Support for EventSource

I would like to see the EventSource support because we use it extensively in our app.

Current behavior:

cy.route doesn’t identify EventSource requests and there is no way to watch them reliably now.

Desired behavior:

Either cy.route should support it or we should have another API for EventSource.

[orjandesmet]

I’ve come up with a solution to mock EventSources in a Cypress test: You can use a package similar to https://github.com/gcedo/eventsourcemock

In your main file of your application, you can then add:

import EventSource, { sources } from 'eventsourcemock';

if (window['Cypress']) {
  // Add mocked EventSources to Cypress run
  Object.defineProperty(window, 'EventSource', { value: EventSource });
  Object.defineProperty(window, 'mockEventSources', { value: sources });
}

And in your test, you can use:

cy.window().its('mockEventSources' as any).then(mockEventSources => {
  cy.readFile('cypress/fixtures/<your fixture here>').then(fixture => {
    mockEventSources['<your name here>'].emit(
      messageEvent.type,
      messageEvent
    );
  });
});

I hope this helps some people.

EDIT If you don’t want to add to your application’s main file, you can also use the solution from #2349

[sashashakun]

Same problem here:)