Mocking Frameworks MCQs

Which of the following is a popular Java mocking framework?

a) Mockito

b) JUnit

c) PyTest

d) NUnit

View Answer

Correct answer: A — Mockito
In Python, the standard library for mocking is:

a) unittest.mock

b) pytest.mock

c) mockito.py

d) pyfake

View Answer

Correct answer: A — unittest.mock
JMockit is primarily used for:

a) Mocking and stubbing in Java

b) Logging in Java

c) Deployment in Java

d) Monitoring in Java

View Answer

Correct answer: A — Mocking and stubbing in Java
Which Mockito method verifies method calls?

a) verify()

b) check()

c) assertCall()

d) confirm()

View Answer

Correct answer: A — verify()
In unittest.mock, which function creates a mock object?

a) Mock()

b) Fake()

c) Stub()

d) Spy()

View Answer

Correct answer: A — Mock()
Which of the following is NOT a mocking concept?

a) Stubbing

b) Spying

c) Verifying

d) Compiling

View Answer

Correct answer: D — Compiling
Mockito's when(...).thenReturn(...) is used for:

a) Stubbing behavior

b) Logging output

c) Monitoring calls

d) Deploying code

View Answer

Correct answer: A — Stubbing behavior
In unittest.mock, patch() is used to:

a) Replace objects during tests

b) Deploy applications

c) Monitor logs

d) Run CI/CD pipelines

View Answer

Correct answer: A — Replace objects during tests
JMockit supports mocking of:

a) Static methods

b) Only instance methods

c) Only constructors

d) Only private methods

View Answer

Correct answer: A — Static methods
Which of the following best describes a stub?

a) Provides predefined responses

b) Records method calls

c) Deploys applications

d) Monitors logs

View Answer

Correct answer: A — Provides predefined responses

What will be printed?

1	import static org.mockito.Mockito.*;
2	public class EduinqMockTest {
3	public static void main(String[] args) {
4	List<String> mockList = mock(List.class);
5	when(mockList.size()).thenReturn(5);
6	System.out.println("Eduinq size: " + mockList.size());
7	}
8	}

a) Eduinq size: 5

b) Eduinq size: 0

c) Eduinq size: null

d) Compilation error

View Answer

Correct answer: A — Eduinq size: 5

In unittest.mock, MagicMock differs from Mock by:

a) Supporting magic methods

b) Supporting only static methods

c) Supporting only private methods

d) Supporting only constructors

View Answer

Correct answer: A — Supporting magic methods
Mockito's spy() is used to:

a) Wrap real objects and monitor calls

b) Create fake objects only

c) Deploy applications

d) Monitor logs

View Answer

Correct answer: A — Wrap real objects and monitor calls
Which of the following is true about mocks?

a) They simulate dependencies

b) They replace CI/CD pipelines

c) They monitor production logs

d) They deploy containers

View Answer

Correct answer: A — They simulate dependencies
JMockit supports verification using:

a) Verifications block

b) assertVerify

c) checkCalls

d) confirmCalls

View Answer

Correct answer: A — Verifications block
In unittest.mock, side_effect is used to:

a) Define custom behavior or exceptions

b) Deploy applications

c) Monitor logs

d) Run CI/CD pipelines

View Answer

Correct answer: A — Define custom behavior or exceptions
Mockito supports argument capturing using:

a) ArgumentCaptor

b) ArgCapture

c) CaptureArgs

d) ParamCaptor

View Answer

Correct answer: A — ArgumentCaptor
Which of the following is NOT a Python mocking tool?

a) unittest.mock

b) pytest-mock

c) JMockit

d) MagicMock

View Answer

Correct answer: C — JMockit
JMockit supports mocking constructors using:

a) Expectations block

b) ConstructorMock

c) InitMock

d) BuildMock

View Answer

Correct answer: A — Expectations block
Which of the following best describes a spy?

a) Wraps real objects and records calls

b) Provides predefined responses only

c) Deploys applications

d) Monitors logs

View Answer

Correct answer: A — Wraps real objects and records calls

What will be printed?

1	from unittest.mock import Mock
2	eduinq_mock = Mock()
3	eduinq_mock.get_name.return_value = "Eduinq"
4	print(eduinq_mock.get_name())

a) Eduinq

b) None

c) get_name

d) Error

View Answer

Correct answer: A — Eduinq

Mockito's any() matcher is used for:

a) Matching any argument

b) Matching only integers

c) Matching only strings

d) Matching only objects

View Answer

Correct answer: A — Matching any argument
In unittest.mock, assert_called_once() verifies:

a) Method was called exactly once

b) Method was never called

c) Method was called multiple times

d) Method was called with arguments

View Answer

Correct answer: A — Method was called exactly once
JMockit supports mocking private methods using:

a) Expectations block

b) PrivateMock

c) HiddenMock

d) SecretMock

View Answer

Correct answer: A — Expectations block
Which of the following is true about stubs?

