Test your AI Agents with the all-new Agent to Agent Testing Platform.Learn More
How to use MockitoExtension method of org.mockito.junit.jupiter.MockitoExtension class
Best Mockito code snippet using org.mockito.junit.jupiter.MockitoExtension.MockitoExtension
Source:MockitoAnnotatedObjectsShouldBeInitialized.java 
...21import org.mockito.Spy;22import org.mockito.junit.MockitoJUnit;23import org.mockito.junit.MockitoJUnitRunner;24import org.mockito.junit.MockitoRule;25import org.mockito.junit.jupiter.MockitoExtension;26import org.mockito.junit.jupiter.MockitoSettings;27import org.mockito.quality.Strictness;28public class MockitoAnnotatedObjectsShouldBeInitialized {29 class MixedNonCompliant {30 @Mock // Noncompliant {{Initialize mocks before using them.}}31 private Bar bar;32 @Spy // Issue is only reported on the first annotation33 private Baz baz;34 @InjectMocks // Issue is only reported on the first annotation35 private Foo fooUnderTest;36 @Test37 void someTest() {38 // test something ...39 }40 }41 @RunWith(EmptyRunner.class)42 public class RunWithBadParameter {43 @Mock // Compliant FN is a runner that does not initialize anything44 private Bar bar;45 }46 @RunWith(Runner.class)47 public class RunWithAbstractRunner {48 @Mock // Compliant FN is a runner that but not a concrete one49 private Bar bar;50 }51 @Nullable52 public class IrrelevantAnnotationOnClass {53 @Mock // Noncompliant54 private Bar bar;55 }56 @RunWith(MockitoJUnitRunner.class)57 public class JUnit4AnnotatedTest {58 @Mock // Compliant59 private Bar bar;60 }61 @ExtendWith(EmptyExtension.class)62 public class ExtendWithEmptyParameter {63 @Mock // Compliant FN is an extension that does not initialize anything64 private Bar bar;65 }66 @ExtendWith(Extension.class)67 public class ExtendWithAbstractExtension {68 @Mock // Compliant FN use the base interface69 private Bar bar;70 }71 @ExtendWith(MockitoExtension.class)72 public class JUnit5AnnotatedTest {73 @Mock // Compliant74 private Bar bar;75 }76 public class UntaggedRule {77 public MockitoRule rule = MockitoJUnit.rule();78 @Mock // Noncompliant {{Initialize mocks before using them.}}79 private Bar bar;80 }81 public class UninitializedRule {82 @Rule83 public MockitoRule rule;84 @Mock // Noncompliant {{Initialize mocks before using them.}}85 private Bar bar;86 }87 public class NullInitializedRule {88 @Rule89 public MockitoRule rule = null;90 @Mock // Noncompliant {{Initialize mocks before using them.}}91 private Bar bar;92 }93 public class PoorlyInitializedRule {94 @Rule95 public MockitoRule rule = FakeRule.returnNull();96 @Mock // Noncompliant {{Initialize mocks before using them.}}97 private Bar bar;98 }99 public class FakeRuleInitialization {100 @Rule101 public MockitoRule rule = FakeRule.rule();102 @Mock // Noncompliant {{Initialize mocks before using them.}}103 private Bar bar;104 }105 public class FooTest2 {106 @Rule107 public MockitoRule rule = MockitoJUnit.rule();108 @Mock // Compliant109 private Bar bar;110 }111 public class InheritedRuleProviderInitialization {112 @Rule113 public MockitoRule rule = InheritedRuleProvider.rule();114 @Mock // Compliant115 private Bar bar;116 }117 public class MockitoRuleWithTheStrictness {118 @Rule119 public MockitoRule mockitoRule = MockitoJUnit.rule().strictness(Strictness.STRICT_STUBS);120 @Mock // Compliant121 private Bar bar;122 @Test123 public void someTest() {124 // ...125 }126 }127 public class MockitoRuleWrongStaticMethod {128 @Rule129 public MockitoRule rule = foo();130 @Mock // Noncompliant {{Initialize mocks before using them.}}131 private Bar bar;132 private MockitoRule foo() { return null; }133 }134 public class UntaggedSetup {135 @Mock // Noncompliant {{Initialize mocks before using them.}}136 private Bar bar;137 void setUp() {138 MockitoAnnotations.initMocks(this);139 }140 }141 public class SetupWithoutInitMocks {142 @Mock // Noncompliant {{Initialize mocks before using them.