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common.js needs to be loaded in all tests so that there is checking for variable leaks and possibly other things. However, it does not need to be assigned to a variable if nothing in common.js is referred to elsewhere in the test. PR-URL: https://github.com/nodejs/node/pull/4408 Reviewed-By: James M Snell <jasnell@gmail.com>
57 lines
1.3 KiB
JavaScript
57 lines
1.3 KiB
JavaScript
'use strict';
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require('../common');
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var 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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var 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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var stream = new Readable({ highWaterMark: 2 });
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var reads = 0;
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var 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(new Buffer(size));
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};
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var depth = 0;
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function flow(stream, size, callback) {
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depth += 1;
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var 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.equal(reads, 2);
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// we pushed up the high water mark
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assert.equal(stream._readableState.highWaterMark, 8192);
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// length is 0 right now, because we pulled it all out.
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assert.equal(stream._readableState.length, 0);
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assert(!code);
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assert.equal(depth, 0);
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console.log('ok');
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});
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