cy.readFile() assertions in Cypress - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to read a file and check its content includes 'Hello'.

Cypress

cy.readFile('example.txt').should('[1]', 'Hello')

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

Ainclude

Bcontain

Chave.text

Dequal

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'equal' instead of 'include' causes the test to fail if the content is longer.

Using 'have.text' is for DOM elements, not file content.

The should('include', 'Hello') assertion checks if the file content includes the text 'Hello'.

2fill in blank

medium

Complete the code to assert the file content equals exactly 'Test data'.

Cypress

cy.readFile('data.txt').should('[1]', 'Test data')

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

Acontain

Bequal

Cinclude

Dhave.length

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'include' or 'contain' will pass if the content has extra text.

Using 'have.length' is for checking length, not content.

The should('equal', 'Test data') assertion checks if the file content exactly matches 'Test data'.

3fill in blank

hard

Fix the error in the assertion to check the file content length is 10.

Cypress

cy.readFile('log.txt').should('have.[1]', 10)

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

Alengths

BlengthOf

Csize

Dlength

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'lengthOf' causes the test to fail because it's not a valid property.

Using 'size' or 'lengths' are invalid in this context.

The correct assertion is should('have.length', 10) to check the string length.

4fill in blank

hard

Fill both blanks to assert the file content includes 'success' and has length 5.

Cypress

cy.readFile('output.log').should('[1]', 'success').and('have.[2]', 5)

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

Ainclude

Bcontain

Clength

DlengthOf

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'contain' instead of 'include' may work but is less common here.

Using 'lengthOf' causes assertion errors.

Use should('include', 'success') to check substring and and('have.length', 5) to check length.

5fill in blank

hard

Fill all three blanks to assert the file content equals 'Done', contains 'Done', and has length 4.

Cypress

cy.readFile('status.txt').should('[1]', 'Done').and('[2]', 'Done').and('have.[3]', 4)

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

Aequal

Binclude

Clength

Dcontain

Attempts:

3 left

💡 Hint

Common Mistakes

Mixing 'contain' and 'include' inconsistently.

Using 'lengthOf' instead of 'length' causes errors.

The first assertion checks exact equality, the second checks substring inclusion, and the third checks length.