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-rw-r--r--test/parallel/test-buffer-alloc.js1442
1 files changed, 1442 insertions, 0 deletions
diff --git a/test/parallel/test-buffer-alloc.js b/test/parallel/test-buffer-alloc.js
new file mode 100644
index 0000000000..b88b12f7f6
--- /dev/null
+++ b/test/parallel/test-buffer-alloc.js
@@ -0,0 +1,1442 @@
+'use strict';
+var common = require('../common');
+var assert = require('assert');
+
+var Buffer = require('buffer').Buffer;
+var SlowBuffer = require('buffer').SlowBuffer;
+
+// counter to ensure unique value is always copied
+var cntr = 0;
+
+var b = Buffer.allocUnsafe(1024);
+
+console.log('b.length == %d', b.length);
+assert.strictEqual(1024, b.length);
+
+b[0] = -1;
+assert.strictEqual(b[0], 255);
+
+for (let i = 0; i < 1024; i++) {
+ b[i] = i % 256;
+}
+
+for (let i = 0; i < 1024; i++) {
+ assert.strictEqual(i % 256, b[i]);
+}
+
+var c = Buffer.allocUnsafe(512);
+console.log('c.length == %d', c.length);
+assert.strictEqual(512, c.length);
+
+var d = Buffer.from([]);
+assert.strictEqual(0, d.length);
+
+var ui32 = new Uint32Array(4).fill(42);
+var e = Buffer.from(ui32);
+assert.deepEqual(ui32, e);
+
+// First check Buffer#fill() works as expected.
+
+assert.throws(function() {
+ Buffer.allocUnsafe(8).fill('a', -1);
+});
+
+assert.throws(function() {
+ Buffer.allocUnsafe(8).fill('a', 0, 9);
+});
+
+// Make sure this doesn't hang indefinitely.
+Buffer.allocUnsafe(8).fill('');
+Buffer.alloc(8, '');
+
+{
+ const buf = Buffer.alloc(64, 10);
+ for (let i = 0; i < buf.length; i++)
+ assert.equal(buf[i], 10);
+
+ buf.fill(11, 0, buf.length >> 1);
+ for (let i = 0; i < buf.length >> 1; i++)
+ assert.equal(buf[i], 11);
+ for (let i = (buf.length >> 1) + 1; i < buf.length; i++)
+ assert.equal(buf[i], 10);
+
+ buf.fill('h');
+ for (let i = 0; i < buf.length; i++)
+ assert.equal('h'.charCodeAt(0), buf[i]);
+
+ buf.fill(0);
+ for (let i = 0; i < buf.length; i++)
+ assert.equal(0, buf[i]);
+
+ buf.fill(null);
+ for (let i = 0; i < buf.length; i++)
+ assert.equal(0, buf[i]);
+
+ buf.fill(1, 16, 32);
+ for (let i = 0; i < 16; i++)
+ assert.equal(0, buf[i]);
+ for (let i = 16; i < 32; i++)
+ assert.equal(1, buf[i]);
+ for (let i = 32; i < buf.length; i++)
+ assert.equal(0, buf[i]);
+}
+
+{
+ const buf = Buffer.alloc(10, 'abc');
+ assert.equal(buf.toString(), 'abcabcabca');
+ buf.fill('է');
+ assert.equal(buf.toString(), 'էէէէէ');
+}
+
+{
+ // copy 512 bytes, from 0 to 512.
+ b.fill(++cntr);
+ c.fill(++cntr);
+ const copied = b.copy(c, 0, 0, 512);
+ console.log('copied %d bytes from b into c', copied);
+ assert.strictEqual(512, copied);
+ for (let i = 0; i < c.length; i++) {
+ assert.strictEqual(b[i], c[i]);
+ }
+}
+
+{
+ // copy c into b, without specifying sourceEnd
+ b.fill(++cntr);
+ c.fill(++cntr);
+ const copied = c.copy(b, 0, 0);
+ console.log('copied %d bytes from c into b w/o sourceEnd', copied);
+ assert.strictEqual(c.length, copied);
+ for (let i = 0; i < c.length; i++) {
+ assert.strictEqual(c[i], b[i]);
+ }
+}
+
+{
+ // copy c into b, without specifying sourceStart
+ b.fill(++cntr);
+ c.fill(++cntr);
+ const copied = c.copy(b, 0);
+ console.log('copied %d bytes from c into b w/o sourceStart', copied);
+ assert.strictEqual(c.length, copied);
+ for (let i = 0; i < c.length; i++) {
+ assert.strictEqual(c[i], b[i]);
+ }
+}
+
+{
+ // copy longer buffer b to shorter c without targetStart
+ b.fill(++cntr);
+ c.fill(++cntr);
+ const copied = b.copy(c);
+ console.log('copied %d bytes from b into c w/o targetStart', copied);
+ assert.strictEqual(c.length, copied);
+ for (let i = 0; i < c.length; i++) {
+ assert.strictEqual(b[i], c[i]);
+ }
+}
+
+{
+ // copy starting near end of b to c
+ b.fill(++cntr);
+ c.fill(++cntr);
+ const copied = b.copy(c, 0, b.length - Math.floor(c.length / 2));
+ console.log('copied %d bytes from end of b into beginning of c', copied);
+ assert.strictEqual(Math.floor(c.length / 2), copied);
+ for (let i = 0; i < Math.floor(c.length / 2); i++) {
+ assert.strictEqual(b[b.length - Math.floor(c.length / 2) + i], c[i]);
+ }
+ for (let i = Math.floor(c.length / 2) + 1; i < c.length; i++) {
+ assert.strictEqual(c[c.length - 1], c[i]);
+ }
+}
+
+{
+ // try to copy 513 bytes, and check we don't overrun c
+ b.fill(++cntr);
+ c.fill(++cntr);
+ const copied = b.copy(c, 0, 0, 513);
+ console.log('copied %d bytes from b trying to overrun c', copied);
+ assert.strictEqual(c.length, copied);
+ for (let i = 0; i < c.length; i++) {
+ assert.strictEqual(b[i], c[i]);
+ }
+}
+
+{
+ // copy 768 bytes from b into b
+ b.fill(++cntr);
+ b.fill(++cntr, 256);
+ const copied = b.copy(b, 0, 256, 1024);
+ console.log('copied %d bytes from b into b', copied);
+ assert.strictEqual(768, copied);
+ for (let i = 0; i < b.length; i++) {
+ assert.strictEqual(cntr, b[i]);
+ }
+}
+
+// copy string longer than buffer length (failure will segfault)
+var bb = Buffer.allocUnsafe(10);
+bb.fill('hello crazy world');
+
+
+// try to copy from before the beginning of b
+assert.doesNotThrow(() => { b.copy(c, 0, 100, 10); });
+
+// copy throws at negative sourceStart
+assert.throws(function() {
+ Buffer.allocUnsafe(5).copy(Buffer.allocUnsafe(5), 0, -1);
+}, RangeError);
+
+{
+ // check sourceEnd resets to targetEnd if former is greater than the latter
+ b.fill(++cntr);
+ c.fill(++cntr);
+ const copied = b.copy(c, 0, 0, 1025);
