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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 18.12.1
+// This file is automatically generated by `tools/node_compat/setup.ts`. Do not modify this file manually.
+
+// Copyright Joyent, Inc. and other Node contributors.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a
+// copy of this software and associated documentation files (the
+// "Software"), to deal in the Software without restriction, including
+// without limitation the rights to use, copy, modify, merge, publish,
+// distribute, sublicense, and/or sell copies of the Software, and to permit
+// persons to whom the Software is furnished to do so, subject to the
+// following conditions:
+//
+// The above copyright notice and this permission notice shall be included
+// in all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
+// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
+// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
+// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
+// USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+'use strict';
+const {
+ isWindows,
+ mustCall,
+ mustCallAtLeast,
+} = require('../common');
+const assert = require('assert');
+const os = require('os');
+const spawn = require('child_process').spawn;
+const debug = require('util').debuglog('test');
+
+// We're trying to reproduce:
+// $ echo "hello\nnode\nand\nworld" | grep o | sed s/o/a/
+
+let grep, sed, echo;
+
+if (isWindows) {
+ grep = spawn('grep', ['--binary', 'o']);
+ sed = spawn('sed', ['--binary', 's/o/O/']);
+ echo = spawn('cmd.exe',
+ ['/c', 'echo', 'hello&&', 'echo',
+ 'node&&', 'echo', 'and&&', 'echo', 'world']);
+} else {
+ grep = spawn('grep', ['o']);
+ sed = spawn('sed', ['s/o/O/']);
+ echo = spawn('echo', ['hello\nnode\nand\nworld\n']);
+}
+
+// If the spawn function leaks file descriptors to subprocesses, grep and sed
+// hang.
+// This happens when calling pipe(2) and then forgetting to set the
+// FD_CLOEXEC flag on the resulting file descriptors.
+//
+// This test checks child processes exit, meaning they don't hang like
+// explained above.
+
+
+// pipe echo | grep
+echo.stdout.on('data', mustCallAtLeast((data) => {
+ debug(`grep stdin write ${data.length}`);
+ if (!grep.stdin.write(data)) {
+ echo.stdout.pause();
+ }
+}));
+
+// TODO(@jasnell): This does not appear to ever be
+// emitted. It's not clear if it is necessary.
+grep.stdin.on('drain', (data) => {
+ echo.stdout.resume();
+});
+
+// Propagate end from echo to grep
+echo.stdout.on('end', mustCall((code) => {
+ grep.stdin.end();
+}));
+
+echo.on('exit', mustCall(() => {
+ debug('echo exit');
+}));
+
+grep.on('exit', mustCall(() => {
+ debug('grep exit');
+}));
+
+sed.on('exit', mustCall(() => {
+ debug('sed exit');
+}));
+
+
+// pipe grep | sed
+grep.stdout.on('data', mustCallAtLeast((data) => {
+ debug(`grep stdout ${data.length}`);
+ if (!sed.stdin.write(data)) {
+ grep.stdout.pause();
+ }
+}));
+
+// TODO(@jasnell): This does not appear to ever be
+// emitted. It's not clear if it is necessary.
+sed.stdin.on('drain', (data) => {
+ grep.stdout.resume();
+});
+
+// Propagate end from grep to sed
+grep.stdout.on('end', mustCall((code) => {
+ debug('grep stdout end');
+ sed.stdin.end();
+}));
+
+
+let result = '';
+
+// print sed's output
+sed.stdout.on('data', mustCallAtLeast((data) => {
+ result += data.toString('utf8', 0, data.length);
+ debug(data);
+}));
+
+sed.stdout.on('end', mustCall((code) => {
+ assert.strictEqual(result, `hellO${os.EOL}nOde${os.EOL}wOrld${os.EOL}`);
+}));