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denoland-deno/tests/node_compat/test/parallel/test-buffer-writeint.js

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// deno-fmt-ignore-file
// deno-lint-ignore-file
// Copyright Joyent and Node contributors. All rights reserved. MIT license.
// Taken from Node 20.11.1
// This file is automatically generated by `tests/node_compat/runner/setup.ts`. Do not modify this file manually.
'use strict';
// Tests to verify signed integers are correctly written
require('../common');
const assert = require('assert');
const errorOutOfBounds = {
code: 'ERR_OUT_OF_RANGE',
name: 'RangeError',
message: new RegExp('^The value of "value" is out of range\\. ' +
'It must be >= -\\d+ and <= \\d+\\. Received .+$')
};
// Test 8 bit
{
const buffer = Buffer.alloc(2);
buffer.writeInt8(0x23, 0);
buffer.writeInt8(-5, 1);
assert.ok(buffer.equals(new Uint8Array([ 0x23, 0xfb ])));
/* Make sure we handle min/max correctly */
buffer.writeInt8(0x7f, 0);
buffer.writeInt8(-0x80, 1);
assert.ok(buffer.equals(new Uint8Array([ 0x7f, 0x80 ])));
assert.throws(() => {
buffer.writeInt8(0x7f + 1, 0);
}, errorOutOfBounds);
assert.throws(() => {
buffer.writeInt8(-0x80 - 1, 0);
}, errorOutOfBounds);
// Verify that default offset works fine.
buffer.writeInt8(23, undefined);
buffer.writeInt8(23);
['', '0', null, {}, [], () => {}, true, false].forEach((off) => {
assert.throws(
() => buffer.writeInt8(23, off),
{ code: 'ERR_INVALID_ARG_TYPE' });
});
[NaN, Infinity, -1, 1.01].forEach((off) => {
assert.throws(
() => buffer.writeInt8(23, off),
{ code: 'ERR_OUT_OF_RANGE' });
});
}
// Test 16 bit
{
const buffer = Buffer.alloc(4);
buffer.writeInt16BE(0x0023, 0);
buffer.writeInt16LE(0x0023, 2);
assert.ok(buffer.equals(new Uint8Array([ 0x00, 0x23, 0x23, 0x00 ])));
buffer.writeInt16BE(-5, 0);
buffer.writeInt16LE(-5, 2);
assert.ok(buffer.equals(new Uint8Array([ 0xff, 0xfb, 0xfb, 0xff ])));
buffer.writeInt16BE(-1679, 0);
buffer.writeInt16LE(-1679, 2);
assert.ok(buffer.equals(new Uint8Array([ 0xf9, 0x71, 0x71, 0xf9 ])));
/* Make sure we handle min/max correctly */
buffer.writeInt16BE(0x7fff, 0);
buffer.writeInt16BE(-0x8000, 2);
assert.ok(buffer.equals(new Uint8Array([ 0x7f, 0xff, 0x80, 0x00 ])));
buffer.writeInt16LE(0x7fff, 0);
buffer.writeInt16LE(-0x8000, 2);
assert.ok(buffer.equals(new Uint8Array([ 0xff, 0x7f, 0x00, 0x80 ])));
['writeInt16BE', 'writeInt16LE'].forEach((fn) => {
// Verify that default offset works fine.
buffer[fn](23, undefined);
buffer[fn](23);
assert.throws(() => {
buffer[fn](0x7fff + 1, 0);
}, errorOutOfBounds);
assert.throws(() => {
buffer[fn](-0x8000 - 1, 0);
}, errorOutOfBounds);
['', '0', null, {}, [], () => {}, true, false].forEach((off) => {
assert.throws(
() => buffer[fn](23, off),
{ code: 'ERR_INVALID_ARG_TYPE' });
});
[NaN, Infinity, -1, 1.01].forEach((off) => {
assert.throws(
() => buffer[fn](23, off),
{ code: 'ERR_OUT_OF_RANGE' });
});
});
}
// Test 32 bit
{
const buffer = Buffer.alloc(8);
buffer.writeInt32BE(0x23, 0);
buffer.writeInt32LE(0x23, 4);
assert.ok(buffer.equals(new Uint8Array([
0x00, 0x00, 0x00, 0x23, 0x23, 0x00, 0x00, 0x00,
])));
buffer.writeInt32BE(-5, 0);
buffer.writeInt32LE(-5, 4);
assert.ok(buffer.equals(new Uint8Array([
0xff, 0xff, 0xff, 0xfb, 0xfb, 0xff, 0xff, 0xff,
])));
buffer.writeInt32BE(-805306713, 0);
buffer.writeInt32LE(-805306713, 4);
assert.ok(buffer.equals(new Uint8Array([
0xcf, 0xff, 0xfe, 0xa7, 0xa7, 0xfe, 0xff, 0xcf,
])));
/* Make sure we handle min/max correctly */
buffer.writeInt32BE(0x7fffffff, 0);
buffer.writeInt32BE(-0x80000000, 4);
assert.ok(buffer.equals(new Uint8Array([
0x7f, 0xff, 0xff, 0xff, 0x80, 0x00, 0x00, 0x00,
])));
buffer.writeInt32LE(0x7fffffff, 0);
buffer.writeInt32LE(-0x80000000, 4);
assert.ok(buffer.equals(new Uint8Array([
0xff, 0xff, 0xff, 0x7f, 0x00, 0x00, 0x00, 0x80,
])));
['writeInt32BE', 'writeInt32LE'].forEach((fn) => {
// Verify that default offset works fine.
