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How to use delegatesTo method of org.mockito.AdditionalAnswers class

Best Mockito code snippet using org.mockito.AdditionalAnswers.delegatesTo

Source:StubbingWithDelegateTest.java

...14import java.util.List;15import static org.assertj.core.api.Assertions.assertThat;16import static org.junit.Assert.assertEquals;17import static org.junit.Assert.fail;18import static org.mockito.AdditionalAnswers.delegatesTo;19import static org.mockito.Mockito.doReturn;20import static org.mockito.Mockito.mock;21import static org.mockito.Mockito.when;22@SuppressWarnings("unchecked")23public class StubbingWithDelegateTest {24    public class FakeList<T> {25        private T value;26        public T get(int i) {27            return value;28        }29        public T set(int i, T value) {30            this.value = value;31            return value;32        }33        public int size() {34            return 10;35        }36        public ArrayList<T> subList(int fromIndex, int toIndex) {37            return new ArrayList<T>();38        }39    }40    public class FakeListWithWrongMethods<T> {41        public double size() {42            return 10;43        }44        public Collection<T> subList(int fromIndex, int toIndex) {45            return new ArrayList<T>();46        }47    }48    @Test49    public void when_not_stubbed_delegate_should_be_called() {50        List<String> delegatedList = new ArrayList<String>();51        delegatedList.add("un");52        List<String> mock = mock(List.class, delegatesTo(delegatedList));53        mock.add("two");54        assertEquals(2, mock.size());55    }56    @Test57    public void when_stubbed_the_delegate_should_not_be_called() {58        List<String> delegatedList = new ArrayList<String>();59        delegatedList.add("un");60        List<String> mock = mock(List.class, delegatesTo(delegatedList));61        doReturn(10).when(mock).size();62        mock.add("two");63        assertEquals(10, mock.size());64        assertEquals(2, delegatedList.size());65    }66    @Test67    public void delegate_should_not_be_called_when_stubbed2() {68        List<String> delegatedList = new ArrayList<String>();69        delegatedList.add("un");70        List<String> mockedList = mock(List.class, delegatesTo(delegatedList));71        doReturn(false).when(mockedList).add(Mockito.anyString());72        mockedList.add("two");73        assertEquals(1, mockedList.size());74        assertEquals(1, delegatedList.size());75    }76    @Test77    public void null_wrapper_dont_throw_exception_from_org_mockito_package() throws Exception {78        IMethods methods = mock(IMethods.class, delegatesTo(new MethodsImpl()));79        try {80            byte b = methods.byteObjectReturningMethod(); // real method returns null81            fail();82        } catch (Exception e) {83            assertThat(e.toString()).doesNotContain("org.mockito");84        }85    }86    @Test87    public void instance_of_different_class_can_be_called() {88        List<String> mock = mock(List.class, delegatesTo(new FakeList<String>()));89        mock.set(1, "1");90        assertThat(mock.get(1).equals("1")).isTrue();91    }92    @Test93    public void method_with_subtype_return_can_be_called() {94        List<String> mock = mock(List.class, delegatesTo(new FakeList<String>()));95        List<String> subList = mock.subList(0, 0);96        assertThat(subList.isEmpty()).isTrue();97    }98    @Test99    public void calling_missing_method_should_throw_exception() {100        List<String> mock = mock(List.class, delegatesTo(new FakeList<String>()));101        try {102            mock.isEmpty();103            fail();104        } catch (MockitoException e) {105            assertThat(e.toString()).contains("Methods called on mock must exist");106        }107    }108    @Test109    public void calling_method_with_wrong_primitive_return_should_throw_exception() {110        List<String> mock = mock(List.class, delegatesTo(new FakeListWithWrongMethods<String>()));111        try {112            mock.size();113            fail();114        } catch (MockitoException e) {115            assertThat(e.toString()).contains("Methods called on delegated instance must have compatible return type");116        }117    }118    @Test119    public void calling_method_with_wrong_reference_return_should_throw_exception() {120        List<String> mock = mock(List.class, delegatesTo(new FakeListWithWrongMethods<String>()));121        try {122            mock.subList(0, 0);123            fail();124        } catch (MockitoException e) {125            assertThat(e.toString()).contains("Methods called on delegated instance must have compatible return type");126        }127    }128    @Test129    public void exception_should_be_propagated_from_delegate() throws Exception {130        final RuntimeException failure = new RuntimeException("angry-method");131        IMethods methods = mock(IMethods.class, delegatesTo(new MethodsImpl() {132            @Override133            public String simpleMethod() {134                throw failure;135            }136        }));137        try {138            methods.simpleMethod(); // delegate throws an exception139            fail();140        } catch (RuntimeException e) {141            assertThat(e).isEqualTo(failure);142        }143    }144    interface Foo {145        int bar();146    }147    @Test148    public void should_call_anonymous_class_method() throws Throwable {149        Foo foo = new Foo() {150            public int bar() {151                return 0;152            }153        };154        Foo mock = mock(Foo.class);155        when(mock.bar()).thenAnswer(AdditionalAnswers.delegatesTo(foo));156        //when157        mock.bar();158        //then no exception is thrown159    }160}...

