cy.siblings() and cy.closest() in Cypress - Test Execution Trace

Test Overview

This test checks that when clicking the first list item, the test can find its sibling items and the closest parent list element. It verifies that cy.siblings() correctly finds sibling elements and cy.closest() finds the nearest ancestor element.

Test Code - Cypress

Cypress

describe('Test cy.siblings() and cy.closest()', () => {
  beforeEach(() => {
    cy.visit('https://example.cypress.io/commands/traversal')
  })

  it('finds siblings and closest parent', () => {
    // Find the first list item and click it
    cy.get('.traversal-list > li').first().click()

    // From the first list item, get its sibling list items
    cy.get('.traversal-list > li').first()
      .siblings('li')
      .should('have.length.greaterThan', 0)

    // From the first list item, find the closest ul parent
    cy.get('.traversal-list > li').first()
      .closest('ul')
      .should('have.class', 'traversal-list')
  })
})

Execution Trace - 5 Steps

Step	Action	System State	Assertion	Result
1	Test starts	Cypress test runner initialized	—	PASS
2	Browser opens and navigates to 'https://example.cypress.io/commands/traversal'	Page with traversal commands loaded, showing a list with buttons	Page loaded successfully	PASS
3	Find the first list item in '.traversal-list' and click it	First list item is focused and clicked	List item click performed	PASS
4	From the same list item, find sibling list items using cy.siblings('li')	Sibling list items of the first list item are located	Assert that siblings length is greater than 0	PASS
5	From the list item, find the closest 'ul' ancestor using cy.closest('ul')	Closest ul element with class 'traversal-list' is found	Assert that closest ul has class 'traversal-list'	PASS

Failure Scenario

Failing Condition: If the first list item in '.traversal-list' is not found or has no siblings, or closest ul is missing

Execution Trace Quiz - 3 Questions

What does cy.siblings('li') do in this test?

A Finds the closest parent li element

B Finds all li elements that share the same parent as the current li

C Finds all child li inside the current li

D Finds the next li element in the DOM

Key Result

Use cy.siblings() to find elements sharing the same parent and cy.closest() to find the nearest ancestor element. This helps test relationships in the page structure clearly.

Practice

1. What does the Cypress command cy.siblings() do in a test?

easy

A. Finds all elements on the page

B. Finds the closest parent element matching a selector

C. Finds child elements inside the current element

D. Finds all elements at the same level as the current element

Solution

1. Step 1: Understand the purpose of cy.siblings()

   This command selects all elements that share the same parent as the current element, meaning they are at the same level in the DOM tree.

2. Step 2: Compare with other options

   cy.closest() finds a parent, not siblings. Child elements are found with cy.children(). Finding all elements on the page is not related.

3. Final Answer:

   Finds all elements at the same level as the current element -> Option D

4. Quick Check:

   cy.siblings() = same-level elements [OK]

Hint: Siblings share the same parent element [OK]

Common Mistakes:

• Confusing siblings with parents
• Thinking siblings are child elements
• Assuming it finds all elements on the page

2. Which of the following is the correct syntax to find the closest parent with class .container using Cypress?

easy

A. cy.get('.container').closest()

B. cy.closest('.container')

C. cy.get('.child').closest('.container')

D. cy.siblings('.container')

Solution

1. Step 1: Identify the element to start from

   You must start from a known element, for example cy.get('.child'), then find its closest parent matching .container.

2. Step 2: Use closest() with selector

   The correct syntax is cy.get('.child').closest('.container'). cy.get('.container').closest() is wrong because closest() needs to be called on an element, not on the selector itself. cy.closest('.container') is invalid syntax. cy.siblings('.container') uses siblings(), which finds siblings, not parents.

3. Final Answer:

   cy.get('.child').closest('.container') -> Option C

4. Quick Check:

   Start element + closest('.container') = cy.get('.child').closest('.container') [OK]

Hint: Call closest() on a found element with selector [OK]

Common Mistakes:

• Calling closest() without a starting element
• Using siblings() instead of closest()
• Passing no selector to closest()

3. Given this HTML snippet:

<div class='container'>
  <ul>
    <li class='item selected'>Item 1</li>
    <li class='item'>Item 2</li>
    <li class='item'>Item 3</li>
  </ul>
</div>

What will cy.get('.selected').siblings('.item').should('have.length', ?) assert?

medium

A. 2

B. 3

C. 1

D. 0

Solution

1. Step 1: Identify siblings of the selected element

   The element with class .selected is the first <li>. Its siblings with class .item are the other two <li> elements.

2. Step 2: Count matching siblings

   There are exactly 2 siblings with class .item besides the selected one.

3. Final Answer:

   2 -> Option A

4. Quick Check:

   Siblings with class '.item' count = 2 [OK]

Hint: Count siblings with matching class [OK]

Common Mistakes:

• Counting the selected element itself
• Confusing siblings with children
• Miscounting the number of siblings

4. You wrote this Cypress code:

cy.get('.button').closest('.container').siblings('.container').click()

But the test fails with an error that no elements are found. What is the likely problem?

medium

A. The click() command is not valid after siblings()

B. There are no sibling elements with class '.container' next to the closest parent

C. The siblings() command only works on child elements, not parents

D. The closest() command cannot be chained after get()

Solution

1. Step 1: Understand the chaining of commands

   cy.get('.button') finds the button, closest('.container') finds its nearest parent container, then siblings('.container') looks for containers at the same level as that parent.

2. Step 2: Reason about the DOM structure

   If no sibling containers exist next to the closest parent, siblings('.container') returns empty, causing click() to fail.

3. Final Answer:

   There are no sibling elements with class '.container' next to the closest parent -> Option B

4. Quick Check:

   No siblings found = test fails [OK]

Hint: Check if siblings actually exist in DOM [OK]

Common Mistakes:

• Thinking closest() can't chain after get()
• Believing siblings() works on parents
• Assuming click() is invalid after siblings()

5. You want to test that a clicked button highlights its sibling buttons but not buttons in other containers. Which Cypress command chain correctly finds only sibling buttons inside the same container?

hard

A. cy.get('.button.clicked').siblings('.button')

B. cy.get('.button.clicked').closest('.container').siblings('.button')

C. cy.get('.button.clicked').closest('.container').find('.button').siblings()

D. cy.get('.button.clicked').siblings().closest('.container')

Solution

1. Step 1: Identify the target buttons

   You want siblings of the clicked button that share the same parent container, so siblings('.button') after selecting the clicked button is correct.

2. Step 2: Analyze other options

   cy.get('.button.clicked').closest('.container').siblings('.button') finds sibling containers, not buttons. cy.get('.button.clicked').closest('.container').find('.button').siblings() finds buttons inside the container but then calls siblings() without a selector, which may include unrelated elements. cy.get('.button.clicked').siblings().closest('.container') finds siblings first, then closest container, which does not select sibling buttons correctly.

3. Final Answer:

   cy.get('.button.clicked').siblings('.button') -> Option A

4. Quick Check:

   Siblings with class '.button' = cy.get('.button.clicked').siblings('.button') [OK]

Hint: Use siblings() directly on clicked button for siblings [OK]

Common Mistakes:

• Using closest() before siblings() incorrectly
• Selecting sibling containers instead of buttons
• Calling siblings() without a selector