26.Setup Mocks

How to create a mock in Java?

• Create fake objects from real classes/interfaces and instrument them to respond with specific data for each method.
• Download a Mockito-All archive and set up the Mockito environment.
• Call MockitoAnnotations.initMocks(this) in a setup method or use annotations like @RunWith(MockitoJUnitRunner.class) or @ExtendWith(MockitoExtension.class).
• A mock is a fake class that can be examined after the test is finished for its interactions with the class under test.

How do I set up Mockito?

• Create fake objects from real classes/interfaces and instrument them to respond with specific data for each method.
• Download a Mockito-All archive and set up the Mockito environment.
• Call MockitoAnnotations.initMocks(this) in a setup method or use annotations like @RunWith(MockitoJUnitRunner.class) or @ExtendWith(MockitoExtension.class).
• A mock is a fake class that can be examined after the test is finished for its interactions with the class under test.

How to initialize mock object in Java?

• Create fake objects from real classes/interfaces and instrument them to respond with specific data for each method.
• Download a Mockito-All archive and set up the Mockito environment.
• Call MockitoAnnotations.initMocks(this) in a setup method or use annotations like @RunWith(MockitoJUnitRunner.class) or @ExtendWith(MockitoExtension.class).
• A mock is a fake class that can be examined after the test is finished for its interactions with the class under test.

What is @mock in Java?

• Create fake objects from real classes/interfaces and instrument them to respond with specific data for each method.
• Download a Mockito-All archive and set up the Mockito environment.
• Call MockitoAnnotations.initMocks(this) in a setup method or use annotations like @RunWith(MockitoJUnitRunner.class) or @ExtendWith(MockitoExtension.class).
• A mock is a fake class that can be examined after the test is finished for its interactions with the class under test.

What is the difference between @InjectMocks and Autowired?

• @InjectMocks is a Mockito mechanism for injecting declared fields in the test class into matching fields in the class under test, while @Autowired is Spring's annotation for autowiring a bean into a production, non-test class.
• @InjectMocks is a Mockito mechanism for injecting declared fields in the test class into matching fields in the class under test, and it requires the class under test to be a Spring component, while @Autowired is Spring's annotation for autowiring a bean into a production, non-test class.
• @InjectMocks is a Mockito mechanism for injecting declared fields in the test class into matching fields in the class under test, and it doesn't require the class under test to be a Spring component, while @Autowired is Spring's annotation for autowiring a bean into a production, non-test class.
• @InjectMocks is a Mockito mechanism for injecting declared fields in the test class into matching fields in the class under test, while @Autowired is Spring's annotation for autowiring a bean into a production, non-test class.

How to create mock for API?

• Create fake objects from real classes/interfaces and instrument them to respond with specific data for each method.
• Set up a collection for mocking, retrieve the collection ID, create a mock server with the Postman API, and send a request to the mock server.
• Call MockitoAnnotations.initMocks(this) in a setup method or use annotations like @RunWith(MockitoJUnitRunner.class) or @ExtendWith(MockitoExtension.class).
• A mock is a fake class that can be examined after the test is finished for its interactions with the class under test.

How can a mock be created?

• Create fake objects from real classes/interfaces and instrument them to respond with specific data for each method.
• Download a Mockito-All archive and set up the Mockito environment.
• Create an interface and a Java class to represent the application, test the class, and verify the result.
• Call MockitoAnnotations.initMocks(this) in a setup method or use annotations like @RunWith(MockitoJUnitRunner.class) or @ExtendWith(MockitoExtension.class).

How to add Mockito in Java?

• Create an interface named ToDoService and an implementation class named ToDoBusiness, then create a JUnit test case for unit testing.
• Create fake objects from real classes/interfaces and instrument them to respond with specific data for each method.
• Download a Mockito-All archive and set up the Mockito environment.
• Call MockitoAnnotations.initMocks(this) in a setup method or use annotations like @RunWith(MockitoJUnitRunner.class) or @ExtendWith(MockitoExtension.class).

How to initialize a mock Mockito?

• Create fake objects from real classes/interfaces and instrument them to respond with specific data for each method.
• Download a Mockito-All archive and set up the Mockito environment.
• Call MockitoAnnotations.initMocks(this) in a setup method or use annotations like @RunWith(MockitoJUnitRunner.class) or @ExtendWith(MockitoExtension.class).
• A mock is a fake class that can be examined after the test is finished for its interactions with the class under test.

Can I mock a class in Java?

• Yes, we can use the Mockito class mock() method to create a mock object of a given class or interface.
• No, mocking is not supported in Java.
• Yes, but it requires additional libraries and configuration.
• Yes, but it can only be done with Spring Framework.