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How to use answer method of org.mockitousage.stubbing.StubbingWithAdditionalAnswersTest class

Best Mockito code snippet using org.mockitousage.stubbing.StubbingWithAdditionalAnswersTest.answer

Source:StubbingWithAdditionalAnswersTest.java

...4 */5package org.mockitousage.stubbing;6import static org.assertj.core.api.Assertions.assertThat;7import static org.assertj.core.api.Assertions.within;8import static org.mockito.AdditionalAnswers.answer;9import static org.mockito.AdditionalAnswers.answerVoid;10import static org.mockito.AdditionalAnswers.returnsArgAt;11import static org.mockito.AdditionalAnswers.returnsFirstArg;12import static org.mockito.AdditionalAnswers.returnsLastArg;13import static org.mockito.AdditionalAnswers.returnsSecondArg;14import static org.mockito.AdditionalAnswers.answersWithDelay;15import static org.mockito.BDDMockito.any;16import static org.mockito.BDDMockito.anyInt;17import static org.mockito.BDDMockito.anyString;18import static org.mockito.BDDMockito.eq;19import static org.mockito.BDDMockito.given;20import static org.mockito.BDDMockito.mock;21import static org.mockito.BDDMockito.times;22import static org.mockito.BDDMockito.verify;23import org.junit.Test;24import org.junit.runner.RunWith;25import org.mockito.Mock;26import org.mockito.junit.MockitoJUnitRunner;27import org.mockito.stubbing.Answer1;28import org.mockito.stubbing.Answer2;29import org.mockito.stubbing.Answer3;30import org.mockito.stubbing.Answer4;31import org.mockito.stubbing.Answer5;32import org.mockito.stubbing.VoidAnswer1;33import org.mockito.stubbing.VoidAnswer2;34import org.mockito.stubbing.VoidAnswer3;35import org.mockito.stubbing.VoidAnswer4;36import org.mockito.stubbing.VoidAnswer5;37import org.mockitousage.IMethods;38import java.util.Date;39@RunWith(MockitoJUnitRunner.class)40public class StubbingWithAdditionalAnswersTest {41    @Mock IMethods iMethods;42    @Test43    public void can_return_arguments_of_invocation() throws Exception {44        given(iMethods.objectArgMethod(any())).will(returnsFirstArg());45        given(iMethods.threeArgumentMethod(eq(0), any(), anyString())).will(returnsSecondArg());46        given(iMethods.threeArgumentMethod(eq(1), any(), anyString())).will(returnsLastArg());47        assertThat(iMethods.objectArgMethod("first")).isEqualTo("first");48        assertThat(iMethods.threeArgumentMethod(0, "second", "whatever")).isEqualTo("second");49        assertThat(iMethods.threeArgumentMethod(1, "whatever", "last")).isEqualTo("last");50    }51    @Test52    public void can_return_after_delay() throws Exception {53        final long sleepyTime = 500L;54        given(iMethods.objectArgMethod(any())).will(answersWithDelay(sleepyTime, returnsFirstArg()));55        final Date before = new Date();56        assertThat(iMethods.objectArgMethod("first")).isEqualTo("first");57        final Date after = new Date();58        final long timePassed = after.getTime() - before.getTime();59        assertThat(timePassed).isCloseTo(sleepyTime, within(15L));60    }61    @Test62    public void can_return_expanded_arguments_of_invocation() throws Exception {63        given(iMethods.varargsObject(eq(1), any())).will(returnsArgAt(3));64        assertThat(iMethods.varargsObject(1, "bob", "alexander", "alice", "carl")).isEqualTo("alice");65    }66    @Test67    public void can_return_primitives_or_wrappers() throws Exception {68        given(iMethods.toIntPrimitive(anyInt())).will(returnsFirstArg());69        given(iMethods.toIntWrapper(anyInt())).will(returnsFirstArg());70        assertThat(iMethods.toIntPrimitive(1)).isEqualTo(1);71        assertThat(iMethods.toIntWrapper(1)).isEqualTo(1);72    }73    @Test74    public void can_return_based_on_strongly_types_one_parameter_function() throws Exception {75        given(iMethods.simpleMethod(anyString()))76                .will(answer(new Answer1<String, String>() {77                    public String answer(String s) {78                        return s;79                    }80                }));81        assertThat(iMethods.simpleMethod("string")).isEqualTo("string");82    }83    @Test84    public void will_execute_a_void_based_on_strongly_typed_one_parameter_function() throws Exception {85        final IMethods target = mock(IMethods.class);86        given(iMethods.simpleMethod(anyString()))87                .will(answerVoid(new VoidAnswer1<String>() {88                    public void answer(String s) {89                        target.simpleMethod(s);90                    }91                }));92        // invoke on iMethods93        iMethods.simpleMethod("string");94        // expect the answer to write correctly to "target"95        verify(target, times(1)).simpleMethod("string");96    }97    @Test98    public void can_return_based_on_strongly_typed_two_parameter_function() throws Exception {99        given(iMethods.simpleMethod(anyString(), anyInt()))100            .will(answer(new Answer2<String, String, Integer>() {101                public String answer(String s, Integer i) {102                    return s + "-" + i;103                }104            }));105        assertThat(iMethods.simpleMethod("string",1)).isEqualTo("string-1");106    }107    @Test108    public void will_execute_a_void_based_on_strongly_typed_two_parameter_function() throws Exception {109        final IMethods target = mock(IMethods.class);110        