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// Copyright Joyent, Inc. and other Node contributors.
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.
/*
* Test to verify we are using Typed Arrays
* (http://www.khronos.org/registry/typedarray/specs/latest/) correctly Test to
* verify Buffer can used in Typed Arrays
*/
var assert = require('assert');
var SlowBuffer = process.binding('buffer').SlowBuffer;
var ArrayBuffer = process.binding('typed_array').ArrayBuffer;
var Int32Array = process.binding('typed_array').Int32Array;
var Int16Array = process.binding('typed_array').Int16Array;
var Uint8Array = process.binding('typed_array').Uint8Array;
function test(clazz) {
var size = clazz.length;
var b = clazz;
// create a view v1 referring to b, of type Int32, starting at
// the default byte index (0) and extending until the end of the buffer
var v1 = new Int32Array(b);
assert(4, v1.BYTES_PER_ELEMENT);
// create a view v2 referring to b, of type Uint8, starting at
// byte index 2 and extending until the end of the buffer
var v2 = new Uint8Array(b, 2);
assert(1, v1.BYTES_PER_ELEMENT);
// create a view v3 referring to b, of type Int16, starting at
// byte index 2 and having a length of 2
var v3 = new Int16Array(b, 2, 2);
assert(2, v1.BYTES_PER_ELEMENT);
// The layout is now
// var index
// b = |0|1|2|3|4|5|6|7| bytes (not indexable)
// v1 = |0 |1 | indices (indexable)
// v2 = |0|1|2|3|4|5|
// v3 = |0 |1 |
// testing values
v1[0] = 0x1234;
v1[1] = 0x5678;
assert(0x1234, v1[0]);
assert(0x5678, v1[1]);
assert(0x3, v2[0]);
assert(0x4, v2[1]);
assert(0x5, v2[2]);
assert(0x6, v2[3]);
assert(0x7, v2[4]);
assert(0x8, v2[5]);
assert(0x34, v3[0]);
assert(0x56, v3[1]);
// test get/set
v2.set(1, 0x8);
v2.set(2, 0xF);
assert(0x8, v2.get(1));
assert(0xF, v2.get(2));
assert(0x38, v3.get(0));
assert(0xF6, v3.get(1));
// test subarray
var v4 = v1.subarray(1);
assert(Int32Array, typeof v4);
assert(0xF678, v4[0]);
// test set with typed array and []
v2.set([ 1, 2, 3, 4 ], 2);
assert(0x1234, v1[0]);
var sub = new Int32Array(4);
sub[0] = 0xabcd;
v2.set(sub, 1);
assert(0x3a, v3[0]);
assert(0xbc, v3[1]);
}
// basic Typed Arrays tests
var size = 8;
var ab = new ArrayBuffer(size);
assert.equal(size, ab.byteLength);
test(ab);
// testing sharing Buffer object
var buffer = new Buffer(size);
test(buffer);
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