From 6fdf6dd752cfaf570f79809903c6bb9a3d8941ba Mon Sep 17 00:00:00 2001
From: Leonardo Balter <leonardo.balter@gmail.com>
Date: Mon, 11 Jan 2016 16:20:39 -0500
Subject: [PATCH] Add tests for Subclassing the built-in TypedArray Objects
---
.../TypedArray/regular-subclassing.js | 35 +++++++++++++++
.../TypedArray/super-must-be-called.js | 45 +++++++++++++++++++
2 files changed, 80 insertions(+)
create mode 100644 test/language/subclassing/TypedArray/regular-subclassing.js
create mode 100644 test/language/subclassing/TypedArray/super-must-be-called.js
diff --git a/test/language/subclassing/TypedArray/regular-subclassing.js b/test/language/subclassing/TypedArray/regular-subclassing.js
new file mode 100644
index 0000000000..f1111e5e8a
--- /dev/null
+++ b/test/language/subclassing/TypedArray/regular-subclassing.js
@@ -0,0 +1,35 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+es6id: 22.2.4
+description: Subclassing TypedArrays
+info: >
+ 22.2.4 The TypedArray Constructors
+
+ ...
+
+ The TypedArray constructors are designed to be subclassable. They may be used
+ as the value of an extends clause of a class definition. Subclass constructors
+ that intend to inherit the specified TypedArray behaviour must include a super
+ call to the TypedArray constructor to create and initialize the subclass
+ instance with the internal state necessary to support the
+ %TypedArray%.prototype built-in methods.
+---*/
+
+[
+ Int8Array,
+ Uint8Array,
+ Uint8ClampedArray,
+ Int16Array,
+ Uint16Array,
+ Int32Array,
+ Uint32Array,
+ Float32Array,
+ Float64Array
+].forEach(function(Constructor) {
+ class Typed extends Constructor {}
+
+ var arr = new Typed(2);
+
+ assert.sameValue(arr.length, 2);
+});
diff --git a/test/language/subclassing/TypedArray/super-must-be-called.js b/test/language/subclassing/TypedArray/super-must-be-called.js
new file mode 100644
index 0000000000..912d9dc8de
--- /dev/null
+++ b/test/language/subclassing/TypedArray/super-must-be-called.js
@@ -0,0 +1,45 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+es6id: 22.2.4
+description: Super need to be called to initialize internals
+info: >
+ 22.2.4 The TypedArray Constructors
+
+ ...
+
+ The TypedArray constructors are designed to be subclassable. They may be used
+ as the value of an extends clause of a class definition. Subclass constructors
+ that intend to inherit the specified TypedArray behaviour must include a super
+ call to the TypedArray constructor to create and initialize the subclass
+ instance with the internal state necessary to support the
+ %TypedArray%.prototype built-in methods.
+---*/
+
+[
+ Int8Array,
+ Uint8Array,
+ Uint8ClampedArray,
+ Int16Array,
+ Uint16Array,
+ Int32Array,
+ Uint32Array,
+ Float32Array,
+ Float64Array
+].forEach(function(Constructor) {
+ class Typed extends Constructor {
+ constructor() {}
+ }
+
+ assert.throws(ReferenceError, function() {
+ new Typed();
+ });
+
+ class TypedWithSuper extends Constructor {
+ constructor() {
+ super();
+ }
+ }
+
+ new TypedWithSuper();
+});
--
GitLab