What roles can I use the Jest Assessment Test for?

Here are few roles for which we recommend this test: Node.js Software Engineer Front-End Developer

What is Jest Test - jest-skills-test?

The Jest Test assesses candidates' skills in Jest, a JavaScript testing framework. It is used by recruiters to evaluate knowledge in Jest, testing methodologies, and JavaScript. This test helps in identifying skilled professionals for software testing roles.

Can I combine Jest test with JavaScript questions?

Yes, recruiters can request a custom test with multiple skills. For more details on how we assess JavaScript skills, check our JavaScript Online Test .

What kind of questions are used to evaluate senior candidates in the Jest Test?

The Jest Test includes multiple-choice questions and coding questions covering skills such as Test Execution, Mocha Backends, Utility Layers, and CPU Backend with Native Extensions. It assesses both foundational knowledge and advanced skills relevant to senior roles.

How to use Jest Test - jest-skills-test in my hiring process?

Use this test as a pre-screening tool early in your recruitment process. Add a link to the assessment in your job post or invite candidates by email. Adaface streamlines the screening process to identify skilled candidates faster.

Can I test Jest and Mocha together in a test?

Yes, you can test both Jest and Mocha together. This helps in evaluating the candidate's proficiency in different JavaScript testing frameworks. Check our Mocha Online Test for more details.

What are the main JavaScript testing framework tests?

Some of the main JavaScript testing framework tests include: Mocha Online Test Cucumber Test Ranorex Test

Jest Test

The Jest online test uses multiple-choice questions to evaluate candidates on their knowledge of Jest, which is a popular JavaScript testing framework used for testing React and Node.js applications. The test covers topics such as testing fundamentals, test-driven development, Jest configuration and setup, test matchers and assertions, mocking and spying, async testing, and snapshot testing. The test aims to evaluate candidates on their ability to write effective and maintainable test cases, debug and troubleshoot testing issues, and integrate Jest with other tools and frameworks.

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Screen candidates with a 35 mins test

Test duration: ~ 35 mins

Difficulty level: Moderate

Availability: Available as custom test

Questions:

8 Jest MCQs
4 Testing MCQs
4 JavaScript MCQs

Covered skills:

Data Layers

Statistical Layers

Initializers

Test Execution

Mocha Backends

Computation Layer

Utility Layers

CPU Backend with Native Extention

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Use Adaface tests trusted by recruitment teams globally

Adaface is used by 1500+ businesses in 80 countries.

Adaface skill assessments measure on-the-job skills of candidates, providing employers with an accurate tool for screening potential hires.

Use the Jest Assessment Test to shortlist qualified candidates

The Jest Test helps recruiters and hiring managers identify qualified candidates from a pool of resumes, and helps in taking objective hiring decisions. It reduces the administrative overhead of interviewing too many candidates and saves time by filtering out unqualified candidates at the first step of the hiring process.

The test screens for the following skills that hiring managers look for in candidates:

Ability to write effective and efficient Jest test cases
Ability to implement and utilize testing frameworks for JavaScript
Ability to work with data and statistics in testing
Ability to initialize and set up testing environments
Ability to execute tests and analyze results
Understanding of Mocha backends and its usage in testing
Understanding of computation layer and its role in testing
Ability to utilize utility layers in testing
Familiarity with CPU backend and native extensions
Understanding of data layers and their importance in testing
Knowledge of statistical layers and their significance in testing
Awareness of the role of initializers in testing

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Screen candidates with the highest quality questions

We have a very high focus on the quality of questions that test for on-the-job skills. Every question is non-googleable and we have a very high bar for the level of subject matter experts we onboard to create these questions. We have crawlers to check if any of the questions are leaked online. If/ when a question gets leaked, we get an alert. We change the question for you & let you know.

How we design questions

These are just a small sample from our library of 15,000+ questions. The actual questions on this Jest Test will be non-googleable.

