[Solved] You wrote this API-first setup code in Cypress:cy.request('POST', '/api/items', {name: 'Book'}) .then((res) => { expect(res.status).to.eq(200) cy.wrap(res.body.id).as('itemId') }) cy.get('@itemId').... | Cypress

Cypress - Test Organization and Patterns

You wrote this API-first setup code in Cypress:

cy.request('POST', '/api/items', {name: 'Book'})
  .then((res) => {
    expect(res.status).to.eq(200)
    cy.wrap(res.body.id).as('itemId')
  })
cy.get('@itemId').then((id) => {
  cy.visit(`/items/${id}`)
})

But the test fails with "Cannot read property 'then' of undefined". What is the likely cause?

AThe <code>cy.get('@itemId')</code> runs before the alias is set.

BThe API returned status 500 causing failure.

CThe <code>cy.request</code> method is misspelled.

DThe <code>cy.wrap</code> command cannot create aliases.

Step-by-Step Solution

Solution:

Step 1: Understand Cypress command chaining and timing
Cypress commands run asynchronously and in order, but alias usage requires the alias to be set before use.
Step 2: Identify timing issue with alias usage
cy.get('@itemId') is called immediately, before the alias is set inside the then callback, causing undefined error.
Final Answer:
The cy.get('@itemId') runs before the alias is set. -> Option A
Quick Check:
Alias must be set before cy.get() uses it [OK]

Quick Trick: Set alias before using cy.get('@alias') to avoid timing errors [OK]

Common Mistakes:

Assuming API error causes this specific error
Thinking cy.request is misspelled
Believing cy.wrap cannot create aliases

Master "Test Organization and Patterns" in Cypress

9 interactive learning modes - each teaches the same concept differently

Learn Why Deep Trace Try Challenge Automate Recall Frame

More Cypress Quizzes

You wrote this API-first setup code in Cypress:

Step 1: Understand Cypress command chaining and timing

Step 2: Identify timing issue with alias usage

Final Answer:

Quick Check:

Want More Practice?