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