KaneAI - World’s First E2E Software Testing Agent.Book a Demo Join TestMu Conference

How to use Answers class of org.mockito package

Best Mockito code snippet using org.mockito.Answers

Source:InvocationContainerImpl.java

...4 */5package org.mockito.internal.stubbing;6import org.mockito.internal.invocation.InvocationMatcher;7import org.mockito.internal.invocation.StubInfoImpl;8import org.mockito.internal.stubbing.answers.AnswersValidator;9import org.mockito.internal.verification.DefaultRegisteredInvocations;10import org.mockito.internal.verification.RegisteredInvocations;11import org.mockito.internal.verification.SingleRegisteredInvocation;12import org.mockito.invocation.Invocation;13import org.mockito.mock.MockCreationSettings;14import org.mockito.stubbing.Answer;15import static org.mockito.internal.progress.ThreadSafeMockingProgress.mockingProgress;16import java.io.Serializable;17import java.util.ArrayList;18import java.util.LinkedList;19import java.util.List;20@SuppressWarnings("unchecked")21public class InvocationContainerImpl implements InvocationContainer, Serializable {22    private static final long serialVersionUID = -5334301962749537177L;23    private final LinkedList<StubbedInvocationMatcher> stubbed = new LinkedList<StubbedInvocationMatcher>();24    private final List<Answer<?>> answersForStubbing = new ArrayList<Answer<?>>();25    private final RegisteredInvocations registeredInvocations;26    private InvocationMatcher invocationForStubbing;27    public InvocationContainerImpl(MockCreationSettings mockSettings) {28        this.registeredInvocations = createRegisteredInvocations(mockSettings);29    }30    public void setInvocationForPotentialStubbing(InvocationMatcher invocation) {31        registeredInvocations.add(invocation.getInvocation());32        this.invocationForStubbing = invocation;33    }34    public void resetInvocationForPotentialStubbing(InvocationMatcher invocationMatcher) {35        this.invocationForStubbing = invocationMatcher;36    }37    public void addAnswer(Answer answer) {38        registeredInvocations.removeLast();39        addAnswer(answer, false);40    }41    public void addConsecutiveAnswer(Answer answer) {42        addAnswer(answer, true);43    }44    public void addAnswer(Answer answer, boolean isConsecutive) {45        Invocation invocation = invocationForStubbing.getInvocation();46        mockingProgress().stubbingCompleted(invocation);47        AnswersValidator answersValidator = new AnswersValidator();48        answersValidator.validate(answer, invocation);49        synchronized (stubbed) {50            if (isConsecutive) {51                stubbed.getFirst().addAnswer(answer);52            } else {53                stubbed.addFirst(new StubbedInvocationMatcher(invocationForStubbing, answer));54            }55        }56    }57    Object answerTo(Invocation invocation) throws Throwable {58        return findAnswerFor(invocation).answer(invocation);59    }60    public StubbedInvocationMatcher findAnswerFor(Invocation invocation) {61        synchronized (stubbed) {62            for (StubbedInvocationMatcher s : stubbed) {63                if (s.matches(invocation)) {64                    mockingProgress().getStubbingListener().usedStubbing(s.getInvocation(), invocation);65                    s.markStubUsed(invocation);66                    invocation.markStubbed(new StubInfoImpl(s));67                    return s;68                }69            }70        }71        return null;72    }73    public void addAnswerForVoidMethod(Answer answer) {74        answersForStubbing.add(answer);75    }76    public void setAnswersForStubbing(List<Answer<?>> answers) {77        answersForStubbing.addAll(answers);78    }79    public boolean hasAnswersForStubbing() {80        return !answersForStubbing.isEmpty();81    }82    public boolean hasInvocationForPotentialStubbing() {83        return !registeredInvocations.isEmpty();84    }85    public void setMethodForStubbing(InvocationMatcher invocation) {86        invocationForStubbing = invocation;87        assert hasAnswersForStubbing();88        for (int i = 0; i < answersForStubbing.size(); i++) {89            addAnswer(answersForStubbing.get(i), i != 0);90        }91        answersForStubbing.clear();92    }93    @Override94    public String toString() {95        return "invocationForStubbing: " + invocationForStubbing;96    }97    public List<Invocation> getInvocations() {98        return registeredInvocations.getAll();99    }100    public void clearInvocations() {101        registeredInvocations.clear();...

