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streaming.net.XHRLoader.js
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streaming.net.XHRLoader.js
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import XHRLoader from '../../src/streaming/net/XHRLoader';
import RequestModifier from '../../src/streaming/utils/RequestModifier';
import { sleep } from './helpers/Async';
const expect = require('chai').expect;
const sinon = require('sinon');
const context = {};
let requestModifier;
let xhrLoader;
describe('XHRLoader', function () {
beforeEach(function () {
requestModifier = RequestModifier(context).getInstance();
});
beforeEach(function () {
global.XMLHttpRequest = sinon.useFakeXMLHttpRequest();
this.requests = [];
global.XMLHttpRequest.onCreate = function (xhr) {
this.requests.push(xhr);
}.bind(this);
});
afterEach(function () {
global.XMLHttpRequest.restore();
});
afterEach(function () {
});
it('should call success and complete callback when load is called successfully', async () => {
const self = this.ctx;
const callbackSucceeded = sinon.spy();
const callbackCompleted = sinon.spy();
const callbackError = sinon.spy();
const callbackAbort = sinon.spy();
xhrLoader = XHRLoader(context).create({
requestModifier: requestModifier
});
const request = {
request: {
checkExistenceOnly: true
},
onload: callbackSucceeded,
onend: callbackCompleted,
onerror: callbackError,
onabort: callbackAbort
};
xhrLoader.load(request);
await sleep(0);
expect(self.requests.length).to.equal(1);
self.requests[0].respond(200);
sinon.assert.notCalled(callbackError);
sinon.assert.calledOnce(callbackSucceeded);
sinon.assert.calledOnce(callbackCompleted);
sinon.assert.notCalled(callbackAbort);
expect(callbackSucceeded.calledBefore(callbackCompleted)).to.be.true; // jshint ignore:line
});
it('should call onload and complete callback when load is called and there is an error response', async () => {
const self = this.ctx;
const callbackSucceeded = sinon.spy();
const callbackCompleted = sinon.spy();
const callbackError = sinon.spy();
const callbackAbort = sinon.spy();
xhrLoader = XHRLoader(context).create({
requestModifier: requestModifier
});
const request = {
request: {
checkExistenceOnly: true
},
onload: callbackSucceeded,
onend: callbackCompleted,
onerror: callbackError,
onabort: callbackAbort
};
xhrLoader.load(request);
await sleep(0);
expect(self.requests.length).to.equal(1);
self.requests[0].respond(404);
sinon.assert.notCalled(callbackError);
sinon.assert.calledOnce(callbackCompleted);
sinon.assert.calledOnce(callbackSucceeded);
sinon.assert.notCalled(callbackAbort);
expect(callbackSucceeded.calledBefore(callbackCompleted)).to.be.true; // jshint ignore:line
});
it('should call onabort callback when abort is called', async () => {
const callbackSucceeded = sinon.spy();
const callbackCompleted = sinon.spy();
const callbackError = sinon.spy();
const callbackAbort = sinon.spy();
xhrLoader = XHRLoader(context).create({
requestModifier: requestModifier
});
const request = {
request: {
checkExistenceOnly: true
},
onload: callbackSucceeded,
onend: callbackCompleted,
onerror: callbackError,
onabort: callbackAbort
};
xhrLoader.load(request);
await sleep(0);
xhrLoader.abort(request);
sinon.assert.notCalled(callbackError);
sinon.assert.notCalled(callbackSucceeded);
// abort triggers both onloadend and onabort
sinon.assert.notCalled(callbackCompleted);
sinon.assert.calledOnce(callbackAbort);
});
it('should call onerror and onend when load is called and there is a network error', async () => {
const self = this.ctx;
const callbackSucceeded = sinon.spy();
const callbackCompleted = sinon.spy();
const callbackError = sinon.spy();
const callbackAbort = sinon.spy();
xhrLoader = XHRLoader(context).create({
requestModifier: requestModifier
});
const request = {
request: {
checkExistenceOnly: true
},
onload: callbackSucceeded,
onend: callbackCompleted,
onerror: callbackError,
onabort: callbackAbort
};
xhrLoader.load(request);
await sleep(0);
expect(self.requests.length).to.equal(1);
self.requests[0].error();
sinon.assert.calledOnce(callbackError);
sinon.assert.calledOnce(callbackCompleted);
sinon.assert.notCalled(callbackSucceeded);
sinon.assert.notCalled(callbackAbort);
expect(callbackError.calledBefore(callbackCompleted)).to.be.true; // jshint ignore:line
});
it('should set timeout on the sending XHR request', async () => {
xhrLoader = XHRLoader(context).create({
requestModifier: requestModifier
});
const request = {
request: {
checkExistenceOnly: true
},
timeout: 100
};
xhrLoader.load(request);
await sleep(0);
expect(request.response.timeout).to.be.equal(100);
});
});