a) They provide fixed responses

b) They monitor logs

c) They deploy applications

d) They replace CI/CD pipelines

View Answer

Correct answer: A — They provide fixed responses
Mockito's doReturn(...).when(...) is used for:

a) Stubbing void methods

b) Logging output

c) Monitoring calls

d) Deploying code

View Answer

Correct answer: A — Stubbing void methods
In unittest.mock, assert_not_called() verifies:

a) Method was never called

b) Method was called once

c) Method was called multiple times

d) Method was called with arguments

View Answer

Correct answer: A — Method was never called
JMockit supports mocking static methods using:

a) Expectations block

b) StaticMock

c) MethodMock

d) ClassMock

View Answer

Correct answer: A — Expectations block
Which of the following best describes verification in mocking?

a) Ensures expected calls were made

b) Deploys applications

c) Monitors logs

d) Runs CI/CD pipelines

View Answer

Correct answer: A — Ensures expected calls were made
PyTest integrates mocking using:

a) pytest-mock plugin

b) pytest-fake plugin

c) pytest-stub plugin

d) pytest-spy plugin

View Answer

Correct answer: A — pytest-mock plugin

What will be printed?

1	import static org.mockito.Mockito.*;
2	public class EduinqSpyTest {
3	public static void main(String[] args) {
4	List<String> list = new ArrayList<>();
5	List<String> spyList = spy(list);
6	spyList.add("Eduinq");
7	System.out.println(spyList.get(0));
8	}
9	}

a) Eduinq

b) null

c) 0

d) Compilation error

View Answer

Correct answer: A — Eduinq

In unittest.mock, call_args stores:

a) Arguments of the last call

b) All return values

c) All exceptions

d) All mocks

View Answer

Correct answer: A — Arguments of the last call
Mockito supports throwing exceptions using:

a) thenThrow()

b) throwException()

c) raiseError()

d) failWith()

View Answer

Correct answer: A — thenThrow()
JMockit supports recording expectations using:

a) Expectations block

b) Record block

c) Mock block

d) Stub block

View Answer

Correct answer: A — Expectations block
Which of the following is true about spies?

a) They wrap real objects

b) They only provide fixed responses

c) They deploy applications

d) They monitor logs

View Answer

Correct answer: A — They wrap real objects
In unittest.mock, assert_called_with() verifies:

a) Method was called with specific arguments

b) Method was never called

c) Method was called multiple times

d) Method was called without arguments

View Answer

Correct answer: A — Method was called with specific arguments
Mockito supports deep stubs using:

a) mock(Class, RETURNS_DEEP_STUBS)

b) mock(Class, RETURNS_STUBS)

c) mock(Class, DEEP)

d) mock(Class, STUBS)

View Answer

Correct answer: A — mock(Class, RETURNS_DEEP_STUBS)
JMockit supports mocking final classes using:

a) Expectations block

b) FinalMock

c) ClassMock

d) EndMock

View Answer

Correct answer: A — Expectations block
Which of the following is true about mocks vs stubs?

a) Mocks verify interactions, stubs provide responses

b) Mocks provide responses, stubs verify interactions

c) Both provide responses only

d) Both verify interactions only

View Answer

Correct answer: A — Mocks verify interactions, stubs provide responses
PyTest's monkeypatch fixture is mainly used for:

a) Modifying or replacing functions during tests

b) Deploying applications

c) Monitoring logs

d) Running CI/CD pipelines

View Answer

Correct answer: A — Modifying or replacing functions during tests
Mockito's reset() method is used to:

a) Clear interactions and stubs on a mock

b) Deploy applications

c) Monitor logs

d) Run pipelines

View Answer

Correct answer: A — Clear interactions and stubs on a mock
In unittest.mock, patch.object() is used to:

a) Replace attributes of an object

b) Replace entire modules

c) Replace CI/CD pipelines

d) Replace databases

View Answer

Correct answer: A — Replace attributes of an object
JMockit supports mocking final methods using:

a) Expectations block

b) FinalMock

c) MethodMock

d) EndMock

View Answer

Correct answer: A — Expectations block
Which of the following is true about spies in Mockito?

a) They allow partial mocking of real objects

b) They only provide fixed responses

c) They deploy applications

d) They monitor logs

View Answer

Correct answer: A — They allow partial mocking of real objects
In unittest.mock, patch.dict() is used to:

a) Temporarily modify dictionaries

b) Replace modules

c) Replace classes

d) Replace functions

View Answer

Correct answer: A — Temporarily modify dictionaries
Mockito's verifyNoMoreInteractions() is used to:

a) Ensure no unexpected calls were made

b) Ensure all calls are logged

c) Ensure deployment is complete

d) Ensure monitoring is active

View Answer

Correct answer: A — Ensure no unexpected calls were made
JMockit supports mocking static initializers using:

a) Expectations block

b) InitMock

c) StaticInitMock

d) ClassInitMock

View Answer

Correct answer: A — Expectations block
Which of the following best describes a fake object?

a) Provides a working implementation with simplified logic

b) Provides predefined responses only

c) Deploys applications

d) Monitors logs

View Answer

Correct answer: A — Provides a working implementation with simplified logic
In unittest.mock, patch.multiple() is used to:

a) Patch multiple attributes at once

b) Patch only one attribute

c) Patch CI/CD pipelines

d) Patch databases

View Answer

Correct answer: A — Patch multiple attributes at once
Which of the following best describes mocking frameworks?

a) They simulate dependencies for isolated testing

b) They replace CI/CD pipelines

c) They monitor production logs

d) They deploy containers

View Answer

Correct answer: A — They simulate dependencies for isolated testing

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