JUnit Quiz MCQ’s – JUnit Online Test Questions and Answers

Join Telegram
Join Whatsapp Groups

JUnit is the unit testing framework for Java programming language. JUnit Quiz multiple choice questions and answers are provided in this post. So interested candidates can practice these MCQ’s from our portal. The JUnit language is the open source framework that is used for writing and running tests. This language promotes the idea of “testing first” rather than implementing. Practicing this JUnit Quiz helps the individuals to speed up their performance at the time of facing the online exams. And this is used for the interview purposes too. Furthermore, this JUnit MCQ Online Test included in the post contains various questions. So having these questions will help the aspirants in cracking the exam quickly. Moreover, to enter into any professional field having an idea of the particular language is essential. Also, this is the trending language.

JUnit Quiz Details

JUnit MCQ Quiz Instructions

• JUnit MCQ Online Test comprises of 14 Questions.
• And the Time duration of the examination is unlimited (i.e. no time limit).
• Also, each question is awarded 1 mark and aspirant should note that there is no negative marking.
• Moreover, have a hit on the ‘Submit Test’ button visible at the end of the post to Submit your responses.
• After the time gets finished, automatically JUnit MCQ Online Test gets submitted.
• Also, the aspirants should remember that until the process gets complete, candidates should not refresh the page.

JUnit Online Test Questions with Answers

Which annotation is used to denote a JUnit test method?
a) @Test
b) @TestMethod
c) @JTest
d) @JUnit
Answer: a) @Test

Explanation: The correct annotation to denote a JUnit test method is @Test. This annotation is used to mark a method as a test method that should be executed by the JUnit framework during testing.

Which JUnit assertion method is used to check if two objects are equal?
a) assertSame()
b) assertEquals()
c) assertNotEquals()
d) assertEqualObjects()
Answer: b) assertEquals()

Explanation: The assertEquals() method is used to check if two objects are equal. It compares the expected value with the actual value and fails the test if they are not equal.

What is the purpose of the @Before annotation in JUnit?
a) It specifies that a method should be executed before each test method
b) It specifies that a method should be executed after each test method
c) It specifies that a method should be executed before the entire test class
d) It specifies that a method should be executed after the entire test class
Answer: a) It specifies that a method should be executed before each test method

Explanation: The @Before annotation is used to mark a method that should be executed before each test method in a JUnit test class. It is typically used to set up preconditions for the tests, such as initializing objects or setting up test data.

Which JUnit annotation is used to ignore a test method?
a) @Ignore
b) @Skip
c) @Disable
d) @Exclude
Answer: a) @Ignore

Explanation: The @Ignore annotation is used to mark a test method that should be ignored by the JUnit framework during testing. This can be useful when a test method is not ready or when it is not relevant to the current testing cycle.

What is the purpose of the @After annotation in JUnit?
a) It specifies that a method should be executed before each test method
b) It specifies that a method should be executed after each test method
c) It specifies that a method should be executed before the entire test class
d) It specifies that a method should be executed after the entire test class
Answer: b) It specifies that a method should be executed after each test method

Explanation: The @After annotation is used to mark a method that should be executed after each test method in a JUnit test class. It is typically used to clean up resources or perform post-test actions.

Which JUnit assertion method is used to check if a condition is true?
a) assertTrue()
b) assertFalse()
c) assertCondition()
d) assertTrueCondition()
Answer: a) assertTrue()

Explanation: The assertTrue() method is used to check if a given condition is true. It fails the test if the condition is false.

What is the purpose of the @BeforeClass annotation in JUnit?
a) It specifies that a method should be executed before each test method
b) It specifies that a method should be executed after each test method
c) It specifies that a method should be executed before the entire test class
d) It specifies that a method should be executed after the entire test class
Answer: c) It specifies that a method should be executed before the entire test class

Explanation: The @BeforeClass annotation is used to mark a method that should be executed once before all the test methods in a JUnit test class. It is typically used for setting up global test fixtures or performing expensive setup operations.

Which JUnit annotation is used to specify the expected exception in a test method?
a) @Exception
b) @Expect
c) @ExpectedException
d) @ExceptionTest

Answer: c) @ExpectedException

Explanation: The @ExpectedException annotation is used to specify the expected exception that should be thrown by a test method. This annotation allows you to define the expected type of exception, message, and even the exact content of the exception for a particular test case.

What is the purpose of the @AfterClass annotation in JUnit?
a) It specifies that a method should be executed before each test method
b) It specifies that a method should be executed after each test method
c) It specifies that a method should be executed before the entire test class
d) It specifies that a method should be executed after the entire test class
Answer: d) It specifies that a method should be executed after the entire test class

Explanation: The @AfterClass annotation is used to mark a method that should be executed once after all the test methods in a JUnit test class have been executed. It is typically used for cleaning up global test fixtures or performing teardown operations.

Which JUnit annotation is used to group multiple test cases together?
a) @Group
b) @Suite
c) @TestGroup
d) @TestSuite
Answer: b) @Suite

Explanation: The @Suite annotation is used to group multiple test cases together into a test suite in JUnit. A test suite is a collection of test cases that can be executed together, allowing you to organize and run tests in a more organized manner.

