errorHandling.test.js
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/*jshint expr:true */
'use strict';
const Crawler = require('../lib/crawler');
const expect = require('chai').expect;
const jsdom = require('jsdom');
// settings for nock to mock http server
const nock = require('nock');
describe('Errors', function() {
before(function() {
nock.cleanAll();
nock('http://test.crawler.com').get('/delay/1').delay(1000).reply(200, 'ok').persist();
nock('http://test.crawler.com').get('/status/400').reply(400, 'Bad Request').persist();
nock('http://test.crawler.com').get('/status/401').reply(401, 'Unauthorized').persist();
nock('http://test.crawler.com').get('/status/403').reply(403, 'Forbidden').persist();
nock('http://test.crawler.com').get('/status/404').reply(404, 'Not Found').persist();
nock('http://test.crawler.com').get('/status/500').reply(500, 'Internal Error').persist();
nock('http://test.crawler.com').get('/status/204').reply(204, '').persist();
});
describe('timeout', function() {
const crawler = new Crawler({
timeout: 500,
retryTimeout: 1000,
retries: 2,
jquery: false
});
it('should retry after timeout', function(finishTest) {
this.timeout(10000);
let options = {
uri: 'http://test.crawler.com/delay/1',
callback: (error, response, done) => {
expect(error).to.exist;
expect(response.options.retries).to.equal(0);
done();
finishTest();
}
};
crawler.queue(options);
expect(options.retries).to.equal(2);
});
it('should return a timeout error after ~2sec', function(finishTest) {
this.timeout(10000);
crawler.queue({
uri: 'http://test.crawler.com/delay/1',
callback: (error, response, done) => {
expect(error).to.exist;
expect(error.code === 'ETIMEDOUT' || error.code === 'ESOCKETTIMEDOUT').to.be.true;
done();
finishTest();
}
});
});
});
describe('error status code', function() {
const crawler = new Crawler({ jQuery : false });
it('should not return an error on status code 400 (Bad Request)', function(finishTest) {
crawler.queue({
uri: 'http://test.crawler.com/status/400',
callback: (error, response, done) => {
expect(error).to.be.null;
expect(response.statusCode).to.equal(400);
done();
finishTest();
}
});
});
it('should not return an error on status code 401 (Unauthorized)', function(finishTest) {
crawler.queue({
uri: 'http://test.crawler.com/status/401',
callback: (error, response, done) => {
expect(error).to.be.null;
expect(response.statusCode).to.equal(401);
done();
finishTest();
}
});
});
it('should not return an error on status code 403 (Forbidden)', function(finishTest) {
crawler.queue({
uri: 'http://test.crawler.com/status/403',
callback: (error, response, done) => {
expect(error).to.be.null;
expect(response.statusCode).to.equal(403);
done();
finishTest();
}
});
});
it('should not return an error on a 404', function(finishTest) {
crawler.queue({
uri : 'http://test.crawler.com/status/404',
callback : (error, response, done) => {
expect(error).to.be.null;
expect(response.statusCode).to.equal(404);
done();
finishTest();
}
});
});
it('should not return an error on a 500', function(finishTest) {
crawler.queue({
uri : 'http://test.crawler.com/status/500',
callback : (error, response, done) => {
expect(error).to.be.null;
expect(response.statusCode).to.equal(500);
done();
finishTest();
}
});
});
it('should not failed on empty response', function(finishTest) {
crawler.queue({
uri : 'http://test.crawler.com/status/204',
callback : (error, response, done) => {
expect(error).to.be.null;
done();
finishTest();
}
});
});
it('should not failed on a malformed html if jquery is false', function(finishTest) {
crawler.queue({
html : '<html><p>hello <div>dude</p></html>',
callback : (error, response, done) => {
expect(error).to.be.null;
expect(response).not.to.be.null;
done();
finishTest();
}
});
});
it('should not return an error on a malformed html if jQuery is jsdom', function(finishTest) {
crawler.queue({
html : '<html><p>hello <div>dude</p></html>',
jQuery : jsdom,
callback : (error, response, done) => {
expect(error).to.be.null;
expect(response).not.to.be.undefined;
done();
finishTest();
}
});
});
});
});