Source:Answers.java

...19 * Example:20 * <pre class="code"><code class="java">21 *   &#064;Mock(answer = RETURNS_DEEP_STUBS) UserProvider userProvider;22 * </code></pre>23 * <b>This is not the full list</b> of Answers available in Mockito. Some interesting answers can be found in org.mockito.stubbing.answers package.24 */25public enum Answers implements Answer<Object>{26    /**27     * The default configured answer of every mock.28     *29     * <p>Please see the {@link org.mockito.Mockito#RETURNS_DEFAULTS} documentation for more details.</p>30     *31     * @see org.mockito.Mockito#RETURNS_DEFAULTS32     */33    RETURNS_DEFAULTS(new GloballyConfiguredAnswer()),34    /**35     * An answer that returns smart-nulls.36     *37     * <p>Please see the {@link org.mockito.Mockito#RETURNS_SMART_NULLS} documentation for more details.</p>38     *39     * @see org.mockito.Mockito#RETURNS_SMART_NULLS40     */41    RETURNS_SMART_NULLS(new ReturnsSmartNulls()),42    /**43     * An answer that returns <strong>mocks</strong> (not stubs).44     *45     * <p>Please see the {@link org.mockito.Mockito#RETURNS_MOCKS} documentation for more details.</p>46     *47     * @see org.mockito.Mockito#RETURNS_MOCKS48     */49    RETURNS_MOCKS(new ReturnsMocks()),50    /**51     * An answer that returns <strong>deep stubs</strong> (not mocks).52     *53     * <p>Please see the {@link org.mockito.Mockito#RETURNS_DEEP_STUBS} documentation for more details.</p>54     *55     * @see org.mockito.Mockito#RETURNS_DEEP_STUBS56     */57    RETURNS_DEEP_STUBS(new ReturnsDeepStubs()),58    /**59     * An answer that calls the real methods (used for partial mocks).60     *61     * <p>Please see the {@link org.mockito.Mockito#CALLS_REAL_METHODS} documentation for more details.</p>62     *63     * @see org.mockito.Mockito#CALLS_REAL_METHODS64     */65    CALLS_REAL_METHODS(new CallsRealMethods()),66    /**67     * An answer that tries to return itself. This is useful for mocking {@code Builders}.68     *69     * <p>Please see the {@link org.mockito.Mockito#RETURNS_SELF} documentation for more details.</p>70     *71     * @see org.mockito.Mockito#RETURNS_SELF72     */73    RETURNS_SELF(new TriesToReturnSelf())74    ;75    private final Answer<Object> implementation;76    Answers(Answer<Object> implementation) {77        this.implementation = implementation;78    }79    /**80     * @deprecated as of 2.0. Use the enum-constant directly, instead of this getter. This method will be removed in a future release<br>81     * E.g. instead of <code>Answers.CALLS_REAL_METHODS.get()</code> use <code>Answers.CALLS_REAL_METHODS</code> .82     */83    @Deprecated84    public Answer<Object> get() {85        return this;86    }87    public Object answer(InvocationOnMock invocation) throws Throwable {88        return implementation.answer(invocation);89    } 90}...

Source:StubberImpl.java

...26		if (!MockUtil.isMock(mock)) {27			throw notAMockPassedToWhenMethod();28		}29        30		MockUtil.getMockHandler(mock).setAnswersForStubbing(answers);31        return mock;32    }33    public Stubber doReturn(Object toBeReturned) {34        return doReturnValues(toBeReturned);35    }36    public Stubber doReturn(Object toBeReturned, Object... nextToBeReturned) {37        return doReturnValues(toBeReturned).doReturnValues(nextToBeReturned);38    }39    private StubberImpl doReturnValues(Object... toBeReturned) {40        if(toBeReturned == null) {41            answers.add(new Returns(null));42            return this;43        }44        for (Object r : toBeReturned) {...