Source:AccumuloNoFlushS3FileSystemTest.java

...46  }47  public void testReadWriteOperations(AmazonS3 amazonS3, int writeMBs, ThrowingRunnable validation)48      throws Exception {49    when(amazonS3.getObjectMetadata(anyString(), anyString()))50        .then(AdditionalAnswers.delegatesTo(s3));51    when(amazonS3.getObject(any(GetObjectRequest.class))).then(AdditionalAnswers.delegatesTo(s3));52    when(amazonS3.putObject(any(PutObjectRequest.class))).then(AdditionalAnswers.delegatesTo(s3));53    when(amazonS3.initiateMultipartUpload(any(InitiateMultipartUploadRequest.class)))54        .then(AdditionalAnswers.delegatesTo(s3));55    when(amazonS3.uploadPart(any(UploadPartRequest.class))).then(AdditionalAnswers.delegatesTo(s3));56    when(amazonS3.completeMultipartUpload(any(CompleteMultipartUploadRequest.class)))57        .then(AdditionalAnswers.delegatesTo(s3));58    s3 = amazonS3;59    FileSystem fs = getFileSystem();60    Path testFile = new Path("/test/file");61    // minimum buffer is 5MB so we need to write 6 times62    byte[] testData = new byte[1 << 20];63    Random r = new Random();64    r.nextBytes(testData);65    FSDataOutputStream out = fs.create(testFile);66    for (int i = 0; i < writeMBs; i++) {67      out.write(testData, 0, testData.length);68      // Add a small delay after each loop to let any triggered flush task get far enough along69      Uninterruptibles.sleepUninterruptibly(10, TimeUnit.MILLISECONDS);70    }71    out.close();...

