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98e54b0bd4
A prior io.js era commit inappropriately removed the original copyright statements from the source. This restores those in any files still remaining from that edit. Ref: https://github.com/nodejs/TSC/issues/174 Ref: https://github.com/nodejs/node/pull/10599 PR-URL: https://github.com/nodejs/node/pull/10155 Note: This PR was required, reviewed-by and approved by the Node.js Foundation Legal Committee and the TSC. There is no `Approved-By:` meta data.
78 lines
2.5 KiB
JavaScript
78 lines
2.5 KiB
JavaScript
// Copyright Joyent, Inc. and other Node contributors.
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//
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// Permission is hereby granted, free of charge, to any person obtaining a
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// copy of this software and associated documentation files (the
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// "Software"), to deal in the Software without restriction, including
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// without limitation the rights to use, copy, modify, merge, publish,
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// distribute, sublicense, and/or sell copies of the Software, and to permit
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// persons to whom the Software is furnished to do so, subject to the
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// following conditions:
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//
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// The above copyright notice and this permission notice shall be included
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// in all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
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// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
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// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
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// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
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// USE OR OTHER DEALINGS IN THE SOFTWARE.
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'use strict';
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require('../common');
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const assert = require('assert');
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// this test verifies that passing a huge number to read(size)
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// will push up the highWaterMark, and cause the stream to read
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// more data continuously, but without triggering a nextTick
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// warning or RangeError.
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const Readable = require('stream').Readable;
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// throw an error if we trigger a nextTick warning.
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process.throwDeprecation = true;
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const stream = new Readable({ highWaterMark: 2 });
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let reads = 0;
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let total = 5000;
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stream._read = function(size) {
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reads++;
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size = Math.min(size, total);
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total -= size;
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if (size === 0)
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stream.push(null);
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else
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stream.push(Buffer.allocUnsafe(size));
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};
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let depth = 0;
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function flow(stream, size, callback) {
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depth += 1;
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const chunk = stream.read(size);
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if (!chunk)
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stream.once('readable', flow.bind(null, stream, size, callback));
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else
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callback(chunk);
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depth -= 1;
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console.log('flow(' + depth + '): exit');
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}
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flow(stream, 5000, function() {
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console.log('complete (' + depth + ')');
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});
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process.on('exit', function(code) {
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assert.strictEqual(reads, 2);
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// we pushed up the high water mark
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assert.strictEqual(stream._readableState.highWaterMark, 8192);
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// length is 0 right now, because we pulled it all out.
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assert.strictEqual(stream._readableState.length, 0);
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assert(!code);
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assert.strictEqual(depth, 0);
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console.log('ok');
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});
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