deno.land / std@0.166.0 / node / _tools / test / parallel / test-stream-transform-final-sync.js
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// Copyright Joyent and Node contributors. All rights reserved. MIT license.// Taken from Node 18.12.0// This file is automatically generated by "node/_tools/setup.ts". Do not modify this file manually
'use strict';const common = require('../common');const assert = require('assert');
const stream = require('stream');let state = 0;
// What you do//// const stream = new stream.Transform({// transform: function transformCallback(chunk, _, next) {// // part 1// this.push(chunk);// //part 2// next();// },// final: function endCallback(done) {// // part 1// process.nextTick(function () {// // part 2// done();// });// },// flush: function flushCallback(done) {// // part 1// process.nextTick(function () {// // part 2// done();// });// }// });// t.on('data', dataListener);// t.on('end', endListener);// t.on('finish', finishListener);// t.write(1);// t.write(4);// t.end(7, endMethodCallback);//// The order things are called//// 1. transformCallback part 1// 2. dataListener// 3. transformCallback part 2// 4. transformCallback part 1// 5. dataListener// 6. transformCallback part 2// 7. transformCallback part 1// 8. dataListener// 9. transformCallback part 2// 10. finalCallback part 1// 11. finalCallback part 2// 12. flushCallback part 1// 13. finishListener// 14. endMethodCallback// 15. flushCallback part 2// 16. endListener
const t = new stream.Transform({ objectMode: true, transform: common.mustCall(function(chunk, _, next) { // transformCallback part 1 assert.strictEqual(++state, chunk); this.push(state); // transformCallback part 2 assert.strictEqual(++state, chunk + 2); process.nextTick(next); }, 3), final: common.mustCall(function(done) { state++; // finalCallback part 1 assert.strictEqual(state, 10); state++; // finalCallback part 2 assert.strictEqual(state, 11); done(); }, 1), flush: common.mustCall(function(done) { state++; // fluchCallback part 1 assert.strictEqual(state, 12); process.nextTick(function() { state++; // fluchCallback part 2 assert.strictEqual(state, 13); done(); }); }, 1)});t.on('finish', common.mustCall(function() { state++; // finishListener assert.strictEqual(state, 15);}, 1));t.on('end', common.mustCall(function() { state++; // endEvent assert.strictEqual(state, 16);}, 1));t.on('data', common.mustCall(function(d) { // dataListener assert.strictEqual(++state, d + 1);}, 3));t.write(1);t.write(4);t.end(7, common.mustCall(function() { state++; // endMethodCallback assert.strictEqual(state, 14);}, 1));
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