Verify a PDF has been opened in a new tab

[d-kowalski07]

Hi folks,

I've got a case that I can't seem to figure out.
Normally, if it was a link, I'd edit the href attribute to make sure it opens in the same window.
However, the way it works in the app I'm testing is:

• I press a download button (that doesn't have any href exposed)
• A graphQL call is made to retrieve a PDF url
• The PDF is not downloaded, only the url to it opened in a new tab

That's how it works in Chrome. Any ideas on how to verify the correct URL has been opened?
Thanks

[d-kowalski07]

Figured it out. The difficulty here was that I was working inside Storybook, so an iframe. Code example below if anyone finds this post in 15 years time.

cy.get('#your-iframe-locator').then(($iframe) => {
    const window = ($iframe[0] as HTMLIFrameElement).contentWindow as Window
    cy.stub(window, 'open').as('newWindow')
    cy.get('your-button-locator').click()
    cy.get('@newWindow').should('be.calledWith', 'your-url-here')
  })