cypress.config.js settings - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to set the base URL in cypress.config.js.

Cypress

module.exports = {
  e2e: {
    baseUrl: '[1]'
  }
};

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

A"http://localhost:3000"

B"localhost"

C3000

DbaseUrl

Attempts:

3 left

💡 Hint

Common Mistakes

Using only the hostname without protocol

Using a number instead of a string

Omitting quotes around the URL

The baseUrl setting must be a full URL string, like "http://localhost:3000". This tells Cypress where to start tests.

2fill in blank

medium

Complete the code to set the test files pattern in cypress.config.js.

Cypress

module.exports = {
  e2e: {
    specPattern: '[1]'
  }
};

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

A"*.spec"

B"test/*.js"

C"**/*.test.js"

D"specPattern"

Attempts:

3 left

💡 Hint

Common Mistakes

Using a folder name instead of a pattern

Omitting quotes

Using an incomplete pattern

The specPattern defines which test files Cypress runs. The pattern "**/*.test.js" matches all files ending with .test.js in any folder.

3fill in blank

hard

Fix the error in setting the viewport width in cypress.config.js.

Cypress

module.exports = {
  e2e: {
    viewportWidth: [1]
  }
};

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

AviewportWidth

B"1000"

Cwidth: 1000

D1000

Attempts:

3 left

💡 Hint

Common Mistakes

Putting the number in quotes

Using an object instead of a number

Using the setting name as value

The viewportWidth must be a number, not a string or object. So use 1000 without quotes.

4fill in blank

hard

Fill both blanks to set viewport height and enable video recording in cypress.config.js.

Cypress

module.exports = {
  e2e: {
    viewportHeight: [1],
    video: [2]
  }
};

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

A800

Btrue

Cfalse

D1024

Attempts:

3 left

💡 Hint

Common Mistakes

Using strings instead of numbers or booleans

Setting video to a string instead of boolean

Mixing up viewportHeight and viewportWidth

viewportHeight expects a number like 800. The video setting is a boolean; true enables video recording.

5fill in blank

hard

Fill all three blanks to set retries, default command timeout, and base URL in cypress.config.js.

Cypress

module.exports = {
  e2e: {
    retries: [1],
    defaultCommandTimeout: [2],
    baseUrl: [3]
  }
};

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

A2

B5000

C"https://example.com"

Dtrue

Attempts:

3 left

💡 Hint

Common Mistakes

Using strings for retries or timeout

Omitting quotes around baseUrl

Using boolean for retries

retries is a number for how many times to retry failed tests. defaultCommandTimeout is a number in milliseconds for command wait time. baseUrl is a string URL.

Practice

1. What is the main purpose of the cypress.config.js file in a Cypress project?

easy

A. To set configuration options like base URL and test locations for Cypress tests

B. To write the actual test cases for Cypress

C. To install Cypress dependencies

D. To run Cypress tests manually from the command line

Solution

1. Step 1: Understand the role of cypress.config.js

   This file is used to configure how Cypress runs tests, including settings like base URL and test file paths.

2. Step 2: Differentiate from other files

   Test cases are written in separate test files, not in the config file. Installation and running commands happen outside this file.

3. Final Answer:

   To set configuration options like base URL and test locations for Cypress tests -> Option A

4. Quick Check:

   Config file sets options = D [OK]

Hint: Config file sets test environment and paths [OK]

Common Mistakes:

• Confusing config file with test files
• Thinking config installs Cypress
• Believing config runs tests manually

2. Which of the following is the correct way to export the Cypress configuration using defineConfig in cypress.config.js?

easy

A. module.exports = { baseUrl: 'http://localhost:3000' }

B. export const config = { baseUrl: 'http://localhost:3000' }

C. defineConfig({ baseUrl: 'http://localhost:3000' })

D. export default defineConfig({ e2e: { baseUrl: 'http://localhost:3000' } })

Solution

1. Step 1: Recall the modern Cypress config syntax

   Since Cypress 10+, the config file uses defineConfig and exports it as default with ES module syntax.

2. Step 2: Check the correct structure

   The e2e object wraps settings like baseUrl. export default defineConfig({ e2e: { baseUrl: 'http://localhost:3000' } }) matches this pattern exactly.

3. Final Answer:

   export default defineConfig({ e2e: { baseUrl: 'http://localhost:3000' } }) -> Option D

4. Quick Check:

   Use defineConfig with export default = B [OK]

Hint: Use export default defineConfig({ e2e: { ... } }) [OK]

Common Mistakes:

• Forgetting to wrap settings inside e2e object
• Using CommonJS export instead of ES module
• Not using defineConfig function

3. Given this cypress.config.js snippet, what will be the base URL used during test runs?

import { defineConfig } from 'cypress'

export default defineConfig({
  e2e: {
    baseUrl: 'https://example.com',
    specPattern: 'cypress/e2e/**/*.cy.js'
  }
})

medium

A. http://localhost:3000

B. https://example.com

C. cypress/e2e/**/*.cy.js

D. No base URL is set

Solution

1. Step 1: Identify the baseUrl property in config

   The config sets baseUrl to 'https://example.com' inside the e2e object.

2. Step 2: Understand baseUrl usage

   This URL is used as the root for all relative URLs in tests, so it will be 'https://example.com'.

3. Final Answer:

   https://example.com -> Option B

4. Quick Check:

   baseUrl set to https://example.com = C [OK]

Hint: Look for baseUrl inside e2e object [OK]

Common Mistakes:

• Confusing specPattern with baseUrl
• Assuming default localhost URL
• Missing that baseUrl is inside e2e

4. You wrote this cypress.config.js but Cypress throws an error when running tests:

import { defineConfig } from 'cypress'

export default {
  e2e: {
    baseUrl: 'http://localhost:8080'
  }
}

What is the likely cause of the error?

medium

A. Using export default instead of module.exports

B. baseUrl must be outside the e2e object

C. Missing call to defineConfig wrapping the config object

D. baseUrl value must be an IP address

Solution

1. Step 1: Check the export syntax

   The config is exported as a plain object, but Cypress expects the config wrapped in defineConfig().

2. Step 2: Understand Cypress config requirements

   Without defineConfig, Cypress cannot properly parse the config, causing errors.

3. Final Answer:

   Missing call to defineConfig wrapping the config object -> Option C

4. Quick Check:

   Always wrap config in defineConfig() = A [OK]

Hint: Always wrap config object with defineConfig() [OK]

Common Mistakes:

• Placing baseUrl outside e2e
• Confusing export default with CommonJS
• Thinking baseUrl must be IP address

5. You want to set a custom environment variable API_KEY in cypress.config.js so it can be accessed in your tests. Which is the correct way to add it inside the config?

hard

A. export default defineConfig({ e2e: { env: { API_KEY: '12345' } } })

B. export default defineConfig({ env: { API_KEY: '12345' } })

C. export default defineConfig({ e2e: { baseUrl: 'http://localhost', API_KEY: '12345' } })

D. export default defineConfig({ e2e: { environment: { API_KEY: '12345' } } })

Solution

1. Step 1: Locate where environment variables go

   Environment variables for e2e tests go inside the env object nested within the e2e config.

2. Step 2: Verify correct property names

   The key must be env, not environment, and it must be inside e2e.

3. Final Answer:

   export default defineConfig({ e2e: { env: { API_KEY: '12345' } } }) -> Option A

4. Quick Check:

   Use e2e.env for env vars = A [OK]

Hint: Put env vars inside e2e.env object [OK]

Common Mistakes:

• Placing env outside e2e
• Using wrong key name like environment
• Adding env vars directly under e2e without env object