Controlling a Stripe payent popup with Cypress.io

some_test.js

// for this to work you need to set `"chromeWebSecurity": false` in cypress.json

describe('Make Stripe Payment', function() {
  before(function() {
    cy.visit('http://localhost:3000/en/stripe/checkout/')
    Cypress.Cookies.preserveOnce('sessionid')
  })

  it('should enter credit card details and finalise payment', function() {
    cy.get('[data-test="button-FormStripeCart-PayWithCreditCard"]').click()
    // there are better ways to get the iFrame in a promise, I think, and there is
    // a new API coming up soon to deal with iFrames, but I was lazy and just put a
    // wait here - 6secs is usually enough to let the Stripe popup load fully
    cy.wait(6000)
    cy.get('iframe').then($iframe => {
      const doc = $iframe.contents()
      let input = doc.find('input')[0]
      // super weird stuff here, if you just input '4242424242424242', the value
      // that you end up seing in the input element is jumbled up a little,
      // probably because of the way how Stripe inserts spaces while you are
      // typing. By luck I found out that this issue can get worked around if
      // you just chain-call type()
      cy
        .wrap(input)
        .type('4242')
        .type('4242')
        .type('4242')
        .type('4242')
      input = doc.find('input')[1]
      cy
        .wrap(input)
        .clear()
        .type('12')
        .type('20')
      input = doc.find('input')[2]
      cy
        .wrap(input)
        .type('123')
        .type('{enter}')
    })
    cy.url({ timeout: 20000 }).should('contain', '/en/profile/my-orders/')
    Cypress.Cookies.preserveOnce('sessionid')
  })
})

Was really hoping this would work. When I try getting the iframe, i get undefined :(

Try:

cy.get('iframe.stripe_checkout_app').then(function($iframe) {
    const $body = $iframe.contents().find('body')
    cy
      .wrap($body)
      .find('input:eq(0)')
      .type('4242424242424242')
    cy
      .wrap($body)
      .find('input:eq(1)')
      .type('1222')
    cy
      .wrap($body)
      .find('input:eq(2)')
      .type('123')
})

You will need to disable chromeWebSecurity:

// cypress.json

{
  "chromeWebSecurity": false
}

--disable-site-isolation-trials:

Check: https://docs.cypress.io/api/plugins/browser-launch-api.html# AND #1951

// /plugins/index.js

module.exports = (on, config) => {
  on("before:browser:launch", (browser = {}, args) => {
    if (browser.name === "chrome") {
      args.push("--disable-site-isolation-trials");
      return args;
    }
  });
};

This was helpful! Thanks.

A few updates for future search results (and probably myself):

• Stripe must have updated their markup, so I had to use CSS attribute selectors to get it: iframe[name^="__privateStripeFrame"]
• With Cypress 3.1.5 I did not seem to need to use Cypress.Cookies.preserveOnce('sessionid') as an example above shows.
• With Chrome 72 I did not seem to need --disable-site-isolation-trials
• But I did need the "chromeWebSecurity": false in cypress.json
• I did need to split the main 424242424242424242 bit into four chained instances of .type('4242').

Here is a full test that seems to work pretty well:

it(`works when you submit name, email and card number`, () => {
    cy.get('iframe[name^="__privateStripeFrame"]').then($iframe => {
      const $body = $iframe.contents().find('body')
      cy.wrap($body)
        .find('input[name="cardnumber"]')
        .type('4242')
        .type('4242')
        .type('4242')
        .type('4242')

      cy.wrap($body)
        .find('input:eq(2)')
        .type('1222')
      cy.wrap($body)
        .find('input:eq(3)')
        .type('223')
      cy.wrap($body)
        .find('input:eq(4)')
        .type('424242')
    })

    cy.get('.dollar-amount').type('1')

    cy.get('form')
      .submit()
      .should('contain', 'payment submitted')

    cy.get('.container').should('contain', '1000 credits')
  })

Thank you everyone for sharing! This was very helpful.

+1 to that! Thanks all 🙌

Very useful, thank you for sharing. Was wondering though has anyone tried writing some tests that interact with the 3D secure pages? It seems as if the payment gateway is now housed in a modal ?

Very helpful, thanks. If anyone is using Elements instead of Checkout, something like this might be helpful. The code below is designed to test a form with separate credit card and expiry elements.

// Enter test card data into Stripe Elements:
    cy.get('.__PrivateStripeElement > iframe').then(($elements) => {
      // $elements result set is the iframes for credit, expiry.
      const stripeElementsInputSelector = '.InputElement';

      // type into the first element:
      const creditInput = $elements.eq(0).contents().find(stripeElementsInputSelector);
      cy.wrap(creditInput).type('4242424242424242');

      // type into the expiry element:
      const expirationInput = $elements.eq(1).contents().find(stripeElementsInputSelector);
      // Expire far in the future: Dec 2059 seems to work.
      cy.wrap(expirationInput).type('12/59');
    });

THANK YOU @techieshark - That was super helpful and clean. I'm new to Cypress and encountered this issue today, and just extended to add CVC element.

