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React Native Online Test (React Native + JavaScript)

About the test:

The React Native Test uses scenario-based MCQ questions to evaluate a candidate's ability to build interactive, media-rich React Native applications and publish them using Google/ App stores. The questions assess core React Native concepts (components, state and props), state management fundamentals, accessing native features and proper usage of RESTful APIs. The test also has MCQs and coding questions to evaluate hands-on JavaScript programming skills.

Covered skills:

  • Core React Native (components; state; props)
  • Handling screen layouts
  • Functional components and Hooks
  • Styled-components
See all covered skills

9 reasons why
9 reasons why

Adaface React Native Online Test (React Native + JavaScript) is the most accurate way to shortlist React Native Developers



Reason #1

Tests for on-the-job skills

The React Native test evaluates the following React Native topics expected by hiring managers from React Native developers:

  • How to use React, JavaScript and native components
  • Core React Native concepts, such as working with components, state, and props
  • Navigation in React Native apps
  • Styling and animating React Native components- styled-components and native styling
  • Latest React-Native features- Hooks, Context API, AsyncStorage
  • Using native phone capabilities like Camera and Vibration
  • Google Maps API and adding interactive maps
  • Connecting to a backend server from your app- Asynchronous APIs for fetching and updating
  • Security- Authentication, restricting routes
  • Installing Custom Fonts

Additionally, the assessment has MCQ and coding questions to evaluate hands-on JavaScript coding skills. It reduces the administrative overhead of interviewing too many candidates and saves expensive engineering time by filtering out unqualified candidates.

Reason #2

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.

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.

These are just a small sample from our library of 10,000+ questions. The actual questions on this React Native Online Test will be non-googleable.

🧐 Question

Medium

Fallback Error
Error Boundaries
Solve
                        Review the following React Native Code:
                        
 image
                        We have two ErrorBoundary classes. Notice that both MyComponent and ErrorBoundaryOne throw errors. What ‘Text’ would be rendered in the screen?
                        

Easy

Flex
Solve
                        What is the best way to create following React Native layout with containers 1,2,3?
                        
 image
 image

Medium

Home and Details Screen
Navigation
Solve
                        Review the following React Native code:
                        
 image
                        The app has two screens (Home and Details) as shown below:
                        
 image
 image
                        Review the following tests:

Test 1 - Click on ‘Navigate.navigate(’Details’)’ button on Home screen, then the same button on the Details screen. Then click on the “back” button of the device/screen.

Test 2 - Click on ‘Navigate.push(’Details’)’ button on Home screen, then the same button on the Details screen. Then we clicked on the “back” button of the device/screen.

Test 3 - Click on ‘Navigate.navigate(’Details’)’ button on Home screen, then ‘Navigate.push(’Details’)’ button on the Details screen. Then click on the “back” button of the device/ screen.

Test 4 - Click on ‘Navigate.push(’Details’)’ button on Home screen, then ‘Navigate.navigate(’Details’)’ button on the Details screen. Then click on the “back” button of the device/ screen.
                        Pick the correct statements:
                        

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

Easy

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

Medium

Longest Road
logic
hashmaps
Solve
                        A startup company E-Motors is building driverless automated cars. The car contains a sensor that checks the road quality for the next N meters to decide the optimal speed at which the cars should move. We are given recorded data by the sensor in the form of an array, where each element of the array is the rating given to 1 meter of the road in sequence. 

The rating given by the sensor is from 1 to 100, where 100 represents the road with the best condition, and any rating above 60 is optimal. Find the longest stretch of road in meters that is categorized as optimal by the sensor.