+ console.log('copied %d bytes from b into c', copied);
+ for (let i = 0; i < c.length; i++) {
+ assert.strictEqual(b[i], c[i]);
+ }
+}
+
+// throw with negative sourceEnd
+console.log('test copy at negative sourceEnd');
+assert.throws(function() {
+ b.copy(c, 0, 0, -1);
+}, RangeError);
+
+// when sourceStart is greater than sourceEnd, zero copied
+assert.equal(b.copy(c, 0, 100, 10), 0);
+
+// when targetStart > targetLength, zero copied
+assert.equal(b.copy(c, 512, 0, 10), 0);
+
+var caught_error;
+
+// invalid encoding for Buffer.toString
+caught_error = null;
+try {
+ b.toString('invalid');
+} catch (err) {
+ caught_error = err;
+}
+assert.strictEqual('Unknown encoding: invalid', caught_error.message);
+
+// invalid encoding for Buffer.write
+caught_error = null;
+try {
+ b.write('test string', 0, 5, 'invalid');
+} catch (err) {
+ caught_error = err;
+}
+assert.strictEqual('Unknown encoding: invalid', caught_error.message);
+
+// try to create 0-length buffers
+Buffer.from('');
+Buffer.from('', 'ascii');
+Buffer.from('', 'binary');
+Buffer.alloc(0);
+Buffer.allocUnsafe(0);
+
+// try to write a 0-length string beyond the end of b
+assert.throws(function() {
+ b.write('', 2048);
+}, RangeError);
+
+// throw when writing to negative offset
+assert.throws(function() {
+ b.write('a', -1);
+}, RangeError);
+
+// throw when writing past bounds from the pool
+assert.throws(function() {
+ b.write('a', 2048);
+}, RangeError);
+
+// throw when writing to negative offset
+assert.throws(function() {
+ b.write('a', -1);
+}, RangeError);
+
+// try to copy 0 bytes worth of data into an empty buffer
+b.copy(Buffer.alloc(0), 0, 0, 0);
+
+// try to copy 0 bytes past the end of the target buffer
+b.copy(Buffer.alloc(0), 1, 1, 1);
+b.copy(Buffer.alloc(1), 1, 1, 1);
+
+// try to copy 0 bytes from past the end of the source buffer
+b.copy(Buffer.alloc(1), 0, 2048, 2048);
+
+const rangeBuffer = Buffer.from('abc');
+
+// if start >= buffer's length, empty string will be returned
+assert.equal(rangeBuffer.toString('ascii', 3), '');
+assert.equal(rangeBuffer.toString('ascii', +Infinity), '');
+assert.equal(rangeBuffer.toString('ascii', 3.14, 3), '');
+assert.equal(rangeBuffer.toString('ascii', 'Infinity', 3), '');
+
+// if end <= 0, empty string will be returned
+assert.equal(rangeBuffer.toString('ascii', 1, 0), '');
+assert.equal(rangeBuffer.toString('ascii', 1, -1.2), '');
+assert.equal(rangeBuffer.toString('ascii', 1, -100), '');
+assert.equal(rangeBuffer.toString('ascii', 1, -Infinity), '');
+
+// if start < 0, start will be taken as zero
+assert.equal(rangeBuffer.toString('ascii', -1, 3), 'abc');
+assert.equal(rangeBuffer.toString('ascii', -1.99, 3), 'abc');
+assert.equal(rangeBuffer.toString('ascii', -Infinity, 3), 'abc');
+assert.equal(rangeBuffer.toString('ascii', '-1', 3), 'abc');
+assert.equal(rangeBuffer.toString('ascii', '-1.99', 3), 'abc');
+assert.equal(rangeBuffer.toString('ascii', '-Infinity', 3), 'abc');
+
+// if start is an invalid integer, start will be taken as zero
+assert.equal(rangeBuffer.toString('ascii', 'node.js', 3), 'abc');
+assert.equal(rangeBuffer.toString('ascii', {}, 3), 'abc');
+assert.equal(rangeBuffer.toString('ascii', [], 3), 'abc');
+assert.equal(rangeBuffer.toString('ascii', NaN, 3), 'abc');
+assert.equal(rangeBuffer.toString('ascii', null, 3), 'abc');
+assert.equal(rangeBuffer.toString('ascii', undefined, 3), 'abc');
+assert.equal(rangeBuffer.toString('ascii', false, 3), 'abc');
+assert.equal(rangeBuffer.toString('ascii', '', 3), 'abc');
+
+// but, if start is an integer when coerced, then it will be coerced and used.
+assert.equal(rangeBuffer.toString('ascii', '-1', 3), 'abc');
+assert.equal(rangeBuffer.toString('ascii', '1', 3), 'bc');
+assert.equal(rangeBuffer.toString('ascii', '-Infinity', 3), 'abc');
+assert.equal(rangeBuffer.toString('ascii', '3', 3), '');
+assert.equal(rangeBuffer.toString('ascii', Number(3), 3), '');
+assert.equal(rangeBuffer.toString('ascii', '3.14', 3), '');
+assert.equal(rangeBuffer.toString('ascii', '1.99', 3), 'bc');
+assert.equal(rangeBuffer.toString('ascii', '-1.99', 3), 'abc');
+assert.equal(rangeBuffer.toString('ascii', 1.99, 3), 'bc');
+assert.equal(rangeBuffer.toString('ascii', true, 3), 'bc');
+
+// if end > buffer's length, end will be taken as buffer's length
+assert.equal(rangeBuffer.toString('ascii', 0, 5), 'abc');
+assert.equal(rangeBuffer.toString('ascii', 0, 6.99), 'abc');
+assert.equal(rangeBuffer.toString('ascii', 0, Infinity), 'abc');
+assert.equal(rangeBuffer.toString('ascii', 0, '5'), 'abc');
+assert.equal(rangeBuffer.toString('ascii', 0, '6.99'), 'abc');
+assert.equal(rangeBuffer.toString('ascii', 0, 'Infinity'), 'abc');
+
+// if end is an invalid integer, end will be taken as buffer's length
+assert.equal(rangeBuffer.toString('ascii', 0, 'node.js'), '');
+assert.equal(rangeBuffer.toString('ascii', 0, {}), '');
+assert.equal(rangeBuffer.toString('ascii', 0, NaN), '');
+assert.equal(rangeBuffer.toString('ascii', 0, undefined), 'abc');
+assert.equal(rangeBuffer.toString('ascii', 0), 'abc');
+assert.equal(rangeBuffer.toString('ascii', 0, null), '');
+assert.equal(rangeBuffer.toString('ascii', 0, []), '');
+assert.equal(rangeBuffer.toString('ascii', 0, false), '');
+assert.equal(rangeBuffer.toString('ascii', 0, ''), '');
+
+// but, if end is an integer when coerced, then it will be coerced and used.
