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About the test:

The Flutter and Dart Online test uses scenario-based MCQ questions to evaluate candidates' ability to design, build and debug adaptive Flutter Apps. The questions assess their experience using Flutter Widgets, navigating between multiple screens, handling user inputs, using Native device features such as camera, location and publishing to App stores. The test also has code-tracing MCQ questions to evaluate candidates' knowledge of the Dart programming language used in developing Flutter Apps.

Covered skills:

  • Dart programming
  • Flutter internals
  • Dart OOPs
  • Flutter built-in and custom widgets
See all covered skills

9 reasons why
9 reasons why

Adaface Flutter & Dart Test is the most accurate way to shortlist Flutter Developers



Reason #1

Tests for on-the-job skills

The Flutter Online test saves expensive engineering time by filtering out unqualified Flutter candidates from your hiring funnel. The Adaface Flutter Online test screens candidates for these standard Flutter and Dart skills hiring managers look for in a Flutter developer:

  • Fundamental Flutter concepts
  • Fundamental Dart concepts (lists, maps, enums, loops, classes etc)
  • Responsive and adaptive user interfaces in Flutter
  • Navigation between multiple screens (tabs, side drawers and stack-based navigation)
  • Flutter stateful and stateless widgets
  • Working with ListViews and multiple UI states
  • Working with user input and forms
  • State Management (setState, callbacks, global access)
  • Connecting Flutter app to backend servers by sending HTTP requests
  • Authenticating and logging in users
  • Using native device features (Camera, Maps, Location)
  • Using Firebase and related components (Notifications, Image uploads)
  • Publishing Flutter Apps in the Appstore and PlayStore
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.

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 Flutter & Dart Test will be non-googleable.

🧐 Question

Medium

Sliders
Widgets
Solve
Dinance is a crypto finance mobile app. The app is built using Flutter and uses Sliders at multiple places. Review the following two snippets of Sliders used in the app. How will the Sliders be displayed?
 image
A: Slider X is displayed as a continuous slider with values {0.0, 0.25, 0.5, 0.75, 1.0}
B: Slider X is displayed as a discrete slider with values {0.0, 0.25, 0.5, 0.75, 1.0}
C: Slider X is displayed as a discrete slider with values {0.0, 0.33, 0.67, 1.0}
D: Slider X is displayed as a discrete Slider with the values {0.0, 1.0, 2.0, 3.0, 4.0}

E: Slider Y is displayed as a discrete Slider with the thumb rightmost
F: Slider Y is displayed as a continuous Slider with thumb leftmost
G: Slider Y is displayed as a discrete Slider with values {0.0, 0.25, 0.5, 0.75, 1.0} with thumb left most
H: Slider Y is displayed as a continuous Slider with thumb rightmost

Medium

Vertical Wrap
UI Layout
Solve
Review the following Flutter code:
 image
The code produces the following UI:
 image
What will the UI look like if we add following properties to Wrap widget (after line 29):

textDirection: TextDirection.rtl
direction: Axis.vertical
 image

Medium

Analyzing StreamBuilder
StreamBuilder
ListView
Solve
Consider the below code:
 image
Analyze the given pseudocode and determine what will be displayed on the screen after the second emission of Stream (after 2 seconds).
A: CircularProgressIndicator will be displayed.
B: A ListView with 3 ListTile widgets, each displaying one item from the list ['Item1', 'Item2', 'Item3'].
C: Text widget with 'No Items Available' will be displayed.
D: A ListView with 0 ListTile widgets.
E: The code will throw an error.

Medium

Stateless and Stateful Widgets
Stateless Widgets
Stateful Widgets
Lifecycle Methods
Solve
Consider the following pseudocode:
 image
Review the pseudocode. What will be the output in the console when the application starts, the user clicks the 'Navigate' button to navigate to AnotherScreen and then navigates back to the ParentWidget?
 image

Medium

Handling Push Notifications
Push Notifications
Application State
Solve
In a Flutter application, you are using the firebase_messaging package to handle incoming FCM (Firebase Cloud Messaging) push notifications. Consider the pseudocode below:
 image
In the _handleNotification method, the application is supposed to navigate to a details page if the action key in the notification data is equal to 'navigate'. However, this might not work as expected if the app is in the background or terminated state when the notification is received and the user clicked on it.

