray).
+  3. If argumentList is a List of a single Number, then
+    ...
+  4. Return newTypedArray.
+includes: [testBigIntTypedArray.js, compareArray.js]
+features: [BigInt, Symbol.species, TypedArray]
+---*/
+
+testWithBigIntTypedArrayConstructors(function(TA) {
+  var sample = new TA([40n]);
+  var other = new Int8Array([1, 0, 1]);
+  var result;
+
+  sample.constructor = {};
+  sample.constructor[Symbol.species] = function() {
+    return other;
+  };
+
+  result = sample.slice(0, 0);
+
+  assert.sameValue(result, other, "returned another typedarray");
+  assert(compareArray(result, [1, 0, 1]), "the returned object is preserved");
+});