61 строка
1.3 KiB
JavaScript
61 строка
1.3 KiB
JavaScript
var common = require('../common');
|
|
var assert = require('assert');
|
|
|
|
// This test verifies that stream.unshift(Buffer(0)) or
|
|
// stream.unshift('') does not set state.reading=false.
|
|
var Readable = require('stream').Readable;
|
|
|
|
var r = new Readable();
|
|
var nChunks = 10;
|
|
var chunk = new Buffer(10);
|
|
chunk.fill('x');
|
|
|
|
r._read = function(n) {
|
|
setTimeout(function() {
|
|
r.push(--nChunks === 0 ? null : chunk);
|
|
});
|
|
};
|
|
|
|
var readAll = false;
|
|
var seen = [];
|
|
r.on('readable', function() {
|
|
var chunk;
|
|
while (chunk = r.read()) {
|
|
seen.push(chunk.toString());
|
|
// simulate only reading a certain amount of the data,
|
|
// and then putting the rest of the chunk back into the
|
|
// stream, like a parser might do. We just fill it with
|
|
// 'y' so that it's easy to see which bits were touched,
|
|
// and which were not.
|
|
var putBack = new Buffer(readAll ? 0 : 5);
|
|
putBack.fill('y');
|
|
readAll = !readAll;
|
|
r.unshift(putBack);
|
|
}
|
|
});
|
|
|
|
var expect =
|
|
[ 'xxxxxxxxxx',
|
|
'yyyyy',
|
|
'xxxxxxxxxx',
|
|
'yyyyy',
|
|
'xxxxxxxxxx',
|
|
'yyyyy',
|
|
'xxxxxxxxxx',
|
|
'yyyyy',
|
|
'xxxxxxxxxx',
|
|
'yyyyy',
|
|
'xxxxxxxxxx',
|
|
'yyyyy',
|
|
'xxxxxxxxxx',
|
|
'yyyyy',
|
|
'xxxxxxxxxx',
|
|
'yyyyy',
|
|
'xxxxxxxxxx',
|
|
'yyyyy' ];
|
|
|
|
r.on('end', function() {
|
|
assert.deepEqual(seen, expect);
|
|
console.log('ok');
|
|
});
|