}}143 private Bar bar;144 @BeforeEach145 void setUp() {146 System.out.println("No call to initMocks");147 }148 }149 public class EmptySetup {150 @Mock // Noncompliant {{Initialize mocks before using them.}}151 private Bar bar;152 @BeforeEach153 void setUp() {154 }155 }156 public class SetupJunit4 {157 @Mock // compliant158 private Bar bar;159 @Before160 void setUp() {161 MockitoAnnotations.initMocks(this);162 }163 }164 public class SetupJUnit5 {165 @Mock // Compliant166 private Bar bar;167 @BeforeEach168 void setUp() {169 MockitoAnnotations.openMocks(this);170 }171 }172 public class SetupMix {173 @Mock // Compliant174 private Bar bar;175 @BeforeEach176 void setUp() {177 MockitoAnnotations.initMocks(this);178 }179 }180 class SetupInBaseClass {181 @BeforeEach182 void baseSetUp() {183 MockitoAnnotations.initMocks(this);184 }185 }186 class MockInChild extends SetupInBaseClass {187 @Mock // Compliant188 private Bar bar;189 }190 class NoSetup {191 }192 class MockInGrandChild extends NoSetup {193 @Mock // Compliant FN Super classes are not explored194 private Bar bar;195 }196 @ExtendWith(MockitoExtension.class)197 public class Nesting {198 @org.junit.jupiter.api.Nested199 public class Nested {200 @Mock201 private Bar bar;202 }203 public class NestedAsWell {204 @Mock // Noncompliant205 private Bar bar;206 @org.junit.jupiter.api.Nested207 public class NestedFurther {208 @Mock209 private Bar bar;210 }211 }212 }213 @RunWith(MockitoJUnitRunner.class)214 public class NestingWithWrongAnnotation {215 @Nested216 public class NestedButNotAnnotated {217 @Mock // Noncompliant218 private Bar bar;219 }220 public class NestedAsWellButAnnotated {221 @Nested222 public class NestedFurther {223 @Mock // Noncompliant224 private Bar bar;225 }226 }227 }228 public class NestingButNotAnnotated {229 public class NestedButNotAnnotated {230 @Mock // Noncompliant231 private Bar bar;232 }233 @ExtendWith(MockitoExtension.class)234 public class NestedAsWellButAnnotated {235 @org.junit.jupiter.api.Nested236 public class NestedFurther {237 @Mock238 private Bar bar;239 }240 }241 }242 private class Bar {243 }244 private class Baz {245 }246 private class Foo {247 }248 private static class EmptyRunner extends org.junit.runner.Runner {249 @Override250 public Description getDescription() {251 return null;252 }253 @Override254 public void run(RunNotifier runNotifier) {255 }256 }257 private static class EmptyExtension implements Extension {258 }259 private static class InheritedRuleProvider extends MockitoJUnit {260 }261 private static class FakeRule {262 static MockitoRule rule() {263 return null;264 }265 static MockitoRule returnNull() {266 return null;267 }268 }269 // Meta annotations270 @ExtendWith(MockitoExtension.class)271 public @interface SetupItTest272 {273 }274 @SetupItTest275 class SetUpViaMetaAnnotation {276 @Captor277 private ArgumentCaptor<String> someCaptor; // Compliant, ExtendWith setup via meta annotation278 }279 @MockitoSettings280 class SetUpViaMockitoSettings {281 @Captor private ArgumentCaptor<String> someCaptor; // Compliant, MockitoSettings is a meta annotation containing @ExtendWith({MockitoExtension.class})282 }283 @LoopB284 public @interface LoopA285 {286 }287 @LoopC288 public @interface LoopB289 {290 }291 @LoopA292 public @interface LoopC293 {294 }295 @LoopA296 class LoopInAnnotation {297 @Captor private ArgumentCaptor<String> someCaptor; // Noncompliant298 }299 // Meta annotations300 public @interface UnRelatedAnnotation301 {302 }303 @UnRelatedAnnotation304 @ExtendWith(MockitoExtension.class)305 class WithUnrelatedAnnotation1 {306 @Captor private ArgumentCaptor<String> someCaptor; // Compliant307 }308 @ExtendWith(MockitoExtension.class)309 @UnRelatedAnnotation310 class WithUnrelatedAnnotation2 {311 @Captor private ArgumentCaptor<String> someCaptor; // Compliant312 }313}...
