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/*
* A battery of tests to help us read a series of uints
*/
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.writeUInt8(23, 0);
data.writeUInt8(23, 1);
data.writeUInt8(23, 2);
data.writeUInt8(23, 3);
ASSERT.equal(23, data[0]);
ASSERT.equal(23, data[1]);
ASSERT.equal(23, data[2]);
ASSERT.equal(23, data[3]);
data.writeUInt8(23, 0);
data.writeUInt8(23, 1);
data.writeUInt8(23, 2);
data.writeUInt8(23, 3);
ASSERT.equal(23, data[0]);
ASSERT.equal(23, data[1]);
ASSERT.equal(23, data[2]);
ASSERT.equal(23, data[3]);
data.writeUInt8(255, 0);
ASSERT.equal(255, data[0]);
data.writeUInt8(255, 0);
ASSERT.equal(255, data[0]);
}
function test16(clazz) {
var value = 0x2343;
var data = new clazz(4);
data.writeUInt16BE(value, 0);
ASSERT.equal(0x23, data[0]);
ASSERT.equal(0x43, data[1]);
data.writeUInt16BE(value, 1);
ASSERT.equal(0x23, data[1]);
ASSERT.equal(0x43, data[2]);
data.writeUInt16BE(value, 2);
ASSERT.equal(0x23, data[2]);
ASSERT.equal(0x43, data[3]);
data.writeUInt16LE(value, 0);
ASSERT.equal(0x23, data[1]);
ASSERT.equal(0x43, data[0]);
data.writeUInt16LE(value, 1);
ASSERT.equal(0x23, data[2]);
ASSERT.equal(0x43, data[1]);
data.writeUInt16LE(value, 2);
ASSERT.equal(0x23, data[3]);
ASSERT.equal(0x43, data[2]);
value = 0xff80;
data.writeUInt16LE(value, 0);
ASSERT.equal(0xff, data[1]);
ASSERT.equal(0x80, data[0]);
data.writeUInt16BE(value, 0);
ASSERT.equal(0xff, data[0]);
ASSERT.equal(0x80, data[1]);
}
function test32(clazz) {
var data = new clazz(6);
var value = 0xe7f90a6d;
data.writeUInt32BE(value, 0);
ASSERT.equal(0xe7, data[0]);
ASSERT.equal(0xf9, data[1]);
ASSERT.equal(0x0a, data[2]);
ASSERT.equal(0x6d, data[3]);
data.writeUInt32BE(value, 1);
ASSERT.equal(0xe7, data[1]);
ASSERT.equal(0xf9, data[2]);
ASSERT.equal(0x0a, data[3]);
ASSERT.equal(0x6d, data[4]);
data.writeUInt32BE(value, 2);
ASSERT.equal(0xe7, data[2]);
ASSERT.equal(0xf9, data[3]);
ASSERT.equal(0x0a, data[4]);
ASSERT.equal(0x6d, data[5]);
data.writeUInt32LE(value, 0);
ASSERT.equal(0xe7, data[3]);
ASSERT.equal(0xf9, data[2]);
ASSERT.equal(0x0a, data[1]);
ASSERT.equal(0x6d, data[0]);
data.writeUInt32LE(value, 1);
ASSERT.equal(0xe7, data[4]);
ASSERT.equal(0xf9, data[3]);
ASSERT.equal(0x0a, data[2]);
ASSERT.equal(0x6d, data[1]);
data.writeUInt32LE(value, 2);
ASSERT.equal(0xe7, data[5]);
ASSERT.equal(0xf9, data[4]);
ASSERT.equal(0x0a, data[3]);
ASSERT.equal(0x6d, data[2]);
}
test8(Buffer);
test16(Buffer);
test32(Buffer);
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