The input is an array of "strings" which needs to be converted from string to integer/number inside the function.
🧐 Question🔧 Skill

Medium

Fallback Error
Error Boundaries
3 mins
React Native
Solve

Easy

Flex
2 mins
React Native
Solve

Medium

Home and Details Screen
Navigation
3 mins
React Native
Solve

Medium

Async Await Promises
Promises
Async-Await
2 mins
JavaScript
Solve

Easy

Promise Resolve
Promises
Async-Await
2 mins
JavaScript
Solve

Easy

Throw, Try, Async
Promises
Async-Await
2 mins
JavaScript
Solve

Medium

Longest Road
logic
hashmaps
25 mins
Coding
Solve
🧐 Question🔧 Skill💪 Difficulty⌛ Time
Fallback Error
Error Boundaries
React Native
Medium3 mins
Solve
Flex
React Native
Easy2 mins
Solve
Home and Details Screen
Navigation
React Native
Medium3 mins
Solve
Async Await Promises
Promises
Async-Await
JavaScript
Medium2 mins
Solve
Promise Resolve
Promises
Async-Await
JavaScript
Easy2 mins
Solve
Throw, Try, Async
Promises
Async-Await
JavaScript
Easy2 mins
Solve
Longest Road
logic
hashmaps
Coding
Medium25 minsSolve
Reason #4

1200+ 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

1 click candidate invites

Email invites: You can send candidates an email invite to the React Native 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.

Reason #6

Detailed scorecards & comparative results

Reason #7

Designed for elimination, not selection

The most important thing while implementing the pre-employment React Native 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.

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.

Reason #9

Advanced Proctoring


Along with React Native, what skills are tested in this test

The test identifies candidates who have the following skills that go hand-in-hand with React Native skills for React Native App development:

  • Solid knowledge of JavaScript
  • Thorough understanding of native iOS and Android development
  • Deep knowledge of basic React assumptions
  • Performance optimisation skills
  • Knowledge of data structures
  • Familiarity with JS developer basics such as HTML 5, CSS 3, pre-processors
  • Experience with writing unit and functional tests
  • Ability to write reusable code

How is the test customized for Senior React Native developers?

The questions will be of a higher difficulty level and advanced topics will be evaluated. Here are a few advanced topics we use to design questions for intermediate/ experienced candidates:

  • Advanced State Management with Context
  • Working with Old Versions of React Native
  • Handling payments
  • Authentication and user account management using Firebase
  • Performance optimizations like pagination and lazy loading data
  • Deduping multiple requests for the same data into a single request
  • Managing memory and garbage collection of server state
  • Memoizing query results with structural sharing
  • Handling offline functionality with Redux Persist (Offline Data Persistence)
  • Cross-platform Push Notifications
  • Handling gestures

What roles can I use the React Native Online Test for?

  • React Native Developer
  • React Native Mobile Developer
  • React Native iOS Developer
  • Senior Software Developer (React Native)
  • React Native Engineer
  • Android Developer (React Native)
  • React Native Lead
  • Senior Mobile Developer (React Native)

What topics are covered in the React Native Online Test (React Native + JavaScript)?

Components
Lists
Layouts
Navigation
Hooks
Context
Publishing/ Distributing
APIs
State management
Camera
Maps
AsyncStorage
Animations
SessionStorage
Custom fonts
Expo
Gestures
Notifications
Permissions
Offline
Authentication
Cache
Flexbox
Fonts
State
Props
Redux
Images
Virtual DOM
FlexBox
ES6
TypeScript
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

React Native Online Test FAQs

Can I evaluate JavaScript and React Native skills in the same assessment?

Yes. You can check our standard JavaScript test to get a sense of JavaScript questions.

Can I evaluate Android and React Native skills in the same assessment?

Yes. You can evaluate Android and React Native skills in the same assessment. You can review our standard Android test to get a sense of what kind of questions will be included. The final assessment will include questions to evaluate JavaScript, Android, React Native and coding skills in the same test.

Can I evaluate iOS and React Native skills in the same assessment?

Yes. You can evaluate iOS and React Native skills in the same assessment. You can review our standard iOS test to get a sense of what kind of questions will be included. The final assessment will include questions to evaluate JavaScript, iOS, React Native and coding skills in the same test.

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.

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
  • Web proctoring
  • Webcam proctoring
  • Plagiarism detection
  • Secure browser

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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Try the most candidate friendly skills assessment tool today.
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40 min tests.
No trick questions.
Accurate shortlisting.
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