+assert.equal(rangeBuffer.toString('ascii', 0, '-1'), '');
+assert.equal(rangeBuffer.toString('ascii', 0, '1'), 'a');
+assert.equal(rangeBuffer.toString('ascii', 0, '-Infinity'), '');
+assert.equal(rangeBuffer.toString('ascii', 0, '3'), 'abc');
+assert.equal(rangeBuffer.toString('ascii', 0, Number(3)), 'abc');
+assert.equal(rangeBuffer.toString('ascii', 0, '3.14'), 'abc');
+assert.equal(rangeBuffer.toString('ascii', 0, '1.99'), 'a');
+assert.equal(rangeBuffer.toString('ascii', 0, '-1.99'), '');
+assert.equal(rangeBuffer.toString('ascii', 0, 1.99), 'a');
+assert.equal(rangeBuffer.toString('ascii', 0, true), 'a');
+
+// try toString() with a object as a encoding
+assert.equal(rangeBuffer.toString({toString: function() {
+ return 'ascii';
+}}), 'abc');
+
+// testing for smart defaults and ability to pass string values as offset
+var writeTest = Buffer.from('abcdes');
+writeTest.write('n', 'ascii');
+writeTest.write('o', '1', 'ascii');
+writeTest.write('d', '2', 'ascii');
+writeTest.write('e', 3, 'ascii');
+writeTest.write('j', 4, 'ascii');
+assert.equal(writeTest.toString(), 'nodejs');
+
+// ASCII slice test
+{
+ const asciiString = 'hello world';
+
+ for (let i = 0; i < asciiString.length; i++) {
+ b[i] = asciiString.charCodeAt(i);
+ }
+ const asciiSlice = b.toString('ascii', 0, asciiString.length);
+ assert.equal(asciiString, asciiSlice);
+}
+
+{
+ const asciiString = 'hello world';
+ const offset = 100;
+
+ const written = b.write(asciiString, offset, 'ascii');
+ assert.equal(asciiString.length, written);
+ const asciiSlice = b.toString('ascii', offset, offset + asciiString.length);
+ assert.equal(asciiString, asciiSlice);
+}
+
+{
+ const asciiString = 'hello world';
+ const offset = 100;
+
+ const sliceA = b.slice(offset, offset + asciiString.length);
+ const sliceB = b.slice(offset, offset + asciiString.length);
+ for (let i = 0; i < asciiString.length; i++) {
+ assert.equal(sliceA[i], sliceB[i]);
+ }
+}
+
+// UTF-8 slice test
+
+var utf8String = '¡hέlló wôrld!';
+var offset = 100;
+
+b.write(utf8String, 0, Buffer.byteLength(utf8String), 'utf8');
+var utf8Slice = b.toString('utf8', 0, Buffer.byteLength(utf8String));
+assert.equal(utf8String, utf8Slice);
+
+var written = b.write(utf8String, offset, 'utf8');
+assert.equal(Buffer.byteLength(utf8String), written);
+utf8Slice = b.toString('utf8', offset, offset + Buffer.byteLength(utf8String));
+assert.equal(utf8String, utf8Slice);
+
+var sliceA = b.slice(offset, offset + Buffer.byteLength(utf8String));
+var sliceB = b.slice(offset, offset + Buffer.byteLength(utf8String));
+for (let i = 0; i < Buffer.byteLength(utf8String); i++) {
+ assert.equal(sliceA[i], sliceB[i]);
+}
+
+{
+ const slice = b.slice(100, 150);
+ assert.equal(50, slice.length);
+ for (let i = 0; i < 50; i++) {
+ assert.equal(b[100 + i], slice[i]);
+ }
+}
+
+{
+ // make sure only top level parent propagates from allocPool
+ const b = Buffer.allocUnsafe(5);
+ const c = b.slice(0, 4);
+ const d = c.slice(0, 2);
+ assert.equal(b.parent, c.parent);
+ assert.equal(b.parent, d.parent);
+}
+
+{
+ // also from a non-pooled instance
+ const b = new SlowBuffer(5);
+ const c = b.slice(0, 4);
+ const d = c.slice(0, 2);
+ assert.equal(c.parent, d.parent);
+}
+
+{
+ // Bug regression test
+ const testValue = '\u00F6\u65E5\u672C\u8A9E'; // ö日本語
+ const buffer = Buffer.allocUnsafe(32);
+ const size = buffer.write(testValue, 0, 'utf8');
+ console.log('bytes written to buffer: ' + size);
+ const slice = buffer.toString('utf8', 0, size);
+ assert.equal(slice, testValue);
+}
+
+{
+ // Test triple slice
+ const a = Buffer.allocUnsafe(8);
+ for (let i = 0; i < 8; i++) a[i] = i;
+ const b = a.slice(4, 8);
+ assert.equal(4, b[0]);
+ assert.equal(5, b[1]);
+ assert.equal(6, b[2]);
+ assert.equal(7, b[3]);
+ const c = b.slice(2, 4);
+ assert.equal(6, c[0]);
+ assert.equal(7, c[1]);
+}
+
+{
+ const d = Buffer.from([23, 42, 255]);
+ assert.equal(d.length, 3);
+ assert.equal(d[0], 23);
+ assert.equal(d[1], 42);
+ assert.equal(d[2], 255);
+ assert.deepEqual(d, Buffer.from(d));
+}
+
+{
+ const e = Buffer.from('über');
+ console.error('uber: \'%s\'', e.toString());
+ assert.deepEqual(e, Buffer.from([195, 188, 98, 101, 114]));
+}
+
+{
+ const f = Buffer.from('über', 'ascii');
+ console.error('f.length: %d (should be 4)', f.length);
+ assert.deepEqual(f, Buffer.from([252, 98, 101, 114]));
+}
+
+['ucs2', 'ucs-2', 'utf16le', 'utf-16le'].forEach(function(encoding) {
+ {
+ const f = Buffer.from('über', encoding);
+ console.error('f.length: %d (should be 8)', f.length);
+ assert.deepEqual(f, Buffer.from([252, 0, 98, 0, 101, 0, 114, 0]));
+ }
+
+ {
+ const f = Buffer.from('привет', encoding);
+ console.error('f.length: %d (should be 12)', f.length);
+ assert.deepEqual(f,
+ Buffer.from([63, 4, 64, 4, 56, 4, 50, 4, 53, 4, 66, 4]));
+ assert.equal(f.toString(encoding), 'привет');
+ }
+
+ {
+ const f = Buffer.from([0, 0, 0, 0, 0]);
+ assert.equal(f.length, 5);
+ const size = f.write('あいうえお', encoding);
+ console.error('bytes written to buffer: %d (should be 4)', size);
+ assert.equal(size, 4);
+ assert.deepEqual(f, Buffer.from([0x42, 0x30, 0x44, 0x30, 0x00]));
+ }
+});
+
+{
+ const f = Buffer.from('\uD83D\uDC4D', 'utf-16le'); // THUMBS UP SIGN (U+1F44D)
+ assert.equal(f.length, 4);
+ assert.deepEqual(f, Buffer.from('3DD84DDC', 'hex'));
+}
+
+
+var arrayIsh = {0: 0, 1: 1, 2: 2, 3: 3, length: 4};
+var g = Buffer.from(arrayIsh);
+assert.deepEqual(g, Buffer.from([0, 1, 2, 3]));
+var strArrayIsh = {0: '0', 1: '1', 2: '2', 3: '3', length: 4};
+g = Buffer.from(strArrayIsh);
+assert.deepEqual(g, Buffer.from([0, 1, 2, 3]));
+
+
+//
+// Test toString('base64')
+//
+assert.equal('TWFu', (Buffer.from('Man')).toString('base64'));
+
+{
+ // test that regular and URL-safe base64 both work
+ const expected = [0xff, 0xff, 0xbe, 0xff, 0xef, 0xbf, 0xfb, 0xef, 0xff];
+ assert.deepEqual(Buffer.from('//++/++/++//', 'base64'),
+ Buffer.from(expected));
+ assert.deepEqual(Buffer.from('__--_--_--__', 'base64'),
+ Buffer.from(expected));
+}
+
+{
+ // big example
+ const quote = 'Man is distinguished, not only by his reason, but by this ' +
+ 'singular passion from other animals, which is a lust ' +
+ 'of the mind, that by a perseverance of delight in the ' +
+ 'continued and indefatigable generation of knowledge, exceeds ' +
+ 'the short vehemence of any carnal pleasure.';
+ const expected = 'TWFuIGlzIGRpc3Rpbmd1aXNoZWQsIG5vdCBvbmx5IGJ5IGhpcyByZWFzb' +
+ '24sIGJ1dCBieSB0aGlzIHNpbmd1bGFyIHBhc3Npb24gZnJvbSBvdGhlciBh' +
+ 'bmltYWxzLCB3aGljaCBpcyBhIGx1c3Qgb2YgdGhlIG1pbmQsIHRoYXQgYnk' +
+ 'gYSBwZXJzZXZlcmFuY2Ugb2YgZGVsaWdodCBpbiB0aGUgY29udGludWVkIG' +
+ 'FuZCBpbmRlZmF0aWdhYmxlIGdlbmVyYXRpb24gb2Yga25vd2xlZGdlLCBle' +
+ 'GNlZWRzIHRoZSBzaG9ydCB2ZWhlbWVuY2Ugb2YgYW55IGNhcm5hbCBwbGVh' +
+ 'c3VyZS4=';
+ assert.equal(expected, (Buffer.from(quote)).toString('base64'));
+
+ let b = Buffer.allocUnsafe(1024);
+ let bytesWritten = b.write(expected, 0, 'base64');
+ assert.equal(quote.length, bytesWritten);
+ assert.equal(quote, b.toString('ascii', 0, quote.length));
+
+ // check that the base64 decoder ignores whitespace
+ const expectedWhite = expected.slice(0, 60) + ' \n' +
+ expected.slice(60, 120) + ' \n' +
+ expected.slice(120, 180) + ' \n' +
+ expected.slice(180, 240) + ' \n' +
+ expected.slice(240, 300) + '\n' +
+ expected.slice(300, 360) + '\n';
+ b = Buffer.allocUnsafe(1024);
+ bytesWritten = b.write(expectedWhite, 0, 'base64');
+ assert.equal(quote.length, bytesWritten);
+ assert.equal(quote, b.toString('ascii', 0, quote.length));
+
+ // check that the base64 decoder on the constructor works
+ // even in the presence of whitespace.
