mirror of
https://github.com/nodejs/node.git
synced 2024-12-01 16:10:02 +01:00
114 lines
3.6 KiB
JavaScript
114 lines
3.6 KiB
JavaScript
// 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.
|
|
|
|
/*
|
|
* A battery of tests to help us read a series of uints
|
|
*/
|
|
|
|
var SlowBuffer = process.binding('buffer').SlowBuffer;
|
|
var common = require('../common');
|
|
var ASSERT = require('assert');
|
|
|
|
/*
|
|
* We need to check the following things:
|
|
* - We are correctly resolving big endian (doesn't mean anything for 8 bit)
|
|
* - Correctly resolving little endian (doesn't mean anything for 8 bit)
|
|
* - Correctly using the offsets
|
|
* - Correctly interpreting values that are beyond the signed range as unsigned
|
|
*/
|
|
function test8(clazz) {
|
|
var data = new clazz(4);
|
|
|
|
data[0] = 23;
|
|
data[1] = 23;
|
|
data[2] = 23;
|
|
data[3] = 23;
|
|
ASSERT.equal(23, data.readUInt8(0));
|
|
ASSERT.equal(23, data.readUInt8(1));
|
|
ASSERT.equal(23, data.readUInt8(2));
|
|
ASSERT.equal(23, data.readUInt8(3));
|
|
|
|
data[0] = 255; /* If it became a signed int, would be -1 */
|
|
ASSERT.equal(255, data.readUInt8(0));
|
|
}
|
|
|
|
|
|
/*
|
|
* Test 16 bit unsigned integers. We need to verify the same set as 8 bit, only
|
|
* now some of the issues actually matter:
|
|
* - We are correctly resolving big endian
|
|
* - Correctly resolving little endian
|
|
* - Correctly using the offsets
|
|
* - Correctly interpreting values that are beyond the signed range as unsigned
|
|
*/
|
|
function test16(clazz) {
|
|
var data = new clazz(4);
|
|
|
|
data[0] = 0;
|
|
data[1] = 0x23;
|
|
data[2] = 0x42;
|
|
data[3] = 0x3f;
|
|
ASSERT.equal(0x23, data.readUInt16BE(0));
|
|
ASSERT.equal(0x2342, data.readUInt16BE(1));
|
|
ASSERT.equal(0x423f, data.readUInt16BE(2));
|
|
ASSERT.equal(0x2300, data.readUInt16LE(0));
|
|
ASSERT.equal(0x4223, data.readUInt16LE(1));
|
|
ASSERT.equal(0x3f42, data.readUInt16LE(2));
|
|
|
|
data[0] = 0xfe;
|
|
data[1] = 0xfe;
|
|
ASSERT.equal(0xfefe, data.readUInt16BE(0));
|
|
ASSERT.equal(0xfefe, data.readUInt16LE(0));
|
|
}
|
|
|
|
|
|
/*
|
|
* Test 32 bit unsigned integers. We need to verify the same set as 8 bit, only
|
|
* now some of the issues actually matter:
|
|
* - We are correctly resolving big endian
|
|
* - Correctly using the offsets
|
|
* - Correctly interpreting values that are beyond the signed range as unsigned
|
|
*/
|
|
function test32(clazz) {
|
|
var data = new clazz(8);
|
|
|
|
data[0] = 0x32;
|
|
data[1] = 0x65;
|
|
data[2] = 0x42;
|
|
data[3] = 0x56;
|
|
data[4] = 0x23;
|
|
data[5] = 0xff;
|
|
ASSERT.equal(0x32654256, data.readUInt32BE(0));
|
|
ASSERT.equal(0x65425623, data.readUInt32BE(1));
|
|
ASSERT.equal(0x425623ff, data.readUInt32BE(2));
|
|
ASSERT.equal(0x56426532, data.readUInt32LE(0));
|
|
ASSERT.equal(0x23564265, data.readUInt32LE(1));
|
|
ASSERT.equal(0xff235642, data.readUInt32LE(2));
|
|
}
|
|
|
|
|
|
test8(Buffer);
|
|
test8(SlowBuffer);
|
|
test16(Buffer);
|
|
test16(SlowBuffer);
|
|
test32(Buffer);
|
|
test32(SlowBuffer);
|