given(iMethods.simpleMethod(anyString(), anyInt()))111            .will(answerVoid(new VoidAnswer2<String, Integer>() {112                public void answer(String s, Integer i) {113                    target.simpleMethod(s, i);114                }115            }));116        // invoke on iMethods117        iMethods.simpleMethod("string",1);118        // expect the answer to write correctly to "target"119        verify(target, times(1)).simpleMethod("string", 1);120    }121    @Test122    public void can_return_based_on_strongly_typed_three_parameter_function() throws Exception {123        final IMethods target = mock(IMethods.class);124        given(iMethods.threeArgumentMethodWithStrings(anyInt(), anyString(), anyString()))125                .will(answer(new Answer3<String, Integer, String, String>() {126                    public String answer(Integer i, String s1, String s2) {127                        target.threeArgumentMethodWithStrings(i, s1, s2);128                        return "answered";129                    }130                }));131        assertThat(iMethods.threeArgumentMethodWithStrings(1, "string1", "string2")).isEqualTo("answered");132        verify(target, times(1)).threeArgumentMethodWithStrings(1, "string1", "string2");133    }134    @Test135    public void will_execute_a_void_based_on_strongly_typed_three_parameter_function() throws Exception {136        final IMethods target = mock(IMethods.class);137        given(iMethods.threeArgumentMethodWithStrings(anyInt(), anyString(), anyString()))138                .will(answerVoid(new VoidAnswer3<Integer, String, String>() {139                    public void answer(Integer i, String s1, String s2) {140                        target.threeArgumentMethodWithStrings(i, s1, s2);141                    }142                }));143        // invoke on iMethods144        iMethods.threeArgumentMethodWithStrings(1, "string1", "string2");145        // expect the answer to write correctly to "target"146        verify(target, times(1)).threeArgumentMethodWithStrings(1, "string1", "string2");147    }148    @Test149    public void can_return_based_on_strongly_typed_four_parameter_function() throws Exception {150        final IMethods target = mock(IMethods.class);151        given(iMethods.fourArgumentMethod(anyInt(), anyString(), anyString(), any(boolean[].class)))152                .will(answer(new Answer4<String, Integer, String, String, boolean[]>() {153                    public String answer(Integer i, String s1, String s2, boolean[] a) {154                        target.fourArgumentMethod(i, s1, s2, a);155                        return "answered";156                    }157                }));158        boolean[] booleanArray = { true, false };159        assertThat(iMethods.fourArgumentMethod(1, "string1", "string2", booleanArray)).isEqualTo("answered");160        verify(target, times(1)).fourArgumentMethod(1, "string1", "string2", booleanArray);161    }162    @Test163    public void will_execute_a_void_based_on_strongly_typed_four_parameter_function() throws Exception {164        final IMethods target = mock(IMethods.class);165        given(iMethods.fourArgumentMethod(anyInt(), anyString(), anyString(), any(boolean[].class)))166                .will(answerVoid(new VoidAnswer4<Integer, String, String, boolean[]>() {167                    public void answer(Integer i, String s1, String s2, boolean[] a) {168                        target.fourArgumentMethod(i, s1, s2, a);169                    }170                }));171        // invoke on iMethods172        boolean[] booleanArray = { true, false };173        iMethods.fourArgumentMethod(1, "string1", "string2", booleanArray);174        // expect the answer to write correctly to "target"175        verify(target, times(1)).fourArgumentMethod(1, "string1", "string2", booleanArray);176    }177    @Test178    public void can_return_based_on_strongly_typed_five_parameter_function() throws Exception {179        final IMethods target = mock(IMethods.class);180        given(iMethods.simpleMethod(anyString(), anyInt(), anyInt(), anyInt(), anyInt()))181                .will(answer(new Answer5<String, String, Integer, Integer, Integer, Integer>() {182                    public String answer(String s1, Integer i1, Integer i2, Integer i3, Integer i4) {183                        target.simpleMethod(s1, i1, i2, i3, i4);184                        return "answered";185                    }186                }));187        assertThat(iMethods.simpleMethod("hello", 1, 2, 3, 4)).isEqualTo("answered");188        verify(target, times(1)).simpleMethod("hello", 1, 2, 3, 4);189    }190    @Test191    public void will_execute_a_void_based_on_strongly_typed_five_parameter_function() throws Exception {192        final IMethods target = mock(IMethods.class);193        given(iMethods.simpleMethod(anyString(), anyInt(), anyInt(), anyInt(), anyInt()))194                .will(answerVoid(new VoidAnswer5<String, Integer, Integer, Integer, Integer>() {195                    public void  answer(String s1, Integer i1, Integer i2, Integer i3, Integer i4) {196                        target.simpleMethod(s1, i1, i2, i3, i4);197                    }198                }));199        // invoke on iMethods200        iMethods.simpleMethod("hello", 1, 2, 3, 4);201        // expect the answer to write correctly to "target"202        verify(target, times(1)).simpleMethod("hello", 1, 2, 3, 4);203    }204}...