Answers

Using AI Code Generation

1import static org.mockito.Mockito.*;2import static org.junit.Assert.*;3import org.junit.Test;4public class TestJunit1 {5   public void testAdd() {6      Answers mockedList = mock(Answers.class);7      when(mockedList.getAnswer()).thenReturn("42");8      assertEquals("42",mockedList.getAnswer());9   }10}

Answers

Using AI Code Generation

1import org.mockito.Answers;2import org.mockito.Mock;3import org.mockito.MockitoAnnotations;4import org.testng.annotations.BeforeMethod;5import org.testng.annotations.Test;6import static org.mockito.Mockito.*;7public class AnswersTest {8    @Mock(answer = Answers.RETURNS_SMART_NULLS)9    private List mockedList;10    public void initMocks() {11        MockitoAnnotations.initMocks(this);12    }13    public void testStubbing() {14        mockedList.add("one");15        System.out.println(mockedList.get(0));16        System.out.println(mockedList.get(999));17    }18}19import org.mockito.Mock;20import org.mockito.MockitoAnnotations;21import org.mockito.internal.stubbing.answers.ReturnsMocks;22import org.testng.annotations.BeforeMethod;23import org.testng.annotations.Test;24import static org.mockito.Mockito.*;25public class ReturnsMocksTest {26    private List mockedList;27    public void initMocks() {28        MockitoAnnotations.initMocks(this);29    }30    public void testStubbing() {31        mockedList.add("one");32        System.out.println(mockedList.get(0));33        System.out.println(mockedList.get(999));34    }35}36import org.mockito.Mock;37import org.mockito.MockitoAnnotations;38import org.mockito.internal.stubbing.answers.ReturnsEmptyValues;39import org.testng.annotations.BeforeMethod;40import org.testng.annotations.Test;41import static org.mockito.Mockito.*;42public class ReturnsEmptyValuesTest {43    private List mockedList;44    public void initMocks() {45        MockitoAnnotations.initMocks(this);46    }47    public void testStubbing() {48        mockedList.add("one");49        System.out.println(mockedList.get(0));50        System.out.println(mockedList.get(999));51    }52}53import org.mockito.Mock;54import org.mockito.MockitoAnnotations;55import org.mockito.internal.stubbing.answers.ReturnsDelegatesTo;56import org.testng.annotations.BeforeMethod;57import org.testng.annotations.Test;58import static org.mockito.Mockito.*;59public class ReturnsDelegatesToTest {60    private List mockedList;61    public void initMocks()

Answers

Using AI Code Generation

1import static org.mockito.Mockito.*;2import java.util.List;3public class MockitoTest {4	public static void main(String[] args) {5		List mockedList = mock(List.class);6		mockedList.add("one");7		mockedList.clear();8		System.out.println(mockedList);9		verify(mockedList).add("one");10		verify(mockedList).clear();11	}12}

Answers

Using AI Code Generation

1package com.ack.j2se.mockito;2import static org.mockito.Mockito.*;3import java.util.LinkedList;4import java.util.List;5public class AnswersTest {6  public static void main( String[] args ) {7    LinkedList mockedList = mock( LinkedList.class );8    when( mockedList.get( 0 ) ).thenReturn( "first" );9    when( mockedList.get( 1 ) ).thenThrow( new RuntimeException() );10    System.out.println( mockedList.get( 0 ) );11    System.out.println( mockedList.get( 1 ) );12    System.out.println( mockedList.get( 999 ) );13    verify( mockedList ).get( 0 );14  }15}16package com.ack.j2se.mockito;17import static org.mockito.Mockito.*;18import java.util.LinkedList;19import java.util.List;20public class ArgumentMatcherTest {21  public static void main( String[] args ) {22    LinkedList mockedList = mock( LinkedList.class );23    when( mockedList.get( anyInt() ) ).thenReturn( "element" );24    when( mockedList.contains( argThat( new IsValid() ) ) ).thenReturn( true );25    System.out.println( mockedList.get( 999 ) );26    verify( mockedList ).get( anyInt() );27    verify( mockedList ).add( argThat( ( String argument ) -> argument.length