Source:MemoizedBiFunctionTest.java

...15    assertEquals((Integer) 5, memoizedAdder.apply(4, 1));16  }17  @Test18  public void makeOnlyOnce() throws Exception {19    // we'd ideally like a way to spy on a lambda directly, rather than doing this delegatesTo thing, but20    // Mockito doesn't support this yet, even in the newest versions. https://github.com/Eedanna/mockito/issues/48121    @SuppressWarnings("unchecked")22    BiFunction<Integer,Integer,Integer> spyAdder = mock(BiFunction.class, AdditionalAnswers.delegatesTo(adder));23    final BiFunction<Integer,Integer,Integer> memoizedAdder = MemoizedBiFunction.make(spyAdder);24    verify(spyAdder, never()).apply(1, 1);25    verify(spyAdder, never()).apply(4, 1);26    verify(spyAdder, never()).apply(1, 4);27    verify(spyAdder, never()).apply(4, 4);28    assertEquals((Integer) 2, memoizedAdder.apply(1, 1));29    assertEquals((Integer) 5, memoizedAdder.apply(4, 1));30    assertEquals((Integer) 5, memoizedAdder.apply(4, 1));31    verify(spyAdder, atMost(1)).apply(1, 1);32    verify(spyAdder, atMost(1)).apply(4, 1);33    verify(spyAdder, never()).apply(1, 4);34    verify(spyAdder, never()).apply(4, 4);35  }36  final TriFunction<BiFunction<Integer,Integer,Long>,Integer,Integer,Long> pascalInternal = (self, level, offset) -> {37    if (offset == 0 || offset >= level || offset < 0 || level < 0) {38      return 1L;39    } else {40      return self.apply(level - 1, offset) + self.apply(level - 1, offset - 1);41    }42  };43  private static long factorial(long n) {44    if (n == 0) {45      return 1;46    }47    long accumulator = 1;48    for (long i = 2; i <= n; i++) {49      accumulator *= i;50    }51    return accumulator;52  }53  /**54   * Computes n-choose-r = n! / (n-r)!r! .55   */56  private static long choose(long n, long r) {57    return factorial(n) / (factorial(n - r) * factorial(r));58  }59  //60  // Pascal's triangle: https://en.wikipedia.org/wiki/Pascal%27s_triangle61  // T[0,0] = 162  // T[level, 0] = 163  // T[level, level] = 164  // T[level, offset] = T[level - 1, offset] + T[level - 1, offset - 1]65  @Test66  public void pascalsTriangle() throws Exception {67    BiFunction<Integer,Integer,Long> pascal = MemoizedBiFunction.makeRecursive(pascalInternal);68    for (int n = 0; n < 10; n++) {69      for (int r = 0; r <= n; r++) {70        assertEquals((Long) choose(n, r), pascal.apply(n, r));71      }72    }73  }74  @Test75  public void spyPascal() throws Exception {76    @SuppressWarnings("unchecked")77    final TriFunction<BiFunction<Integer,Integer,Long>,Integer,Integer,Long> spyPascal =78        mock(TriFunction.class, AdditionalAnswers.delegatesTo(pascalInternal));79    final BiFunction<Integer,Integer,Long> pascal = MemoizedBiFunction.makeRecursive(spyPascal);80    verify(spyPascal, never()).apply(anyObject(), eq(0), eq(0));81    verify(spyPascal, never()).apply(anyObject(), eq(0), eq(1));82    verify(spyPascal, never()).apply(anyObject(), eq(1), eq(0));83    verify(spyPascal, never()).apply(anyObject(), eq(1), eq(1));84    for (int n = 0; n < 10; n++) {85      for (int r = 0; r <= n; r++) {86        assertEquals((Long) choose(n, r), pascal.apply(n, r));87      }88    }89    verify(spyPascal, atMost(1)).apply(anyObject(), eq(0), eq(0));90    verify(spyPascal, atMost(1)).apply(anyObject(), eq(0), eq(1));91    verify(spyPascal, atMost(1)).apply(anyObject(), eq(1), eq(0));92    verify(spyPascal, atMost(1)).apply(anyObject(), eq(1), eq(1));...

