From 021d44822c295dae412364d8db125b78dfe0545a Mon Sep 17 00:00:00 2001
From: Leonardo Balter <leonardo.balter@gmail.com>
Date: Tue, 28 Jun 2016 18:05:12 -0300
Subject: [PATCH] Add tests for custom ctor returns on TypedArrays from and of
---
.../custom-ctor-returns-other-instance.js | 51 +++++++++++++++++++
...om-ctor-returns-smaller-instance-throws.js | 41 +++++++++++++++
.../of/custom-ctor-returns-other-instance.js | 32 ++++++++++++
...om-ctor-returns-smaller-instance-throws.js | 27 ++++++++++
4 files changed, 151 insertions(+)
create mode 100644 test/built-ins/TypedArrays/from/custom-ctor-returns-other-instance.js
create mode 100644 test/built-ins/TypedArrays/from/custom-ctor-returns-smaller-instance-throws.js
create mode 100644 test/built-ins/TypedArrays/of/custom-ctor-returns-other-instance.js
create mode 100644 test/built-ins/TypedArrays/of/custom-ctor-returns-smaller-instance-throws.js
diff --git a/test/built-ins/TypedArrays/from/custom-ctor-returns-other-instance.js b/test/built-ins/TypedArrays/from/custom-ctor-returns-other-instance.js
new file mode 100644
index 0000000000..d5a631ad57
--- /dev/null
+++ b/test/built-ins/TypedArrays/from/custom-ctor-returns-other-instance.js
@@ -0,0 +1,51 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+es6id: 22.2.2.1
+esid: sec-%typedarray%.from
+description: >
+ Custom constructor can return any TypedArray instance with higher or same
+ length
+info: |
+ %TypedArray%.from ( source [ , mapfn [ , thisArg ] ] )
+
+ ...
+ 7. If usingIterator is not undefined, then
+ a. Let values be ? IterableToList(source, usingIterator).
+ b. Let len be the number of elements in values.
+ c. Let targetObj be ? TypedArrayCreate(C, «len»).
+ ...
+ 10. Let len be ? ToLength(? Get(arrayLike, "length")).
+ 11. Let targetObj be ? TypedArrayCreate(C, « len »).
+ ...
+includes: [testTypedArray.js]
+features: [Symbol.iterator]
+---*/
+
+var sourceItor = [1, 2];
+var sourceObj = {
+ length: 2
+};
+
+testWithTypedArrayConstructors(function(TA) {
+ var result;
+ var custom = new TA(2);
+ var ctor = function() {
+ return custom;
+ };
+
+ result = TypedArray.from.call(ctor, sourceItor);
+ assert.sameValue(result, custom, "using iterator, same length");
+
+ result = TypedArray.from.call(ctor, sourceObj);
+ assert.sameValue(result, custom, "not using iterator, same length");
+
+ custom = new TA(3);
+
+ result = TypedArray.from.call(ctor, sourceItor);
+ assert.sameValue(result, custom, "using iterator, higher length");
+
+ result = TypedArray.from.call(ctor, sourceObj);
+ assert.sameValue(result, custom, "not using iterator, higher length");
+});
diff --git a/test/built-ins/TypedArrays/from/custom-ctor-returns-smaller-instance-throws.js b/test/built-ins/TypedArrays/from/custom-ctor-returns-smaller-instance-throws.js
new file mode 100644
index 0000000000..00fb7bcf60
--- /dev/null
+++ b/test/built-ins/TypedArrays/from/custom-ctor-returns-smaller-instance-throws.js
@@ -0,0 +1,41 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+es6id: 22.2.2.1
+esid: sec-%typedarray%.from
+description: >
+ Throws a TypeError if a custom `this` returns a smaller instance
+info: |
+ %TypedArray%.from ( source [ , mapfn [ , thisArg ] ] )
+
+ ...
+ 7. If usingIterator is not undefined, then
+ a. Let values be ? IterableToList(source, usingIterator).
+ b. Let len be the number of elements in values.
+ c. Let targetObj be ? TypedArrayCreate(C, «len»).
+ ...
+ 10. Let len be ? ToLength(? Get(arrayLike, "length")).
+ 11. Let targetObj be ? TypedArrayCreate(C, « len »).
+ ...
+includes: [testTypedArray.js]
+features: [Symbol.iterator]
+---*/
+
+var sourceItor = [1, 2];
+var sourceObj = {
+ length: 2
+};
+
+testWithTypedArrayConstructors(function(TA) {
+ var ctor = function() {
+ return new TA(1);
+ };
+ assert.throws(TypeError, function() {
+ TA.from.call(ctor, sourceItor);
+ }, "source is using iterator");
+
+ assert.throws(TypeError, function() {
+ TA.from.call(ctor, sourceObj);
+ }, "source is not using iterator");
+});
diff --git a/test/built-ins/TypedArrays/of/custom-ctor-returns-other-instance.js b/test/built-ins/TypedArrays/of/custom-ctor-returns-other-instance.js
new file mode 100644
index 0000000000..5e7ee9b6e8
--- /dev/null
+++ b/test/built-ins/TypedArrays/of/custom-ctor-returns-other-instance.js
@@ -0,0 +1,32 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+es6id: 22.2.2.2
+esid: sec-%typedarray%.of
+description: >
+ Custom constructor can return any TypedArray instance with higher or same
+ length
+info: |
+ %TypedArray%.of ( ...items )
+
+ 1. Let len be the actual number of arguments passed to this function.
+ ...
+ 5. Let newObj be ? TypedArrayCreate(C, « len »).
+ ...
+includes: [testTypedArray.js]
+---*/
+
+testWithTypedArrayConstructors(function(TA) {
+ var result;
+ var custom = new TA(3);
+ var ctor = function() {
+ return custom;
+ };
+
+ result = TypedArray.of.call(ctor, 1, 2, 3);
+ assert.sameValue(result, custom, "using iterator, same length");
+
+ result = TypedArray.of.call(ctor, 1, 2);
+ assert.sameValue(result, custom, "using iterator, higher length");
+});
diff --git a/test/built-ins/TypedArrays/of/custom-ctor-returns-smaller-instance-throws.js b/test/built-ins/TypedArrays/of/custom-ctor-returns-smaller-instance-throws.js
new file mode 100644
index 0000000000..9cbe756375
--- /dev/null
+++ b/test/built-ins/TypedArrays/of/custom-ctor-returns-smaller-instance-throws.js
@@ -0,0 +1,27 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+es6id: 22.2.2.2
+esid: sec-%typedarray%.of
+description: >
+ Throws a TypeError if a custom `this` returns a smaller instance
+info: |
+ %TypedArray%.of ( ...items )
+
+ 1. Let len be the actual number of arguments passed to this function.
+ ...
+ 5. Let newObj be ? TypedArrayCreate(C, « len »).
+ ...
+includes: [testTypedArray.js]
+---*/
+
+testWithTypedArrayConstructors(function(TA) {
+ var ctor = function() {
+ return new TA(1);
+ };
+
+ assert.throws(TypeError, function() {
+ TypedArray.of.call(ctor, 1, 2);
+ });
+});
--
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