+ b = Buffer.from(expectedWhite, 'base64');
+ assert.equal(quote.length, b.length);
+ assert.equal(quote, b.toString('ascii', 0, quote.length));
+
+ // check that the base64 decoder ignores illegal chars
+ const expectedIllegal = expected.slice(0, 60) + ' \x80' +
+ expected.slice(60, 120) + ' \xff' +
+ expected.slice(120, 180) + ' \x00' +
+ expected.slice(180, 240) + ' \x98' +
+ expected.slice(240, 300) + '\x03' +
+ expected.slice(300, 360);
+ b = Buffer.from(expectedIllegal, 'base64');
+ assert.equal(quote.length, b.length);
+ assert.equal(quote, b.toString('ascii', 0, quote.length));
+}
+
+assert.equal(Buffer.from('', 'base64').toString(), '');
+assert.equal(Buffer.from('K', 'base64').toString(), '');
+
+// multiple-of-4 with padding
+assert.equal(Buffer.from('Kg==', 'base64').toString(), '*');
+assert.equal(Buffer.from('Kio=', 'base64').toString(), '**');
+assert.equal(Buffer.from('Kioq', 'base64').toString(), '***');
+assert.equal(Buffer.from('KioqKg==', 'base64').toString(), '****');
+assert.equal(Buffer.from('KioqKio=', 'base64').toString(), '*****');
+assert.equal(Buffer.from('KioqKioq', 'base64').toString(), '******');
+assert.equal(Buffer.from('KioqKioqKg==', 'base64').toString(), '*******');
+assert.equal(Buffer.from('KioqKioqKio=', 'base64').toString(), '********');
+assert.equal(Buffer.from('KioqKioqKioq', 'base64').toString(), '*********');
+assert.equal(Buffer.from('KioqKioqKioqKg==', 'base64').toString(),
+ '**********');
+assert.equal(Buffer.from('KioqKioqKioqKio=', 'base64').toString(),
+ '***********');
+assert.equal(Buffer.from('KioqKioqKioqKioq', 'base64').toString(),
+ '************');
+assert.equal(Buffer.from('KioqKioqKioqKioqKg==', 'base64').toString(),
+ '*************');
+assert.equal(Buffer.from('KioqKioqKioqKioqKio=', 'base64').toString(),
+ '**************');
+assert.equal(Buffer.from('KioqKioqKioqKioqKioq', 'base64').toString(),
+ '***************');
+assert.equal(Buffer.from('KioqKioqKioqKioqKioqKg==', 'base64').toString(),
+ '****************');
+assert.equal(Buffer.from('KioqKioqKioqKioqKioqKio=', 'base64').toString(),
+ '*****************');
+assert.equal(Buffer.from('KioqKioqKioqKioqKioqKioq', 'base64').toString(),
+ '******************');
+assert.equal(Buffer.from('KioqKioqKioqKioqKioqKioqKg==', 'base64').toString(),
+ '*******************');
+assert.equal(Buffer.from('KioqKioqKioqKioqKioqKioqKio=', 'base64').toString(),
+ '********************');
+
+// no padding, not a multiple of 4
+assert.equal(Buffer.from('Kg', 'base64').toString(), '*');
+assert.equal(Buffer.from('Kio', 'base64').toString(), '**');
+assert.equal(Buffer.from('KioqKg', 'base64').toString(), '****');
+assert.equal(Buffer.from('KioqKio', 'base64').toString(), '*****');
+assert.equal(Buffer.from('KioqKioqKg', 'base64').toString(), '*******');
+assert.equal(Buffer.from('KioqKioqKio', 'base64').toString(), '********');
+assert.equal(Buffer.from('KioqKioqKioqKg', 'base64').toString(), '**********');
+assert.equal(Buffer.from('KioqKioqKioqKio', 'base64').toString(),
+ '***********');
+assert.equal(Buffer.from('KioqKioqKioqKioqKg', 'base64').toString(),
+ '*************');
+assert.equal(Buffer.from('KioqKioqKioqKioqKio', 'base64').toString(),
+ '**************');
+assert.equal(Buffer.from('KioqKioqKioqKioqKioqKg', 'base64').toString(),
+ '****************');
+assert.equal(Buffer.from('KioqKioqKioqKioqKioqKio', 'base64').toString(),
+ '*****************');
+assert.equal(Buffer.from('KioqKioqKioqKioqKioqKioqKg', 'base64').toString(),
+ '*******************');
+assert.equal(Buffer.from('KioqKioqKioqKioqKioqKioqKio', 'base64').toString(),
+ '********************');
+
+// handle padding graciously, multiple-of-4 or not
+assert.equal(Buffer.from('72INjkR5fchcxk9+VgdGPFJDxUBFR5/rMFsghgxADiw==',
+ 'base64').length, 32);
+assert.equal(Buffer.from('72INjkR5fchcxk9+VgdGPFJDxUBFR5/rMFsghgxADiw=',
+ 'base64').length, 32);
+assert.equal(Buffer.from('72INjkR5fchcxk9+VgdGPFJDxUBFR5/rMFsghgxADiw',
+ 'base64').length, 32);
+assert.equal(Buffer.from('w69jACy6BgZmaFvv96HG6MYksWytuZu3T1FvGnulPg==',
+ 'base64').length, 31);
+assert.equal(Buffer.from('w69jACy6BgZmaFvv96HG6MYksWytuZu3T1FvGnulPg=',
+ 'base64').length, 31);
+assert.equal(Buffer.from('w69jACy6BgZmaFvv96HG6MYksWytuZu3T1FvGnulPg',
+ 'base64').length, 31);
+
+// This string encodes single '.' character in UTF-16
+var dot = Buffer.from('//4uAA==', 'base64');
+assert.equal(dot[0], 0xff);
+assert.equal(dot[1], 0xfe);
+assert.equal(dot[2], 0x2e);
+assert.equal(dot[3], 0x00);
+assert.equal(dot.toString('base64'), '//4uAA==');
+
+{
+ // Writing base64 at a position > 0 should not mangle the result.
+ //
+ // https://github.com/joyent/node/issues/402
+ const segments = ['TWFkbmVzcz8h', 'IFRoaXM=', 'IGlz', 'IG5vZGUuanMh'];
+ const b = Buffer.allocUnsafe(64);
+ let pos = 0;
+
+ for (let i = 0; i < segments.length; ++i) {
+ pos += b.write(segments[i], pos, 'base64');
+ }
+ assert.equal(b.toString('binary', 0, pos), 'Madness?! This is node.js!');
+}
+
+// Regression test for https://github.com/nodejs/node/issues/3496.