How would you modify the _handleNotification method or handle the onMessage event to ensure that the navigation occurs when the user taps on the notification to open the app, no matter what state the app is in when the notification is received?
A: Use _firebaseMessaging.onMessageOpenedApp to handle navigation when the user taps the notification to open the app.
B: Use _firebaseMessaging.onLaunch to handle the navigation when the user taps the notification.
C: Check the message.messageType and navigate only if it is 'opened'.
D: Use _firebaseMessaging.onBackgroundMessage for handling navigation when the app is in the background.
E: Use a GlobalKey<NavigatorState> to handle navigation in _handleNotification.

Medium

Async Await
Asynchronous Programming
Solve
Review the following Dart code:
 image
The code reads data from a file synchronously. The code blocks while waiting for file I/O. Which of the following is the proper asynchronous version of the same code? 

- Assume readAsString is asynchronous version of readAsStringSync
- Lines with changes compared to original code are marked with // #
 image

Medium

Iterable Sync
Asynchronous Programming
Solve
What would the following Dart code print?
 image

Medium

Method Overriding
Constructors
Inheritance
Method Overriding
Solve
Consider the following Dart code:
 image
What will be the output of the above Dart code?
 image

Easy

Registration Queue
Logic
Queues
Solve
We want to register students for the next semester. All students have a receipt which shows the amount pending for the previous semester. A positive amount (or zero) represents that the student has paid extra fees, and a negative amount represents that they have pending fees to be paid. The students are in a queue for the registration. We want to arrange the students in a way such that the students who have a positive amount on the receipt get registered first as compared to the students who have a negative amount. We are given a queue in the form of an array containing the pending amount.
For example, if the initial queue is [20, 70, -40, 30, -10], then the final queue will be [20, 70, 30, -40, -10]. Note that the sequence of students should not be changed while arranging them unless required to meet the condition.
⚠️⚠️⚠️ Note:
- The first line of the input is the length of the array. The second line contains all the elements of the array.
- The input is already parsed into an array of "strings" and passed to a function. You will need to convert string to integer/number type inside the function.
- You need to "print" the final result (not return it) to pass the test cases.

For the example discussed above, the input will be:
5
20 70 -40 30 -10

Your code needs to print the following to the standard output:
20 70 30 -40 -10

Medium

Visitors Count
Strings
Logic
Solve
A manager hires a staff member to keep a record of the number of men, women, and children visiting the museum daily. The staff will note W if any women visit, M for men, and C for children. You need to write code that takes the string that represents the visits and prints the count of men, woman and children. The sequencing should be in decreasing order. 
Example:

Input:
WWMMWWCCC

Expected Output: 
4W3C2M

Explanation: 
‘W’ has the highest count, then ‘C’, then ‘M’. 
⚠️⚠️⚠️ Note:
- The input is already parsed and passed to a function.
- You need to "print" the final result (not return it) to pass the test cases.
- If the input is- “MMW”, then the expected output is "2M1W" since there is no ‘C’.
- If any of them have the same count, the output should follow this order - M, W, C.
🧐 Question🔧 Skill

Medium

Sliders
Widgets
4 mins
Flutter
Solve

Medium

Vertical Wrap
UI Layout
3 mins
Flutter
Solve

Medium

Analyzing StreamBuilder
StreamBuilder
ListView
3 mins
Flutter
Solve

Medium

Stateless and Stateful Widgets
Stateless Widgets
Stateful Widgets
Lifecycle Methods
2 mins
Flutter
Solve

Medium

Handling Push Notifications
Push Notifications
Application State
2 mins
Flutter
Solve