answer

Using AI Code Generation

1    def collaborator = mock(Collaborator.class)2    when(collaborator.getUniqueId(anyInt()))3        .thenAnswer(invocation -> invocation.getArgument(0) * 42)4    println collaborator.getUniqueId(1)5    def collaborator = mock(Collaborator.class)6    when(collaborator.save(anyString()))7        .thenAnswer(invocation -> println "saved: " + invocation.getArgument(0))8    collaborator.save("my data")9    def collaborator = mock(Collaborator.class)10    when(collaborator.save(anyString()))11        .thenAnswer(invocation -> CompletableFuture.completedFuture(invocation.getArgument(0)))

answer

Using AI Code Generation

1import org.junit.Test;2import org.mockito.Mockito;3import java.util.List;4import static org.mockito.Mockito.*;5public class StubbingWithAdditionalAnswersTest {6    private List mock = mock(List.class);7    public void shouldAllowAdditionalAnswers() {8        when(mock.get(anyInt())).thenAnswer(new ReturnsElementAt(0));9        System.out.println(mock.get(0));10    }11    private static class ReturnsElementAt implements Answer<Object> {12        private final int index;13        private ReturnsElementAt(int index) {14            this.index = index;15        }16        public Object answer(InvocationOnMock invocation) throws Throwable {17            Object[] args = invocation.getArguments();18            return ((List)invocation.getMock()).get(index);19        }20    }21}22import org.junit.Test;23import org.mockito.Mockito;24import java.util.List;25import static org.mockito.Mockito.*;26public class StubbingWithAdditionalAnswersTest {27    private List mock = mock(List.class);28    public void shouldAllowAdditionalAnswers() {29        when(mock.get(anyInt())).thenAnswer(new ReturnsElementAt(0));30        System.out.println(mock.get(0));31    }32    private static class ReturnsElementAt implements Answer<Object> {33        private final int index;34        private ReturnsElementAt(int index) {35            this.index = index;36        }37        public Object answer(InvocationOnMock invocation) throws Throwable {38            Object[] args = invocation.getArguments();39            return ((List)invocation.getMock()).get(index);40        }41    }42}

