Slot testing in Cypress - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to visit the slot machine page before each test.

Cypress

beforeEach(() => {
  cy.[1]('http://localhost:3000/slot-machine')
})

Drag options to blanks, or click blank then click option'

Aget

Bclick

Cvisit

Dcontains

Attempts:

3 left

💡 Hint

Common Mistakes

Using cy.click() instead of cy.visit()

Using cy.get() which selects elements but does not load pages

The cy.visit() command loads a page URL in Cypress before each test.

2fill in blank

medium

Complete the code to check if the slot machine's spin button is visible.

Cypress

cy.get('#spin-button').[1]('be.visible')

Drag options to blanks, or click blank then click option'

Ashould

Bclick

Ccontains

Dfind

Attempts:

3 left

💡 Hint

Common Mistakes

Using click() instead of should() for assertions

Using contains() which checks text content, not visibility

The should('be.visible') assertion checks if the element is visible on the page.

3fill in blank

hard

Fix the error in the code to correctly simulate clicking the spin button.

Cypress

cy.get('#spin-button').[1]()

Drag options to blanks, or click blank then click option'

Ashould

Bclick

Ctype

Dvisit

Attempts:

3 left

💡 Hint

Common Mistakes

Using should() which is for assertions, not actions

Using type() which is for typing text

The click() command simulates a user clicking the button.

4fill in blank

hard

Fill both blanks to check that the slot machine result contains exactly 3 symbols.

Cypress

cy.get('.slot-result').[1]().should('have.length', [2])

Drag options to blanks, or click blank then click option'

Achildren

B3

Ctext

Dclick

Attempts:

3 left

💡 Hint

Common Mistakes

Using text() instead of children() to get elements

Checking length with wrong number

children() gets the child elements, and should('have.length', 3) asserts there are exactly 3 symbols.

5fill in blank

hard

Fill all three blanks to assert the slot machine displays a winning message after spinning.

Cypress

cy.get('#spin-button').click()
cy.get('.message').[1]('text').should('contain', [2])
cy.get('.message').should('have.class', [3])

Drag options to blanks, or click blank then click option'

Ainvoke

B'You win!'

C'win-message'

Dtext

Attempts:

3 left

💡 Hint

Common Mistakes

Using text() directly instead of invoke('text')

Checking wrong message text or class

invoke('text') gets the text content, should('contain', 'You win!') checks the message, and should('have.class', 'win-message') verifies the CSS class for winning.

Practice

1. What is the main purpose of slot testing in Cypress?

easy

A. To check network requests made by the application

B. To validate CSS styles of static elements

C. To test database connections

D. To verify dynamic content inside component slots renders correctly

Solution

1. Step 1: Understand slot testing concept

   Slot testing focuses on dynamic content areas called slots inside components.

2. Step 2: Identify Cypress role in slot testing

   Cypress commands are used to find slots and verify their content correctness.

3. Final Answer:

   To verify dynamic content inside component slots renders correctly -> Option D

4. Quick Check:

   Slot testing = Verify dynamic slot content [OK]

Hint: Slots hold dynamic content; test their presence and correctness [OK]

Common Mistakes:

• Confusing slot testing with network or database testing
• Ignoring fallback content in slots
• Testing only static elements instead of slots

2. Which Cypress command correctly selects a named slot with the name 'header'?

easy

A. cy.get('#header')

B. cy.get('slot[name="header"]')

C. cy.get('div.header')

D. cy.get('slot#header')

Solution

1. Step 1: Understand slot selector syntax

   Named slots use the slot tag with a name attribute, so selector is slot[name="header"].

2. Step 2: Match Cypress command to selector

   Only cy.get('slot[name="header"]') correctly targets the named slot.

3. Final Answer:

   cy.get('slot[name="header"]') -> Option B

4. Quick Check:

   Named slot selector = slot[name="..."] [OK]

Hint: Use attribute selector for named slots: slot[name="..."] [OK]

Common Mistakes:

• Using class or id selectors instead of slot attribute
• Confusing slot tag with div or other elements
• Missing quotes around attribute value

3. Given this Cypress test snippet:

cy.get('slot[name="footer"]').should('contain.text', 'Contact us')

What will happen if the slot named 'footer' contains the text 'Contact us today'?

medium

A. Test passes because 'Contact us' is part of the slot text

B. Test fails because exact text does not match

C. Test throws a syntax error

D. Test passes only if the slot is visible

Solution

1. Step 1: Understand the assertion used

   The assertion should('contain.text', 'Contact us') checks if the slot text includes the substring 'Contact us'.

2. Step 2: Analyze the slot content

   The slot text is 'Contact us today', which contains 'Contact us' as a substring.

3. Final Answer:

   Test passes because 'Contact us' is part of the slot text -> Option A

4. Quick Check:

   contain.text checks substring presence [OK]

Hint: contain.text checks substring, not exact match [OK]

Common Mistakes:

• Assuming contain.text requires exact match
• Confusing contain.text with equals assertion
• Ignoring slot visibility requirement

4. You wrote this Cypress test:

cy.get('slot[name="main"]').should('have.text', 'Welcome')

But the test fails even though the slot shows 'Welcome to our site'. What is the likely problem?

medium

A. Cypress cannot test slot content

B. The slot selector is incorrect

C. Using 'have.text' requires exact text match, so it fails

D. The slot is not visible on the page

Solution

1. Step 1: Understand 'have.text' assertion

   'have.text' checks for exact text equality, not substring.

2. Step 2: Compare expected and actual slot text

   Expected 'Welcome' does not exactly match 'Welcome to our site', so assertion fails.

3. Final Answer:

   Using 'have.text' requires exact text match, so it fails -> Option C

4. Quick Check:

   have.text = exact match, contain.text = substring [OK]

Hint: Use contain.text for partial matches, have.text for exact [OK]

Common Mistakes:

• Confusing have.text with contain.text
• Assuming slot selector is wrong without checking
• Ignoring visibility but test fails due to text mismatch

5. You want to test a component with a default slot and a named slot 'sidebar'. The default slot shows fallback text 'No content'. Which Cypress test correctly verifies fallback and named slot content?

hard

A. cy.get('slot:not([name])').should('contain.text', 'No content'); cy.get('slot[name="sidebar"]').should('contain.text', 'Menu')

B. cy.get('slot[name="default"]').should('contain.text', 'No content'); cy.get('slot#sidebar').should('contain.text', 'Menu')

C. cy.get('slot').should('contain.text', 'No content'); cy.get('slot[name="sidebar"]').should('contain.text', 'Menu')

D. cy.get('slot.default').should('contain.text', 'No content'); cy.get('slot.sidebar').should('contain.text', 'Menu')

Solution

1. Step 1: Select default slot correctly

   The default slot has no name attribute, so selector is slot:not([name]).

2. Step 2: Select named slot 'sidebar'

   Named slot selector is slot[name="sidebar"].

3. Step 3: Verify fallback and named slot content

   Use contain.text to check fallback 'No content' and sidebar 'Menu'.

4. Final Answer:

   cy.get('slot:not([name])').should('contain.text', 'No content'); cy.get('slot[name="sidebar"]').should('contain.text', 'Menu') -> Option A

5. Quick Check:

   Default slot = slot:not([name]), named slot = slot[name="..."] [OK]

Hint: Default slot has no name attribute; use :not([name]) selector [OK]

Common Mistakes:

• Using slot[name="default"] which does not exist
• Using class or id selectors on slot elements
• Not distinguishing default slot from named slots