d795301025
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. The main tradeoff for this bit of code churn is that it gets the code base most of the way to being able to enable the no-unused-vars rule in eslint. (The non-tooling benefit is that it lessens cognitive load when reading tests as it is an immediate indication that none of the functions or properties in common.js will be used by the test.) PR-URL: https://github.com/nodejs/node/pull/4563 Reviewed-By: James M Snell <jasnell@gmail.com> Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
61 lines
1.3 KiB
JavaScript
61 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 stream.unshift(Buffer(0)) or
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// stream.unshift('') does not set state.reading=false.
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var Readable = require('stream').Readable;
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var r = new Readable();
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var nChunks = 10;
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var chunk = new Buffer(10);
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chunk.fill('x');
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r._read = function(n) {
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setTimeout(function() {
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r.push(--nChunks === 0 ? null : chunk);
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});
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};
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var readAll = false;
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var seen = [];
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r.on('readable', function() {
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var chunk;
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while (chunk = r.read()) {
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seen.push(chunk.toString());
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// simulate only reading a certain amount of the data,
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// and then putting the rest of the chunk back into the
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// stream, like a parser might do. We just fill it with
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// 'y' so that it's easy to see which bits were touched,
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// and which were not.
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var putBack = new Buffer(readAll ? 0 : 5);
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putBack.fill('y');
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readAll = !readAll;
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r.unshift(putBack);
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}
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});
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var expect =
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[ 'xxxxxxxxxx',
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'yyyyy',
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'xxxxxxxxxx',
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'yyyyy',
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'xxxxxxxxxx',
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'yyyyy',
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'xxxxxxxxxx',
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'yyyyy',
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'xxxxxxxxxx',
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'yyyyy',
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'xxxxxxxxxx',
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'yyyyy',
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'xxxxxxxxxx',
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'yyyyy',
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'xxxxxxxxxx',
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'yyyyy',
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'xxxxxxxxxx',
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'yyyyy' ];
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r.on('end', function() {
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assert.deepEqual(seen, expect);
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console.log('ok');
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});
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