Mocha Online Test

Q: What are the main JavaScript tests?

Here are some important JavaScript tests: JavaScript Online Test JavaScript, HTML/CSS & React Test JavaScript & NodeJS Test

The Mocha Online Test uses scenario-based MCQs to evaluate candidates on their proficiency in writing unit tests for JavaScript applications using the Mocha testing framework. The test assesses candidates' understanding of topics such as test-driven development, assertion libraries, asynchronous testing, and test organization. Candidates are evaluated on their ability to use Mocha to write effective and efficient unit tests for JavaScript code, including using the appropriate syntax for assertions, running tests asynchronously, organizing tests into suites, and generating test reports.

Covered skills:

Data Layers
Statistical Layers
Initializers
Test Execution
Mocha Backends
Computation Layer
Utility Layers
CPU Backend with Native Extention

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About the Mocha Test

The Mocha Online 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 design and implement data layers effectively
Skilled in analyzing and manipulating statistical layers
Proficient in setting up and managing initializers
Capability to execute tests accurately
Familiarity with Mocha backends and their functionalities
Competence in working with computation layers
Proficiency in utilizing utility layers effectively
Knowledge of CPU backend with native extension

1200+ customers in 80 countries

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Non-googleable 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 Mocha Online Test will be non-googleable.

🧐 Question
Medium Database testcase Regression Testing Regression Testing In Specific Contexts Test Case Analysis	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 Asynchronous Programming	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 Javascript Es6 Closure	Solve
What will the output of the following JavaScript code be?
Medium Promise Resolve Promises Async-Await Code Analysis Syntax Understanding	Solve
What does the following code output?
Easy Throw, Try, Async Promises Async-Await Async/await	Solve
What does the following JS code output?

	🧐 Question	🔧 Skill
	Medium Database testcase Regression Testing Regression Testing In Specific Contexts Test Case Analysis	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 Asynchronous Programming	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 Javascript Es6 Closure	2 mins JavaScript	Solve
What will the output of the following JavaScript code be?
	Medium Promise Resolve Promises Async-Await Code Analysis Syntax Understanding	2 mins JavaScript	Solve
What does the following code output?
	Easy Throw, Try, Async Promises Async-Await Async/await	2 mins JavaScript	Solve
What does the following JS code output?

	🧐 Question	🔧 Skill	💪 Difficulty	⌛ Time
	Database testcase Regression Testing Regression Testing In Specific Contexts Test Case Analysis	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 Asynchronous Programming	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 Es6 Closure	JavaScript	Medium	2 mins	Solve
What will the output of the following JavaScript code be?
	Promise Resolve Promises Async-Await Code Analysis Syntax Understanding	JavaScript	Medium	2 mins	Solve
What does the following code output?
	Throw, Try, Async Promises Async-Await Async/await	JavaScript	Easy	2 mins	Solve
What does the following JS code output?

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We evaluated several of their competitors and found Adaface to be the most compelling. Great library of questions that are designed to test for fit rather than memorization of algorithms.

Swayam Narain, CTO, Affable

Why you should use Pre-employment Mocha Online Test?

The Mocha Online Test makes use of scenario-based questions to test for on-the-job skills as opposed to theoretical knowledge, ensuring that candidates who do well on this screening test have the relavant skills. The questions are designed to covered following on-the-job aspects:

Understanding and implementing data layers
Analyzing and interpreting statistical layers
Initializing and configuring components
Executing tests and analyzing results
Working with Mocha backends
Performing computations in the computation layer
Using utility layers for efficient operations
Utilizing CPU backend with Native Extension
Designing and optimizing data layers
Applying advanced statistical techniques

Once the test is sent to a candidate, the candidate receives a link in email to take the test. For each candidate, you will receive a detailed report with skills breakdown and benchmarks to shortlist the top candidates from your pool.

What topics are covered in the Mocha Online Test?

Data Layers: Data Layers involve creating, managing, and manipulating data structures within a software application. This skill is measured in the test to assess a candidate's ability to handle complex data structures and ensure efficient data management.

Statistical Layers: Statistical Layers refer to the techniques and methods used for analyzing and interpreting data to extract meaningful insights. This skill is included in the test to evaluate a candidate's proficiency in statistical analysis and their ability to derive valuable information from data sets.

Initializers: Initializers are responsible for setting up the necessary components and configurations of a program before it can run. This skill is measured in the test to assess a candidate's understanding of the initialization process and their ability to successfully set up a program for execution.

Test Execution: Test Execution refers to the process of running and evaluating software tests to ensure the functionality, reliability, and performance of a program. In this test, it is measured to gauge a candidate's expertise in executing tests and their familiarity with best practices for test execution.

Mocha Backends: Mocha Backends are the components responsible for processing and executing code written in the Mocha programming language. Measuring this skill aims to assess a candidate's proficiency in utilizing Mocha Backends and their ability to effectively implement Mocha code.

Computation Layer: The Computation Layer focuses on the mathematical calculations and algorithms used in a software program. This skill is included in the test to evaluate a candidate's aptitude in handling complex computations and their understanding of algorithmic principles.