Source:MockitoExtension.java
...29 *30 * Example usage:31 *32 * <pre class="code"><code class="java">33 * <b>@ExtendWith(MockitoExtension.class)</b>34 * public class ExampleTest {35 *36 * @Mock37 * private List<Integer> list;38 *39 * @Test40 * public void shouldDoSomething() {41 * list.add(100);42 * }43 * }44 * </code></pre>45 *46 * If you would like to configure the used strictness for the test class, use {@link MockitoSettings}.47 *48 * <pre class="code"><code class="java">49 * <b>@MockitoSettings(strictness = Strictness.STRICT_STUBS)</b>50 * public class ExampleTest {51 *52 * @Mock53 * private List<Integer> list;54 *55 * @Test56 * public void shouldDoSomething() {57 * list.add(100);58 * }59 * }60 * </code></pre>61 *62 * This extension also supports JUnit Jupiter's method parameters.63 * Use parameters for initialization of mocks that you use only in that specific test method.64 * In other words, where you would initialize local mocks in JUnit 4 by calling {@link Mockito#mock(Class)},65 * use the method parameter. This is especially beneficial when initializing a mock with generics, as you no66 * longer get a warning about "Unchecked assignment".67 * Please refer to JUnit Jupiter's documentation to learn when method parameters are useful.68 *69 * <pre class="code"><code class="java">70 * <b>@ExtendWith(MockitoExtension.class)</b>71 * public class ExampleTest {72 *73 * @Mock74 * private List<Integer> sharedList;75 *76 * @Test77 * public void shouldDoSomething() {78 * sharedList.add(100);79 * }80 *81 * @Test82 * public void hasLocalMockInThisTest(@Mock List<Integer> localList) {83 * localList.add(100);84 * sharedList.add(100);85 * }86 * }87 * </code></pre>88 *89 * Lastly, the extension supports JUnit Jupiter's constructor parameters.90 * This allows you to do setup work in the constructor and set91 * your fields to <code>final</code>.92 * Please refer to JUnit Jupiter's documentation to learn when constructor parameters are useful.93 *94 * <pre class="code"><code class="java">95 * <b>@ExtendWith(MockitoExtension.class)</b>96 * public class ExampleTest {97 *98 * private final List<Integer> sharedList;99 *100 * ExampleTest(@Mock sharedList) {101 * this.sharedList = sharedList;102 * }103 *104 * @Test105 * public void shouldDoSomething() {106 * sharedList.add(100);107 * }108 * }109 * </code></pre>110 */111public class MockitoExtension implements TestInstancePostProcessor,BeforeEachCallback, AfterEachCallback, ParameterResolver {112 private final static Namespace MOCKITO = create("org.mockito");113 private final static String SESSION = "session";114 private final static String TEST_INSTANCE = "testInstance";115 private final Strictness strictness;116 // This constructor is invoked by JUnit Jupiter via reflection or ServiceLoader117 @SuppressWarnings("unused")118 public MockitoExtension() {119 this(Strictness.STRICT_STUBS);120 }121 private MockitoExtension(Strictness strictness) {122 this.strictness = strictness;123 }124 /**125 * <p>Callback for post-processing the supplied test instance.126 *127 * <p><strong>Note</strong>: the {@code ExtensionContext} supplied to a128 * {@code TestInstancePostProcessor} will always return an empty129 * {@link Optional} value from {@link ExtensionContext#getTestInstance()130 * getTestInstance()}. A {@code TestInstancePostProcessor} should therefore131 * only attempt to process the supplied {@code testInstance}.132 *133 * @param testInstance the instance to post-process; never {@code null}134 * @param context the current extension context; never {@code null}135 */...
