Use cypress on application bigger that 4000px wide

[digiink]

Current behavior:

I have a application which is displayed across multiple screens which is bigger that the max screen size of 400px wide

cy.viewport(7680, 1601);

Error:
CypressError: cy.viewport() width and height must be between 20px and 4000px.

Desired behavior:

The max cy.viewport() width and height increased to 8000px.

Steps to reproduce: (app code and test code)

cy.viewport(7680, 1601);

https://github.com/digiink/cypress-test-tiny

Versions

Cypress package version: 3.6.1
Cypress binary version: 3.6.1
Mac OS 10.14
Chrome 78

[jennifer-shehane]

Here is the previous PR that upped the max value: #5189

[gabbersepp]

Is there a valid reason for the limits?

[digiink]

No valid reason, I feel that the max should be set in the config with a default lower limit set in the code but this is outside my ability in this codebase at the moment.

[flotwig]

Is there a valid reason for the limits?

I think the intention is to prevent users from accidentally setting something unreasonably huge and crashing/freezing the browser. I do not think there is a practical reason outside of that.

Instead of adding more config options, I'm in favor of just removing the limitation. In the year 2022, people are probably gonna be using Cypress with 16k res screens, so I think we should just save the time now and remove the restriction, or set it to something that is clearly infeasible (like 100k or 1 million).

[flotwig]

As a workaround, you can suppress this error by using cy.stub to stub out the Cypress error function.

Add the following to your specs or to your support file:

beforeEach(() => {
  cy.stub(Cypress.utils, "throwErrByPath")
  .callThrough() // still throw other types of errors
  .withArgs("viewport.dimensions_out_of_range").returns() // suppress invalid value errors
})

[cypress-bot]

The code for this is done in cypress-io/cypress#5882, but has yet to be released.
We'll update this issue and reference the changelog when it's released.

[flotwig]

Created an issue to remove/vastly increase the limits: #5892

[cypress-bot]

Released in 3.8.0.