Answers

Using AI Code Generation

1import static org.mockito.Mockito.*;2import org.mockito.Mockito;3import org.mockito.MockitoAnnotations;4import org.mockito.Mock;5import org.mockito.InjectMocks;6import org.mockito.Spy;7import org.mockito.runners.MockitoJUnitRunner;8import org.mockito.ArgumentCaptor;9import org.mockito.exceptions.verification.NoInteractionsWanted;10import org.mockito.exceptions.verification.WantedButNotInvoked;11import org.mockito.exceptions.verification.VerificationInOrderFailure;12import org.mockito.exceptions.verification.NeverWantedButInvoked;13import org.mockito.exceptions.verification.TooLittleActualInvocations;14import org.mockito.exceptions.verification.TooManyActualInvocations;15import org.mockito.exceptions.verification.junit.ArgumentsAreDifferent;16import org.mockito.exceptions.verification.junit.NoInteractionsWanted;17import org.mockito.exceptions.verification.junit.WantedButNotInvoked;18import org.mockito.exceptions.verification.junit.VerificationInOrderFailure;19import org.mockito.exceptions.verification.junit.NeverWantedButInvoked;20import org.mockito.exceptions.verification.junit.TooLittleActualInvocations;21import org.mockito.exceptions.verification.junit.TooManyActualInvocations;22import org.mockito.exceptions.verification.juni

Answers

Using AI Code Generation

1import static org.mockito.Mockito.*;2import org.mockito.*;3import org.mockito.invocation.InvocationOnMock;4import org.mockito.stubbing.Answer;5import org.mockito.stubbing.Stubber;6import org.mockito.stubbing.VoidMethodStubber;7public class Test {8    public static void main(String[] args) {9        Answers answers = new Answers() {10            public Object answer(InvocationOnMock invocation) throws Throwable {11                return null;12            }13            public Stubber doAnswer(Answer answer) {14                return null;15            }

Answers

Using AI Code Generation

1import static org.mockito.Mockito.*;2import org.mockito.*;3import org.junit.*;4import org.junit.runner.*;5import org.junit.runners.*;6import org.junit.runners.Parameterized.*;7import org.junit.runners.Parameterized;8import java.util.*;9import java.util.Arrays;10import java.util.Collection;11import java.util.List;12import java.util.ArrayList;13import java.util.Iterator;14@RunWith(Parameterized.class)15public class TestAnswers{16  private Answers answers;17  private String input;18  private String expected;19  public TestAnswers(String input, String expected){20    this.input = input;21    this.expected = expected;22  }23  public void initialize(){24    answers = new Answers();25  }26  public static Collection<String[]> answers(){27    return Arrays.asList(new String[][]{28      {"1+1","2"},{"1+2","3"},{"1+3","4"},{"1+4","5"},{"1+5","6"},{"1+6","7"},{"1+7","8"},{"1+8","9"},{"1+9","10"},{"1+10","11"},{"1+11","12"},{"1+12","13"},{"1+13","14"},{"1+14","15"},{"1+15","16"},{"1+16","17"},{"1+17","18"},{"1+18","19"},{"1+19","20"},{"1+20","21"},{"1+21","22"},{"1+22","23"},{"1+23","24"},{"1+24","25"},{"1+25","26"},{"1+26","27"},{"1+27","28"},{"1+28","29"},{"1+29","30"},{"1+30","31"},{"1+31","32"},{"1+32","33"},{"1+33","34"},{"1+34","35"},{"1+35","36"},{"1+36","37"},{"1+37","38"},{"1+38","39"},{"1+39","40"},{"1+40","41"},{"1+41","42"},{"1+42","43"},{"1+43","44"},{"1+44","45"},{"1+45","46"},{"1+46","47"},{"1+47","48"},{"1+48","49"},{"1+49","50"},{"1+50","51"},{"1+51","52"},{"1+52","53"},{"1+53","54"},{"1+54","55"},{"1+55","56"},{"1+56","57"},{"1+57","58"},{"1

