37 lines
1009 B
JavaScript
37 lines
1009 B
JavaScript
'use strict';
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const common = require('../common');
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const stream = require('stream');
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const assert = require('assert');
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const writable = new stream.Writable({
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write: common.mustCall(function(chunk, encoding, cb) {
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assert.strictEqual(
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readable._readableState.awaitDrainWriters,
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null,
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);
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if (chunk.length === 32 * 1024) { // first chunk
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readable.push(Buffer.alloc(34 * 1024)); // above hwm
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// We should check if awaitDrain counter is increased in the next
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// tick, because awaitDrain is incremented after this method finished
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process.nextTick(() => {
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assert.strictEqual(readable._readableState.awaitDrainWriters, writable);
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});
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}
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cb();
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}, 3)
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});
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// A readable stream which produces two buffers.
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const bufs = [Buffer.alloc(32 * 1024), Buffer.alloc(33 * 1024)]; // above hwm
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const readable = new stream.Readable({
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read: function() {
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while (bufs.length > 0) {
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this.push(bufs.shift());
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}
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}
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});
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readable.pipe(writable);
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