🧐 Question
Easy Floating points	Solve
Check the following Jest tests: Which of the tests will pass?
Medium Database testcase Regression Testing	Solve
Adaface is developing a new database system called “Helen”. The tester at Adaface developed the following testcase for regression testing: 1. Open Helen 2. Open “Students” database 3. Enter data for “Sid” 4. Set checkpoint 5. Store “Sid” data in “Students” 6. Restart Helen 7. Read “Sid” data from “Students” 8. Compare checkpoint with the contents When the tester ran the testcase the first time, it worked as expected. Pick the correct statements: A: When the test case is ran the second time, the data entry for “Sid” already exists in the database. B: When the test case is ran the second time, it performs exactly as it did the first time C: The testcase is a good example for regression testing “Helen” D: The testcase is not a good example for regression testing “Helen” since the system behaves differently when the testcase is ran the second time
Medium Decision Table	Solve
Check the following decision table: What are the expected actions for following testcases? I: Joey's age is 22. He is a smoker residing in India II: Jennifer's age is 62. She is a non-smoker not residing in India A) I - Insure, 10% discount. II - Insure, no discount B) I - Don't insure. II - Don't insure C) I - Insure, no discount. II - Don't insure D) I - Insure, no discount. II - Insure, 10% discount
Easy Cart Checkout Incident Report	Solve
Review the following incident report written QA team of LWB, Little White Book (an e-commerce app): 1. Place any items in the cart (Say “Nike FST Men”). 2. Place any other (different) item in the shopping cart (Say “Nike Air Max”). 3. Remove “Nike FST Men” from the shopping cart, but leave “Nike Air Max” in the cart. 4. Click on “Check out” button. 5. Expect the app to display the check out screen, instead ‘No items in the shopping cart. Click continue to go back to shopping.’ error message is shown as a popup. 6. Click “Continue”. 7. Expect the app to go to shopping screen to add/remove items from the cart. Instead the app crashes. 8. The error in steps 5 and 7 occurred in every attempt of 5 attempts (1 2 3 4 and 6). Which of the following information is missing from the incident report?
Medium Async Await Promises Promises Async-Await	Solve
What will the following code output? A: 24 after 5 seconds and after another 5 seconds, another 24 B: 24 followed by another 24 immediately C: 24 immediately and another 24 after 5 seconds D: After 5 seconds, 24 and 24 E: Undefined F: NaN G: None of these
Medium Bitcoin prices Axios Promises	Solve
Review the following JavaScript code and pick the correct options: Assume that the API returns a successful 200 response code and a JSON object as the response body. What would the value of ‘a’ be after the code is executed?
Medium My Module Scope	Solve
What will the output of the following JavaScript code be?
Medium Promise Resolve Promises Async-Await	Solve
What does the following code output?
Easy Throw, Try, Async Promises Async-Await	Solve
What does the following JS code output?

	🧐 Question	🔧 Skill
	Easy Floating points	2 mins Jest	Solve
Check the following Jest tests: Which of the tests will pass?
	Medium Database testcase Regression Testing	2 mins Testing	Solve
Adaface is developing a new database system called “Helen”. The tester at Adaface developed the following testcase for regression testing: 1. Open Helen 2. Open “Students” database 3. Enter data for “Sid” 4. Set checkpoint 5. Store “Sid” data in “Students” 6. Restart Helen 7. Read “Sid” data from “Students” 8. Compare checkpoint with the contents When the tester ran the testcase the first time, it worked as expected. Pick the correct statements: A: When the test case is ran the second time, the data entry for “Sid” already exists in the database. B: When the test case is ran the second time, it performs exactly as it did the first time C: The testcase is a good example for regression testing “Helen” D: The testcase is not a good example for regression testing “Helen” since the system behaves differently when the testcase is ran the second time
	Medium Decision Table	3 mins Testing	Solve
Check the following decision table: What are the expected actions for following testcases? I: Joey's age is 22. He is a smoker residing in India II: Jennifer's age is 62. She is a non-smoker not residing in India A) I - Insure, 10% discount. II - Insure, no discount B) I - Don't insure. II - Don't insure C) I - Insure, no discount. II - Don't insure D) I - Insure, no discount. II - Insure, 10% discount
	Easy Cart Checkout Incident Report	2 mins Testing	Solve
Review the following incident report written QA team of LWB, Little White Book (an e-commerce app): 1. Place any items in the cart (Say “Nike FST Men”). 2. Place any other (different) item in the shopping cart (Say “Nike Air Max”). 3. Remove “Nike FST Men” from the shopping cart, but leave “Nike Air Max” in the cart. 4. Click on “Check out” button. 5. Expect the app to display the check out screen, instead ‘No items in the shopping cart. Click continue to go back to shopping.’ error message is shown as a popup. 6. Click “Continue”. 7. Expect the app to go to shopping screen to add/remove items from the cart. Instead the app crashes. 8. The error in steps 5 and 7 occurred in every attempt of 5 attempts (1 2 3 4 and 6). Which of the following information is missing from the incident report?
	Medium Async Await Promises Promises Async-Await	2 mins JavaScript	Solve
What will the following code output? A: 24 after 5 seconds and after another 5 seconds, another 24 B: 24 followed by another 24 immediately C: 24 immediately and another 24 after 5 seconds D: After 5 seconds, 24 and 24 E: Undefined F: NaN G: None of these
	Medium Bitcoin prices Axios Promises	2 mins JavaScript	Solve
Review the following JavaScript code and pick the correct options: Assume that the API returns a successful 200 response code and a JSON object as the response body. What would the value of ‘a’ be after the code is executed?
	Medium My Module Scope	2 mins JavaScript	Solve
What will the output of the following JavaScript code be?
	Medium Promise Resolve Promises Async-Await	2 mins JavaScript	Solve
What does the following code output?
	Easy Throw, Try, Async Promises Async-Await	2 mins JavaScript	Solve
What does the following JS code output?