Answers

Using AI Code Generation

1import org.mockito.*;2import static org.mockito.Mockito.*;3import static org.junit.Assert.*;4import org.junit.*;5import java.util.*;6public class AnswersTest{7	public void testAnswers(){8		List mock = mock(List.class);9		when(mock.size()).thenAnswer(new Answer(){10			public Object answer(InvocationOnMock invocation){11				return 100;12			}13		});14		System.out.println("mock.size() = " + mock.size());15		System.out.println("mock.size() = " + mock.size());16	}17}

Answers

Using AI Code Generation

1package org.mockito;2import static org.mockito.Mockito.*;3import static org.junit.Assert.*;4import org.junit.Test;5public class TestAnswers {6	public void testAnswers() {7		Answers answers = mock(Answers.class);8		when(answers.getAnswers(anyInt())).thenReturn("Mockito Answers");9		assertEquals(answers.getAnswers(1), "Mockito Answers");10	}11}

Answers

Using AI Code Generation

1package org.mockito;2import static org.mockito.Mockito.*;3import org.mockito.Answers;4public class Test {5    public static void main(String[] args) {6        Answers ans = mock(Answers.class);7        when(ans.answer()).thenReturn("Hello");8        System.out.println(ans.answer());9    }10}11package org.mockito;12import static org.mockito.Mockito.*;13import org.mockito.ReturnsEmptyValues;14public class Test {15    public static void main(String[] args) {16        ReturnsEmptyValues ans = mock(ReturnsEmptyValues.class);17        when(ans.answer()).thenReturn("Hello");18        System.out.println(ans.answer());19    }20}21package org.mockito;22import static org.mockito.Mockito.*;23import org.mockito.ReturnsMocks;24public class Test {25    public static void main(String[] args) {26        ReturnsMocks ans = mock(ReturnsMocks.class);27        when(ans.answer()).thenReturn("Hello");28        System.out.println(ans.answer());29    }30}31package org.mockito;32import static org.mockito.Mockito.*;33import org.mockito.ReturnsSmartNulls;34public class Test {35    public static void main(String[] args) {36        ReturnsSmartNulls ans = mock(ReturnsSmartNulls.class);37        when(ans.answer()).thenReturn("Hello");38        System.out.println(ans.answer());39    }40}41package org.mockito;42import static org.mockito.Mockito.*;43import org.mockito.ReturnsDeepStubs;44public class Test {45    public static void main(String[] args) {46        ReturnsDeepStubs ans = mock(ReturnsDeepStubs.class);47        when(ans.answer()).thenReturn("Hello");48        System.out.println(ans.answer());49    }50}51package org.mockito;52import static org.mockito.Mockito.*;53import org.mockito.DoNotStub;54public class Test {55    public static void main(String[] args) {56        DoNotStub ans = mock(DoNotStub.class);57        when(ans.answer()).thenReturn("Hello");58public class Test {59    public static void main(String[] args) {60        Answers answers = new Answers() {61            public Object answer(InvocationOnMock invocation) throws Throwable {62                return null;63            }64            public Stubber doAnswer(Answer answer) {65                return null;66            }

Answers

Using AI Code Generation

1package org.mockito;2import static org.mockito.Mockito.*;3import static org.junit.Assert.*;4import org.junit.Test;5public class TestAnswers {6	public void testAnswers() {7		Answers answers = mock(Answers.class);8		when(answers.getAnswers(anyInt())).thenReturn("Mockito Answers");9		assertEquals(answers.getAnswers(1), "Mockito Answers");10	}11}