Source:MemoizedFunctionTest.java

...24    assertEquals((Integer) 5, memoizedIncrementer.apply(4));25  }26  @Test27  public void makeOnlyOnce() throws Exception {28    // we'd ideally like a way to spy on a lambda directly, rather than doing this delegatesTo thing, but29    // Mockito doesn't support this yet, even in the newest versions. https://github.com/Eedanna/mockito/issues/48130    @SuppressWarnings("unchecked")31    Function<Integer, Integer> spyIncrementer = mock(Function.class, AdditionalAnswers.delegatesTo(incrementer));32    final Function<Integer,Integer> memoizedIncrementer = MemoizedFunction.make(spyIncrementer);33    verify(spyIncrementer, never()).apply(1);34    verify(spyIncrementer, never()).apply(2);35    verify(spyIncrementer, never()).apply(3);36    verify(spyIncrementer, never()).apply(4);37    assertEquals((Integer) 2, memoizedIncrementer.apply(1));38    assertEquals((Integer) 5, memoizedIncrementer.apply(4));39    assertEquals((Integer) 5, memoizedIncrementer.apply(4));40    verify(spyIncrementer, atMost(1)).apply(1);41    verify(spyIncrementer, never()).apply(2);42    verify(spyIncrementer, never()).apply(3);43    verify(spyIncrementer, atMost(1)).apply(4);44  }45  private final BiFunction<Function<Long, Long>, Long, Long> fibonacci = (self, n) -> {46    // 1 1 2 3 5 8 13 ...47    if (n < 2) {48      return 1L;49    } else {50      return self.apply(n - 1) + self.apply(n - 2);51    }52  };53  @Test54  public void makeRecursive() throws Exception {55    final Function<Long, Long> memoFibonacci = MemoizedFunction.makeRecursive(fibonacci);56    assertEquals((Long) 13L, memoFibonacci.apply(6L));57  }58  @Test59  public void makeRecursiveOnlyOnce() throws Exception {60    // we'd ideally like a way to spy on a lambda directly, rather than doing this delegatesTo thing, but61    // Mockito doesn't support this yet, even in the newest versions. https://github.com/Eedanna/mockito/issues/48162    @SuppressWarnings("unchecked")63    final BiFunction<Function<Long, Long>, Long, Long> spyFibonacci =64        mock(BiFunction.class, AdditionalAnswers.delegatesTo(fibonacci));65    final Function<Long, Long> memoFibonacci = MemoizedFunction.makeRecursive(spyFibonacci);66    verify(spyFibonacci, never()).apply(any(), any());67    assertEquals((Long) 13L, memoFibonacci.apply(6L));68    verify(spyFibonacci, atMost(1)).apply(any(), eq((Long) 0L));69    verify(spyFibonacci, atMost(1)).apply(any(), eq((Long) 1L));70    verify(spyFibonacci, atMost(1)).apply(any(), eq((Long) 2L));71    verify(spyFibonacci, atMost(1)).apply(any(), eq((Long) 3L));72    verify(spyFibonacci, atMost(1)).apply(any(), eq((Long) 4L));73    verify(spyFibonacci, atMost(1)).apply(any(), eq((Long) 5L));74  }75}...

Source:TestApplicationContext.java

...26public class TestApplicationContext {27    @Primary28    @Bean(name = "delegatedMockCompanyRepository")29    public CompanyRepository delegatedMockCompanyRepository(final CompanyRepository real) {30        return Mockito.mock(CompanyRepository.class, AdditionalAnswers.delegatesTo(real));31    }32    @Primary33    @Bean(name = "delegatedMockUserRepository")34    public UserRepository delegatedMockUserRepository(final UserRepository real) {35        return Mockito.mock(UserRepository.class, AdditionalAnswers.delegatesTo(real));36    }37    @Primary38    @Bean(name = "delegatedMockPaymentOptionRepository")39    public PaymentOptionRepository delegatedMockPaymentOptionRepository(final PaymentOptionRepository real) {40        return Mockito.mock(PaymentOptionRepository.class, AdditionalAnswers.delegatesTo(real));41    }42    @Primary43    @Bean(name = "delegatedMockEmailSender")44    public EmailSender delegatedMockEmailSender(final EmailSender real) {45        return Mockito.mock(EmailSender.class, AdditionalAnswers.delegatesTo(real));46    }47    @Primary48    @Bean(name = "delegatedMockEmailMessageRepository")49    public EmailMessageRepository delegatedMockEmailMessageRepository(final EmailMessageRepository real) {50        return Mockito.mock(EmailMessageRepository.class, AdditionalAnswers.delegatesTo(real));51    }52    @Primary53    @Bean(name = "delegatedMockRegisterEmailTemplateStrategy")54    public RegisterEmailTemplateStrategy delegatedMockRegisterEmailTemplateStrategy(final RegisterEmailTemplateStrategy real) {55        return Mockito.mock(RegisterEmailTemplateStrategy.class, AdditionalAnswers.delegatesTo(real));56    }57    @Primary58    @Bean(name = "delegatedMockPasswordResetEmailTemplateStrategy")59    public PasswordResetEmailTemplateStrategy delegatedMockPasswordResetEmailTemplateStrategy(final PasswordResetEmailTemplateStrategy real) {60        return Mockito.mock(PasswordResetEmailTemplateStrategy.class, AdditionalAnswers.delegatesTo(real));61    }62    @Primary63    @Bean(name = "delegatedMockPasswordResetRepository")64    public PasswordResetRepository delegatedMockPasswordResetRepository(final PasswordResetRepository real) {65        return Mockito.mock(PasswordResetRepository.class, AdditionalAnswers.delegatesTo(real));66    }67}...

