"Groups assertions so all are evaluated and failures reported together" — in JUnit, this describes which of the following?

assertAll: Groups assertions so all are evaluated and failures reported together.

Which JUnit 5 annotation runs the same test repeatedly with different argument sets?

@ParameterizedTest combined with a source (@ValueSource, @CsvSource, @MethodSource, …) runs the test once per provided argument set.

Which of the following statements about JUnit is TRUE?

Jupiter is the new API; Vintage runs JUnit 4 tests on the platform.

"Marks a Jupiter test method" — in JUnit, this describes which of the following?

@Test: Marks a Jupiter test method.

Which statement correctly describes JUnit?

Jupiter is the new API; Vintage runs JUnit 4 tests on the platform.

"Skips a test or class with an optional reason" — in JUnit, this describes which of the following?

@Disabled: Skips a test or class with an optional reason.

In a CI/CD pipeline review, consider this: Which JUnit 5 annotation runs a test with multiple argument sets?

@ParameterizedTest + a source runs once per argument set.

"Registers extensions such as MockitoExtension" — in JUnit, this describes which of the following?

@ExtendWith: Registers extensions such as MockitoExtension.

"Runs a test a fixed number of times" — in JUnit, this describes which of the following?

@RepeatedTest: Runs a test a fixed number of times.

Identify the accurate statement about JUnit:

Lifecycle annotations were renamed from JUnit 4's @Before/@BeforeClass.

JUnit 5 interview questions — Medium

201 medium-level JUnit 5 questions from our Automation Testing bank, each with the correct answer and an explanation of why it is correct.

What this covers

JUnit 5 appears throughout Automation Testing interviews. At medium level, interviewers are typically checking that you have used it in practice: what you configured, what broke, and how you knew it worked. Work through these, then explain your answer out loud; the second part is what interviews actually test.

Other levels:Hard (101)Easy (98)

