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

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

copy

Full Screen

...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}...

Full Screen

Full Screen
copy

Full Screen

...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();...

Full Screen

Full Screen
copy

Full Screen

...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));...

Full Screen

Full Screen
copy

Full Screen

...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}...

Full Screen

Full Screen
copy

Full Screen

...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}...

Full Screen

Full Screen
copy

Full Screen

...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 }...

Full Screen

Full Screen
copy

Full Screen

...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 } ...

Full Screen

Full Screen
copy

Full Screen

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}...

Full Screen

Full Screen

delegatesTo

Using AI Code Generation

copy

Full Screen

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)

Full Screen

Full Screen

delegatesTo

Using AI Code Generation

copy

Full Screen

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}

Full Screen

Full Screen

delegatesTo

Using AI Code Generation

copy

Full Screen

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);

Full Screen

Full Screen

delegatesTo

Using AI Code Generation

copy

Full Screen

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}

Full Screen

Full Screen

delegatesTo

Using AI Code Generation

copy

Full Screen

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}

Full Screen

Full Screen

delegatesTo

Using AI Code Generation

copy

Full Screen

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}

Full Screen

Full Screen

StackOverFlow community discussions

Questions
Discussion

Using PowerMock or How much do you let your tests affect your design?

Mockito and HttpServletResponse - write output to textfile

Using Mockito, how do I intercept a callback object on a void method?

Ambiguous Mockito - 0 Matchers Expected, 1 Recorded (InvalidUseOfMatchersException)

Mockito Spy - partial mocking not working?

Is it discouraged to use @Spy and @InjectMocks on the same field?

How to use Mockito to show all invocations on a mock

How to disable Spring autowiring in unit tests for @Configuration/@Bean usage

Mockito: How to verify a method was called only once with exact parameters ignoring calls to other methods?

How do I mock a REST server with with multiple endpoints in the same test in Java?

I have to strongly disagree with this question.

There is no justification for a mocking tool that limits design choices. It's not just static methods that are ruled out by EasyMock, EasyMock Class Extension, jMock, Mockito, and others. These tools also prevent you from declaring classes and methods final, and that alone is a very bad thing. (If you need one authoritative source that defends the use of final for classes and methods, see the "Effective Java" book, or watch this presentation from the author.)

And "initialising collaborators rather than injecting them" often is the best design, in my experience. If you decompose a class that solves some complex problem by creating helper classes that are instantiated from that class, you can take advantage of the ability to safely pass specific data to those child objects, while at the same time hiding them from client code (which provided the full data used in the high-level operation). Exposing such helper classes in the public API violates the principle of information hiding, breaking encapsulation and increasing the complexity of client code.

The abuse of DI leads to stateless objects which really should be stateful because they will almost always operate on data that is specific to the business operation. This is not only true for non-public helper classes, but also for public "business service" classes called from UI/presentation objects. Such service classes are usually internal code (to a single business application) that is inherently not reusable and have only a few clients (often only one) because such code is by nature domain/use-case specific. In such a case (a very common one, by the way) it makes much more sense to have the UI class directly instantiate the business service class, passing data provided by the user through a constructor.

Being able to easily write unit tests for code like this is precisely what led me to create the JMockit toolkit. I wasn't thinking about legacy code, but about simplicity and economy of design. The results I achieved so far convinced me that testability really is a function of two variables: the maintainability of production code, and the limitations of the mocking tool used to test that code. So, if you remove all limitations from the mocking tool, what do you get?

https://stackoverflow.com/questions/427750/using-powermock-or-how-much-do-you-let-your-tests-affect-your-design

Blogs

Check out the latest blogs from LambdaTest on this topic:

Continuous Integration explained with jenkins deployment

Continuous integration is a coding philosophy and set of practices that encourage development teams to make small code changes and check them into a version control repository regularly. Most modern applications necessitate the development of code across multiple platforms and tools, so teams require a consistent mechanism for integrating and validating changes. Continuous integration creates an automated way for developers to build, package, and test their applications. A consistent integration process encourages developers to commit code changes more frequently, resulting in improved collaboration and code quality.

What Agile Testing (Actually) Is

So, now that the first installment of this two fold article has been published (hence you might have an idea of what Agile Testing is not in my opinion), I’ve started feeling the pressure to explain what Agile Testing actually means to me.

Dec’22 Updates: The All-New LT Browser 2.0, XCUI App Automation with HyperExecute, And More!

Greetings folks! With the new year finally upon us, we’re excited to announce a collection of brand-new product updates. At LambdaTest, we strive to provide you with a comprehensive test orchestration and execution platform to ensure the ultimate web and mobile experience.

Best 23 Web Design Trends To Follow In 2023

Having a good web design can empower business and make your brand stand out. According to a survey by Top Design Firms, 50% of users believe that website design is crucial to an organization’s overall brand. Therefore, businesses should prioritize website design to meet customer expectations and build their brand identity. Your website is the face of your business, so it’s important that it’s updated regularly as per the current web design trends.

How To Write End-To-End Tests Using Cypress App Actions

When I started writing tests with Cypress, I was always going to use the user interface to interact and change the application’s state when running tests.

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.

LambdaTest Learning Hubs:

YouTube

You could also refer to video tutorials over LambdaTest YouTube channel to get step by step demonstration from industry experts.

Run Mockito automation tests on LambdaTest cloud grid

Perform automation testing on 3000+ real desktop and mobile devices online.

Try LambdaTest Now !!

Get 100 minutes of automation test minutes FREE!!

Next-Gen App & Browser Testing Cloud

Was this article helpful?

Helpful

NotHelpful