be34b629deMake use of Arrow function.
Add a small test and this file's coverage is 100%.
a647d82f83/lib/_stream_duplex.js (L25)
Coverage: https://coverage.nodejs.org/coverage-067be658f966dafe/root/_stream_duplex.js.html
PR-URL: https://github.com/nodejs/node/pull/10963
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Italo A. Casas <me@italoacasas.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Michael Dawson <michael_dawson@ca.ibm.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Matteo Collina <matteo.collina@gmail.com>
32 lines
601 B
JavaScript
32 lines
601 B
JavaScript
'use strict';
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require('../common');
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const assert = require('assert');
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const Duplex = require('stream').Transform;
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const stream = new Duplex({ objectMode: true });
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assert(Duplex() instanceof Duplex);
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assert(stream._readableState.objectMode);
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assert(stream._writableState.objectMode);
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let written;
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let read;
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stream._write = (obj, _, cb) => {
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written = obj;
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cb();
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};
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stream._read = () => {};
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stream.on('data', (obj) => {
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read = obj;
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});
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stream.push({ val: 1 });
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stream.end({ val: 2 });
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process.on('exit', () => {
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assert.strictEqual(read.val, 1);
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assert.strictEqual(written.val, 2);
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});
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