271 lines
7.3 KiB
JavaScript
271 lines
7.3 KiB
JavaScript
var should = require('should'),
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needle = require('./../'),
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decoder = require('./../lib/decoder'),
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Q = require('q'),
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chardet = require('jschardet'),
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fs = require('fs'),
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http = require('http'),
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helpers = require('./helpers');
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describe('character encoding', function() {
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this.timeout(5000);
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function staticServerFor(file, content_type) {
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return http.createServer(function(req, res) {
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req.on('data', function(chunk) {})
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req.on('end', function() {
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// We used to pull from a particular site that is no longer up.
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// This is a local mirror pulled from archive.org
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// https://web.archive.org/web/20181003202907/http://www.nina.jp/server/slackware/webapp/tomcat_charset.html
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fs.readFile(file, function(err, data) {
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if (err) {
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res.writeHead(404);
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res.end(JSON.stringify(err));
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return;
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}
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res.writeHeader(200, { 'Content-Type': content_type })
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res.end(data);
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});
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})
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})
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}
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describe('Given content-type: "text/html; charset=EUC-JP"', function() {
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var server, port = 2233;
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before(function(done) {
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server = staticServerFor('test/files/tomcat_charset.html', 'text/html; charset=EUC-JP')
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server.listen(port, done)
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url = 'http://localhost:' + port;
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})
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after(function(done) {
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server.close(done)
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})
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describe('with decode = false', function() {
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it('does not decode', function(done) {
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needle.get(url, { decode: false }, function(err, resp) {
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resp.body.should.be.a.String;
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chardet.detect(resp.body).encoding.should.eql('windows-1252');
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resp.body.indexOf('EUCを使う').should.eql(-1);
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done();
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})
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})
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})
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describe('with decode = true', function() {
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it('decodes', function(done) {
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needle.get(url, { decode: true }, function(err, resp) {
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resp.body.should.be.a.String;
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chardet.detect(resp.body).encoding.should.eql('ascii');
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resp.body.indexOf('EUCを使う').should.not.eql(-1);
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done();
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})
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})
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})
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})
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describe('Given content-type: "text/html but file is charset: gb2312', function() {
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it('encodes to UTF-8', function(done) {
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// Our Needle wrapper that requests a chinese website.
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var task = Q.nbind(needle.get, needle, 'http://www.chinesetop100.com/');
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// Different instantiations of this task
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var tasks = [Q.fcall(task, {decode: true}),
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Q.fcall(task, {decode: false})];
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var results = tasks.map(function(task) {
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return task.then(function(obj) {
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return obj[0].body;
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});
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});
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// Execute all requests concurrently
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Q.all(results).done(function(bodies) {
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var charsets = [
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chardet.detect(bodies[0]).encoding,
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chardet.detect(bodies[1]).encoding,
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]
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// We wanted to decode our first stream as specified by options
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charsets[0].should.equal('ascii');
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bodies[0].indexOf('全球中文网站前二十强').should.not.equal(-1);
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// But not our second stream
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charsets[1].should.equal('windows-1252');
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bodies[1].indexOf('全球中文网站前二十强').should.equal(-1);
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done();
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});
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})
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})
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describe('Given content-type: text/html; charset=maccentraleurope', function() {
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var server, port = 2233;
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// from 'https://wayback.archive-it.org/3259/20160921140616/https://www.arc.gov/research/MapsofAppalachia.asp?MAP_ID=11';
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before(function(done) {
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server = staticServerFor('test/files/Appalachia.html', 'text/html; charset=maccentraleurope')
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server.listen(port, done)
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url = 'http://localhost:' + port;
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})
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after(function(done) {
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server.close(done)
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})
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describe('with decode = false', function() {
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it('does not decode', function(done) {
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needle.get(url, { decode: false }, function(err, resp) {
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resp.body.should.be.a.String;
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chardet.detect(resp.body).encoding.should.eql('ascii');
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done();
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})
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})
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})
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describe('with decode = true', function() {
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it('does not explode', function(done) {
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(function() {
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needle.get(url, { decode: true }, function(err, resp) {
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resp.body.should.be.a.String;
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chardet.detect(resp.body).encoding.should.eql('ascii');
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done();
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})
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}).should.not.throw();
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})
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})
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})
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describe('Given content-type: "text/html"', function () {
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var server,
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port = 54321,
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text = 'Magyarországi Fióktelepe'
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before(function(done) {
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server = helpers.server({
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port: port,
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response: text,
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headers: { 'Content-Type': 'text/html' }
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}, done);
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})
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after(function(done) {
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server.close(done)
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})
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describe('with decode = false', function () {
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it('decodes by default to utf-8', function (done) {
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needle.get('http://localhost:' + port, { decode: false }, function (err, resp) {
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resp.body.should.be.a.String;
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chardet.detect(resp.body).encoding.should.eql('ISO-8859-2');
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resp.body.should.eql('Magyarországi Fióktelepe')
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done();
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})
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})
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})
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})
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describe('multibyte characters split across chunks', function () {
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describe('with encoding = utf-8', function() {
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var d,
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result = Buffer.allocUnsafe(0);
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before(function(done) {
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d = decoder('utf-8');
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done();
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});
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it('reassembles split multibyte characters', function (done) {
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d.on("data", function(chunk){
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result = Buffer.concat([ result, chunk ]);
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});
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d.on("end", function(){
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result.toString("utf-8").should.eql('慶');
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done();
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});
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// write '慶' in utf-8 split across chunks
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d.write(Buffer.from([0xE6]));
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d.write(Buffer.from([0x85]));
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d.write(Buffer.from([0xB6]));
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d.end();
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})
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})
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describe('with encoding = euc-jp', function() {
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var d,
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result = Buffer.allocUnsafe(0);
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before(function(done) {
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d = decoder('euc-jp');
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done();
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});
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it('reassembles split multibyte characters', function (done) {
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d.on("data", function(chunk){
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result = Buffer.concat([ result, chunk ]);
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});
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d.on("end", function(){
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result.toString("utf-8").should.eql('慶');
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done();
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});
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// write '慶' in euc-jp split across chunks
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d.write(Buffer.from([0xB7]));
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d.write(Buffer.from([0xC4]));
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d.end();
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})
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})
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describe('with encoding = gb18030', function() {
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var d,
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result = Buffer.allocUnsafe(0);
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before(function(done) {
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d = decoder('gb18030');
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done();
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});
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it('reassembles split multibyte characters', function (done) {
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d.on("data", function(chunk){
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result = Buffer.concat([ result, chunk ]);
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});
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d.on("end", function(){
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result.toString("utf-8").should.eql('慶');
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done();
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});
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// write '慶' in gb18030 split across chunks
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d.write(Buffer.from([0x91]));
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d.write(Buffer.from([0x63]));
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d.end();
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})
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})
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})
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})
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