Source:MockingFinalClassWithToCallImplementedInterfacesUsingAdditionalAnswerTest.java

...4import org.mockito.AdditionalAnswers;5import org.mockito.Mockito;6import java.util.ArrayList;7import java.util.List;8import static org.mockito.AdditionalAnswers.delegatesTo;9import static org.mockito.Mockito.doReturn;10import static org.mockito.Mockito.mock;11/**12 * Useful for spies or partial mocks of objects that are difficult to mock or spy using the usual spy API. Since Mockito 1.10.11, the delegate may or may not be of the same type as the mock. If the type is different, a matching method needs to be found on delegate type otherwise an exception is thrown. Possible use cases for this feature:13 *14 * Final classes but with an interface15 * Already custom proxied object16 * Special objects with a finalize method, i.e. to avoid executing it 2 times17 * The difference with the regular spy:18 *19 * The regular spy (spy(Object)) contains all state from the spied instance and the methods are invoked on the spy. The spied instance is only used at mock creation to copy the state from. If you call a method on a regular spy and it internally calls other methods on this spy, those calls are remembered for verifications, and they can be effectively stubbed.20 * The mock that delegates simply delegates all methods to the delegate. The delegate is used all the time as methods are delegated onto it. If you call a method on a mock that delegates and it internally calls other methods on this mock, those calls are not remembered for verifications, stubbing does not have effect on them, too. Mock that delegates is less powerful than the regular spy but it is useful when the regular spy cannot be created.21 * See more information in docs for AdditionalAnswers.delegatesTo(Object).22 *23 */24public class MockingFinalClassWithToCallImplementedInterfacesUsingAdditionalAnswerTest {25    @Test26    void additionalAnswerTest() {27        DontYouDareToMockMe awesomeList = new DontYouDareToMockMe();28        Abcd mock = mock(Abcd.class, delegatesTo(awesomeList));29        /**30         *31         * This feature suffers from the same drawback as the spy. The mock32         * will call the delegate if you use regular when().then() stubbing33         * style. Since the real implementation is called this might have some34         * side effects. Therefore you should use35         * the doReturn|Throw|Answer|CallRealMethod stubbing style. Example:36         */37        Abcd listWithDelegate = mock(Abcd.class, AdditionalAnswers.delegatesTo(awesomeList));38        //Impossible: real method is called so listWithDelegate.get(0) throws IndexOutOfBoundsException (the list is yet empty)39        //Mockito.when(listWithDelegate.getValue()).thenReturn(156);40        //You have to use doReturn() for stubbing41        doReturn(159).when(listWithDelegate).getValue();42        Assertions.assertEquals(159, listWithDelegate.getValue());43        Mockito.verify(listWithDelegate).getValue();44    }45}46interface  Abcd{ public int getValue();}47final class DontYouDareToMockMe implements Abcd {48    @Override49    public int getValue() {50        return 0;51    }...

Source:ComponentMocker.java

...23    public static Object MockComponent(Class<?> clazz, Object bean){24        if(PluginManager.class.isAssignableFrom(bean.getClass()))25            return MockPluginManager((PluginManager)bean);26        else27            return Mockito.mock(clazz, AdditionalAnswers.delegatesTo(bean));28    }2930    private static Object MockPluginManager(PluginManager bean) {31        PluginManager mockedBean = Mockito.mock(bean.getClass(), AdditionalAnswers.delegatesTo(bean));32        List<ReactiveRestInterface> plugins= new ArrayList<>();33        plugins.add(newMockedReactiveRestInterface());34        doReturn(plugins).when(mockedBean).getExtensions(ReactiveRestInterface.class);35        return mockedBean;36    }3738    private static ReactiveRestInterface newMockedReactiveRestInterface() {39        ReactiveRestInterface plugin = Mockito.mock(ReactiveRestInterface.class);40        List<RouterFunction<?>> routes = new ArrayList<>();41        routes.add(newRouterFunction());42        doReturn(routes).when(plugin).routerFunctions();43        doReturn("mocked Plugin").when(plugin).identify();44        return plugin;45    }
...

