SOLID Principles Online Test

Q: What are the main Software Engineering tests?

We provide various software engineering tests, such as: Software Developer Test Software System Design Online Test Coding: Entry-Level Algorithms Test

The Solid Principles Test uses scenario-based multiple choice questions to evaluate candidates on their understanding of the SOLID design principles for object-oriented software development. The test assesses candidates' proficiency in applying SOLID principles to write maintainable, extensible, and testable code, including topics such as single responsibility principle (SRP), open-closed principle (OCP), Liskov substitution principle (LSP), interface segregation principle (ISP), dependency inversion principle (DIP), and the SOLID design patterns.

Covered skills:

Open Closed Principle (OCP)
Interface Segregation Principle (ISP)
Dependency Inversion Principle (DIP)
Single Responsibility Principle (SRP)
Liskov Substitution Principle (LSP)
Inversion of Control
Violation in SRP
Cohesion and Encapsulation

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About the SOLID Principles Test

The SOLID Principles 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 the Open Closed Principle (OCP)
Implementing interfaces to adhere to the Interface Segregation Principle (ISP)
Applying the Dependency Inversion Principle (DIP) to decouple components
Designing classes and modules with a single responsibility, following the Single Responsibility Principle (SRP)
Ensuring proper inheritance and substitutability with the Liskov Substitution Principle (LSP)
Utilizing Inversion of Control (IoC) containers for managing object dependencies
Identifying and resolving violations of the Single Responsibility Principle (SRP)
Ensuring high cohesion and encapsulation in code design

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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 SOLID Principles Test will be non-googleable.

🧐 Question
Easy Paint says Bye! Solid Principle Application Object-oriented Programming Concepts	Solve
Which SOLID principle is followed by the given code snippet?

	🧐 Question	🔧 Skill
	Easy Paint says Bye! Solid Principle Application Object-oriented Programming Concepts	2 mins SOLID	Solve
Which SOLID principle is followed by the given code snippet?

	🧐 Question	🔧 Skill	💪 Difficulty	⌛ Time
	Paint says Bye! Solid Principle Application Object-oriented Programming Concepts	SOLID	Easy	2 mins	Solve
Which SOLID principle is followed by the given code snippet?

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Why you should use Pre-employment SOLID Principles Online Test?

The SOLID Principles 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 applying the Open Closed Principle
Designing interfaces based on the Interface Segregation Principle
Implementing dependency inversion in software design
Developing code following the Single Responsibility Principle
Ensuring adherence to the Liskov Substitution Principle
Utilizing Inversion of Control in software architecture
Identifying violations of the Single Responsibility Principle
Establishing high cohesion and encapsulation in code
Implementing testability and maintainability in software
Applying SOLID principles to optimize software design

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 SOLID Principles Online Test?

Open Closed Principle (OCP): The Open Closed Principle (OCP) states that software entities (classes, modules, functions, etc.) should be open for extension, but closed for modification. This means that new functionality can be added without changing the existing code, making the software more maintainable and robust.

Interface Segregation Principle (ISP): The Interface Segregation Principle (ISP) states that clients should not be forced to depend on interfaces they do not use. By creating smaller, cohesive interfaces, this principle helps to prevent a class from implementing unnecessary methods, reducing complexity and improving code readability.

Dependency Inversion Principle (DIP): The Dependency Inversion Principle (DIP) states that high-level modules should not depend on low-level modules. Instead, both should depend on abstractions. By using interfaces or abstract classes to define the dependencies, this principle promotes loose coupling, making the code more flexible, testable, and easier to maintain.

Single Responsibility Principle (SRP): The Single Responsibility Principle (SRP) states that a class should have only one reason to change. By separating concerns and assigning each class a single responsibility, this principle improves code organization, readability, and maintainability.

Liskov Substitution Principle (LSP): The Liskov Substitution Principle (LSP) states that objects of a superclass should be replaceable with objects of its subclasses, without affecting the correctness of the program. This principle ensures that inheritance is used correctly, avoiding unexpected behavior and allowing the code to be extended without breaking existing functionality.

Inversion of Control: Inversion of Control (IoC) is a design principle that refers to the external control of an object's lifecycle, rather than the object itself managing its dependencies and resources. This principle enables loose coupling, promotes modularity, and simplifies testing and maintenance.

Violation in SRP: A violation of the Single Responsibility Principle (SRP) occurs when a class has multiple responsibilities, making it difficult to understand, maintain, and reuse. This measurement helps identify classes that may require refactoring to adhere to the principle, improving code quality and reducing complexity.

Cohesion and Encapsulation: Cohesion refers to the degree to which the elements of a module or class are related to each other. Encapsulation refers to the bundling of related data and behavior into a single entity, such as a class. Measuring cohesion and encapsulation helps assess the design and organization of the code, ensuring high cohesion and strong encapsulation for better maintainability and extensibility.

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 SOLID Principles Test to be based on.

OCP

Interface Segregation

Dependency Inversion

Single Responsibility

Liskov Substitution

Inversion of Control

SRP Violation

Cohesion

Encapsulation

What roles can I use the SOLID Principles Online Test for?

Software Developer
Software Engineer
Full Stack Developer
Front-end Developer
Back-end Developer

How is the SOLID Principles 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

Facilitating reusable and modular code development
Creating flexible and extensible software architectures
Managing dependencies and abstractions in code
Utilizing abstraction layers in software components
Designing systems with low coupling and high cohesion
Applying design patterns to solve software design problems
Implementing separation of concerns in software modules
Refactoring code to improve SOLID principle adherence
Identifying and resolving code smells and anti-patterns
Ensuring code flexibility and scalability in software

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Have questions about the SOLID Principles Hiring Test?

What is SOLID Principles Test?

The SOLID Principles Test assesses knowledge of the SOLID design principles for software development. It is used by recruiters and hiring managers to evaluate candidates' ability to create maintainable, scalable, and flexible code.

Can I combine SOLID Principles Test with Software System Design questions?

Yes, you can request a custom test that includes the SOLID Principles and Software System Design skills. For more about the Software System Design test, visit our Software System Design Online Test.

What topics are evaluated in the SOLID Principles Test?

The test covers Open Closed Principle (OCP), Interface Segregation Principle (ISP), Dependency Inversion Principle (DIP), Single Responsibility Principle (SRP), Liskov Substitution Principle (LSP), Inversion of Control, Violation in SRP, Cohesion and Encapsulation.

How to use SOLID Principles Test in my hiring process?

Use this assessment at the start of your hiring process. Link the test in your job post or directly invite candidates via email. Adaface streamlines your hiring by identifying top skills early.

Can I test SOLID Principles and Technical Aptitude together in a test?

Yes, you can. Combining SOLID Principles with Technical Aptitude gives a comprehensive evaluation of a candidate's skills. Learn more about our Technical Aptitude Test.

What are the main Software Engineering tests?

We provide various software engineering tests, such as:

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?

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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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