Mockito dependency setup in JUnit - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to add the Mockito dependency in Maven's <dependencies> section.

JUnit

<dependency>
    <groupId>org.mockito</groupId>
    <artifactId>mockito-core</artifactId>
    <version>[1]</version>
    <scope>test</scope>
</dependency>

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A3.12.4

B4.11.0

C2.23.4

D5.0.0

Attempts:

3 left

💡 Hint

Common Mistakes

Using an outdated or too new version that might not be compatible with your JUnit version.

A stable Mockito version for JUnit testing is 3.12.4. Using this version ensures compatibility and stability.

2fill in blank

medium

Complete the Gradle dependency line to include Mockito for testing.

JUnit

testImplementation '[1]:mockito-core:3.12.4'

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Amockito

Borg.junit.jupiter

Cjunit

Dorg.mockito

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'junit' or 'mockito' alone as group ID, which is incorrect.

The group ID for Mockito in Gradle is 'org.mockito'. This is required to fetch the correct library.

3fill in blank

hard

Fix the error in the Mockito annotation import statement.

JUnit

import org.mockito.[1];

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AMock

Bmock

CMocks

Dmockito

Attempts:

3 left

💡 Hint

Common Mistakes

Using lowercase 'mock' which does not exist as an annotation.

The correct annotation to create mock objects is '@Mock' with capital 'M'. The import must be 'org.mockito.Mock'.

4fill in blank

hard

Fill both blanks to initialize Mockito annotations in a JUnit 4 test class.

JUnit

@Before
public void setup() {
    Mockito.[1](this);
    // other setup code
}

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AAnnotations

BinitMocks

Cinitialize

DsetupMocks

Attempts:

3 left

💡 Hint

Common Mistakes

Using non-existent methods like 'Annotations' or 'initialize'.

In JUnit 4, Mockito annotations are initialized by calling Mockito.initMocks(this) inside a method annotated with @Before.

5fill in blank

hard

Fill all three blanks to use MockitoExtension with JUnit 5.

JUnit

@ExtendWith([1].class)
public class MyTest {

    @Mock
    private Service service;

    @BeforeEach
    void init() {
        MockitoAnnotations.[2](this);
    }

    @Test
    void testService() {
        when(service.call()).thenReturn([3]);
        // test code
    }
}

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AMockitoExtension

BopenMocks

C"mocked response"

DinitMocks

Attempts:

3 left

💡 Hint

Common Mistakes

Using initMocks instead of openMocks in JUnit 5.

Not providing a valid return value in when().

JUnit 5 uses @ExtendWith(MockitoExtension.class) to enable Mockito. The method openMocks(this) initializes mocks. The when() method needs a return value, here a string "mocked response".