What is the purpose of the @RunWith annotation in JUnit?
a) It specifies the test runner to be used for executing tests
b) It specifies the test class to be executed
c) It specifies the order in which tests should be executed
d) It specifies the expected result for a test case
Answer: a) It specifies the test runner to be used for executing tests

Explanation: The @RunWith annotation is used to specify the test runner to be used for executing tests in JUnit. JUnit supports different test runners, such as the default JUnit runner, Spring runner, and Mockito runner, among others. This annotation allows you to customize the behavior of test execution.

Which JUnit assertion method is used to check if an array contains a specific value?
a) assertArrayEquals()
b) assertArrayContains()
c) assertContains()
d) assertArrayHasValue()
Answer: a) assertArrayEquals()

Explanation: The assertArrayEquals() method is used to check if two arrays are equal. It also includes a variation that allows you to check if an array contains a specific value. This assertion is useful when you need to verify the contents of an array in a test case.

What is the purpose of the @Rule annotation in JUnit?
a) It specifies the expected result for a test case
b) It specifies the order in which tests should be executed
c) It specifies a custom test rule to be applied during test execution
d) It specifies the timeout duration for a test case
Answer: c) It specifies a custom test rule to be applied during test execution

Explanation: The @Rule annotation is used to specify a custom test rule to be applied during test execution in JUnit. Test rules are used to add additional behavior or functionality to test cases, such as applying timeouts, changing system properties, or mocking objects.

Which JUnit annotation is used to mark a test method as a parameterized test?
a) @Parameterized
b) @ParamTest
c) @ParametrizedTest
d) @ParameterizedTest
Answer: d) @ParameterizedTest

Explanation: The @ParameterizedTest annotation is used to mark a test method as a parameterized test in JUnit. Parameterized tests allow you to run the same test logic with different input values, making it easy to test multiple scenarios with a single test method. You can provide input data using various sources, such as arrays, CSV files, or custom providers, and JUnit will automatically execute the test method with different input values.

Which JUnit annotation is used to disable a test method?
a) @Ignore
b) @DisableTest
c) @Disabled
d) @NoTest
Answer: c) @Disabled

Explanation: The @Disabled annotation is used to disable a test method in JUnit. When a test method is marked with this annotation, it will not be executed during test runs. This can be useful when you want to temporarily exclude a test method from the test suite without deleting the test method itself.

What is the purpose of the @BeforeEach annotation in JUnit?
a) It specifies that a method should be executed before each test method
b) It specifies that a method should be executed after each test method
c) It specifies that a method should be executed before the entire test class
d) It specifies that a method should be executed after the entire test class
Answer: a) It specifies that a method should be executed before each test method

Explanation: The @BeforeEach annotation is used to mark a method that should be executed before each test method in a JUnit test class. This can be used for setting up common test fixtures or performing setup operations that need to be done before every test method execution.

Which JUnit assertion method is used to check if an object is null?
a) assertNotNull()
b) assertNull()
c) assertNotEquals()
d) assertEquals()
Answer: b) assertNull()

Explanation: The assertNull() method is used to check if an object is null in JUnit. This assertion is useful when you want to verify that a certain object should be null in a test case.

What is the purpose of the @Timeout annotation in JUnit?
a) It specifies the expected result for a test case
b) It specifies the order in which tests should be executed
c) It specifies a timeout duration for a test case
d) It specifies a timeout duration for the entire test class
Answer: c) It specifies a timeout duration for a test case

Explanation: The @Timeout annotation is used to specify a timeout duration for a test case in JUnit. If a test case takes longer to execute than the specified timeout duration, the test case will fail. This is useful for preventing tests from running indefinitely and ensuring that tests complete within a certain time limit.

Which JUnit assertion method is used to check if two objects are not equal?
a) assertNotNull()
b) assertNull()
c) assertNotEquals()
d) assertEquals()
Answer: c) assertNotEquals()

Explanation: The assertNotEquals() method is used to check if two objects are not equal in JUnit. This assertion is useful when you want to verify that two objects should not be equal in a test case.

What is the purpose of the @DisplayName annotation in JUnit?
a) It specifies the name of a test case
b) It specifies the name of a test class
c) It specifies the display name for a test case or test class
d) It specifies the description for a test case or test class
Answer: c) It specifies the display name for a test case or test class

Explanation: The @DisplayName annotation is used to specify the display name for a test case or test class in JUnit. The display name is used in test reports and test results to provide a human-readable name for the test, which can help in understanding the purpose of the test without looking into the test code.

About JUnit Tool

Benefits Of Practicing JUnit Quiz

• Practicing JUnit quiz helps the candidates to speed up themselves at the time of actual examination.
• Moreover, the aspects of Time Management and Accuracy improved.
• Also, the candidates can have knowledge on the perfect topics.
• And by facing this JUnit MCQ Online Test candidates can rate among themselves.
• Moreover, as the questions get one by one for the user, then they can have a comfortable view.

How To Check JUnit Programming Online Test Results

Candidates will be displayed with the results at the end of the exam. Moreover, after the exam submission, results shown on the screen. So check the correct answers and solve the mistakes. We hope the given information on JUnit Quiz is informative and precise. So, we request the aspirants to keep visiting our web portal Freshers Now regularly. Accordingly, we will be updating our page with latest information.