Utility Layers: Utility Layers consist of various functions and tools that aid in the development and maintenance of software applications. This skill is measured in the test to assess a candidate's knowledge and proficiency in utilizing utility functions to enhance the functionality and efficiency of their code.

CPU Backend with Native Extension: A CPU Backend with Native Extension allows the execution of Mocha code to be optimized and accelerated by utilizing hardware capabilities. This skill is measured in the test to evaluate a candidate's ability to leverage CPU backends with native extensions to enhance the performance of their code.

Full list of covered topics

The actual topics of the questions in the final test will depend on your job description and requirements. However, here's a list of topics you can expect the questions for Mocha Online Test to be based on.

Data Layers

Data manipulation

Data analysis

Statistical Layers

Statistical analysis

Statistical modeling

Initializers

Setup and configuration

Initialization process

Test Execution

Test planning

Test case design

Test execution process

Mocha Backends

Backend setup

Backend configuration

Backend operations

Computation Layer

Mathematical computations

Algorithm implementation

Data processing

Utility Layers

Utility functions

Helper methods

Code optimization

CPU Backend

Native extension usage

Performance tuning

What roles can I use the Mocha Online Test for?

Node.js Software Engineer
Front-End Developer

How is the Mocha Online Test customized for senior candidates?

For intermediate/ experienced candidates, we customize the assessment questions to include advanced topics and increase the difficulty level of the questions. This might include adding questions on topics like

Customizing initializers for specific needs
Developing automated test execution strategies
Implementing custom Mocha backends
Optimizing computation layer for performance
Enhancing utility layers for better efficiency
Building and integrating native extensions
Defining and implementing database layers
Applying machine learning algorithms to data
Orchestrating workflows with complex initializers
Managing distributed test execution environments

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Custom Questions

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Multiple Question Sets

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Have questions about the Mocha Hiring Test?

What is Mocha Online Test?

The Mocha Online Test is designed to assess the knowledge and skills of candidates in various areas related to Mocha. It includes multiple-choice questions on Mocha, Testing, and JavaScript. It is used by recruiters to gauge the proficiency of candidates in these domains.

Can I combine Mocha Online Test with Testing questions?

Yes, recruiters can request a single custom test with multiple skills, including Testing. For more details on how we assess Testing skills, check the Testing Assessment.

What topics are evaluated in the Mocha Online Test?

The Mocha Online Test covers skills such as Data Layers, Statistical Layers, Initializers, Test Execution, Mocha Backends, Computation Layer, Utility Layers, and CPU Backend with Native Extension. For senior roles, it also assesses skills like customizing initializers, developing automated test execution strategies, and implementing custom Mocha backends.

How to use Mocha Online Test in my hiring process?

Use the Mocha Online Test as a pre-screening tool.

Add a link to the assessment in your job post.
Invite candidates by email.
Find skilled candidates earlier.

Can I test JavaScript and Mocha together?

Yes, you can test both JavaScript and Mocha together. This combination is recommended to get a comprehensive understanding of the candidate's skills. Check the JavaScript & Mocha Test for more information.

What are the main JavaScript tests?

Here are some important JavaScript tests:

Can I combine multiple skills into one custom assessment?

Yes, absolutely. Custom assessments are set up based on your job description, and will include questions on all must-have skills you specify. Here's a quick guide on how you can request a custom test.

Do you have any anti-cheating or proctoring features in place?

We have the following anti-cheating features in place:

Non-googleable questions
IP proctoring
Screen proctoring
Web proctoring
Webcam proctoring
Plagiarism detection
Secure browser
Copy paste protection

Read more about the proctoring features.

How do I interpret test scores?

The primary thing to keep in mind is that an assessment is an elimination tool, not a selection tool. A skills assessment is optimized to help you eliminate candidates who are not technically qualified for the role, it is not optimized to help you find the best candidate for the role. So the ideal way to use an assessment is to decide a threshold score (typically 55%, we help you benchmark) and invite all candidates who score above the threshold for the next rounds of interview.

What experience level can I use this test for?

Each Adaface assessment is customized to your job description/ ideal candidate persona (our subject matter experts will pick the right questions for your assessment from our library of 10000+ questions). This assessment can be customized for any experience level.

Does every candidate get the same questions?

Yes, it makes it much easier for you to compare candidates. Options for MCQ questions and the order of questions are randomized. We have anti-cheating/ proctoring features in place. In our enterprise plan, we also have the option to create multiple versions of the same assessment with questions of similar difficulty levels.

I'm a candidate. Can I try a practice test?

No. Unfortunately, we do not support practice tests at the moment. However, you can use our sample questions for practice.

What is the cost of using this test?

You can check out our pricing plans.

Can I get a free trial?

Yes, you can sign up for free and preview this test.

I just moved to a paid plan. How can I request a custom assessment?

Here is a quick guide on how to request a custom assessment on Adaface.

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Along with scorecards that report the performance of the candidate in detail, you also receive a comparative analysis against the company average and industry standards.

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