budibase/packages/builder/cypress/integration/createComponents.spec.js

xcontext("Create Components", () => {
  before(() => {
    cy.server()
    cy.visit("localhost:4001/_builder")
    // https://on.cypress.io/type
    cy.createApp("Table App", "Table App Description")
    cy.createTable("dog", "name", "age")
    cy.addRow("bob", "15")
  })

  // https://on.cypress.io/interacting-with-elements
  it("should add a container", () => {
    cy.navigateToFrontend()
    cy.get(".switcher > :nth-child(2)").click()
    cy.contains("Container").click()
  })
  it("should add a headline", () => {
    cy.addHeadlineComponent("An Amazing headline!")

    getIframeBody().contains("An Amazing headline!")
  })
  it("change the font size of the headline", () => {
    cy.contains("Typography").click()
    cy.get("[data-cy=font-size-prop-control]").click()
    cy.contains("60px").click()
    cy.contains("Design").click()

    getIframeBody()
      .contains("An Amazing headline!")
      .should("have.css", "font-size", "60px")
  })
})

const getIframeDocument = () => {
  return (
    cy
      .get("iframe")
      // Cypress yields jQuery element, which has the real
      // DOM element under property "0".
      // From the real DOM iframe element we can get
      // the "document" element, it is stored in "contentDocument" property
      // Cypress "its" command can access deep properties using dot notation
      // https://on.cypress.io/its
      .its("0.contentDocument")
      .should("exist")
  )
}

const getIframeBody = () => {
  // get the document
  return (
    getIframeDocument()
      // automatically retries until body is loaded
      .its("body")
      .should("not.be.undefined")
      // wraps "body" DOM element to allow
      // chaining more Cypress commands, like ".find(...)"
      .then(cy.wrap)
  )
}