52 lines
1.2 KiB
JavaScript
52 lines
1.2 KiB
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 readable = new stream.Readable({
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read: () => {}
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});
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const writables = [];
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for (let i = 0; i < 5; i++) {
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const target = new stream.Writable({
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write: common.mustCall((chunk, encoding, callback) => {
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target.output.push(chunk);
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callback();
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}, 1)
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});
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target.output = [];
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target.on('pipe', common.mustCall());
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readable.pipe(target);
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writables.push(target);
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}
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const input = Buffer.from([1, 2, 3, 4, 5]);
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readable.push(input);
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// The pipe() calls will postpone emission of the 'resume' event using nextTick,
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// so no data will be available to the writable streams until then.
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process.nextTick(common.mustCall(() => {
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for (const target of writables) {
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assert.deepStrictEqual(target.output, [input]);
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target.on('unpipe', common.mustCall());
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readable.unpipe(target);
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}
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readable.push('something else'); // This does not get through.
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readable.push(null);
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readable.resume(); // Make sure the 'end' event gets emitted.
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}));
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readable.on('end', common.mustCall(() => {
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for (const target of writables) {
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assert.deepStrictEqual(target.output, [input]);
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}
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}));
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