Thanks for all the help. Not sure if everyone else found the same, but it seemed to me that you do need the cy.wait, or you can use a cy.should like this...

 cy.get("iframe.stripe_checkout_app").should(
      $iframe =>
        expect($iframe.contents().find("input[placeholder='Card number'")).to
          .exist
    );

And then follow it up with the main code (esentially the same as @mjhea0 's above)....

    cy.get("iframe.stripe_checkout_app").then($iframe => {
      const $body = $iframe.contents().find("body");
      cy.wrap($body)
        .find("input[placeholder='Card number']")
        .type("4242424242424242");
      cy.wrap($body)
        .find("input[placeholder='MM / YY']")
        .type("1222");
      cy.wrap($body)
        .find("input[placeholder='CVC']")
        .type("123");
    });

I found I needed chromeWebSecurity:false in cypress.json, but not the change in plugins/index.js.
I'm on Cypress 3.3.2.

Thank you everyone 🙏

If you're using separate element for each of the input fields (card number, cvc, expiry), then each one of those will be loaded in separate iframe. What worked for me is this:

// wait for the frames to load
cy.wait(1000)

/** PAYMENT **/
cy.get('.__PrivateStripeElement iframe').then(($iframe) => {
  cy.wrap($iframe.contents()[0].body)
    .find('input[name="cardnumber"]')
    .type('4242 4242 4242 4242')
  cy.wrap($iframe.contents()[1].body)
    .find('input[name=exp-date]')
    .type('1230')
  cy.wrap($iframe.contents()[2].body)
    .find('input[name=cvc]')
    .type('123')
})

How can I create a local page with stripe form?

has anyone tried to test https://stripe.com/docs/payments/3d-secure#example-of-a-3d-secure-2-flow 3D secure payment test? when after adding card details new popup message comes for confirmation which is iframe inside an iframe?

@nikhilesh009 we're doing something like:

  cy.get('.stripe-form__card-element iframe').then(($element) => {
    const $body = $element.contents();
    cy.wrap($body.find('input[name=cardnumber]')).type('4000002760003184');
    cy.wrap($body.find('input[name=exp-date]')).type('0423');
    cy.wrap($body.find('input[name=cvc]')).type('123');
  });
  cy.get('.stripe-form__card-element iframe').then(($element) => {
    const $body = $element.contents();
    cy.wrap($body.find('input[name=postal]')).type('12345');
  });

  cy.get('#stripeSubmitButton').click();

  // Have to give the inner iframe (challenge) enough time to load.
  cy.wait(6000);
  cy.get('iframe[name="__privateStripeFrame8"]').then(($iframe) => {
    const $body = $iframe.contents();
    cy.wrap($body.find('iframe#challengeFrame')).then(($el) => {
      const $challenge = $el.contents();
     // authorise
     cy.wrap($challenge.find('#test-source-authorize-3ds')).click();
    });
  });

For the 3D secure I cleaned it up a bit and made it into a utility, so I can both confirm and deny it. Hope it helps someone
Note the __privateStripeFrame does not have the number, it could fail on you randomly otherwise :)

function confirm3DSecureDialog (confirm = true) {
    cy.wait(5000)
    cy.get('iframe[name^=__privateStripeFrame]')
      .then(($firstIFrame) => {
        cy.wrap($firstIFrame.contents().find('iframe#challengeFrame'))
          .then(($secondIFrame) => {
            // authorise
            const target = confirm ? '#test-source-authorize-3ds' : '#test-source-fail-3ds'
            cy.wrap($secondIFrame.contents().find(target)).click()
          })
      })
  }

This was helpful! Thanks.

A few updates for future search results (and probably myself):

• Stripe must have updated their markup, so I had to use CSS attribute selectors to get it: iframe[name^="__privateStripeFrame"]
• With Cypress 3.1.5 I did not seem to need to use Cypress.Cookies.preserveOnce('sessionid') as an example above shows.
• With Chrome 72 I did not seem to need --disable-site-isolation-trials
• But I did need the "chromeWebSecurity": false in cypress.json
• I did need to split the main 424242424242424242 bit into four chained instances of .type('4242').

