Go/Golang Online Test

Q: What are the main Go Programming tests?

Apart from Golang Online Test, you can also consider: Go Coding & Debugging Test Go Entry Level Algorithms Test Go Intermediate Level Algorithms Test

The Golang Online test uses scenario-based MCQs to evaluate candidates on their knowledge of the Go programming language, including concurrency, channels, types, and memory management. The test also includes a coding question to evaluate hands-on Golang programming skills. The aim of this test is to evaluate a candidate's experience in developing and deploying scalable and efficient applications using Go.

Covered skills:

Go Fundamentals
Variables and Types
Functions and Methods
Control Flow
Arrays and Slices
Structs and Interfaces
Concurrency and Channels
Error Handling and Testing
Packages and Libraries
File Handling
JSON and Web Services
Database Connectivity

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About the Go/Golang Test

The Go/Golang 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 Go fundamentals
Working with variables and types in Go
Creating and using functions and methods in Go
Applying control flow concepts in Go
Manipulating arrays and slices in Go
Utilizing structs and interfaces in Go
Implementing concurrency and using channels in Go
Handling errors and performing testing in Go
Working with packages and libraries in Go
Manipulating files in Go
Interacting with JSON and web services in Go
Establishing database connectivity in Go

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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 Golang Online Test will be non-googleable.

🧐 Question
Medium Defer, Panic, and Recover Control Flow Error Handling Panic And Recovery	Solve
Consider the following Go code snippet, where we're exploring the use of defer, panic, and recover: In this pseudo-code, badCall function is deliberately causing a panic. test function uses a deferred function to handle the panic and recover from it. What will the output of this code be when it is run?
Medium Go Maps Maps Map Iteration Go Syntax	Solve
Which of the following statements are true regarding the order of output for following Go code: A. Output will be ordered by values B. Output will be ordered by keys C. Output will be ordered randomly D. Output will be ordered by position in the code
Medium File Handling and Defer File Handling Go Syntax Understanding	Solve
Consider the following Go code. Where should we use defer?
Easy Go WaitGroup Concurrency Go Programming	Solve
What does the following Go code output?
Medium Mutex Locks Mutex Goroutines Concurrency	Solve
Consider the following Go program: What is the expected output of the final counter when the program is run?
Easy Registration Queue Logic Queues Sorting By Custom Order	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 String Parsing Character Counting	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 Defer, Panic, and Recover Control Flow Error Handling Panic And Recovery	2 mins Go	Solve
Consider the following Go code snippet, where we're exploring the use of defer, panic, and recover: In this pseudo-code, badCall function is deliberately causing a panic. test function uses a deferred function to handle the panic and recover from it. What will the output of this code be when it is run?
	Medium Go Maps Maps Map Iteration Go Syntax	2 mins Go	Solve
Which of the following statements are true regarding the order of output for following Go code: A. Output will be ordered by values B. Output will be ordered by keys C. Output will be ordered randomly D. Output will be ordered by position in the code
	Medium File Handling and Defer File Handling Go Syntax Understanding	2 mins Go	Solve
Consider the following Go code. Where should we use defer?
	Easy Go WaitGroup Concurrency Go Programming	2 mins Go	Solve
What does the following Go code output?
	Medium Mutex Locks Mutex Goroutines Concurrency	2 mins Go	Solve
Consider the following Go program: What is the expected output of the final counter when the program is run?
	Easy Registration Queue Logic Queues Sorting By Custom Order	30 mins Coding	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 String Parsing Character Counting	30 mins Coding	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	💪 Difficulty	⌛ Time
	Defer, Panic, and Recover Control Flow Error Handling Panic And Recovery	Go	Medium	2 mins	Solve
Consider the following Go code snippet, where we're exploring the use of defer, panic, and recover: In this pseudo-code, badCall function is deliberately causing a panic. test function uses a deferred function to handle the panic and recover from it. What will the output of this code be when it is run?
	Go Maps Maps Map Iteration Go Syntax	Go	Medium	2 mins	Solve
Which of the following statements are true regarding the order of output for following Go code: A. Output will be ordered by values B. Output will be ordered by keys C. Output will be ordered randomly D. Output will be ordered by position in the code
	File Handling and Defer File Handling Go Syntax Understanding	Go	Medium	2 mins	Solve
Consider the following Go code. Where should we use defer?
	Go WaitGroup Concurrency Go Programming	Go	Easy	2 mins	Solve
What does the following Go code output?
	Mutex Locks Mutex Goroutines Concurrency	Go	Medium	2 mins	Solve
Consider the following Go program: What is the expected output of the final counter when the program is run?
	Registration Queue Logic Queues Sorting By Custom Order	Coding	Easy	30 mins	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
	Visitors Count Strings Logic String Parsing Character Counting	Coding	Medium	30 mins	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.

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Why you should use Pre-employment Go/Golang Online Test?

The Golang 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 Go Fundamentals
Working with Variables and Types in Go
Implementing Functions and Methods in Go
Managing Control Flow in Go
Manipulating Arrays and Slices in Go
Utilizing Structs and Interfaces in Go
Understanding Concurrency and Channels in Go
Implementing Error Handling and Testing in Go
Working with Packages and Libraries in Go
Performing File Handling in Go

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 Go/Golang Online Test?

