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-rw-r--r--tests/node_compat/test/parallel/test-stream2-push.js143
1 files changed, 143 insertions, 0 deletions
diff --git a/tests/node_compat/test/parallel/test-stream2-push.js b/tests/node_compat/test/parallel/test-stream2-push.js
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+++ b/tests/node_compat/test/parallel/test-stream2-push.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 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';
+require('../common');
+const assert = require('assert');
+const { Readable, Writable } = require('stream');
+
+const EE = require('events').EventEmitter;
+
+
+// A mock thing a bit like the net.Socket/tcp_wrap.handle interaction
+
+const stream = new Readable({
+ highWaterMark: 16,
+ encoding: 'utf8'
+});
+
+const source = new EE();
+
+stream._read = function() {
+ console.error('stream._read');
+ readStart();
+};
+
+let ended = false;
+stream.on('end', function() {
+ ended = true;
+});
+
+source.on('data', function(chunk) {
+ const ret = stream.push(chunk);
+ console.error('data', stream.readableLength);
+ if (!ret)
+ readStop();
+});
+
+source.on('end', function() {
+ stream.push(null);
+});
+
+let reading = false;
+
+function readStart() {
+ console.error('readStart');
+ reading = true;
+}
+
+function readStop() {
+ console.error('readStop');
+ reading = false;
+ process.nextTick(function() {
+ const r = stream.read();
+ if (r !== null)
+ writer.write(r);
+ });
+}
+
+const writer = new Writable({
+ decodeStrings: false
+});
+
+const written = [];
+
+const expectWritten =
+ [ 'asdfgasdfgasdfgasdfg',
+ 'asdfgasdfgasdfgasdfg',
+ 'asdfgasdfgasdfgasdfg',
+ 'asdfgasdfgasdfgasdfg',
+ 'asdfgasdfgasdfgasdfg',
+ 'asdfgasdfgasdfgasdfg' ];
+
+writer._write = function(chunk, encoding, cb) {
+ console.error(`WRITE ${chunk}`);
+ written.push(chunk);
+ process.nextTick(cb);
+};
+
+writer.on('finish', finish);
+
+
+// Now emit some chunks.
+
+const chunk = 'asdfg';
+
+let set = 0;
+readStart();
+data();
+function data() {
+ assert(reading);
+ source.emit('data', chunk);
+ assert(reading);
+ source.emit('data', chunk);
+ assert(reading);
+ source.emit('data', chunk);
+ assert(reading);
+ source.emit('data', chunk);
+ assert(!reading);
+ if (set++ < 5)
+ setTimeout(data, 10);
+ else
+ end();
+}
+
+function finish() {
+ console.error('finish');
+ assert.deepStrictEqual(written, expectWritten);
+ console.log('ok');
+}
+
+function end() {
+ source.emit('end');
+ assert(!reading);
+ writer.end(stream.read());
+ setImmediate(function() {
+ assert(ended);
+ });
+}