Here is a full test that seems to work pretty well:

it(`works when you submit name, email and card number`, () => {
    cy.get('iframe[name^="__privateStripeFrame"]').then($iframe => {
      const $body = $iframe.contents().find('body')
      cy.wrap($body)
        .find('input[name="cardnumber"]')
        .type('4242')
        .type('4242')
        .type('4242')
        .type('4242')

      cy.wrap($body)
        .find('input:eq(2)')
        .type('1222')
      cy.wrap($body)
        .find('input:eq(3)')
        .type('223')
      cy.wrap($body)
        .find('input:eq(4)')
        .type('424242')
    })

    cy.get('.dollar-amount').type('1')

    cy.get('form')
      .submit()
      .should('contain', 'payment submitted')

    cy.get('.container').should('contain', '1000 credits')
  })

this one worked for me. thank you everyone for sharing your work

Hi all,
This solution has been inconsistent for me.
Sometimes cypress times out looking for body inside the iframe.
In debugger, body is sometimes returned as null.
Is there a solution for this that works consistently?

Yeah I get that from time to time too, but I just re-run, its not that often :D You can await an extra few seconds probably.

Which version of Cypress are you using @jeremygottfried?

cypress: "^3.6.1"

Thanks @dobromir-hristov
It does work more consistently when I add a longer timeout before cy.get('iframe[name^="__privateStripeFrame5"]')
I wish there was a way to wait until the iframe body loads instead of an arbitrary timeout.

I've had success with using should instead of wait like in this example: https://medium.com/bratislava-angular/testing-an-app-inside-an-iframe-using-cypress-434a4d8b8bbe

Thank you @mjhea0 I will check that out

cy.get('iframe[name^=__privateStripeFrame]')
      .then(($firstIFrame) => {
        cy.wrap($firstIFrame.contents().find('iframe#challengeFrame'))
          .then(($secondIFrame) => {
            // authorise
            const target = confirm ? '#test-source-authorize-3ds' : '#test-source-fail-3ds'
            cy.wrap($secondIFrame.contents().find(target)).click()
          })
      })

Thank you very much @dobromir-hristov! This solved the stripe 3D Secure issue for me.

has anyone tried to test https://stripe.com/docs/payments/3d-secure#example-of-a-3d-secure-2-flow 3D secure payment test? when after adding card details new popup message comes for confirmation which is iframe inside an iframe?

See my comment above.

Thanks all :)

For me to test it without 3ds, it was enough:

cy.get('iframe[name="__privateStripeFrame5"]').then(function($iframe) {
      const $body = $iframe.contents().find('body')
      cy
        .wrap($body)
        .find('input[autocomplete="cc-number"]')
        .type('4242424242424242', { force: true })
      cy
        .wrap($body)
        .find('input[autocomplete="cc-exp"]')
        .type('03/30', { force: true })
      cy
        .wrap($body)
        .find('input[autocomplete="cc-csc"]')
        .type('737', { force: true })
      cy
        .wrap($body)
        .find('input[autocomplete="postal-code"]')
        .type('12345', { force: true })
  })

However, for 3ds I was struggling for a while. I hadd to add this to support/commands.js:

Cypress.Commands.add('iframe', { prevSubject: 'element' }, $iframe => {
  return new Cypress.Promise(resolve => {
      $iframe.ready(function() {
        resolve($iframe.contents().find('body'));
      });
  });
});

Obviously, in plugins I also used:

module.exports = (on, config) => {
  // `on` is used to hook into various events Cypress emits
  // `config` is the resolved Cypress config
  on("before:browser:launch", (browser = {}, launchOptions) => {
    if (browser.name === "chrome") {
      launchOptions.args.push("--disable-site-isolation-trials");
    }
  })
}

And finally in the test (for 3ds part):

cy.get('iframe[name^="__privateStripeFrame"]:eq(0)', { timeout: 20000 })
      .iframe()
      .find('iframe#challengeFrame')
      .iframe()
      .find('#test-source-authorize-3ds')
      .click()

I wasn't able to pass it with any of those methods. Any help? thanks!

i have this problem with payment cypress : https://stackoverflow.com/questions/64391115/cypress-automatic-tests-for-credit-card-payment can you help me please. I wasn't able to pass it with any of those methods. Any help? thanks!

There is another complication, we have our own receipt and invoice generated after the transaction is made, so if we stub the response, we cannot check our invoice and We do not visit, when you click on the button it goes to a redirect (it's not the old stripe popup) but the new stripe checkout is not API, but it's a redirect github.com/stripe-samples/checkout-one-time-payments

I've created a more stable way to test Stripe Elements and released it as an npm package.

The API is fairly simple to use and abstracts away waiting for any <iframe>s. It also does not add time to your tests with cy.wait.

    cy.get('#card-element').within(() => {
      cy.fillElementsInput('cardNumber', '4242424242424242');
      cy.fillElementsInput('cardExpiry', '1025'); // MMYY
      cy.fillElementsInput('cardCvc', '123');
      cy.fillElementsInput('postalCode', '90210');
    });

Nice @dbalatero, thanks for sharing!