+assert.equal(Buffer.from('=bad'.repeat(1e4), 'base64').length, 0);
+
+{
+ // Creating buffers larger than pool size.
+ const l = Buffer.poolSize + 5;
+ let s = '';
+ for (let i = 0; i < l; i++) {
+ s += 'h';
+ }
+
+ const b = Buffer.from(s);
+
+ for (let i = 0; i < l; i++) {
+ assert.equal('h'.charCodeAt(0), b[i]);
+ }
+
+ const sb = b.toString();
+ assert.equal(sb.length, s.length);
+ assert.equal(sb, s);
+}
+
+{
+ // Single argument slice
+ const b = Buffer.from('abcde');
+ assert.equal('bcde', b.slice(1).toString());
+}
+
+// slice(0,0).length === 0
+assert.equal(0, Buffer.from('hello').slice(0, 0).length);
+
+// test hex toString
+console.log('Create hex string from buffer');
+var hexb = Buffer.allocUnsafe(256);
+for (let i = 0; i < 256; i++) {
+ hexb[i] = i;
+}
+var hexStr = hexb.toString('hex');
+assert.equal(hexStr,
+ '000102030405060708090a0b0c0d0e0f' +
+ '101112131415161718191a1b1c1d1e1f' +
+ '202122232425262728292a2b2c2d2e2f' +
+ '303132333435363738393a3b3c3d3e3f' +
+ '404142434445464748494a4b4c4d4e4f' +
+ '505152535455565758595a5b5c5d5e5f' +
+ '606162636465666768696a6b6c6d6e6f' +
+ '707172737475767778797a7b7c7d7e7f' +
+ '808182838485868788898a8b8c8d8e8f' +
+ '909192939495969798999a9b9c9d9e9f' +
+ 'a0a1a2a3a4a5a6a7a8a9aaabacadaeaf' +
+ 'b0b1b2b3b4b5b6b7b8b9babbbcbdbebf' +
+ 'c0c1c2c3c4c5c6c7c8c9cacbcccdcecf' +
+ 'd0d1d2d3d4d5d6d7d8d9dadbdcdddedf' +
+ 'e0e1e2e3e4e5e6e7e8e9eaebecedeeef' +
+ 'f0f1f2f3f4f5f6f7f8f9fafbfcfdfeff');
+
+console.log('Create buffer from hex string');
+var hexb2 = Buffer.from(hexStr, 'hex');
+for (let i = 0; i < 256; i++) {
+ assert.equal(hexb2[i], hexb[i]);
+}
+
+{
+ // test an invalid slice end.
+ console.log('Try to slice off the end of the buffer');
+ const b = Buffer.from([1, 2, 3, 4, 5]);
+ const b2 = b.toString('hex', 1, 10000);
+ const b3 = b.toString('hex', 1, 5);
+ const b4 = b.toString('hex', 1);
+ assert.equal(b2, b3);
+ assert.equal(b2, b4);
+}
+
+function buildBuffer(data) {
+ if (Array.isArray(data)) {
+ var buffer = Buffer.allocUnsafe(data.length);
+ data.forEach(function(v, k) {
+ buffer[k] = v;
+ });
+ return buffer;
+ }
+ return null;
+}
+
+var x = buildBuffer([0x81, 0xa3, 0x66, 0x6f, 0x6f, 0xa3, 0x62, 0x61, 0x72]);
+
+console.log(x.inspect());
+assert.equal('<Buffer 81 a3 66 6f 6f a3 62 61 72>', x.inspect());
+
+{
+ const z = x.slice(4);
+ console.log(z.inspect());
+ console.log(z.length);
+ assert.equal(5, z.length);
+ assert.equal(0x6f, z[0]);
+ assert.equal(0xa3, z[1]);
+ assert.equal(0x62, z[2]);
+ assert.equal(0x61, z[3]);
+ assert.equal(0x72, z[4]);
+}
+
+{
+ const z = x.slice(0);
+ console.log(z.inspect());
+ console.log(z.length);
+ assert.equal(z.length, x.length);
+}
+
+{
+ const z = x.slice(0, 4);
+ console.log(z.inspect());
+ console.log(z.length);
+ assert.equal(4, z.length);
+ assert.equal(0x81, z[0]);
+ assert.equal(0xa3, z[1]);
+}
+
+{
+ const z = x.slice(0, 9);
+ console.log(z.inspect());
+ console.log(z.length);
+ assert.equal(9, z.length);
+}
+
+{
+ const z = x.slice(1, 4);
+ console.log(z.inspect());
+ console.log(z.length);
+ assert.equal(3, z.length);
+ assert.equal(0xa3, z[0]);
+}
+
+{
+ const z = x.slice(2, 4);
+ console.log(z.inspect());
+ console.log(z.length);
+ assert.equal(2, z.length);
+ assert.equal(0x66, z[0]);
+ assert.equal(0x6f, z[1]);
+}
+
+assert.equal(0, Buffer.from('hello').slice(0, 0).length);
+
+['ucs2', 'ucs-2', 'utf16le', 'utf-16le'].forEach(function(encoding) {
+ const b = Buffer.allocUnsafe(10);
+ b.write('あいうえお', encoding);
+ assert.equal(b.toString(encoding), 'あいうえお');
+});
+
+{
+ // Binary encoding should write only one byte per character.
+ const b = Buffer.from([0xde, 0xad, 0xbe, 0xef]);
+ let s = String.fromCharCode(0xffff);
+ b.write(s, 0, 'binary');
+ assert.equal(0xff, b[0]);
+ assert.equal(0xad, b[1]);
+ assert.equal(0xbe, b[2]);
+ assert.equal(0xef, b[3]);
+ s = String.fromCharCode(0xaaee);
+ b.write(s, 0, 'binary');
+ assert.equal(0xee, b[0]);
+ assert.equal(0xad, b[1]);
+ assert.equal(0xbe, b[2]);
+ assert.equal(0xef, b[3]);
+}
+
+{
+ // #1210 Test UTF-8 string includes null character
+ let buf = Buffer.from('\0');
+ assert.equal(buf.length, 1);
+ buf = Buffer.from('\0\0');
+ assert.equal(buf.length, 2);
+}
+
+{
+ const buf = Buffer.allocUnsafe(2);
+ let written = buf.write(''); // 0byte
+ assert.equal(written, 0);
+ written = buf.write('\0'); // 1byte (v8 adds null terminator)
+ assert.equal(written, 1);
+ written = buf.write('a\0'); // 1byte * 2
+ assert.equal(written, 2);
+ written = buf.write('あ'); // 3bytes
+ assert.equal(written, 0);
+ written = buf.write('\0あ'); // 1byte + 3bytes
+ assert.equal(written, 1);
+ written = buf.write('\0\0あ'); // 1byte * 2 + 3bytes
+ assert.equal(written, 2);
+}
+
+{
+ const buf = Buffer.allocUnsafe(10);
+ written = buf.write('あいう'); // 3bytes * 3 (v8 adds null terminator)
+ assert.equal(written, 9);
+ written = buf.write('あいう\0'); // 3bytes * 3 + 1byte
+ assert.equal(written, 10);
+}
+
+{
+ // #243 Test write() with maxLength
+ const buf = Buffer.allocUnsafe(4);
+ buf.fill(0xFF);
+ let written = buf.write('abcd', 1, 2, 'utf8');
+ console.log(buf);
+ assert.equal(written, 2);
+ assert.equal(buf[0], 0xFF);
+ assert.equal(buf[1], 0x61);
+ assert.equal(buf[2], 0x62);
+ assert.equal(buf[3], 0xFF);
+
+ buf.fill(0xFF);
+ written = buf.write('abcd', 1, 4);
+ console.log(buf);
+ assert.equal(written, 3);
+ assert.equal(buf[0], 0xFF);
+ assert.equal(buf[1], 0x61);
