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466 lines
11 KiB
JavaScript
466 lines
11 KiB
JavaScript
// deno-fmt-ignore-file
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// deno-lint-ignore-file
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// Copyright Joyent and Node contributors. All rights reserved. MIT license.
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// Taken from Node 18.12.1
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// This file is automatically generated by `tools/node_compat/setup.ts`. Do not modify this file manually.
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// Copyright Joyent, Inc. and other Node contributors.
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//
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// Permission is hereby granted, free of charge, to any person obtaining a
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// copy of this software and associated documentation files (the
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// "Software"), to deal in the Software without restriction, including
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// without limitation the rights to use, copy, modify, merge, publish,
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// distribute, sublicense, and/or sell copies of the Software, and to permit
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// persons to whom the Software is furnished to do so, subject to the
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// following conditions:
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//
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// The above copyright notice and this permission notice shall be included
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// in all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
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// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
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// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
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// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
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// USE OR OTHER DEALINGS IN THE SOFTWARE.
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'use strict';
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const common = require('../common');
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const { Writable: W, Duplex: D } = require('stream');
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const assert = require('assert');
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class TestWriter extends W {
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constructor(opts) {
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super(opts);
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this.buffer = [];
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this.written = 0;
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}
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_write(chunk, encoding, cb) {
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// Simulate a small unpredictable latency
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setTimeout(() => {
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this.buffer.push(chunk.toString());
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this.written += chunk.length;
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cb();
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}, Math.floor(Math.random() * 10));
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}
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}
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const chunks = new Array(50);
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for (let i = 0; i < chunks.length; i++) {
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chunks[i] = 'x'.repeat(i);
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}
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{
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// Verify fast writing
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const tw = new TestWriter({
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highWaterMark: 100
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});
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tw.on('finish', common.mustCall(function() {
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// Got chunks in the right order
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assert.deepStrictEqual(tw.buffer, chunks);
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}));
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chunks.forEach(function(chunk) {
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// Ignore backpressure. Just buffer it all up.
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tw.write(chunk);
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});
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tw.end();
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}
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{
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// Verify slow writing
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const tw = new TestWriter({
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highWaterMark: 100
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});
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tw.on('finish', common.mustCall(function() {
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// Got chunks in the right order
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assert.deepStrictEqual(tw.buffer, chunks);
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}));
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let i = 0;
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(function W() {
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tw.write(chunks[i++]);
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if (i < chunks.length)
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setTimeout(W, 10);
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else
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tw.end();
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})();
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}
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{
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// Verify write backpressure
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const tw = new TestWriter({
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highWaterMark: 50
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});
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let drains = 0;
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tw.on('finish', common.mustCall(function() {
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// Got chunks in the right order
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assert.deepStrictEqual(tw.buffer, chunks);
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assert.strictEqual(drains, 17);
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}));
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tw.on('drain', function() {
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drains++;
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});
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let i = 0;
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(function W() {
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let ret;
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do {
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ret = tw.write(chunks[i++]);
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} while (ret !== false && i < chunks.length);
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if (i < chunks.length) {
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assert(tw.writableLength >= 50);
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tw.once('drain', W);
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} else {
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tw.end();
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}
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})();
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}
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{
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// Verify write buffersize
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const tw = new TestWriter({
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highWaterMark: 100
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});
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const encodings =
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[ 'hex',
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'utf8',
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'utf-8',
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'ascii',
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'latin1',
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'binary',
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'base64',
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'ucs2',
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'ucs-2',
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'utf16le',
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'utf-16le',
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undefined ];
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tw.on('finish', function() {
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// Got the expected chunks
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assert.deepStrictEqual(tw.buffer, chunks);
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});
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chunks.forEach(function(chunk, i) {
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const enc = encodings[i % encodings.length];
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chunk = Buffer.from(chunk);
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tw.write(chunk.toString(enc), enc);
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});
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}
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{
