rollbar/test/browser.telemetry.test.js

Effortlessly track and debug errors in your JavaScript applications with Rollbar. This package includes advanced error tracking features and an intuitive interface to help you identify and fix issues more quickly.

/* globals expect */
/* globals describe */
/* globals it */
/* globals sinon */

import Instrumenter from '../src/browser/telemetry.js';

describe('instrumentNetwork', function () {
  it('should capture XHR requests with string URL', function (done) {
    var callback = sinon.spy();
    var windowMock = {
      XMLHttpRequest: function () {},
    };

    windowMock.XMLHttpRequest.prototype.open = function () {};
    windowMock.XMLHttpRequest.prototype.send = function () {};

    var i = createInstrumenter(callback, windowMock);
    i.instrumentNetwork();

    var xhr = new windowMock.XMLHttpRequest();
    xhr.open('GET', 'http://first.call');
    xhr.send();
    xhr.onreadystatechange();

    expect(callback.callCount).to.eql(1);
    expect(callback.args[0][0].url).to.eql('http://first.call');

    i.deinstrumentNetwork();
    i = createInstrumenter(callback, windowMock);
    i.instrumentNetwork();
    var xhr = new windowMock.XMLHttpRequest();
    xhr.open('GET', new URL('http://second.call'));
    xhr.send();
    xhr.onreadystatechange();
    expect(callback.callCount).to.eql(2);
    expect(callback.args[1][0].url).to.eql('http://second.call/');

    done();
  });

  it('should capture XHR requests with string URL', function (done) {
    var callback = sinon.spy();
    var windowMock = {
      fetch: function () {
        return Promise.resolve();
      },
    };

    var i = createInstrumenter(callback, windowMock);
    i.instrumentNetwork();

    windowMock.fetch('http://first.call');
    expect(callback.callCount).to.eql(1);
    expect(callback.args[0][0].url).to.eql('http://first.call');

    i.deinstrumentNetwork();
    i = createInstrumenter(callback, windowMock);
    i.instrumentNetwork();

    windowMock.fetch(new URL('http://second.call'));
    expect(callback.callCount).to.eql(2);
    expect(callback.args[1][0].url).to.eql('http://second.call/');

    done();
  });
});

function createInstrumenter(callback, windowMock) {
  return new Instrumenter(
    { scrubFields: [] },
    { captureNetwork: callback },
    { wrap: function () {}, client: { notifier: { diagnostic: {} } } },
    windowMock,
  );
}