+ assert.equal(buf[2], 0x62);
+ assert.equal(buf[3], 0x63);
+
+ buf.fill(0xFF);
+ written = buf.write('abcd', 1, 2, 'utf8');
+ console.log(buf);
+ assert.equal(written, 2);
+ assert.equal(buf[0], 0xFF);
+ assert.equal(buf[1], 0x61);
+ assert.equal(buf[2], 0x62);
+ assert.equal(buf[3], 0xFF);
+
+ buf.fill(0xFF);
+ written = buf.write('abcdef', 1, 2, 'hex');
+ console.log(buf);
+ assert.equal(written, 2);
+ assert.equal(buf[0], 0xFF);
+ assert.equal(buf[1], 0xAB);
+ assert.equal(buf[2], 0xCD);
+ assert.equal(buf[3], 0xFF);
+
+ ['ucs2', 'ucs-2', 'utf16le', 'utf-16le'].forEach(function(encoding) {
+ buf.fill(0xFF);
+ written = buf.write('abcd', 0, 2, encoding);
+ console.log(buf);
+ assert.equal(written, 2);
+ assert.equal(buf[0], 0x61);
+ assert.equal(buf[1], 0x00);
+ assert.equal(buf[2], 0xFF);
+ assert.equal(buf[3], 0xFF);
+ });
+}
+
+{
+ // test offset returns are correct
+ const b = Buffer.allocUnsafe(16);
+ assert.equal(4, b.writeUInt32LE(0, 0));
+ assert.equal(6, b.writeUInt16LE(0, 4));
+ assert.equal(7, b.writeUInt8(0, 6));
+ assert.equal(8, b.writeInt8(0, 7));
+ assert.equal(16, b.writeDoubleLE(0, 8));
+}
+
+{
+ // test unmatched surrogates not producing invalid utf8 output
+ // ef bf bd = utf-8 representation of unicode replacement character
+ // see https://codereview.chromium.org/121173009/
+ const buf = Buffer.from('ab\ud800cd', 'utf8');
+ assert.equal(buf[0], 0x61);
+ assert.equal(buf[1], 0x62);
+ assert.equal(buf[2], 0xef);
+ assert.equal(buf[3], 0xbf);
+ assert.equal(buf[4], 0xbd);
+ assert.equal(buf[5], 0x63);
+ assert.equal(buf[6], 0x64);
+}
+
+{
+ // test for buffer overrun
+ const buf = Buffer.from([0, 0, 0, 0, 0]); // length: 5
+ var sub = buf.slice(0, 4); // length: 4
+ written = sub.write('12345', 'binary');
+ assert.equal(written, 4);
+ assert.equal(buf[4], 0);
+}
+
+// Check for fractional length args, junk length args, etc.
+// https://github.com/joyent/node/issues/1758
+
+// Call .fill() first, stops valgrind warning about uninitialized memory reads.
+Buffer.allocUnsafe(3.3).fill().toString();
+ // throws bad argument error in commit 43cb4ec
+Buffer.alloc(3.3).fill().toString();
+assert.equal(Buffer.allocUnsafe(-1).length, 0);
+assert.equal(Buffer.allocUnsafe(NaN).length, 0);
+assert.equal(Buffer.allocUnsafe(3.3).length, 3);
+assert.equal(Buffer.from({length: 3.3}).length, 3);
+assert.equal(Buffer.from({length: 'BAM'}).length, 0);
+
+// Make sure that strings are not coerced to numbers.
+assert.equal(Buffer.from('99').length, 2);
+assert.equal(Buffer.from('13.37').length, 5);
+
+// Ensure that the length argument is respected.
+'ascii utf8 hex base64 binary'.split(' ').forEach(function(enc) {
+ assert.equal(Buffer.allocUnsafe(1).write('aaaaaa', 0, 1, enc), 1);
+});
+
+{
+ // Regression test, guard against buffer overrun in the base64 decoder.
+ const a = Buffer.allocUnsafe(3);
+ const b = Buffer.from('xxx');
+ a.write('aaaaaaaa', 'base64');
+ assert.equal(b.toString(), 'xxx');
+}
+
+// issue GH-3416
+Buffer.from(Buffer.allocUnsafe(0), 0, 0);
+
+[ 'hex',
+ 'utf8',
+ 'utf-8',
+ 'ascii',
+ 'binary',
+ 'base64',
+ 'ucs2',
+ 'ucs-2',
+ 'utf16le',
+ 'utf-16le' ].forEach(function(enc) {
+ assert.equal(Buffer.isEncoding(enc), true);
+ });
+
+[ 'utf9',
+ 'utf-7',
+ 'Unicode-FTW',
+ 'new gnu gun' ].forEach(function(enc) {
+ assert.equal(Buffer.isEncoding(enc), false);
+ });
+
+
+// GH-5110
+(function() {
+ const buffer = Buffer.from('test');
+ const string = JSON.stringify(buffer);
+
+ assert.equal(string, '{"type":"Buffer","data":[116,101,115,116]}');
+
+ assert.deepEqual(buffer, JSON.parse(string, function(key, value) {
+ return value && value.type === 'Buffer'
+ ? Buffer.from(value.data)
+ : value;
+ }));
+})();
+
+// issue GH-7849
+(function() {
+ var buf = Buffer.from('test');
+ var json = JSON.stringify(buf);
+ var obj = JSON.parse(json);
+ var copy = Buffer.from(obj);
+
+ assert(buf.equals(copy));
+})();
+
+// issue GH-4331
+assert.throws(function() {
+ Buffer.allocUnsafe(0xFFFFFFFF);
+}, RangeError);
+assert.throws(function() {
+ Buffer.allocUnsafe(0xFFFFFFFFF);
+}, RangeError);
+
+
+// attempt to overflow buffers, similar to previous bug in array buffers
+assert.throws(function() {
+ var buf = Buffer.allocUnsafe(8);
+ buf.readFloatLE(0xffffffff);
+}, RangeError);
+
+assert.throws(function() {
+ var buf = Buffer.allocUnsafe(8);
+ buf.writeFloatLE(0.0, 0xffffffff);
+}, RangeError);
+
+assert.throws(function() {
+ var buf = Buffer.allocUnsafe(8);
+ buf.readFloatLE(0xffffffff);
+}, RangeError);
+
+assert.throws(function() {
+ var buf = Buffer.allocUnsafe(8);
+ buf.writeFloatLE(0.0, 0xffffffff);
+}, RangeError);
+
+
+// ensure negative values can't get past offset
+assert.throws(function() {
+ var buf = Buffer.allocUnsafe(8);
+ buf.readFloatLE(-1);
+}, RangeError);
+
+assert.throws(function() {
+ var buf = Buffer.allocUnsafe(8);
+ buf.writeFloatLE(0.0, -1);
+}, RangeError);
+
+assert.throws(function() {
+ var buf = Buffer.allocUnsafe(8);
+ buf.readFloatLE(-1);
+}, RangeError);
+
+assert.throws(function() {
+ var buf = Buffer.allocUnsafe(8);
+ buf.writeFloatLE(0.0, -1);
+}, RangeError);
+
+// offset checks
+{
+ const buf = Buffer.allocUnsafe(0);
+
+ assert.throws(function() { buf.readUInt8(0); }, RangeError);
+ assert.throws(function() { buf.readInt8(0); }, RangeError);
+}
+
+{
+ const buf = Buffer.from([0xFF]);
+
+ assert.equal(buf.readUInt8(0), 255);
