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'use strict';
require('../common');
const assert = require('assert');
const Buffer = require('buffer').Buffer;
const LENGTH = 16;
const ab = new ArrayBuffer(LENGTH);
const dv = new DataView(ab);
const ui = new Uint8Array(ab);
const buf = new Buffer(ab);
assert.ok(buf instanceof Buffer);
// For backwards compatibility of old .parent property test that if buf is not
// a slice then .parent should be undefined.
assert.equal(buf.parent, undefined);
assert.equal(buf.buffer, ab);
assert.equal(buf.length, ab.byteLength);
buf.fill(0xC);
for (let i = 0; i < LENGTH; i++) {
assert.equal(ui[i], 0xC);
ui[i] = 0xF;
assert.equal(buf[i], 0xF);
}
buf.writeUInt32LE(0xF00, 0);
buf.writeUInt32BE(0xB47, 4);
buf.writeDoubleLE(3.1415, 8);
assert.equal(dv.getUint32(0, true), 0xF00);
assert.equal(dv.getUint32(4), 0xB47);
assert.equal(dv.getFloat64(8, true), 3.1415);
// Now test protecting users from doing stupid things
assert.throws(function() {
function AB() { }
Object.setPrototypeOf(AB, ArrayBuffer);
Object.setPrototypeOf(AB.prototype, ArrayBuffer.prototype);
new Buffer(new AB());
}, TypeError);
// write{Double,Float}{LE,BE} with noAssert should not crash, cf. #3766
var b = new Buffer(1);
b.writeFloatLE(11.11, 0, true);
b.writeFloatBE(11.11, 0, true);
b.writeDoubleLE(11.11, 0, true);
b.writeDoubleBE(11.11, 0, true);
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