Preventing a JavaScript redirect to a 3rd-party site using intercept

[Undistraction]

I need to test an auth flow that involves a redirect to a third-party site. I have successfully used the following code to test the behaviour:

cy.intercept({ pathname: `/sessions/new` }).as(`loginRedirect`)

cy.visit(`/dashboard/`)

cy.location().then(($location) => {
  cy.wait(`@loginRedirect`).then(($interceptor) => {
    const { query } = urlParse($interceptor.request.url)
    expect(query).to.equal(`?token=true&redirect=${$location.href}`)
  })
})

However on our CI we are bumping into this issue: #4220. Given that I only need to test that the redirect happens, and I don't actually need the page to redirect, I could avoid this issue if there was a way to cancel the redirect behaviour.

Is there a way to cancel the redirect using intercept?

[Update] It seems that even this solution is unreliable, as it is possible for the redirect to happen in between cy.visit and cy.wait, meaning the test is left waiting for something that already happened.

[bahmutov]

See the redirect spec in this recipe cypress-io/cypress-example-recipes#598

(note that this is a PR to fix spying on the redirect call, it should be released in 6.1.0. Stubbing the redirect should work already in 6.0.1)

[Undistraction]

@bahmutov Thanks for this. It will be really helpful.