dotfiles/.vscode/extensions/saviorisdead.RustyCode-0.18.0/node_modules/stream-consume/test/tests.js

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2016-09-11 09:29:13 +01:00
/*jshint node:true */
/*global describe:false, it:false */
"use strict";
var consume = require('../');
var Stream = require('stream');
var Readable = Stream.Readable;
var Writable = Stream.Writable;
var Duplex = Stream.Duplex;
var should = require('should');
var through = require('through2');
require('mocha');
describe('stream-consume', function() {
it('should cause a Readable stream to complete if it\'s not piped anywhere', function(done) {
var rs = new Readable({highWaterMark: 2});
var a = 0;
var ended = false;
rs._read = function() {
if (a++ < 100) {
rs.push(a + "");
} else {
ended = true;
rs.push(null);
}
};
rs.on("end", function() {
a.should.be.above(99);
ended.should.be.true;
done();
});
consume(rs);
});
it('should work with Readable streams in objectMode', function(done) {
var rs = new Readable({highWaterMark: 2, objectMode: true});
var a = 0;
var ended = false;
rs._read = function() {
if (a++ < 100) {
rs.push(a);
} else {
ended = true;
rs.push(null);
}
};
rs.on("end", function() {
a.should.be.above(99);
ended.should.be.true;
done();
});
consume(rs);
});
it('should not interfere with a Readable stream that is piped somewhere', function(done) {
var rs = new Readable({highWaterMark: 2});
var a = 0;
var ended = false;
rs._read = function() {
if (a++ < 100) {
rs.push(".");
} else {
ended = true;
rs.push(null);
}
};
var sizeRead = 0;
var ws = new Writable({highWaterMark: 2});
ws._write = function(chunk, enc, next) {
sizeRead += chunk.length;
next();
}
ws.on("finish", function() {
a.should.be.above(99);
ended.should.be.true;
sizeRead.should.equal(100);
done();
});
rs.pipe(ws);
consume(rs);
});
it('should not interfere with a Writable stream', function(done) {
var rs = new Readable({highWaterMark: 2});
var a = 0;
var ended = false;
rs._read = function() {
if (a++ < 100) {
rs.push(".");
} else {
ended = true;
rs.push(null);
}
};
var sizeRead = 0;
var ws = new Writable({highWaterMark: 2});
ws._write = function(chunk, enc, next) {
sizeRead += chunk.length;
next();
}
ws.on("finish", function() {
a.should.be.above(99);
ended.should.be.true;
sizeRead.should.equal(100);
done();
});
rs.pipe(ws);
consume(ws);
});
it('should handle a Transform stream', function(done) {
var rs = new Readable({highWaterMark: 2});
var a = 0;
var ended = false;
rs._read = function() {
if (a++ < 100) {
rs.push(".");
} else {
ended = true;
rs.push(null);
}
};
var sizeRead = 0;
var flushed = false;
var ts = through({highWaterMark: 2}, function(chunk, enc, cb) {
sizeRead += chunk.length;
this.push(chunk);
cb();
}, function(cb) {
flushed = true;
cb();
});
ts.on("end", function() {
a.should.be.above(99);
ended.should.be.true;
sizeRead.should.equal(100);
flushed.should.be.true;
done();
});
rs.pipe(ts);
consume(ts);
});
it('should handle a classic stream', function(done) {
var rs = new Stream();
var ended = false;
var i;
rs.on("end", function() {
ended.should.be.true;
done();
});
consume(rs);
for (i = 0; i < 100; i++) {
rs.emit("data", i);
}
ended = true;
rs.emit("end");
});
});