React JS Masterclass - Go From Zero To Job Ready - Testing Structure / 151

React JS Masterclass - Go From Zero To Job Ready - Testing Structure / 151

Assessment

Interactive Video

Information Technology (IT), Architecture

University

Practice Problem

Hard

Created by

Wayground Content

FREE Resource

The video tutorial covers the basics of setting up and writing tests using Jest. It explains how to handle failed tests, the importance of removing empty files, and the process of writing a test with a name and callback function. The tutorial delves into querying elements using various methods like test ID and placeholder text, and discusses testing conditions using expect statements. Advanced querying techniques and the use of expectations and assertions are also covered, providing a comprehensive guide to testing in a React environment.

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10 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Why is it important to remove empty test files in Jest?

They are not supported by Jest.

They cause syntax errors.

They lead to failed tests.

They slow down the test execution.

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What are the three main steps in a Jest test?

Compile, Test, Deploy

Setup, Run, Teardown

Initialize, Execute, Validate

Render, Query, Condition

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which method is used to select an element by its test ID in Jest?

getByLabelText

getByTestId

getByText

getByRole

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which method would you use to find an element by its placeholder text?

getByRole

getByLabelText

getByAltText

getByPlaceholderText

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What does the getBy method return if the element is not found?

an empty array

an error

undefined

null

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which query method in Jest returns a promise?

getBy

queryBy

allBy

findBy

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the purpose of using getAllBy in Jest?

To select elements by role

To select elements by text

To select multiple elements

To select a single element

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