+ assert.equal(buf.readInt8(0), -1);
+}
+
+[16, 32].forEach(function(bits) {
+ var buf = Buffer.allocUnsafe(bits / 8 - 1);
+
+ assert.throws(function() { buf['readUInt' + bits + 'BE'](0); },
+ RangeError,
+ 'readUInt' + bits + 'BE');
+
+ assert.throws(function() { buf['readUInt' + bits + 'LE'](0); },
+ RangeError,
+ 'readUInt' + bits + 'LE');
+
+ assert.throws(function() { buf['readInt' + bits + 'BE'](0); },
+ RangeError,
+ 'readInt' + bits + 'BE()');
+
+ assert.throws(function() { buf['readInt' + bits + 'LE'](0); },
+ RangeError,
+ 'readInt' + bits + 'LE()');
+});
+
+[16, 32].forEach(function(bits) {
+ var buf = Buffer.from([0xFF, 0xFF, 0xFF, 0xFF]);
+
+ assert.equal(buf['readUInt' + bits + 'BE'](0),
+ (0xFFFFFFFF >>> (32 - bits)));
+
+ assert.equal(buf['readUInt' + bits + 'LE'](0),
+ (0xFFFFFFFF >>> (32 - bits)));
+
+ assert.equal(buf['readInt' + bits + 'BE'](0),
+ (0xFFFFFFFF >> (32 - bits)));
+
+ assert.equal(buf['readInt' + bits + 'LE'](0),
+ (0xFFFFFFFF >> (32 - bits)));
+});
+
+// test for common read(U)IntLE/BE
+(function() {
+ var buf = Buffer.from([0x01, 0x02, 0x03, 0x04, 0x05, 0x06]);
+
+ assert.equal(buf.readUIntLE(0, 1), 0x01);
+ assert.equal(buf.readUIntBE(0, 1), 0x01);
+ assert.equal(buf.readUIntLE(0, 3), 0x030201);
+ assert.equal(buf.readUIntBE(0, 3), 0x010203);
+ assert.equal(buf.readUIntLE(0, 5), 0x0504030201);
+ assert.equal(buf.readUIntBE(0, 5), 0x0102030405);
+ assert.equal(buf.readUIntLE(0, 6), 0x060504030201);
+ assert.equal(buf.readUIntBE(0, 6), 0x010203040506);
+ assert.equal(buf.readIntLE(0, 1), 0x01);
+ assert.equal(buf.readIntBE(0, 1), 0x01);
+ assert.equal(buf.readIntLE(0, 3), 0x030201);
+ assert.equal(buf.readIntBE(0, 3), 0x010203);
+ assert.equal(buf.readIntLE(0, 5), 0x0504030201);
+ assert.equal(buf.readIntBE(0, 5), 0x0102030405);
+ assert.equal(buf.readIntLE(0, 6), 0x060504030201);
+ assert.equal(buf.readIntBE(0, 6), 0x010203040506);
+})();
+
+// test for common write(U)IntLE/BE
+(function() {
+ var buf = Buffer.allocUnsafe(3);
+ buf.writeUIntLE(0x123456, 0, 3);
+ assert.deepEqual(buf.toJSON().data, [0x56, 0x34, 0x12]);
+ assert.equal(buf.readUIntLE(0, 3), 0x123456);
+
+ buf = Buffer.allocUnsafe(3);
+ buf.writeUIntBE(0x123456, 0, 3);
+ assert.deepEqual(buf.toJSON().data, [0x12, 0x34, 0x56]);
+ assert.equal(buf.readUIntBE(0, 3), 0x123456);
+
+ buf = Buffer.allocUnsafe(3);
+ buf.writeIntLE(0x123456, 0, 3);
+ assert.deepEqual(buf.toJSON().data, [0x56, 0x34, 0x12]);
+ assert.equal(buf.readIntLE(0, 3), 0x123456);
+
+ buf = Buffer.allocUnsafe(3);
+ buf.writeIntBE(0x123456, 0, 3);
+ assert.deepEqual(buf.toJSON().data, [0x12, 0x34, 0x56]);
+ assert.equal(buf.readIntBE(0, 3), 0x123456);
+
+ buf = Buffer.allocUnsafe(3);
+ buf.writeIntLE(-0x123456, 0, 3);
+ assert.deepEqual(buf.toJSON().data, [0xaa, 0xcb, 0xed]);
+ assert.equal(buf.readIntLE(0, 3), -0x123456);
+
+ buf = Buffer.allocUnsafe(3);
+ buf.writeIntBE(-0x123456, 0, 3);
+ assert.deepEqual(buf.toJSON().data, [0xed, 0xcb, 0xaa]);
+ assert.equal(buf.readIntBE(0, 3), -0x123456);
+
+ buf = Buffer.allocUnsafe(3);
+ buf.writeIntLE(-0x123400, 0, 3);
+ assert.deepEqual(buf.toJSON().data, [0x00, 0xcc, 0xed]);
+ assert.equal(buf.readIntLE(0, 3), -0x123400);
+
+ buf = Buffer.allocUnsafe(3);
+ buf.writeIntBE(-0x123400, 0, 3);
+ assert.deepEqual(buf.toJSON().data, [0xed, 0xcc, 0x00]);
+ assert.equal(buf.readIntBE(0, 3), -0x123400);
+
+ buf = Buffer.allocUnsafe(3);
+ buf.writeIntLE(-0x120000, 0, 3);
+ assert.deepEqual(buf.toJSON().data, [0x00, 0x00, 0xee]);
+ assert.equal(buf.readIntLE(0, 3), -0x120000);
+
+ buf = Buffer.allocUnsafe(3);
+ buf.writeIntBE(-0x120000, 0, 3);
+ assert.deepEqual(buf.toJSON().data, [0xee, 0x00, 0x00]);
+ assert.equal(buf.readIntBE(0, 3), -0x120000);
+
+ buf = Buffer.allocUnsafe(5);
+ buf.writeUIntLE(0x1234567890, 0, 5);
+ assert.deepEqual(buf.toJSON().data, [0x90, 0x78, 0x56, 0x34, 0x12]);
+ assert.equal(buf.readUIntLE(0, 5), 0x1234567890);
+
+ buf = Buffer.allocUnsafe(5);
+ buf.writeUIntBE(0x1234567890, 0, 5);
+ assert.deepEqual(buf.toJSON().data, [0x12, 0x34, 0x56, 0x78, 0x90]);
+ assert.equal(buf.readUIntBE(0, 5), 0x1234567890);
+
+ buf = Buffer.allocUnsafe(5);
+ buf.writeIntLE(0x1234567890, 0, 5);
+ assert.deepEqual(buf.toJSON().data, [0x90, 0x78, 0x56, 0x34, 0x12]);
+ assert.equal(buf.readIntLE(0, 5), 0x1234567890);
+
+ buf = Buffer.allocUnsafe(5);
+ buf.writeIntBE(0x1234567890, 0, 5);
+ assert.deepEqual(buf.toJSON().data, [0x12, 0x34, 0x56, 0x78, 0x90]);
+ assert.equal(buf.readIntBE(0, 5), 0x1234567890);
+
+ buf = Buffer.allocUnsafe(5);
+ buf.writeIntLE(-0x1234567890, 0, 5);
+ assert.deepEqual(buf.toJSON().data, [0x70, 0x87, 0xa9, 0xcb, 0xed]);
+ assert.equal(buf.readIntLE(0, 5), -0x1234567890);
+
+ buf = Buffer.allocUnsafe(5);
+ buf.writeIntBE(-0x1234567890, 0, 5);
+ assert.deepEqual(buf.toJSON().data, [0xed, 0xcb, 0xa9, 0x87, 0x70]);
+ assert.equal(buf.readIntBE(0, 5), -0x1234567890);
+
+ buf = Buffer.allocUnsafe(5);
+ buf.writeIntLE(-0x0012000000, 0, 5);
+ assert.deepEqual(buf.toJSON().data, [0x00, 0x00, 0x00, 0xee, 0xff]);
+ assert.equal(buf.readIntLE(0, 5), -0x0012000000);
+
+ buf = Buffer.allocUnsafe(5);
+ buf.writeIntBE(-0x0012000000, 0, 5);
+ assert.deepEqual(buf.toJSON().data, [0xff, 0xee, 0x00, 0x00, 0x00]);
+ assert.equal(buf.readIntBE(0, 5), -0x0012000000);
+})();
+
+// test Buffer slice
+(function() {
+ var buf = Buffer.from('0123456789');
+ assert.equal(buf.slice(-10, 10), '0123456789');
