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'use strict';
/*
* Tests to verify we're reading in signed integers correctly
*/
require('../common');
const assert = require('assert');
/*
* Test 8 bit signed integers
*/
function test8(clazz) {
const data = new clazz(4);
data[0] = 0x23;
assert.equal(0x23, data.readInt8(0));
data[0] = 0xff;
assert.equal(-1, data.readInt8(0));
data[0] = 0x87;
data[1] = 0xab;
data[2] = 0x7c;
data[3] = 0xef;
assert.equal(-121, data.readInt8(0));
assert.equal(-85, data.readInt8(1));
assert.equal(124, data.readInt8(2));
assert.equal(-17, data.readInt8(3));
}
function test16(clazz) {
const buffer = new clazz(6);
buffer[0] = 0x16;
buffer[1] = 0x79;
assert.equal(0x1679, buffer.readInt16BE(0));
assert.equal(0x7916, buffer.readInt16LE(0));
buffer[0] = 0xff;
buffer[1] = 0x80;
assert.equal(-128, buffer.readInt16BE(0));
assert.equal(-32513, buffer.readInt16LE(0));
/* test offset with weenix */
buffer[0] = 0x77;
buffer[1] = 0x65;
buffer[2] = 0x65;
buffer[3] = 0x6e;
buffer[4] = 0x69;
buffer[5] = 0x78;
assert.equal(0x7765, buffer.readInt16BE(0));
assert.equal(0x6565, buffer.readInt16BE(1));
assert.equal(0x656e, buffer.readInt16BE(2));
assert.equal(0x6e69, buffer.readInt16BE(3));
assert.equal(0x6978, buffer.readInt16BE(4));
assert.equal(0x6577, buffer.readInt16LE(0));
assert.equal(0x6565, buffer.readInt16LE(1));
assert.equal(0x6e65, buffer.readInt16LE(2));
assert.equal(0x696e, buffer.readInt16LE(3));
assert.equal(0x7869, buffer.readInt16LE(4));
}
function test32(clazz) {
const buffer = new clazz(6);
buffer[0] = 0x43;
buffer[1] = 0x53;
buffer[2] = 0x16;
buffer[3] = 0x79;
assert.equal(0x43531679, buffer.readInt32BE(0));
assert.equal(0x79165343, buffer.readInt32LE(0));
buffer[0] = 0xff;
buffer[1] = 0xfe;
buffer[2] = 0xef;
buffer[3] = 0xfa;
assert.equal(-69638, buffer.readInt32BE(0));
assert.equal(-84934913, buffer.readInt32LE(0));
buffer[0] = 0x42;
buffer[1] = 0xc3;
buffer[2] = 0x95;
buffer[3] = 0xa9;
buffer[4] = 0x36;
buffer[5] = 0x17;
assert.equal(0x42c395a9, buffer.readInt32BE(0));
assert.equal(-1013601994, buffer.readInt32BE(1));
assert.equal(-1784072681, buffer.readInt32BE(2));
assert.equal(-1449802942, buffer.readInt32LE(0));
assert.equal(917083587, buffer.readInt32LE(1));
assert.equal(389458325, buffer.readInt32LE(2));
}
test8(Buffer);
test16(Buffer);
test32(Buffer);
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