Source:RestaurantTest.java
...4import org.junit.jupiter.api.Test;5import org.junit.jupiter.api.extension.ExtendWith;6import org.mockito.Mock;7import org.mockito.MockitoAnnotations;8import org.mockito.junit.jupiter.MockitoExtension;9import static org.junit.jupiter.api.Assertions.*;10@ExtendWith(MockitoExtension.class)11class RestaurantTest {12 @Mock13 Restaurant mock;14 @BeforeEach15 void setup() {16 MockitoAnnotations.initMocks(this);17 mock = new Restaurant();18 }19 @DisplayName("Pub - Sub 구ë
í
ì¤í¸")20 @Test21 void test_subscribe() {22 mock.subscribe();23 }24}...
MockitoExtension
Using AI Code Generation
1import org.junit.jupiter.api.Test;2import org.junit.jupiter.api.extension.ExtendWith;3import org.mockito.junit.jupiter.MockitoExtension;4import org.mockito.junit.jupiter.MockitoSettings;5import org.mockito.quality.Strictness;6@ExtendWith(MockitoExtension.class)7@MockitoSettings(strictness = Strictness.LENIENT)8public class MockitoExtensionTest {9 public void testMockitoExtension() {10 }11}
MockitoExtension
Using AI Code Generation
1import org.junit.jupiter.api.Test;2import org.junit.jupiter.api.extension.ExtendWith;3import org.mockito.Mock;4import org.mockito.junit.jupiter.MockitoExtension;5import static org.junit.jupiter.api.Assertions.assertEquals;6import static org.mockito.Mockito.when;7@ExtendWith(MockitoExtension.class)8public class MockitoExtensionTest {9 private MyService myService;10 public void testMockitoExtension() {11 when(myService.getName()).thenReturn("Mockito");12 assertEquals("Mockito", myService.getName());13 }14}
MockitoExtension
Using AI Code Generation
1import org.junit.jupiter.api.Test;2import org.junit.jupiter.api.extension.ExtendWith;3import org.mockito.junit.jupiter.MockitoExtension;4import static org.junit.jupiter.api.Assertions.assertEquals;5import static org.mockito.Mockito.mock;6import static org.mockito.Mockito.when;7@ExtendWith(MockitoExtension.class)8class 1Test {9 void testMock() {10 1 mock = mock(1.class);11 when(mock.getUniqueId()).thenReturn(43);12 assertEquals(mock.getUniqueId(), 43);13 }14}15at org.junit.jupiter.engine.execution.ExecutableInvoker.resolveParameter(ExecutableInvoker.java:200)16at org.junit.jupiter.engine.execution.ExecutableInvoker.resolveParameters(ExecutableInvoker.java:183)17at org.junit.jupiter.engine.execution.ExecutableInvoker.invoke(ExecutableInvoker.java:74)18at org.junit.jupiter.engine.descriptor.ClassBasedTestDescriptor.invokeTestClassConstructor(ClassBasedTestDescriptor.java:342)19at org.junit.jupiter.engine.descriptor.ClassBasedTestDescriptor.instantiateTestClass(ClassBasedTestDescriptor.java:289)20at org.junit.jupiter.engine.descriptor.ClassTestDescriptor.instantiateTestClass(ClassTestDescriptor.java:79)21at org.junit.jupiter.engine.descriptor.ClassBasedTestDescriptor.instantiateAndPostProcessTestInstance(ClassBasedTestDescriptor.java:267)22at org.junit.jupiter.engine.descriptor.ClassBasedTestDescriptor.lambda$testInstancesProvider$2(ClassBasedTestDescriptor.java:259)23at java.util.Optional.orElseGet(Optional.java:267)24at org.junit.jupiter.engine.descriptor.ClassBasedTestDescriptor.lambda$testInstancesProvider$3(ClassBasedTestDescriptor.java:258)25at org.junit.jupiter.engine.execution.TestInstancesProvider.getTestInstances(TestInstancesProvider.java:31)26at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.lambda$prepare$0(TestMethodTestDescriptor.java:101)27at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)28at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.prepare(TestMethodTestDescriptor.java:100)29at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.prepare(TestMethodTestDescriptor.java:65)30at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$prepare$1(NodeTestTask.java:111)31at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
MockitoExtension
Using AI Code Generation
