summaryrefslogtreecommitdiff
path: root/test/built-ins/TypedArrays/ctors-bigint/typedarray-arg/typedarray-arg-other-ctor-buffer-ctor-custom-species.js
diff options
context:
space:
mode:
Diffstat (limited to 'test/built-ins/TypedArrays/ctors-bigint/typedarray-arg/typedarray-arg-other-ctor-buffer-ctor-custom-species.js')
-rw-r--r--test/built-ins/TypedArrays/ctors-bigint/typedarray-arg/typedarray-arg-other-ctor-buffer-ctor-custom-species.js52
1 files changed, 52 insertions, 0 deletions
diff --git a/test/built-ins/TypedArrays/ctors-bigint/typedarray-arg/typedarray-arg-other-ctor-buffer-ctor-custom-species.js b/test/built-ins/TypedArrays/ctors-bigint/typedarray-arg/typedarray-arg-other-ctor-buffer-ctor-custom-species.js
new file mode 100644
index 000000000..f31427329
--- /dev/null
+++ b/test/built-ins/TypedArrays/ctors-bigint/typedarray-arg/typedarray-arg-other-ctor-buffer-ctor-custom-species.js
@@ -0,0 +1,52 @@
+// 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-typedarray
+description: >
+ Use default ArrayBuffer constructor on undefined buffer.constructor.@@species
+info: |
+ 22.2.4.3 TypedArray ( typedArray )
+
+ This description applies only if the TypedArray function is called with at
+ least one argument and the Type of the first argument is Object and that
+ object has a [[TypedArrayName]] internal slot.
+
+ ...
+ 18. Else,
+ a. Let bufferConstructor be ? SpeciesConstructor(srcData, %ArrayBuffer%).
+ b. Let data be ? AllocateArrayBuffer(bufferConstructor, byteLength).
+ ...
+
+ 7.3.20 SpeciesConstructor ( O, defaultConstructor )
+
+ ...
+ 5. Let S be ? Get(C, @@species).
+ 6. If S is either undefined or null, return defaultConstructor.
+ 7. If IsConstructor(S) is true, return S.
+ ...
+
+includes: [testBigIntTypedArray.js]
+features: [BigInt, Symbol.species, TypedArray]
+---*/
+
+var sample1 = new Int8Array();
+var sample2 = new Int16Array();
+
+testWithTypedArrayConstructors(function(TA) {
+ var sample = TA === Int8Array ? sample2 : sample1;
+ var ctor = {};
+ var called = 0;
+ var custom = {};
+
+ sample.buffer.constructor = ctor;
+
+ ctor[Symbol.species] = function() {
+ called++;
+ };
+
+ ctor[Symbol.species].prototype = custom;
+
+ var typedArray = new TA(sample);
+ assert.sameValue(Object.getPrototypeOf(typedArray.buffer), custom);
+ assert.sameValue(called, 0);
+});