JUnit quiz

Test your JUnit knowledge with a free interactive quiz — 40 questions with answers and explanations. No signup needed to play.

What is the purpose of the @Before annotation?

1. What is the purpose of the @Before annotation?
2. Which static class provides JUnit 4's core assertion methods like assertEquals and assertTrue?
3. What happens if an @Test method throws an unexpected (unhandled) exception during execution?
4. What is a JUnit 4 test suite (@RunWith(Suite.class) with @Suite.SuiteClasses)?
5. Which annotation marks a method as a test case in classic JUnit?
6. How many instances of a test class does JUnit typically create when running a class with 3 @Test methods?
7. What does @Test(expected = IllegalArgumentException.class) do?
8. In Mockito, what does @Mock do when applied to a field in a test class run with MockitoJUnitRunner?
9. What does when(paymentGateway.charge(anyString(), any(BigDecimal.class))).thenReturn(true) do?
10. What does assertEquals(expected, actual) check?
11. What is JUnit?
12. What is the purpose of the @After annotation?

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