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About the test:

The Swift iOS Test is designed to assess the candidate's knowledge of Swift programming language and its application in iOS development. The test uses scenario-based MCQs to evaluate the candidate's proficiency in key areas like syntax, memory management, protocols, and frameworks like UIKit, Foundation, and Core Data. The test also includes a coding question to evaluate hands-on programming skills.

Covered skills:

  • Swift Syntax
  • Error handling in Swift
  • Networking in iOS
  • Core Data framework
  • Swift Programming
  • Memory management in Swift
  • Data structures in Swift
  • User Interface design in iOS
  • Concurrency in iOS

9 reasons why
9 reasons why

Adaface Swift & iOS Test is the most accurate way to shortlist iOS Developers



Reason #1

Tests for on-the-job skills

The Swift & iOS 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:

  • Understanding and applying Swift syntax effectively
  • Managing memory in Swift efficiently
  • Handling exceptions and errors in Swift accurately
  • Working with various data structures in Swift
  • Implementing networking in iOS applications
  • Designing user interfaces in iOS effectively
  • Utilizing the Core Data framework for data management
  • Understanding and implementing concurrency in iOS
  • Proficient in Swift programming
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 Swift & iOS Test will be non-googleable.

🧐 Question

Medium

Data Provider DispatchQueue
Closures
Asychronous operations.
Solve
Consider the following code snippet:
 image
What will be printed after the code execution?

Medium

Property Observers
OOPs
Solve
Consider the following Swift code snippet:
 image
What does the code print after execution?
A) 800, -100, 80, 80
B) 800, 800, 80, 72
C) 1000, 800, 100, 72
D) 800, 800, 80, 80
E) 800, 0, 80, 80

Medium

Class Destructor
OOPs
Solve
What does the following Swift code output?
 image

Easy

Defer blocks
Solve
What does the following Swift code output?
 image

Easy

Lazy Variables
Solve
What does the following Swift code output?
 image

Medium

Completion Handlers
Views
Animations
Solve
Consider the following iOS (Swift) code snippet:
 image
What will happen when this view controller appears?

A) The squareView will move 100 points to the right instantly and then change its background color to blue.
B) The squareView will not move, and its background color will not change.
C) The squareView will change its background color to blue instantly and then move 100 points to the right over 1 second.
D) The squareView will move 100 points to the right and change its background color to blue simultaneously over 1 second.
E) The squareView will move 100 points to the right over 1 second, and the background color will change to blue after 1 second.

Medium

UI Responder Chain
UI
Views
Interaction.
Solve
Consider the following iOS (Swift) code snippet:
 image
When the user taps on the CustomButton, what will be the output? Note that UIButton is a subclass of UIControl by default.

A) Only "CustomButton touchesBegan" will be printed.
B) "CustomButton touchesBegan" and "CustomView touchesBegan" will be printed.
C) "CustomButton touchesBegan", "CustomView touchesBegan", and "ViewController touchesBegan" will be printed.
D) "CustomButton touchesBegan" and "ViewController touchesBegan" will be printed.
E) No output will be printed.

Medium

ViewController Buggy Code
Solve
Here's two different ways to write the same code in iOS (Swift):
 image
Which of the following statements are correct?
 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

Data Provider DispatchQueue
Closures
Asychronous operations.

3 mins

Swift
Solve

Medium

Property Observers
OOPs

2 mins

Swift
Solve

Medium

Class Destructor
OOPs

2 mins

Swift
Solve

Easy

Defer blocks

2 mins

Swift
Solve

Easy

Lazy Variables

2 mins

Swift
Solve

Medium

Completion Handlers
Views
Animations

2 mins

iOS
Solve

Medium

UI Responder Chain
UI
Views
Interaction.

3 mins

iOS
Solve

Medium

ViewController Buggy Code

3 mins

iOS
Solve

Easy

Registration Queue
Logic
Queues

30 mins

Coding
Solve

Medium

Visitors Count
Strings
Logic

30 mins

Coding
Solve
🧐 Question🔧 Skill💪 Difficulty⌛ Time
Data Provider DispatchQueue
Closures
Asychronous operations.
Swift
Medium3 mins
Solve
Property Observers
OOPs
Swift
Medium2 mins
Solve
Class Destructor
OOPs
Swift
Medium2 mins
Solve
Defer blocks
Swift
Easy2 mins
Solve
Lazy Variables
Swift
Easy2 mins
Solve
Completion Handlers
Views
Animations
iOS
Medium2 mins
Solve
UI Responder Chain
UI
Views
Interaction.
iOS
Medium3 mins
Solve
ViewController Buggy Code
iOS
Medium3 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 Swift & iOS 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 Swift & iOS 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 Swift & iOS Assessment Test

Why you should use Pre-employment Swift & iOS Online Test?