1import org.junit.jupiter.api.Test;2import org.junit.jupiter.api.extension.ExtendWith;3import org.mockito.Mock;4import org.mockito.junit.jupiter.MockitoExtension;5import static org.junit.jupiter.api.Assertions.assertEquals;6import static org.mockito.Mockito.when;7@ExtendWith(MockitoExtension.class)8public class MockitoExtensionTest {9 private MyService myService;10 public void testMockitoExtension() {11 when(myService.getName()).thenReturn("Mockito");12 assertEquals("Mockito", myService.getName());13 }14}
MockitoExtension
Using AI Code Generation
1import org.junit.jupiter.api.Test;2import org.junit.jupiter.api.extension.ExtendWith;3import org.mockito.junit.jupiter.MockitoExtension;4import static org.junit.jupiter.api.Assertions.assertEquals;5import static org.mockito.Mockito.mock;6import static org.mockito.Mockito.when;7@ExtendWith(MockitoExtension.class)8class 1Test {9 void testMock() {10 1 mock = mock(1.class);11 when(mock.getUniqueId()).thenReturn(43);12 assertEquals(mock.getUniqueId(), 43);13 }14}15at org.junit.jupiter.engine.execution.ExecutableInvoker.resolveParameter(ExecutableInvoker.java:200)16at org.junit.jupiter.engine.execution.ExecutableInvoker.resolveParameters(ExecutableInvoker.java:183)17at org.junit.jupiter.engine.execution.ExecutableInvoker.invoke(ExecutableInvoker.java:74)18at org.junit.jupiter.engine.descriptor.ClassBasedTestDescriptor.invokeTestClassConstructor(ClassBasedTestDescriptor.java:342)19at org.junit.jupiter.engine.descriptor.ClassBasedTestDescriptor.instantiateTestClass(ClassBasedTestDescriptor.java:289)20at org.junit.jupiter.engine.descriptor.ClassTestDescriptor.instantiateTestClass(ClassTestDescriptor.java:79)21at org.junit.jupiter.engine.descriptor.ClassBasedTestDescriptor.instantiateAndPostProcessTestInstance(ClassBasedTestDescriptor.java:267)22at org.junit.jupiter.engine.descriptor.ClassBasedTestDescriptor.lambda$testInstancesProvider$2(ClassBasedTestDescriptor.java:259)23at java.util.Optional.orElseGet(Optional.java:267)24at org.junit.jupiter.engine.descriptor.ClassBasedTestDescriptor.lambda$testInstancesProvider$3(ClassBasedTestDescriptor.java:258)25at org.junit.jupiter.engine.execution.TestInstancesProvider.getTestInstances(TestInstancesProvider.java:31)26at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.lambda$prepare$0(TestMethodTestDescriptor.java:101)27at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)28at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.prepare(TestMethodTestDescriptor.java:100)29at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.prepare(TestMethodTestDescriptor.java:65)30at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$prepare$1(NodeTestTask.java:111)31at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
MockitoExtension
Using AI Code Generation
1package com.example;2import org.junit.jupiter.api.Test;3import org.junit.jupiter.api.extension.ExtendWith;4import org.mockito.InjectMocks;5import org.mockito.Mock;6import org.mockito.junit.jupiter.MockitoExtension;7import static org.junit.jupiter.api.Assertions.assertEquals;8import static org.mockito.Mockito.when;9@ExtendWith(MockitoExtension.class)10public class MockitoExtensionTest {11 private Dependency dependency;12 private SystemUnderTest systemUnderTest;13 void test() {14 when(dependency.giveData()).thenReturn(new int[] {1, 2, 3});15 assertEquals(6, systemUnderTest.methodUsingAnArrayListConstructor());16 }17}18package com.example;19import org.junit.jupiter.api.Test;20import org.junit.jupiter.api.extension.ExtendWith;21import org.mockito.InjectMocks;22import org.mockito.Mock;23import org.mockito.junit.jupiter.MockitoExtension;24import static org.junit.jupiter.api.Assertions.assertEquals;25import static org.mockito.Mockito.when;26@ExtendWith(MockitoExtension.class)27public class MockitoExtensionTest {28 private Dependency dependency;29 private SystemUnderTest systemUnderTest;30 void test() {31 when(dependency.giveData()).thenReturn(new int[] {1, 2, 3});32 assertEquals(6, systemUnderTest.methodUsingAnArrayListConstructor());33 }34}35package com.example;36import