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nodejs/test/parallel/test-stream-big-push.js
Roman Reiss f29762f4dd test: enable linting for tests
Enable linting for the test directory. A number of changes was made so
all tests conform the current rules used by lib and src directories. The
only exception for tests is that unreachable (dead) code is allowed.

test-fs-non-number-arguments-throw had to be excluded from the changes
because of a weird issue on Windows CI.

PR-URL: https://github.com/nodejs/io.js/pull/1721
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
2015-05-19 21:21:27 +02:00

65 lines
1.3 KiB
JavaScript

'use strict';
var common = require('../common');
var assert = require('assert');
var stream = require('stream');
var str = 'asdfasdfasdfasdfasdf';
var r = new stream.Readable({
highWaterMark: 5,
encoding: 'utf8'
});
var reads = 0;
var eofed = false;
var ended = false;
r._read = function(n) {
if (reads === 0) {
setTimeout(function() {
r.push(str);
});
reads++;
} else if (reads === 1) {
var ret = r.push(str);
assert.equal(ret, false);
reads++;
} else {
assert(!eofed);
eofed = true;
r.push(null);
}
};
r.on('end', function() {
ended = true;
});
// push some data in to start.
// we've never gotten any read event at this point.
var ret = r.push(str);
// should be false. > hwm
assert(!ret);
var chunk = r.read();
assert.equal(chunk, str);
chunk = r.read();
assert.equal(chunk, null);
r.once('readable', function() {
// this time, we'll get *all* the remaining data, because
// it's been added synchronously, as the read WOULD take
// us below the hwm, and so it triggered a _read() again,
// which synchronously added more, which we then return.
chunk = r.read();
assert.equal(chunk, str + str);
chunk = r.read();
assert.equal(chunk, null);
});
process.on('exit', function() {
assert(eofed);
assert(ended);
assert.equal(reads, 2);
console.log('ok');
});