%PDF- <> %âãÏÓ endobj 2 0 obj <> endobj 3 0 obj <>/ExtGState<>/ProcSet[/PDF/Text/ImageB/ImageC/ImageI] >>/Annots[ 28 0 R 29 0 R] /MediaBox[ 0 0 595.5 842.25] /Contents 4 0 R/Group<>/Tabs/S>> endobj ºaâÚÎΞ-ÌE1ÍØÄ÷{òò2ÿ ÛÖ^ÔÀá TÎ{¦?§®¥kuµùÕ5sLOšuY>endobj 2 0 obj<>endobj 2 0 obj<>endobj 2 0 obj<>endobj 2 0 obj<> endobj 2 0 obj<>endobj 2 0 obj<>es 3 0 R>> endobj 2 0 obj<> ox[ 0.000000 0.000000 609.600000 935.600000]/Fi endobj 3 0 obj<> endobj 7 1 obj<>/ProcSet[/PDF/Text/ImageB/ImageC/ImageI]>>/Subtype/Form>> stream
'use strict'; const common = require('../common'); const assert = require('assert'); const { Readable } = require('stream'); const MAX = 42; const BATCH = 10; { const readable = new Readable({ objectMode: true, read: common.mustCall(function() { console.log('>> READ'); fetchData((err, data) => { if (err) { this.destroy(err); return; } if (data.length === 0) { console.log('pushing null'); this.push(null); return; } console.log('pushing'); data.forEach((d) => this.push(d)); }); }, Math.floor(MAX / BATCH) + 2) }); let i = 0; function fetchData(cb) { if (i > MAX) { setTimeout(cb, 10, null, []); } else { const array = []; const max = i + BATCH; for (; i < max; i++) { array.push(i); } setTimeout(cb, 10, null, array); } } readable.on('readable', () => { let data; console.log('readable emitted'); while ((data = readable.read()) !== null) { console.log(data); } }); readable.on('end', common.mustCall(() => { assert.strictEqual(i, (Math.floor(MAX / BATCH) + 1) * BATCH); })); } { const readable = new Readable({ objectMode: true, read: common.mustCall(function() { console.log('>> READ'); fetchData((err, data) => { if (err) { this.destroy(err); return; } if (data.length === 0) { console.log('pushing null'); this.push(null); return; } console.log('pushing'); data.forEach((d) => this.push(d)); }); }, Math.floor(MAX / BATCH) + 2) }); let i = 0; function fetchData(cb) { if (i > MAX) { setTimeout(cb, 10, null, []); } else { const array = []; const max = i + BATCH; for (; i < max; i++) { array.push(i); } setTimeout(cb, 10, null, array); } } readable.on('data', (data) => { console.log('data emitted', data); }); readable.on('end', common.mustCall(() => { assert.strictEqual(i, (Math.floor(MAX / BATCH) + 1) * BATCH); })); } { const readable = new Readable({ objectMode: true, read: common.mustCall(function() { console.log('>> READ'); fetchData((err, data) => { if (err) { this.destroy(err); return; } console.log('pushing'); data.forEach((d) => this.push(d)); if (data[BATCH - 1] >= MAX) { console.log('pushing null'); this.push(null); } }); }, Math.floor(MAX / BATCH) + 1) }); let i = 0; function fetchData(cb) { const array = []; const max = i + BATCH; for (; i < max; i++) { array.push(i); } setTimeout(cb, 10, null, array); } readable.on('data', (data) => { console.log('data emitted', data); }); readable.on('end', common.mustCall(() => { assert.strictEqual(i, (Math.floor(MAX / BATCH) + 1) * BATCH); })); } { const readable = new Readable({ objectMode: true, read: common.mustNotCall() }); readable.on('data', common.mustNotCall()); readable.push(null); let nextTickPassed = false; process.nextTick(() => { nextTickPassed = true; }); readable.on('end', common.mustCall(() => { assert.strictEqual(nextTickPassed, true); })); } { const readable = new Readable({ objectMode: true, read: common.mustCall() }); readable.on('data', (data) => { console.log('data emitted', data); }); readable.on('end', common.mustCall()); setImmediate(() => { readable.push('aaa'); readable.push(null); }); }