buffer[fn](23, undefined);
buffer[fn](23);
assert.throws(() => {
buffer[fn](0x7fffffff + 1, 0);
}, errorOutOfBounds);
assert.throws(() => {
buffer[fn](-0x80000000 - 1, 0);
}, errorOutOfBounds);
['', '0', null, {}, [], () => {}, true, false].forEach((off) => {
assert.throws(
() => buffer[fn](23, off),
{ code: 'ERR_INVALID_ARG_TYPE' });
});
[NaN, Infinity, -1, 1.01].forEach((off) => {
assert.throws(
() => buffer[fn](23, off),
{ code: 'ERR_OUT_OF_RANGE' });
});
});
}
// Test 48 bit
{
const value = 0x1234567890ab;
const buffer = Buffer.allocUnsafe(6);
buffer.writeIntBE(value, 0, 6);
assert.ok(buffer.equals(new Uint8Array([
0x12, 0x34, 0x56, 0x78, 0x90, 0xab,
])));
buffer.writeIntLE(value, 0, 6);
assert.ok(buffer.equals(new Uint8Array([
0xab, 0x90, 0x78, 0x56, 0x34, 0x12,
])));
}
// Test Int
{
const data = Buffer.alloc(8);
// Check byteLength.
['writeIntBE', 'writeIntLE'].forEach((fn) => {
['', '0', null, {}, [], () => {}, true, false, undefined].forEach((bl) => {
assert.throws(
() => data[fn](23, 0, bl),
{ code: 'ERR_INVALID_ARG_TYPE' });
});
[Infinity, -1].forEach((byteLength) => {
assert.throws(
() => data[fn](23, 0, byteLength),
{
code: 'ERR_OUT_OF_RANGE',
message: 'The value of "byteLength" is out of range. ' +
`It must be >= 1 and <= 6. Received ${byteLength}`
}
);
});
[NaN, 1.01].forEach((byteLength) => {
assert.throws(
() => data[fn](42, 0, byteLength),
{
code: 'ERR_OUT_OF_RANGE',
name: 'RangeError',
message: 'The value of "byteLength" is out of range. ' +
`It must be an integer. Received ${byteLength}`
});
});
});
// Test 1 to 6 bytes.
for (let i = 1; i <= 6; i++) {
['writeIntBE', 'writeIntLE'].forEach((fn) => {
const min = -(2 ** (i * 8 - 1));
const max = 2 ** (i * 8 - 1) - 1;
let range = `>= ${min} and <= ${max}`;
if (i > 4) {
range = `>= -(2 ** ${i * 8 - 1}) and < 2 ** ${i * 8 - 1}`;
}
[min - 1, max + 1].forEach((val) => {
const received = i > 4 ?
String(val).replace(/(\d)(?=(\d\d\d)+(?!\d))/g, '$1_') :
val;
assert.throws(() => {
data[fn](val, 0, i);
}, {
code: 'ERR_OUT_OF_RANGE',
name: 'RangeError',
message: 'The value of "value" is out of range. ' +
`It must be ${range}. Received ${received}`
});
});
['', '0', null, {}, [], () => {}, true, false, undefined].forEach((o) => {
assert.throws(
() => data[fn](min, o, i),
{
code: 'ERR_INVALID_ARG_TYPE',
name: 'TypeError'
});
});
[Infinity, -1, -4294967295].forEach((offset) => {
assert.throws(
() => data[fn](min, offset, i),
{
code: 'ERR_OUT_OF_RANGE',
name: 'RangeError',
message: 'The value of "offset" is out of range. ' +
`It must be >= 0 and <= ${8 - i}. Received ${offset}`
});
});
[NaN, 1.01].forEach((offset) => {
assert.throws(
() => data[fn](max, offset, i),
{
code: 'ERR_OUT_OF_RANGE',
name: 'RangeError',
message: 'The value of "offset" is out of range. ' +
`It must be an integer. Received ${offset}`
});
});
});
}
}