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'use strict'; const common = require('../common'); const assert = require('assert'); const { Readable, Writable } = require('stream'); // This test ensures that if have 'readable' listener // on Readable instance it will not disrupt the pipe. { let receivedData = ''; const w = new Writable({ write: (chunk, env, callback) => { receivedData += chunk; callback(); }, }); const data = ['foo', 'bar', 'baz']; const r = new Readable({ read: () => {}, }); r.once('readable', common.mustCall()); r.pipe(w); r.push(data[0]); r.push(data[1]); r.push(data[2]); r.push(null); w.on('finish', common.mustCall(() => { assert.strictEqual(receivedData, data.join('')); })); } { let receivedData = ''; const w = new Writable({ write: (chunk, env, callback) => { receivedData += chunk; callback(); }, }); const data = ['foo', 'bar', 'baz']; const r = new Readable({ read: () => {}, }); r.pipe(w); r.push(data[0]); r.push(data[1]); r.push(data[2]); r.push(null); r.once('readable', common.mustCall()); w.on('finish', common.mustCall(() => { assert.strictEqual(receivedData, data.join('')); })); }