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147 lines
4.0 KiB
147 lines
4.0 KiB
// Copyright Joyent, Inc. and other Node contributors.
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//
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// Permission is hereby granted, free of charge, to any person obtaining a
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// copy of this software and associated documentation files (the
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// "Software"), to deal in the Software without restriction, including
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// without limitation the rights to use, copy, modify, merge, publish,
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// distribute, sublicense, and/or sell copies of the Software, and to permit
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// persons to whom the Software is furnished to do so, subject to the
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// following conditions:
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//
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// The above copyright notice and this permission notice shall be included
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// in all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
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// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
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// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
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// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
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// USE OR OTHER DEALINGS IN THE SOFTWARE.
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/*
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* A battery of tests to help us read a series of uints
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*/
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var common = require('../common');
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var ASSERT = require('assert');
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/*
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* We need to check the following things:
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* - We are correctly resolving big endian (doesn't mean anything for 8 bit)
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* - Correctly resolving little endian (doesn't mean anything for 8 bit)
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* - Correctly using the offsets
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* - Correctly interpreting values that are beyond the signed range as unsigned
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*/
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function test8(clazz) {
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var data = new clazz(4);
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data.writeUInt8(23, 0);
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data.writeUInt8(23, 1);
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data.writeUInt8(23, 2);
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data.writeUInt8(23, 3);
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ASSERT.equal(23, data[0]);
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ASSERT.equal(23, data[1]);
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ASSERT.equal(23, data[2]);
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ASSERT.equal(23, data[3]);
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data.writeUInt8(23, 0);
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data.writeUInt8(23, 1);
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data.writeUInt8(23, 2);
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data.writeUInt8(23, 3);
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ASSERT.equal(23, data[0]);
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ASSERT.equal(23, data[1]);
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ASSERT.equal(23, data[2]);
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ASSERT.equal(23, data[3]);
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data.writeUInt8(255, 0);
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ASSERT.equal(255, data[0]);
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data.writeUInt8(255, 0);
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ASSERT.equal(255, data[0]);
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}
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function test16(clazz) {
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var value = 0x2343;
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var data = new clazz(4);
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data.writeUInt16BE(value, 0);
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ASSERT.equal(0x23, data[0]);
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ASSERT.equal(0x43, data[1]);
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data.writeUInt16BE(value, 1);
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ASSERT.equal(0x23, data[1]);
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ASSERT.equal(0x43, data[2]);
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data.writeUInt16BE(value, 2);
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ASSERT.equal(0x23, data[2]);
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ASSERT.equal(0x43, data[3]);
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data.writeUInt16LE(value, 0);
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ASSERT.equal(0x23, data[1]);
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ASSERT.equal(0x43, data[0]);
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data.writeUInt16LE(value, 1);
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ASSERT.equal(0x23, data[2]);
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ASSERT.equal(0x43, data[1]);
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data.writeUInt16LE(value, 2);
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ASSERT.equal(0x23, data[3]);
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ASSERT.equal(0x43, data[2]);
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value = 0xff80;
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data.writeUInt16LE(value, 0);
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ASSERT.equal(0xff, data[1]);
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ASSERT.equal(0x80, data[0]);
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data.writeUInt16BE(value, 0);
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ASSERT.equal(0xff, data[0]);
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ASSERT.equal(0x80, data[1]);
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}
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function test32(clazz) {
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var data = new clazz(6);
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var value = 0xe7f90a6d;
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data.writeUInt32BE(value, 0);
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ASSERT.equal(0xe7, data[0]);
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ASSERT.equal(0xf9, data[1]);
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ASSERT.equal(0x0a, data[2]);
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ASSERT.equal(0x6d, data[3]);
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data.writeUInt32BE(value, 1);
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ASSERT.equal(0xe7, data[1]);
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ASSERT.equal(0xf9, data[2]);
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ASSERT.equal(0x0a, data[3]);
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ASSERT.equal(0x6d, data[4]);
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data.writeUInt32BE(value, 2);
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ASSERT.equal(0xe7, data[2]);
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ASSERT.equal(0xf9, data[3]);
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ASSERT.equal(0x0a, data[4]);
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ASSERT.equal(0x6d, data[5]);
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data.writeUInt32LE(value, 0);
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ASSERT.equal(0xe7, data[3]);
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ASSERT.equal(0xf9, data[2]);
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ASSERT.equal(0x0a, data[1]);
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ASSERT.equal(0x6d, data[0]);
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data.writeUInt32LE(value, 1);
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ASSERT.equal(0xe7, data[4]);
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ASSERT.equal(0xf9, data[3]);
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ASSERT.equal(0x0a, data[2]);
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ASSERT.equal(0x6d, data[1]);
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data.writeUInt32LE(value, 2);
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ASSERT.equal(0xe7, data[5]);
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ASSERT.equal(0xf9, data[4]);
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ASSERT.equal(0x0a, data[3]);
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ASSERT.equal(0x6d, data[2]);
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}
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test8(Buffer);
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test16(Buffer);
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test32(Buffer);
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