Source:Helpers.java

1package com.github.joselion.maybe.helpers;2import static org.assertj.core.api.Assertions.assertThat;3import static org.mockito.AdditionalAnswers.delegatesTo;4import org.mockito.Mockito;5public class Helpers {6  @SuppressWarnings("unchecked")7  public static <T> T spyLambda(final T lambda) {8    Class<?>[] interfaces = lambda.getClass().getInterfaces();9    assertThat(interfaces).hasSize(1);10    return Mockito.mock((Class<T>) interfaces[0], delegatesTo(lambda));11  }12}...

delegatesTo

Using AI Code Generation

1import org.mockito.Mock;2import org.mockito.Mockito;3import org.mockito.MockitoAnnotations;4import org.mockito.stubbing.Answer;5import java.util.List;6import static org.mockito.AdditionalAnswers.delegatesTo;7import static org.mockito.Mockito.mock;8public class 1 {9    List<String> list;10    public static void main(String[] args) {11        1 test = new 1();12        test.testDelegatesTo();13    }14    public void testDelegatesTo() {15        MockitoAnnotations.initMocks(this);16        List<String> mock = mock(List.class, delegatesTo(list));17        mock.add("test");18        Mockito.verify(mock).add("test");19        Mockito.verify(list).add("test");20    }21}22    when(mock.getArticles()).thenReturn(articles);23at org.mockito.internal.stubbing.defaultanswers.ReturnsSmartNulls.answer(ReturnsSmartNulls.java:46)24at org.mockito.internal.handler.MockHandlerImpl.handle(MockHandlerImpl.java:93)25at org.mockito.internal.handler.NullResultGuardian.handle(NullResultGuardian.java:29)26at org.mockito.internal.handler.InvocationNotifierHandler.handle(InvocationNotifierHandler.java:38)27at org.mockito.internal.creation.bytebuddy.MockMethodInterceptor.doIntercept(MockMethodInterceptor.java:62)28at org.mockito.internal.creation.bytebuddy.MockMethodInterceptor.doIntercept(MockMethodInterceptor.java:47)29at org.mockito.internal.creation.bytebuddy.MockMethodInterceptor$DispatcherDefaultingToRealMethod.interceptSuperCallable(MockMethodInterceptor.java:115)30at org.mockito.internal.creation.bytebuddy.MockMethodInterceptor$DispatcherDefaultingToRealMethod.interceptSuperCallable(MockMethodInterceptor.java:108)31at org.mockito.internal.creation.bytebuddy.MockMethodInterceptor$DispatcherDefaultingToRealMethod.intercept(MockMethodInterceptor.java:93)32at org.mockito.internal.creation.bytebuddy.MockMethodInterceptor.intercept(MockMethodInterceptor.java:36)

delegatesTo

Using AI Code Generation

1package org.mockito.examples;2import org.junit.Test;3import org.junit.runner.RunWith;4import org.mockito.Mock;5import org.mockito.runners.MockitoJUnitRunner;6import static org.mockito.Mockito.*;7import static org.mockito.AdditionalAnswers.*;8import static org.junit.Assert.*;9import java.util.LinkedList;10import java.util.List;11@RunWith(MockitoJUnitRunner.class)12public class MockitoExample {13    List mockedList;14    public void testDelegatesTo() {15        when(mockedList.get(anyInt())).then(delegatesTo(new LinkedList()));16        mockedList.add("one");17        assertEquals("one", mockedList.get(0));18        assertEquals(null, mockedList.get(999));19    }20}

delegatesTo

Using AI Code Generation

1import static org.mockito.AdditionalAnswers.delegatesTo;2import static org.mockito.Mockito.*;3public class 1 {4    public static void main(String[] args) {5        List<String> list = mock(List.class);6        List<String> spy = spy(new LinkedList<String>());7        when(list.get(0)).thenReturn("Hello");8        doReturn("Hello").when(spy).get(0);9        System.out.println(list.get(0));10        System.out.println(spy.get(0));11        System.out.println(list.get(1));12        System.out.println(spy.get(1));13    }14}15import static org.mockito.AdditionalAnswers.delegatesTo;16import static org.mockito.Mockito.*;17public class 2 {18    public static void main(String[] args) {19        List<String> list = mock(List.class);20        List<String> spy = spy(new LinkedList<String>());21        when(list.get(0)).thenAnswer(delegatesTo(spy));22        doReturn("Hello").when(spy).get(0);

