cy.intercept() for request interception in Cypress - Cheat Sheet & Quick Revision

Recall & Review

beginner

What is the purpose of cy.intercept() in Cypress?

cy.intercept() is used to catch and control HTTP requests made by the application during testing. It helps to spy on, modify, or stub network calls.

beginner

How do you stub a GET request to /api/users with cy.intercept()?

You use cy.intercept('GET', '/api/users', { fixture: 'users.json' }) to replace the real response with a fixture file.

beginner

What does it mean to 'spy' on a request using cy.intercept()?

Spying means watching the request and response without changing them. You can check if the request was made and inspect its details.

intermediate

How can you wait for an intercepted request to complete before continuing a test?

Use cy.wait() with an alias set by cy.intercept(). For example, cy.intercept('GET', '/api/data').as('getData') then cy.wait('@getData').

beginner

Why is intercepting requests useful in testing web applications?

It helps make tests faster, more reliable, and independent of backend changes by controlling network responses and simulating different scenarios.

What does cy.intercept() primarily do in Cypress?

A Intercept CSS styles

B Intercept user clicks

C Intercept and control HTTP requests

D Intercept console logs

cy.intercept() is designed to intercept HTTP requests, not user actions or styles.

How do you alias an intercepted request for later use?

A Using <code>.as('aliasName')</code>

B Using <code>.wait('aliasName')</code>

C Using <code>.get('aliasName')</code>

D Using <code>.click('aliasName')</code>

You assign an alias with .as() to reference the intercepted request later.

Which HTTP method can cy.intercept() handle?

A All HTTP methods

B Only POST

C Only GET

D Only PUT and DELETE

cy.intercept() can intercept any HTTP method like GET, POST, PUT, DELETE, etc.

What is a common use of stubbing with cy.intercept()?

A To block user input

B To replace real server responses with fake data

C To speed up CSS rendering

D To change browser settings

Stubbing replaces real server responses with controlled data for predictable tests.

What happens if you do not wait for an intercepted request before asserting results?

A Test will always pass

B Test will reload the page

C Test will skip the request

D Test might fail because the request is not finished

Not waiting can cause assertions to run too early, leading to failures.

Explain how to use cy.intercept() to stub a POST request and why this is useful.

Think about controlling server responses to test different scenarios.

Describe the difference between spying and stubbing with cy.intercept().

One watches requests, the other changes responses.