answer

Using AI Code Generation

1import org.junit.Test;2import org.mockito.Mockito;3import org.mockito.invocation.InvocationOnMock;4import org.mockito.stubbing.Answer;5import static org.junit.Assert.assertEquals;6import static org.mockito.Mockito.*;7public class StubbingWithAdditionalAnswersTest {8    private static class Foo {9        public String bar(String s) {10            return s;11        }12    }13    private Foo foo = Mockito.mock(Foo.class);14    public void should_stub_with_answer() {15        when(foo.bar(anyString())).thenAnswer(new Answer<String>() {16            public String answer(InvocationOnMock invocation) throws Throwable {17                return "42";18            }19        });20        assertEquals("42", foo.bar("foo"));21    }22    public void should_stub_with_answer_using_lambda() {23        when(foo.bar(anyString())).thenAnswer(invocation -> "42");24        assertEquals("42", foo.bar("foo"));25    }26    public void should_stub_with_answer_using_lambda_and_method_reference() {27        when(foo.bar(anyString())).thenAnswer(Foo::bar);28        assertEquals("foo", foo.bar("foo"));29    }30}

answer

Using AI Code Generation

1@DisplayName("Test answer method")2void testAnswerMethod() {3    List mockedList = mock(List.class);4    when(mockedList.get(anyInt())).thenAnswer(invocation -> "hello world");5    assertEquals(mockedList.get(0), "hello world");6}

answer

Using AI Code Generation

1    public void shouldAllowAnswerToBeUsedToStubMethodWithVarargs() {2        List list = mock(List.class);3        when(list.addAll(anyVararg())).thenAnswer(new Answer() {4            public Object answer(InvocationOnMock invocation) {5                Object[] args = invocation.getArguments();6                Object mock = invocation.getMock();7                return "called with arguments: " + args;8            }9        });10        String result = list.addAll("one", "two", "three").toString();11        assertEquals("called with arguments: [one, two, three]", result);12    }13    public void shouldAllowAnswerToBeUsedToStubMethodWithVarargs2() {14        List list = mock(List.class);15        when(list.addAll(anyVararg())).thenAnswer(new Answer() {16            public Object answer(InvocationOnMock invocation) {17                Object[] args = invocation.getArguments();18                Object mock = invocation.getMock();19                return "called with arguments: " + args;20            }21        });22        String result = list.addAll("one", "two", "three").toString();23        assertEquals("called with arguments: [one, two, three]", result);24    }25    public void shouldAllowAnswerToBeUsedToStubMethodWithVarargs3() {26        List list = mock(List.class);27        when(list.addAll(anyVararg())).thenAnswer(new Answer() {28            public Object answer(InvocationOnMock invocation) {29                Object[] args = invocation.getArguments();30                Object mock = invocation.getMock();31                return "called with arguments: " + args;32            }33        });34        String result = list.addAll("one", "two", "three").toString();35        assertEquals("called with arguments: [one, two, three]", result);36    }37    public void shouldAllowAnswerToBeUsedToStubMethodWithVarargs4() {38        List list = mock(List.class);39        when(list.addAll(anyVararg())).thenAnswer(new Answer() {40            public Object answer(InvocationOnMock invocation) {41                Object[] args = invocation.getArguments();42                Object mock = invocation.getMock();43                return "called with arguments: " + args;44            }45        });46        String result = list.addAll("one", "two", "three").toString();47        assertEquals("called with arguments: [one, two, three]", result);48    }

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