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// Verify write with no buffersize
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const tw = new TestWriter({
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highWaterMark: 100,
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decodeStrings: false
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});
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tw._write = function(chunk, encoding, cb) {
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assert.strictEqual(typeof chunk, 'string');
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chunk = Buffer.from(chunk, encoding);
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return TestWriter.prototype._write.call(this, chunk, encoding, cb);
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};
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const encodings =
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[ 'hex',
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'utf8',
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'utf-8',
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'ascii',
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'latin1',
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'binary',
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'base64',
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'ucs2',
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'ucs-2',
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'utf16le',
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'utf-16le',
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undefined ];
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tw.on('finish', function() {
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// Got the expected chunks
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assert.deepStrictEqual(tw.buffer, chunks);
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});
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chunks.forEach(function(chunk, i) {
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const enc = encodings[i % encodings.length];
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chunk = Buffer.from(chunk);
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tw.write(chunk.toString(enc), enc);
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});
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}
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{
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// Verify write callbacks
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const callbacks = chunks.map(function(chunk, i) {
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return [i, function() {
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callbacks._called[i] = chunk;
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}];
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}).reduce(function(set, x) {
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set[`callback-${x[0]}`] = x[1];
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return set;
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}, {});
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callbacks._called = [];
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const tw = new TestWriter({
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highWaterMark: 100
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});
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tw.on('finish', common.mustCall(function() {
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process.nextTick(common.mustCall(function() {
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// Got chunks in the right order
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assert.deepStrictEqual(tw.buffer, chunks);
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// Called all callbacks
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assert.deepStrictEqual(callbacks._called, chunks);
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}));
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}));
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chunks.forEach(function(chunk, i) {
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tw.write(chunk, callbacks[`callback-${i}`]);
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});
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tw.end();
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}
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{
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// Verify end() callback
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const tw = new TestWriter();
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tw.end(common.mustCall());
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}
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const helloWorldBuffer = Buffer.from('hello world');
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{
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// Verify end() callback with chunk
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const tw = new TestWriter();
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tw.end(helloWorldBuffer, common.mustCall());
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}
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{
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// Verify end() callback with chunk and encoding
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const tw = new TestWriter();
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tw.end('hello world', 'ascii', common.mustCall());
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}
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{
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// Verify end() callback after write() call
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const tw = new TestWriter();
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tw.write(helloWorldBuffer);
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tw.end(common.mustCall());
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}
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{
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// Verify end() callback after write() callback
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const tw = new TestWriter();
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let writeCalledback = false;
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tw.write(helloWorldBuffer, function() {
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writeCalledback = true;
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});
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tw.end(common.mustCall(function() {
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assert.strictEqual(writeCalledback, true);
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}));
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}
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{
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// Verify encoding is ignored for buffers
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const tw = new W();
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const hex = '018b5e9a8f6236ffe30e31baf80d2cf6eb';
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tw._write = common.mustCall(function(chunk) {
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assert.strictEqual(chunk.toString('hex'), hex);
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});
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const buf = Buffer.from(hex, 'hex');
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tw.write(buf, 'latin1');
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}
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{
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// Verify writables cannot be piped
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const w = new W({ autoDestroy: false });
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w._write = common.mustNotCall();
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let gotError = false;
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w.on('error', function() {
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gotError = true;
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});
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w.pipe(process.stdout);
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assert.strictEqual(gotError, true);
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}
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{
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// Verify that duplex streams cannot be piped
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const d = new D();
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d._read = common.mustCall();
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d._write = common.mustNotCall();
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let gotError = false;
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d.on('error', function() {
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gotError = true;
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});
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d.pipe(process.stdout);
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assert.strictEqual(gotError, false);
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}
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{
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// Verify that end(chunk) twice is an error
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const w = new W();
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w._write = common.mustCall((msg) => {
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assert.strictEqual(msg.toString(), 'this is the end');
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});
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let gotError = false;
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w.on('error', function(er) {
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gotError = true;
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assert.strictEqual(er.message, 'write after end');
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});
