JUnit is one of the most popular unit testing frameworks explicitly built for the Java language. It is also one of the most widely used frameworks specifically for regression testing. JUnit is part of a family of unit testing frameworks known collectively as xUnit.
If you are a developer or tester who codes in Java, you’re expected to know answers to common JUnit interview questions at technical rounds of software engineering and testing interviews. To give you an understanding of the type of questions to expect at your upcoming interview, we’ve compiled a list of top JUnit interview questions for experienced java developers and freshers.
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Let’s go ahead and look at some common JUnit interview questions asked at testing and Java developer interviews. We’ll look at JUnit interview questions for experienced developers and freshers.
Here’s what we’ll cover in this article:
Knowing answers to commonly asked JUnit interview questions is important to set yourself apart in Java developer and tester interviews. Here are a few common JUnit interview questions and answers, followed by some sample JUnit interview questions asked specifically at interviews for freshers and junior programmers.
This is one of the most common JUnit interview questions asked at technical interviews.
Some prominent advantages of using JUnit include
This is another common JUnit interview question asked at Java developer and tester interviews.
Some core features of JUnit include:
The @Before annotation in JUnit executes initialization statements and preconditions before running the particular test case.
This is one of the most common JUnit interview questions asked at technical interviews. @ingores in JUnit ignore specific conditions and initialization statements while executing test cases.
The @RunWith annotation is used to run JUnit test cases with custom JUnit runners such as MockitoJUnitRunner, and SpringJUnit4ClassRunner. It also allows developers and testers to perform parameterized testing on the JUnit test framework.
In this section, we’ll look at some sample interview questions in JUnit, mostly asked at interviews for freshers.
As an experienced programmer, your knowledge of JUnit and other unit testing frameworks is evaluated in Java interviews.
To give you an idea of what to expect, we’ve compiled a list of common JUnit interview questions for experienced developers.
Practicing these JUnit interview questions will help you get interview-ready for your next Java developer/tester interview.
Q1. Which programming language is JUnit developed explicitly for?
JUnit is a unit testing framework specifically developed for Java. It is part of a family of unit testing frameworks known collectively as xUnit.
Q2. Where are JUnit interview questions typically asked?
JUnit interview questions are typically asked at Java developer and tester interviews. Questions are typically around the framework’s core features and functionalities.
Q4. What important topics should be prepared to answer JUnit coding interview questions?
JUnit interview questions at technical interviews are typically around JUnit test cases, annotations, methods, unit testing, regression testing, fixtures, and code coverages.
Q5. What is the average Java developer salary in the US?
The average Java developer salary in the United States is $97,343 per year, according to glassdoor.com
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