delegatesTo

Using AI Code Generation

1import org.mockito.AdditionalAnswers;2import org.mockito.Mock;3import org.mockito.MockitoAnnotations;4import org.mockito.stubbing.Answer;5import org.junit.Before;6import org.junit.Test;7import static org.mockito.Mockito.*;8public class TestMockitoDelegatesTo {9    private Foo foo;10    public void setup() {11        MockitoAnnotations.initMocks(this);12    }13    public void delegatesToTest() {14        Answer<String> answer = AdditionalAnswers.delegatesTo(foo);15        when(foo.doSomething(anyString())).then(answer);16        foo.doSomething("test");17        verify(foo).doSomething("test");18    }19    interface Foo {20        String doSomething(String s);21    }22}23import org.mockito.AdditionalAnswers;24import org.mockito.Mock;25import org.mockito.MockitoAnnotations;26import org.mockito.stubbing.Answer;27import org.junit.Before;28import org.junit.Test;29import static org.mockito.Mockito.*;30public class TestMockitoDelegatesTo {31    private Foo foo;32    public void setup() {33        MockitoAnnotations.initMocks(this);34    }35    public void delegatesToTest() {36        Answer<String> answer = AdditionalAnswers.delegatesTo(foo);37        when(foo.doSomething(anyString())).then(answer);38        foo.doSomething("test");39        verify(foo).doSomething("test");40    }41    interface Foo {42        String doSomething(String s);43    }44}45import org.mockito.AdditionalAnswers;46import org.mockito.Mock;47import org.mockito.MockitoAnnotations;48import org.mockito.stubbing.Answer;49import org.junit.Before;50import org.junit.Test;51import static org.mockito.Mockito.*;52public class TestMockitoDelegatesTo {53    private Foo foo;54    public void setup() {55        MockitoAnnotations.initMocks(this);56    }57    public void delegatesToTest() {58        Answer<String> answer = AdditionalAnswers.delegatesTo(foo);59        when(foo.doSomething(anyString())).then(answer);60        foo.doSomething("test");61        verify(foo).doSomething("test");62    }63    interface Foo {64        String doSomething(String s);65    }66}

delegatesTo

Using AI Code Generation

1import static org.mockito.AdditionalAnswers.delegatesTo;2class 1 {3    public void test() {4        List<String> list = mock(List.class, delegatesTo(new LinkedList<String>()));5        list.add("one");6        verify(list).add("one");7        assertEquals(1, list.size());8    }9}10import static org.mockito.AdditionalAnswers.delegatesTo;11class 2 {12    public void test() {13        List<String> list = mock(List.class, delegatesTo(new LinkedList<String>()));14        list.add("one");15        verify(list).add("one");16        assertEquals(1, list.size());17    }18}19import static org.mockito.AdditionalAnswers.delegatesTo;20class 3 {21    public void test() {22        List<String> list = mock(List.class, delegatesTo(new LinkedList<String>()));23        list.add("one");24        verify(list).add("one");25        assertEquals(1, list.size());26    }27}28import static org.mockito.AdditionalAnswers.delegatesTo;29class 4 {30    public void test() {31        List<String> list = mock(List.class, delegatesTo(new LinkedList<String>()));32        list.add("one");33        verify(list).add("one");34        assertEquals(1, list.size());35    }36}37import static org.mockito.AdditionalAnswers.delegatesTo;38class 5 {39    public void test() {40        List<String> list = mock(List.class, delegatesTo(new LinkedList<String>()));41        list.add("one");42        verify(list).add("one");43        assertEquals(1, list.size());44    }45}

delegatesTo

Using AI Code Generation

1import static org.mockito.AdditionalAnswers.delegatesTo;2import static org.mockito.Mockito.mock;3public class MockitoTest {4    public static void main(String[] args) {5        List mockedList = mock(List.class, delegatesTo(new LinkedList()));6        mockedList.add("one");7        mockedList.clear();8        verify(mockedList).add("one");9        verify(mockedList).clear();10    }11}

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.