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About the 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
  • Initializers
  • Mocha Backends
  • Utility Layers
  • Statistical Layers
  • Test Execution
  • Computation Layer
  • CPU Backend with Native Extention

9 reasons why
9 reasons why

Adaface Mocha Test is the most accurate way to shortlist Node.js Software Engineers



Reason #1

Tests for on-the-job skills

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
Reason #2

No trick questions

no trick questions

Traditional assessment tools use trick questions and puzzles for the screening, which creates a lot of frustration among candidates about having to go through irrelevant screening assessments.

View sample questions

The main reason we started Adaface is that traditional pre-employment assessment platforms are not a fair way for companies to evaluate candidates. At Adaface, our mission is to help companies find great candidates by assessing on-the-job skills required for a role.

Why we started Adaface
Reason #3

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 10,000+ questions. The actual questions on this Mocha Online Test will be non-googleable.

🧐 Question

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:
 image
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?
 image
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: 
 image
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?
 image
 image

Medium

Promise Resolve
Promises
Async-Await
Solve
What does the following code output? 
 image

Easy

Throw, Try, Async
Promises
Async-Await
Solve
What does the following JS code output?
 image
🧐 Question🔧 Skill

Medium

Database testcase
Regression Testing

2 mins

Testing
Solve

Medium

Decision Table

3 mins

Testing
Solve

Easy

Cart Checkout
Incident Report

2 mins

Testing
Solve

Medium

Async Await Promises
Promises
Async-Await

2 mins

JavaScript
Solve

Medium

Bitcoin prices
Axios
Promises

2 mins

JavaScript
Solve

Medium

My Module
Scope

2 mins

JavaScript
Solve

Medium

Promise Resolve
Promises
Async-Await

2 mins

JavaScript
Solve

Easy

Throw, Try, Async
Promises
Async-Await

2 mins

JavaScript
Solve
🧐 Question🔧 Skill💪 Difficulty⌛ Time
Database testcase
Regression Testing
Testing
Medium2 mins
Solve
Decision Table
Testing
Medium3 mins
Solve
Cart Checkout
Incident Report
Testing
Easy2 mins
Solve
Async Await Promises
Promises
Async-Await
JavaScript
Medium2 mins
Solve
Bitcoin prices
Axios
Promises
JavaScript
Medium2 mins
Solve
My Module
Scope
JavaScript
Medium2 mins
Solve
Promise Resolve
Promises
Async-Await
JavaScript
Medium2 mins
Solve
Throw, Try, Async
Promises
Async-Await
JavaScript
Easy2 mins
Solve
Reason #4

1200+ customers in 75 countries

customers in 75 countries
Brandon

With Adaface, we were able to optimise our initial screening process by upwards of 75%, freeing up precious time for both hiring managers and our talent acquisition team alike!


Brandon Lee, Head of People, Love, Bonito

Reason #5

Designed for elimination, not selection

The most important thing while implementing the pre-employment Mocha Online Test in your hiring process is that it is an elimination tool, not a selection tool. In other words: you want to use the test to eliminate the candidates who do poorly on the test, not to select the candidates who come out at the top. While they are super valuable, pre-employment tests do not paint the entire picture of a candidate’s abilities, knowledge, and motivations. Multiple easy questions are more predictive of a candidate's ability than fewer hard questions. Harder questions are often "trick" based questions, which do not provide any meaningful signal about the candidate's skillset.

Science behind Adaface tests
Reason #6

1 click candidate invites

Email invites: You can send candidates an email invite to the Mocha Online Test from your dashboard by entering their email address.

Public link: You can create a public link for each test that you can share with candidates.

API or integrations: You can invite candidates directly from your ATS by using our pre-built integrations with popular ATS systems or building a custom integration with your in-house ATS.

invite candidates
Reason #7

Detailed scorecards & benchmarks

View sample scorecard
Reason #8

High completion rate

Adaface tests are conversational, low-stress, and take just 25-40 mins to complete.

This is why Adaface has the highest test-completion rate (86%), which is more than 2x better than traditional assessments.

test completion rate
Reason #9

Advanced Proctoring


Learn more

About the Mocha Assessment Test

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
Singapore government logo

The hiring managers felt that through the technical questions that they asked during the panel interviews, they were able to tell which candidates had better scores, and differentiated with those who did not score as well. They are highly satisfied with the quality of candidates shortlisted with the Adaface screening.


85%
reduction in screening time

Mocha Hiring Test FAQs

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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40 min tests.
No trick questions.
Accurate shortlisting.
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