Answers

Using AI Code Generation

1package org.mockito;2import static org.mockito.Mockito.*;3import org.mockito.Answers;4public class Test {5    public static void main(String[] args) {6        Answers ans = mock(Answers.class);7        when(ans.answer()).thenReturn("Hello");8        System.out.println(ans.answer());9    }10}11package org.mockito;12import static org.mockito.Mockito.*;13import org.mockito.ReturnsEmptyValues;14public class Test {15    public static void main(String[] args) {16        ReturnsEmptyValues ans = mock(ReturnsEmptyValues.class);17        when(ans.answer()).thenReturn("Hello");18        System.out.println(ans.answer());19    }20}21package org.mockito;22import static org.mockito.Mockito.*;23import org.mockito.ReturnsMocks;24public class Test {25    public static void main(String[] args) {26        ReturnsMocks ans = mock(ReturnsMocks.class);27        when(ans.answer()).thenReturn("Hello");28        System.out.println(ans.answer());29    }30}31package org.mockito;32import static org.mockito.Mockito.*;33import org.mockito.ReturnsSmartNulls;34public class Test {35    public static void main(String[] args) {36        ReturnsSmartNulls ans = mock(ReturnsSmartNulls.class);37        when(ans.answer()).thenReturn("Hello");38        System.out.println(ans.answer());39    }40}41package org.mockito;42import static org.mockito.Mockito.*;43import org.mockito.ReturnsDeepStubs;44public class Test {45    public static void main(String[] args) {46        ReturnsDeepStubs ans = mock(ReturnsDeepStubs.class);47        when(ans.answer()).thenReturn("Hello");48        System.out.println(ans.answer());49    }50}51package org.mockito;52import static org.mockito.Mockito.*;53import org.mockito.DoNotStub;54public class Test {55    public static void main(String[] args) {56        DoNotStub ans = mock(DoNotStub.class);57        when(ans.answer()).thenReturn("Hello");

Answers

Using AI Code Generation

1import static org.mockito.Mockito.*;2import org.mockito.*;3import org.mockito.invocation.InvocationOnMock;4import org.mockito.stubbing.Answer;5import org.mockito.stubbing.Stubber;6import org.mockito.stubbing.VoidMethodStubber;7public class Test {8    public static void main(String[] args) {9        Answers answers = new Answers() {10            public Object answer(InvocationOnMock invocation) throws Throwable {11                return null;12            }13            public Stubber doAnswer(Answer answer) {14                return null;15            }

Answers

Using AI Code Generation

1package org.mockito;2import static org.mockito.Mockito.*;3import org.mockito.Answers;4public class Test {5    public static void main(String[] args) {6        Answers ans = mock(Answers.class);7        when(ans.answer()).thenReturn("Hello");8        System.out.println(ans.answer());9    }10}11package org.mockito;12import static org.mockito.Mockito.*;13import org.mockito.ReturnsEmptyValues;14public class Test {15    public static void main(String[] args) {16        ReturnsEmptyValues ans = mock(ReturnsEmptyValues.class);17        when(ans.answer()).thenReturn("Hello");18        System.out.println(ans.answer());19    }20}21package org.mockito;22import static org.mockito.Mockito.*;23import org.mockito.ReturnsMocks;24public class Test {25    public static void main(String[] args) {26        ReturnsMocks ans = mock(ReturnsMocks.class);27        when(ans.answer()).thenReturn("Hello");28        System.out.println(ans.answer());29    }30}31package org.mockito;32import static org.mockito.Mockito.*;33import org.mockito.ReturnsSmartNulls;34public class Test {35    public static void main(String[] args) {36        ReturnsSmartNulls ans = mock(ReturnsSmartNulls.class);37        when(ans.answer()).thenReturn("Hello");38        System.out.println(ans.answer());39    }40}41package org.mockito;42import static org.mockito.Mockito.*;43import org.mockito.ReturnsDeepStubs;44public class Test {45    public static void main(String[] args) {46        ReturnsDeepStubs ans = mock(ReturnsDeepStubs.class);47        when(ans.answer()).thenReturn("Hello");48        System.out.println(ans.answer());49    }50}51package org.mockito;52import static org.mockito.Mockito.*;53import org.mockito.DoNotStub;54public class Test {55    public static void main(String[] args) {56        DoNotStub ans = mock(DoNotStub.class);57        when(ans.answer()).thenReturn("Hello");

Automation Testing Tutorials

Learn to execute automation testing from scratch with LambdaTest Learning Hub. Right from setting up the prerequisites to run your first automation test, to following best practices and diving deeper into advanced test scenarios. LambdaTest Learning Hubs compile a list of step-by-step guides to help you be proficient with different test automation frameworks i.e. Selenium, Cypress, TestNG etc.