+ assert.equal(buf.slice(-20, 10), '0123456789');
+ assert.equal(buf.slice(-20, -10), '');
+ assert.equal(buf.slice(), '0123456789');
+ assert.equal(buf.slice(0), '0123456789');
+ assert.equal(buf.slice(0, 0), '');
+ assert.equal(buf.slice(undefined), '0123456789');
+ assert.equal(buf.slice('foobar'), '0123456789');
+ assert.equal(buf.slice(undefined, undefined), '0123456789');
+
+ assert.equal(buf.slice(2), '23456789');
+ assert.equal(buf.slice(5), '56789');
+ assert.equal(buf.slice(10), '');
+ assert.equal(buf.slice(5, 8), '567');
+ assert.equal(buf.slice(8, -1), '8');
+ assert.equal(buf.slice(-10), '0123456789');
+ assert.equal(buf.slice(0, -9), '0');
+ assert.equal(buf.slice(0, -10), '');
+ assert.equal(buf.slice(0, -1), '012345678');
+ assert.equal(buf.slice(2, -2), '234567');
+ assert.equal(buf.slice(0, 65536), '0123456789');
+ assert.equal(buf.slice(65536, 0), '');
+ assert.equal(buf.slice(-5, -8), '');
+ assert.equal(buf.slice(-5, -3), '56');
+ assert.equal(buf.slice(-10, 10), '0123456789');
+ for (let i = 0, s = buf.toString(); i < buf.length; ++i) {
+ assert.equal(buf.slice(i), s.slice(i));
+ assert.equal(buf.slice(0, i), s.slice(0, i));
+ assert.equal(buf.slice(-i), s.slice(-i));
+ assert.equal(buf.slice(0, -i), s.slice(0, -i));
+ }
+
+ var utf16Buf = Buffer.from('0123456789', 'utf16le');
+ assert.deepEqual(utf16Buf.slice(0, 6), Buffer.from('012', 'utf16le'));
+
+ assert.equal(buf.slice('0', '1'), '0');
+ assert.equal(buf.slice('-5', '10'), '56789');
+ assert.equal(buf.slice('-10', '10'), '0123456789');
+ assert.equal(buf.slice('-10', '-5'), '01234');
+ assert.equal(buf.slice('-10', '-0'), '');
+ assert.equal(buf.slice('111'), '');
+ assert.equal(buf.slice('0', '-111'), '');
+
+ // try to slice a zero length Buffer
+ // see https://github.com/joyent/node/issues/5881
+ SlowBuffer(0).slice(0, 1);
+})();
+
+// Regression test for #5482: should throw but not assert in C++ land.
+assert.throws(function() {
+ Buffer.from('', 'buffer');
+}, TypeError);
+
+// Regression test for #6111. Constructing a buffer from another buffer
+// should a) work, and b) not corrupt the source buffer.
+(function() {
+ var a = [0];
+ for (let i = 0; i < 7; ++i) a = a.concat(a);
+ a = a.map(function(_, i) { return i; });
+ const b = Buffer.from(a);
+ const c = Buffer.from(b);
+ assert.equal(b.length, a.length);
+ assert.equal(c.length, a.length);
+ for (let i = 0, k = a.length; i < k; ++i) {
+ assert.equal(a[i], i);
+ assert.equal(b[i], i);
+ assert.equal(c[i], i);
+ }
+})();
+
+
+assert.throws(function() {
+ Buffer.allocUnsafe((-1 >>> 0) + 1);
+}, RangeError);
+
+assert.throws(function() {
+ SlowBuffer((-1 >>> 0) + 1);
+}, RangeError);
+
+if (common.hasCrypto) {
+ // Test truncation after decode
+ var crypto = require('crypto');
+
+ var b1 = Buffer.from('YW55=======', 'base64');
+ var b2 = Buffer.from('YW55', 'base64');
+
+ assert.equal(
+ crypto.createHash('sha1').update(b1).digest('hex'),
+ crypto.createHash('sha1').update(b2).digest('hex')
+ );
+} else {
+ console.log('1..0 # Skipped: missing crypto');
+}
+
+// Test Compare
+{
+ const b = Buffer.alloc(1, 'a');
+ const c = Buffer.alloc(1, 'c');
+ const d = Buffer.alloc(2, 'aa');
+
+ assert.equal(b.compare(c), -1);
+ assert.equal(c.compare(d), 1);
+ assert.equal(d.compare(b), 1);
+ assert.equal(b.compare(d), -1);
+ assert.equal(b.compare(b), 0);
+
+ assert.equal(Buffer.compare(b, c), -1);
+ assert.equal(Buffer.compare(c, d), 1);
+ assert.equal(Buffer.compare(d, b), 1);
+ assert.equal(Buffer.compare(b, d), -1);
+ assert.equal(Buffer.compare(c, c), 0);
+
+ assert.equal(Buffer.compare(Buffer.alloc(0), Buffer.alloc(0)), 0);
+ assert.equal(Buffer.compare(Buffer.alloc(0), Buffer.alloc(1)), -1);
+ assert.equal(Buffer.compare(Buffer.alloc(1), Buffer.alloc(0)), 1);
+}
+
+assert.throws(function() {
+ var b = Buffer.allocUnsafe(1);
+ Buffer.compare(b, 'abc');
+});
+
+assert.throws(function() {
+ var b = Buffer.allocUnsafe(1);
+ Buffer.compare('abc', b);
+});
+
+assert.throws(function() {
+ var b = Buffer.allocUnsafe(1);
+ b.compare('abc');
+});
+
+// Test Equals
+{
+ const b = Buffer.alloc(5, 'abcdf');
+ const c = Buffer.alloc(5, 'abcdf');
+ const d = Buffer.alloc(5, 'abcde');
+ const e = Buffer.alloc(6, 'abcdef');
+
+ assert.ok(b.equals(c));
+ assert.ok(!c.equals(d));
+ assert.ok(!d.equals(e));
+ assert.ok(d.equals(d));
+}
+
+assert.throws(function() {
+ var b = Buffer.allocUnsafe(1);
+ b.equals('abc');
+});
+
+// Regression test for https://github.com/nodejs/node/issues/649.
+assert.throws(() => { Buffer.allocUnsafe(1422561062959).toString('utf8');});
+
+var ps = Buffer.poolSize;
+Buffer.poolSize = 0;
+assert.equal(Buffer.allocUnsafe(1).parent, undefined);
+Buffer.poolSize = ps;
+
+// Test Buffer.copy() segfault
+assert.throws(function() {
+ Buffer.allocUnsafe(10).copy();
+});
+
+const regErrorMsg = new RegExp('First argument must be a string, Buffer, ' +
+ 'ArrayBuffer, Array, or array-like object.');
+
+assert.throws(function() {
+ Buffer.from();
+}, regErrorMsg);
+
+assert.throws(function() {
+ Buffer.from(null);
+}, regErrorMsg);
+
+
+// Test prototype getters don't throw
+assert.equal(Buffer.prototype.parent, undefined);
+assert.equal(Buffer.prototype.offset, undefined);
+assert.equal(SlowBuffer.prototype.parent, undefined);
+assert.equal(SlowBuffer.prototype.offset, undefined);
generated by cgit v1.2.3 (git 2.39.1) at 2024-05-26 18:27:57 +0000