Medium

Async Await
Asynchronous Programming
3 mins
Dart
Solve

Medium

Iterable Sync
Asynchronous Programming
2 mins
Dart
Solve

Medium

Method Overriding
Constructors
Inheritance
Method Overriding
2 mins
Dart
Solve

Easy

Registration Queue
Logic
Queues
30 mins
Coding
Solve

Medium

Visitors Count
Strings
Logic
30 mins
Coding
Solve
🧐 Question🔧 Skill💪 Difficulty⌛ Time
Sliders
Widgets
Flutter
Medium4 mins
Solve
Vertical Wrap
UI Layout
Flutter
Medium3 mins
Solve
Analyzing StreamBuilder
StreamBuilder
ListView
Flutter
Medium3 mins
Solve
Stateless and Stateful Widgets
Stateless Widgets
Stateful Widgets
Lifecycle Methods
Flutter
Medium2 mins
Solve
Handling Push Notifications
Push Notifications
Application State
Flutter
Medium2 mins
Solve
Async Await
Asynchronous Programming
Dart
Medium3 mins
Solve
Iterable Sync
Asynchronous Programming
Dart
Medium2 mins
Solve
Method Overriding
Constructors
Inheritance
Method Overriding
Dart
Medium2 mins
Solve
Registration Queue
Logic
Queues
Coding
Easy30 minsSolve
Visitors Count
Strings
Logic
Coding
Medium30 minsSolve
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 Flutter & Dart 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 #6

1 click candidate invites

Email invites: You can send candidates an email invite to the Flutter & Dart 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

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


How is the test customized for Senior Flutter Developers?

The questions used for Senior Flutter developers focus on advanced topics requiring a few years of hands-on Flutter experience. Here are a few advanced topics/themes the questions would focus on:

  • Advanced Dart Object Oriented Programming
  • Running Native Swift, Objective-C, Java or Kotlin Code
  • Advanced Firebase and Firestore integration
  • Different approaches for loading and maintaining data in Flutter apps
  • Building offline-enabled apps with incredibly efficient data loading
  • Reactive programming (streams)
  • Optimizing network requests for improved performance on mobile networks
  • Storing long-term data on a user's physical device using SQLite
  • Designing complex animations
  • Visualizing data with charts
  • Handling Async Data with FutureBuilders, StreamBuilders, and Async / Await Functions
  • Image Caching for Performance

What roles can I use the Flutter & Dart Test for?

  • Flutter Developer
  • Mobile Developer - Flutter
  • Senior Flutter Developer
  • Front End Developer - Flutter
  • Software Developer - Flutter
  • Fresher Flutter Developer
  • Flutter Developer (2-3 years)

What topics are covered in the Flutter & Dart Test?

Dart fundamentals
Dart OOP
Flutter Widgets (Stateful and Stateless)
Custom Widgets
State Management
Firebase and Firestore
Navigation (tabs, drawers)
Handing forms
Storage and Databases
User Authentication
ListViews
Material Design
Handling Media
Streams and Futures
Using Native Device features
HTTP requests
Async Data
Streams
Animations and Transitions
Responsive Screens
Custom Themes and Fonts
Debugging
Publishing
Reactive Programming
Offline Support
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

FAQs

How is the test customized for Fresher Flutter Developers?

The questions for junior Flutter developers will be on a slightly easier level, and questions will be based on beginner/essential topics. Here are a few beginner skills the test will be based on:

  • Basics of Dart (Control flow, functions, If Statements, Logical Operators, For Loops)
  • Basics of Dart Object-oriented programming
  • Data Structures and Collections in Dart
  • Flutter basics
  • Navigation between multi-screen apps
  • Using in-built widgets and styling
  • Using popular third-party libraries like Material Design
  • Forms, input handling and validation
  • Making asynchronous API calls to store and retrieve data from the cloud
  • Using JSON format for server communication.
  • Fundamentals of state management

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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