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w.end('this is the end');
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w.end('and so is this');
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process.nextTick(common.mustCall(function() {
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assert.strictEqual(gotError, true);
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}));
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}
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{
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// Verify stream doesn't end while writing
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const w = new W();
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let wrote = false;
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w._write = function(chunk, e, cb) {
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assert.strictEqual(this.writing, undefined);
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wrote = true;
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this.writing = true;
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setTimeout(() => {
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this.writing = false;
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cb();
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}, 1);
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};
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w.on('finish', common.mustCall(function() {
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assert.strictEqual(wrote, true);
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assert.strictEqual(this.writing, false);
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}));
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w.write(Buffer.alloc(0));
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w.end();
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}
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{
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// Verify finish does not come before write() callback
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const w = new W();
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let writeCb = false;
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w._write = function(chunk, e, cb) {
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setTimeout(function() {
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writeCb = true;
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cb();
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}, 10);
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};
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w.on('finish', common.mustCall(function() {
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assert.strictEqual(writeCb, true);
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}));
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w.write(Buffer.alloc(0));
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w.end();
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}
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{
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// Verify finish does not come before synchronous _write() callback
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const w = new W();
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let writeCb = false;
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w._write = function(chunk, e, cb) {
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cb();
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};
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w.on('finish', common.mustCall(function() {
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assert.strictEqual(writeCb, true);
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}));
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w.write(Buffer.alloc(0), function() {
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writeCb = true;
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});
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w.end();
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}
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{
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// Verify finish is emitted if the last chunk is empty
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const w = new W();
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w._write = function(chunk, e, cb) {
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process.nextTick(cb);
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};
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w.on('finish', common.mustCall());
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w.write(Buffer.allocUnsafe(1));
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w.end(Buffer.alloc(0));
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}
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{
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// Verify that finish is emitted after shutdown
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const w = new W();
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let shutdown = false;
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w._final = common.mustCall(function(cb) {
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assert.strictEqual(this, w);
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setTimeout(function() {
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shutdown = true;
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cb();
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}, 100);
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});
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w._write = function(chunk, e, cb) {
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process.nextTick(cb);
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};
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w.on('finish', common.mustCall(function() {
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assert.strictEqual(shutdown, true);
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}));
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w.write(Buffer.allocUnsafe(1));
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w.end(Buffer.allocUnsafe(0));
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}
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{
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// Verify that error is only emitted once when failing in _finish.
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const w = new W();
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w._final = common.mustCall(function(cb) {
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cb(new Error('test'));
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});
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w.on('error', common.mustCall((err) => {
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assert.strictEqual(w._writableState.errorEmitted, true);
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assert.strictEqual(err.message, 'test');
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w.on('error', common.mustNotCall());
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w.destroy(new Error());
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}));
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w.end();
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}
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{
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// Verify that error is only emitted once when failing in write.
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const w = new W();
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w.on('error', common.mustNotCall());
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assert.throws(() => {
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w.write(null);
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}, {
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code: 'ERR_STREAM_NULL_VALUES'
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});
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}
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{
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// Verify that error is only emitted once when failing in write after end.
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const w = new W();
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w.on('error', common.mustCall((err) => {
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assert.strictEqual(w._writableState.errorEmitted, true);
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assert.strictEqual(err.code, 'ERR_STREAM_WRITE_AFTER_END');
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}));
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w.end();
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w.write('hello');
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w.destroy(new Error());
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}
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{
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// Verify that finish is not emitted after error
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const w = new W();
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w._final = common.mustCall(function(cb) {
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cb(new Error());
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});
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w._write = function(chunk, e, cb) {
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process.nextTick(cb);
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};
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w.on('error', common.mustCall());
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w.on('prefinish', common.mustNotCall());
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w.on('finish', common.mustNotCall());
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w.write(Buffer.allocUnsafe(1));
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w.end(Buffer.allocUnsafe(0));
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}
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