The Swift & iOS 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:

  • Swift Syntax
  • Memory management in Swift
  • Error handling in Swift
  • Data structures in Swift
  • Networking in iOS
  • User Interface design in iOS
  • Core Data framework
  • Concurrency in iOS
  • Swift Programming
  • Integrating Swift code with Objective-C

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 Swift & iOS Online Test?

  • Swift Syntax

    Swift Syntax refers to the rules and structure of the Swift programming language. It encompasses the various components such as variables, functions, control flow, and object-oriented concepts that enable developers to write efficient and readable code.

  • Memory management in Swift

    Memory management in Swift involves managing the allocation and deallocation of memory resources to ensure efficient memory usage and prevent memory leaks in applications. It includes concepts such as reference counting, automatic memory management with ARC (Automatic Reference Counting), and strong, weak, and unowned references.

  • Error handling in Swift

    Error handling in Swift allows developers to handle, propagate, and recover from errors gracefully. It involves using mechanisms like do-catch blocks, throwing and catching errors, and handling different types of errors, such as runtime errors and domain-specific errors.

  • Data structures in Swift

    Data structures in Swift represent the organization and storage of data in memory. They provide efficient ways to store, access, and manipulate data. Common data structures include arrays, dictionaries, stacks, queues, and linked lists.

  • Networking in iOS

    Networking in iOS involves the integration of network connectivity and communication in iOS applications. It includes concepts such as making HTTP/HTTPS requests, handling response data, implementing RESTful APIs, and using libraries like URLSession or Alamofire for network operations.

  • User Interface design in iOS

    User Interface design in iOS focuses on creating visually appealing, intuitive, and user-friendly interfaces for iOS applications. It involves using the UIKit framework, designing layouts with constraints and auto layout, implementing user interactions, and incorporating design principles to provide a seamless user experience.

  • Core Data framework

    The Core Data framework in iOS provides an object-oriented approach to managing the model layer of an application. It enables developers to store, retrieve, and manipulate data as objects, while handling complex data relationships and providing features like data persistence, versioning, and automatic change tracking.

  • Concurrency in iOS

    Concurrency in iOS involves simultaneously executing multiple tasks or operations to enhance application performance and responsiveness. It includes concepts such as multithreading, Grand Central Dispatch (GCD), operation queues, and synchronization techniques to manage concurrent execution and avoid race conditions.

  • Swift Programming

    Swift Programming encompasses the overall knowledge and proficiency in the Swift language, covering the syntax, language features, best practices, and development techniques. It includes understanding concepts like optionals, closures, generics, protocols, and advanced language features that enable developers to write efficient and maintainable Swift 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 Swift & iOS Test to be based on.

    Variables
    Constants
    Optionals
    Control Flow
    Functions
    Closures
    Classes
    Structures
    Enums
    Memory Allocation
    Automatic Reference Counting (ARC)
    Memory Leaks
    Error Handling
    Exception Handling
    Arrays
    Dictionaries
    Sets
    Linked Lists
    Stacks
    Queues
    Binary Trees
    Graphs
    HTTP Requests
    RESTful APIs
    JSON Parsing
    URLSession
    Alamofire
    Auto Layout
    Storyboard
    XIB
    Table Views
    Collection Views
    Core Data Basics
    Entity Relationship
    Fetching Data
    Updating Data
    Deleting Data
    Multithreading
    Grand Central Dispatch (GCD)
    Operation Queues
    Dispatch Groups
    Concurrency Issues
    Delegates
    Protocols
    Extensions
    Generics
    Inheritance
    Polymorphism
    Option Sets
    Operator Overloading
    Access Control
    Type Casting
    Tuples
    String Manipulation
    Error Types
    Asynchronous Programming
    Networking Concepts
    Unit Testing
    Debugging
    Continuous Integration
    Automated Testing
    Code Documentation
    Swift Package Manager

What roles can I use the Swift & iOS Online Test for?

  • iOS Developer
  • Mobile App Developer
  • Swift Developer
  • iOS Engineer

How is the Swift & iOS 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

  • Unit testing in Swift
  • Performance optimization in Swift
  • Multithreading in iOS
  • Debugging and troubleshooting in iOS
  • App store submission process
  • Memory leaks detection and prevention in Swift
  • Local and remote notifications in iOS
  • Caching mechanisms in iOS
  • Code version control using Git
  • Internationalization and localization in iOS

The coding question for experienced candidates will be of a higher difficulty level to evaluate more hands-on experience.

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

Swift & iOS 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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