20 example questions

1. "Groups assertions so all are evaluated and failures reported together" — in JUnit, this describes which of the following?
- A. AssertAll.correct
- B. @Timeout.
- C. @Disabled.
- D. @Test.
Why: assertAll: Groups assertions so all are evaluated and failures reported together.
2. Which JUnit 5 annotation runs the same test repeatedly with different argument sets?
- A. @RepeatedTest.
- B. @ParameterizedTest with a source (e.g., @ValueSource).correct
- C. @BeforeEach.
- D. @Disabled.
Why: @ParameterizedTest combined with a source (@ValueSource, @CsvSource, @MethodSource, …) runs the test once per provided argument set.
3. Which of the following statements about JUnit is TRUE?
- A. Assumptions that fail mark the test as failed in the report.
- B. Parameterized tests require the JUnit 4 @RunWith(Parameterized.class) runner in JUnit 5.
- C. JUnit 5 consists of the Platform, Jupiter, and Vintage modules.correct
- D. JUnit 5 tests must extend a base TestCase class.
Why: Jupiter is the new API; Vintage runs JUnit 4 tests on the platform.
4. "Marks a Jupiter test method" — in JUnit, this describes which of the following?
- A. @CsvSource.
- B. @Test.correct
- C. @RepeatedTest.
- D. TestInfo.
Why: @Test: Marks a Jupiter test method.
5. Which statement correctly describes JUnit?
- A. AssertThrows passes only if no exception is thrown.
- B. @BeforeAll runs before every single test method.
- C. JUnit 5 has no mechanism for tagging or filtering tests.
- D. JUnit 5 consists of the Platform, Jupiter, and Vintage modules.correct
Why: Jupiter is the new API; Vintage runs JUnit 4 tests on the platform.
6. "Skips a test or class with an optional reason" — in JUnit, this describes which of the following?
- A. @Disabled.correct
- B. @ExtendWith.
- C. @RepeatedTest.
- D. @Test.
Why: @Disabled: Skips a test or class with an optional reason.
7. In a CI/CD pipeline review, consider this: Which JUnit 5 annotation runs a test with multiple argument sets?
- A. @RepeatedTest.
- B. @ParameterizedTest with a source.correct
- C. @BeforeEach.
- D. @Disabled.
Why: @ParameterizedTest + a source runs once per argument set.
8. "Registers extensions such as MockitoExtension" — in JUnit, this describes which of the following?
- A. TestInfo.
- B. @Disabled.
- C. @ExtendWith.correct
- D. @RepeatedTest.
Why: @ExtendWith: Registers extensions such as MockitoExtension.
9. "Runs a test a fixed number of times" — in JUnit, this describes which of the following?
- A. @RepeatedTest.correct
- B. @ExtendWith.
- C. @Disabled.
- D. TestInfo.
Why: @RepeatedTest: Runs a test a fixed number of times.
10. Identify the accurate statement about JUnit:
- A. AssertThrows passes only if no exception is thrown.
- B. @BeforeEach runs before every test, and @BeforeAll runs once per class (static by default).correct
- C. Assumptions that fail mark the test as failed in the report.
- D. JUnit 5 has no mechanism for tagging or filtering tests.
Why: Lifecycle annotations were renamed from JUnit 4's @Before/@BeforeClass.
11. Which JUnit concept matches this description: "Supplies inline CSV rows to a parameterized test"?
- A. @ExtendWith.
- B. AssertAll.
- C. @CsvSource.correct
- D. TestInfo.
Why: @CsvSource: Supplies inline CSV rows to a parameterized test.
12. In the context of JUnit, which of the following is a correct statement?
- A. @BeforeAll runs before every single test method.
- B. @ParameterizedTest with sources like @ValueSource or @CsvSource runs a test with multiple inputs.correct
- C. Parameterized tests require the JUnit 4 @RunWith(Parameterized.class) runner in JUnit 5.
- D. JUnit 5 tests must extend a base TestCase class.
Why: Parameterized tests replace repetitive copies of the same test.
13. In JUnit, which of the following is described as: "Groups assertions so all are evaluated and failures reported together"?
- A. TestInfo.
- B. AssertAll.correct
- C. @Disabled.
- D. @Timeout.
Why: assertAll: Groups assertions so all are evaluated and failures reported together.
14. In JUnit, which of the following is described as: "Supplies inline CSV rows to a parameterized test"?
- A. @RepeatedTest.
- B. TestInfo.
- C. @ExtendWith.
- D. @CsvSource.correct
Why: @CsvSource: Supplies inline CSV rows to a parameterized test.
15. Which JUnit concept matches this description: "Injected object describing the current test"?
- A. @Timeout.
- B. TestInfo.correct
- C. @Test.
- D. @ExtendWith.
Why: TestInfo: Injected object describing the current test.
16. Which JUnit concept matches this description: "Fails a test exceeding a time limit"?
- A. AssertAll.
- B. @Timeout.correct
- C. @Disabled.
- D. @RepeatedTest.
Why: @Timeout: Fails a test exceeding a time limit.
17. In JUnit, which of the following is described as: "Registers extensions such as MockitoExtension"?
- A. @ExtendWith.correct
- B. TestInfo.
- C. @CsvSource.
- D. @Timeout.
Why: @ExtendWith: Registers extensions such as MockitoExtension.
18. Regarding JUnit, which statement is correct?
- A. @ParameterizedTest with sources like @ValueSource or @CsvSource runs a test with multiple inputs.correct
- B. JUnit 5 has no mechanism for tagging or filtering tests.
- C. AssertThrows passes only if no exception is thrown.
- D. @BeforeAll runs before every single test method.
Why: Parameterized tests replace repetitive copies of the same test.
19. Which JUnit concept matches this description: "Runs a test a fixed number of times"?
- A. AssertAll.
- B. @RepeatedTest.correct
- C. @Disabled.
- D. @Timeout.
Why: @RepeatedTest: Runs a test a fixed number of times.
20. Which JUnit concept matches this description: "Registers extensions such as MockitoExtension"?
- A. AssertAll.
- B. @ExtendWith.correct
- C. @CsvSource.
- D. TestInfo.
Why: @ExtendWith: Registers extensions such as MockitoExtension.

JUnit 5 interview questions — Medium

What this covers

20 example questions

1. "Groups assertions so all are evaluated and failures reported together" — in JUnit, this describes which of the following?

2. Which JUnit 5 annotation runs the same test repeatedly with different argument sets?

3. Which of the following statements about JUnit is TRUE?

4. "Marks a Jupiter test method" — in JUnit, this describes which of the following?

5. Which statement correctly describes JUnit?

6. "Skips a test or class with an optional reason" — in JUnit, this describes which of the following?

7. In a CI/CD pipeline review, consider this: Which JUnit 5 annotation runs a test with multiple argument sets?

8. "Registers extensions such as MockitoExtension" — in JUnit, this describes which of the following?

9. "Runs a test a fixed number of times" — in JUnit, this describes which of the following?

10. Identify the accurate statement about JUnit:

11. Which JUnit concept matches this description: "Supplies inline CSV rows to a parameterized test"?

12. In the context of JUnit, which of the following is a correct statement?

13. In JUnit, which of the following is described as: "Groups assertions so all are evaluated and failures reported together"?

14. In JUnit, which of the following is described as: "Supplies inline CSV rows to a parameterized test"?

15. Which JUnit concept matches this description: "Injected object describing the current test"?

16. Which JUnit concept matches this description: "Fails a test exceeding a time limit"?

17. In JUnit, which of the following is described as: "Registers extensions such as MockitoExtension"?

18. Regarding JUnit, which statement is correct?

19. Which JUnit concept matches this description: "Runs a test a fixed number of times"?

20. Which JUnit concept matches this description: "Registers extensions such as MockitoExtension"?

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