Support mocking of iframe document response

[olofd]

With cy.route it seems like document responses (GET-document requests) can not be mocked/replaced with fixture.

The use case is for having an foreign iframe embedded on our site and wanting to test our interaction with that iframe. But I can not reliably run the foreign iframe document in our tests.

It would be nice if (at least for relative paths, aka own domain) these responses could me mocked in cypress. If that's already possible with cy.route, please let me know.

[chrisbreiding]

Currently, cy.route can only mock XHR requests, but we plan to add broader support for mocking any type of request in the future.

[cypress-bot]

Released in 5.1.0.

This comment thread has been locked. If you are still experiencing this issue after upgrading to
Cypress v5.1.0, please open a new issue.

[jennifer-shehane]

The features requested in this issue are now possible as part of cy.route2().

cy.route2() is currently experimental and requires being enabled by passing "experimentalNetworkStubbing": true through your Cypress configuration. This will eventually be merged in as part of our standard API.

Please see the cy.route2() docs for full details: https://on.cypress.io/route2

If you encounter any issues or unexpected behavior while using cy.route2() we encourage you to open a new issue so that we can work out all the issues before public release. Thanks!