Mounting React components in Cypress - Test Execution Trace

Test Overview

This test mounts a simple React component using Cypress. It verifies that the component renders correctly and displays the expected text.

Test Code - Cypress

Cypress

import React from 'react'
import { mount } from 'cypress/react'

function Greeting() {
  return <h1>Hello, Cypress!</h1>
}

describe('Mount React Component', () => {
  it('renders the Greeting component', () => {
    mount(<Greeting />)
    cy.get('h1').should('contain.text', 'Hello, Cypress!')
  })
})

Execution Trace - 4 Steps

Step	Action	System State	Assertion	Result
1	Test starts	Cypress test runner is ready	-	PASS
2	Mounts the Greeting React component using mount()	Browser displays the Greeting component with <h1>Hello, Cypress!</h1>	-	PASS
3	Finds the <h1> element using cy.get('h1')	The <h1> element is present in the DOM	-	PASS
4	Checks that the <h1> contains text 'Hello, Cypress!' using .should('contain.text')	The <h1> text matches 'Hello, Cypress!'	Verify <h1> text content equals 'Hello, Cypress!'	PASS

Failure Scenario

Failing Condition: The Greeting component does not render or the <h1> text is different

Execution Trace Quiz - 3 Questions

What does the mount() function do in this test?

A It waits for the component to load data

B It clicks a button inside the component

C It renders the React component inside the Cypress test browser

D It asserts the component text

Key Result

Always verify that the React component renders the expected content by asserting visible text after mounting it in Cypress.