Go Fundamentals: Go Fundamentals is the foundation of programming in the Go language. It covers the basics of syntax, variables, data types, and control structures, enabling developers to write efficient and reliable code.

Variables and Types: Variables and Types in Go are crucial for understanding and manipulating data. They provide a way to store values and specify their type, allowing developers to perform calculations, data transformations, and comparisons.

Functions and Methods: Functions and Methods are essential concepts in Go for modularizing code and achieving reusability. They encapsulate a set of instructions or operations to perform a task, enhancing code readability and making it easier to maintain and debug.

Control Flow: Control Flow refers to how the execution of a program is managed based on specified conditions. It includes if-else statements, loops, and switch statements, which enable developers to control the flow of execution and make decisions based on different situations.

Arrays and Slices: Arrays and Slices provide ways to organize and manipulate collections of data in Go. They offer efficient storage and retrieval of elements, as well as capabilities for sorting, searching, and modifying data structures.

Structs and Interfaces: Structs and Interfaces are fundamental concepts for representing complex data structures and defining contracts in Go. Structs provide a way to group related data fields, while interfaces define a set of methods that a type must implement, enabling polymorphic behavior and code reuse.

Concurrency and Channels: Concurrency and Channels are vital for writing concurrent and parallel programs in Go. They allow multiple tasks to be executed concurrently, communicating and synchronizing through channels, enabling efficient resource utilization and improving overall performance.

Error Handling and Testing: Error Handling and Testing are essential for writing robust and reliable Go code. It involves techniques to handle and propagate errors, ensuring proper program execution, along with writing tests to validate the functionality of code and catch any potential issues.

Packages and Libraries: Packages and Libraries in Go provide modularization and code reuse. They allow developers to organize code into separate units of functionality, improving code maintainability and facilitating collaboration with other developers by providing a standard way to share code and dependencies.

File Handling: File Handling in Go involves reading, writing, and manipulating files. It allows developers to work with file systems, perform operations such as opening, closing, creating, and deleting files, as well as reading from and writing to files, enabling data storage and retrieval.

JSON and Web Services: JSON and Web Services are essential for building and consuming web APIs in Go. JSON is a standard data format for exchanging information between systems, while web services allow communication over the internet, enabling developers to create and interact with APIs, retrieve and manipulate data from external sources.

Database Connectivity: Database Connectivity in Go involves establishing connections, querying, and manipulating databases. It enables developers to interact with a database management system, perform operations such as creating, reading, updating, and deleting data, integrating Go applications with databases to store and retrieve data efficiently.

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 Golang Online Test to be based on.

Variables

Data Types

Constants

Operators

Control Structures

Loops

Functions

Methods

Arrays

Slices

Pointers

Structs

Interfaces

Concurrency

Channels

Error Handling

Testing

Packages

Libraries

File Handling

JSON

Web Services

Database Connectivity

Go Fundamentals

Go Syntax

Go Compilation

Go Binary Executable

Go Packages

Go Imports

Go Functions

Go Methods

Go Structs

Go Interfaces

Go Concurrency

Go Channels

Go Goroutines

Go Error Handling

Go Testing

Go File Handling

Go JSON Handling

Go Web Services

Go Routing

Go Middleware

Go HTTP Client

Go RESTful API

Go Database Connectivity

Go SQL

Go NoSQL

Go ORM

Go Query Builders

Go Database Migrations

Go Database Transactions

What roles can I use the Go/Golang Online Test for?

Golang Developer
Systems Engineer
Microservices Developer
Blockchain Developer

How is the Go/Golang 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

Utilizing JSON and Web Services in Go
Implementing Database Connectivity in Go
Applying Intermediate-level Go Concepts
Building Scalable Go Applications
Understanding Low-Level Go Programming
Optimizing Go Code for Performance
Implementing Network Programming in Go
Working with Goroutines and Channels
Utilizing Advanced Go Concurrency Patterns
Troubleshooting and Debugging Go Applications

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

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Have questions about the Go/Golang Hiring Test?

What is Golang Online Test?

The Golang Online Test is designed to assess the proficiency of candidates in Go programming language. It is used by recruiters to evaluate skills such as Go Fundamentals, Functions, Methods, and Concurrency.

Can I combine Golang Online Test with Database Connectivity questions?

Yes, you can request a custom test that includes both Golang and Database Connectivity questions. For more details on how we assess Database Connectivity skills, refer to our PostgreSQL Online Test.

What skills are evaluated in the Golang Online Test?

The test covers key skills including Go Fundamentals, Variables and Types, Functions and Methods, Control Flow, Arrays and Slices, Structs and Interfaces, Concurrency and Channels, Error Handling, Testing, Packages, Libraries, File Handling, JSON, Web Services, and Database Connectivity.

How to use Golang Online Test in my hiring process?

We recommend using this test as a pre-screening tool at the beginning of your recruitment process. You can share the test link in your job post or invite candidates directly via email.

Can I test Backend and Go together in a test?

Yes, you can assess both skills together. We recommend using our Backend Engineer Test for a comprehensive evaluation of backend development and Go skills.

What are the main Go Programming tests?

Apart from Golang Online Test, you can also consider:

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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