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37 lines
1.1 KiB
JavaScript
37 lines
1.1 KiB
JavaScript
// deno-fmt-ignore-file
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// deno-lint-ignore-file
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// Copyright Joyent and Node contributors. All rights reserved. MIT license.
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// Taken from Node 18.12.1
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// This file is automatically generated by `tools/node_compat/setup.ts`. Do not modify this file manually.
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'use strict';
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const common = require('../common');
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// This test ensures that Readable stream will call _read() for streams
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// with highWaterMark === 0 upon .read(0) instead of just trying to
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// emit 'readable' event.
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const assert = require('assert');
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const { Readable } = require('stream');
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const r = new Readable({
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// Must be called only once upon setting 'readable' listener
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read: common.mustCall(),
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highWaterMark: 0,
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});
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let pushedNull = false;
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// This will trigger read(0) but must only be called after push(null)
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// because the we haven't pushed any data
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r.on('readable', common.mustCall(() => {
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assert.strictEqual(r.read(), null);
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assert.strictEqual(pushedNull, true);
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}));
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r.on('end', common.mustCall());
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process.nextTick(() => {
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assert.strictEqual(r.read(), null);
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pushedNull = true;
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r.push(null);
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});
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