	🧐 Question	🔧 Skill	💪 Difficulty	⌛ Time
	Floating points	Jest	Easy	2 mins	Solve
Check the following Jest tests: Which of the tests will pass?
	Database testcase Regression Testing	Testing	Medium	2 mins	Solve
Adaface is developing a new database system called “Helen”. The tester at Adaface developed the following testcase for regression testing: 1. Open Helen 2. Open “Students” database 3. Enter data for “Sid” 4. Set checkpoint 5. Store “Sid” data in “Students” 6. Restart Helen 7. Read “Sid” data from “Students” 8. Compare checkpoint with the contents When the tester ran the testcase the first time, it worked as expected. Pick the correct statements: A: When the test case is ran the second time, the data entry for “Sid” already exists in the database. B: When the test case is ran the second time, it performs exactly as it did the first time C: The testcase is a good example for regression testing “Helen” D: The testcase is not a good example for regression testing “Helen” since the system behaves differently when the testcase is ran the second time
	Decision Table	Testing	Medium	3 mins	Solve
Check the following decision table: What are the expected actions for following testcases? I: Joey's age is 22. He is a smoker residing in India II: Jennifer's age is 62. She is a non-smoker not residing in India A) I - Insure, 10% discount. II - Insure, no discount B) I - Don't insure. II - Don't insure C) I - Insure, no discount. II - Don't insure D) I - Insure, no discount. II - Insure, 10% discount
	Cart Checkout Incident Report	Testing	Easy	2 mins	Solve
Review the following incident report written QA team of LWB, Little White Book (an e-commerce app): 1. Place any items in the cart (Say “Nike FST Men”). 2. Place any other (different) item in the shopping cart (Say “Nike Air Max”). 3. Remove “Nike FST Men” from the shopping cart, but leave “Nike Air Max” in the cart. 4. Click on “Check out” button. 5. Expect the app to display the check out screen, instead ‘No items in the shopping cart. Click continue to go back to shopping.’ error message is shown as a popup. 6. Click “Continue”. 7. Expect the app to go to shopping screen to add/remove items from the cart. Instead the app crashes. 8. The error in steps 5 and 7 occurred in every attempt of 5 attempts (1 2 3 4 and 6). Which of the following information is missing from the incident report?
	Async Await Promises Promises Async-Await	JavaScript	Medium	2 mins	Solve
What will the following code output? A: 24 after 5 seconds and after another 5 seconds, another 24 B: 24 followed by another 24 immediately C: 24 immediately and another 24 after 5 seconds D: After 5 seconds, 24 and 24 E: Undefined F: NaN G: None of these
	Bitcoin prices Axios Promises	JavaScript	Medium	2 mins	Solve
Review the following JavaScript code and pick the correct options: Assume that the API returns a successful 200 response code and a JSON object as the response body. What would the value of ‘a’ be after the code is executed?
	My Module Scope	JavaScript	Medium	2 mins	Solve
What will the output of the following JavaScript code be?
	Promise Resolve Promises Async-Await	JavaScript	Medium	2 mins	Solve
What does the following code output?
	Throw, Try, Async Promises Async-Await	JavaScript	Easy	2 mins	Solve
What does the following JS code output?

Test candidates on core Jest Hiring Test topics

Data Layers: Data Layers in software development refer to the components or frameworks responsible for storing, retrieving, and manipulating data. This skill is measured in the test to assess the candidate's understanding and proficiency in data management and storage techniques.

Statistical Layers: Statistical Layers involve the use of statistical models and algorithms to analyze data and extract meaningful insights. This skill is important to measure as it assesses the candidate's ability to apply statistical techniques in data analysis and decision-making.

Initializers: Initializers in software development are functions or code blocks that are executed to initialize the state or setup of a program or application. This skill is measured to evaluate the candidate's understanding of initialization processes to ensure correct program initialization and setup.

Test Execution: Test Execution refers to the process of running and validating test cases against software or systems. Measuring this skill helps assess the candidate's ability to effectively execute tests, identify and report bugs, and ensure the quality and reliability of the software.

Mocha Backends: Mocha Backends are testing frameworks used in JavaScript for writing and executing test cases. This skill is measured to evaluate the candidate's knowledge of Mocha and their proficiency in setting up test environments and writing test cases using Mocha in JavaScript.

Computation Layer: The Computation Layer refers to the components or modules responsible for performing complex computations or calculations in software systems. This skill is important to measure as it assesses the candidate's ability to design and implement efficient algorithms and perform high-performance computations.

Utility Layers: Utility Layers in software development are modules or components that provide common functionalities or tools to support the main functionality of an application. This skill is measured to evaluate the candidate's understanding and experience in creating and using utility modules to enhance the functionality and maintainability of software systems.

CPU Backend with Native Extension: CPU Backend with Native Extension refers to the integration of CPU-centric processing capabilities and native extensions in software systems. This skill is measured to assess the candidate's expertise in optimizing code performance by utilizing CPU-specific optimizations and incorporating native extensions for increased efficiency and speed.

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