org.junit.jupiter.api.Test;37import org.junit.jupiter.api.extension.ExtendWith;38import org.mockito.InjectMocks;39import org.mockito.Mock;40import org.mockito.junit.jupiter.MockitoExtension;41import static org.junit.jupiter.api.Assertions.assertEquals;42import static org.mockito.Mockito.when;43@ExtendWith(MockitoExtension.class)44public class MockitoExtensionTest {45 private Dependency dependency;46 private SystemUnderTest systemUnderTest;47 void test() {48 when(dependency.giveData()).thenReturn(new int[] {1, 2, 3});49 assertEquals(6, systemUnderTest.methodUsingAnArrayListConstructor());50 }51}52package com.example;53import org.junit.jupiter.api.Test;54import org.junit.jupiter.api.extension.Ext
MockitoExtension
Using AI Code Generation
1@ExtendWith(MockitoExtension.class)2class MockitoExtensionTest {3 private List<String> mockList;4 void testMockCreation() {5 mockListadd("one");6 verify(mockList).add("one");7 assertEquals(, mockList.size());8 assertNotNull(mockList);9 }10}11@ExtendWith(MockitoExtension.class)12class MockitoExtensionTest {13 private List<String> spyList = new LinkedList<>();14 void testSpyCreation() {15 spyList.add("one");16 spyList.add("two");17 verify(spyList).add("one");18 verify(spyList).add("two");19 assertEquals(2, spyList.size());20 spyList.clear();21 assertEquals(0, spyList.size());22 }23}24@ExtendWith(MockitoExtension.class)25class MockitoExtensionTest {26 private ArgumentCaptor<String> argumentCaptor;27 private List<String> mockList;28 void testCaptorCreation() {29 mockList.add("one");30 verify(mockList).add(argumentCaptor.capture());31 assertEquals("one", argumentCaptor.getValue());32 }33}34@ExtendWith(MockitoExtension.class)35class MockitoExtensionTest {36 private List<String> mockList;37 private List<String> injectMocksList = new ArrayList<>();38 void testInjectMocksCreation() {39 injectMocksList.add("one");40 verify(mockList).add("one");41 }42}43@ExtendWith(MockitoExtension.class)44class MockitoExtensionTest {45 private List<String> mockList;
MockitoExtension
Using AI Code Generation
1@ExtendWith(MockitoExtension.class)2class MockitoExtensionTest {3 private List<String> mockList;4 void testMockCreation() {5 mockList.add("one");6 verify(mockList).add("one");7 assertEquals(0, mockList.size());8 assertNotNull(mockList);9 }10}11@ExtendWith(MockitoExtension.class)12class MockitoExtensionTest {13 private List<String> spyList = new LinkedList<>();14 void testSpyCreation() {15 spyList.add("one");16 spyList.add("two");17 verify(spyList).add("one");18 verify(spyList).add("two");19 assertEquals(2, spyList.size());20 spyList.clear();21 assertEquals(0, spyList.size());22 }23}24@ExtendWith(MockitoExtension.class)25class MockitoExtensionTest {26 private ArgumentCaptor<String> argumentCaptor;27 private List<String> mockList;28 void testCaptorCreation() {29 mockList.add("one");30 verify(mockList).add(argumentCaptor.capture());31 assertEquals("one", argumentCaptor.getValue());32 }33}34@ExtendWith(MockitoExtension.class)35class MockitoExtensionTest {36 private List<String> mockList;37 private List<String> injectMocksList = new ArrayList<>();38 void testInjectMocksCreation() {39 injectMocksList.add("one");40 verify(mockList).add("one");41 }42}43@ExtendWith(MockitoExtension.class)44class MockitoExtensionTest {45 private List<String> mockList;MockitoExtension method of org.mockito.junit.jupiter.MockitoExtension class46import org.junit.jupiter.api.Assertions;47import org.junit.jupiter.api.Test;48import org.junit.jupiter.api.extension.ExtendWith;49import org.mockito.InjectMocks;50import org.mockito.Mock;51import org.mockito.junit.jupiter.MockitoExtension;52import java.util.ArrayList;53import java.util.List;54@ExtendWith(MockitoExtension.class)55public class MockitoExtensionExample {56 List<String> mockList;57 ArrayList<String> arrayList;58 public void testMock() {59 mockList.add("Test");60 Assertions.assertEquals(0, arrayList.size());61 }62}63 at java.base/java.util.ArrayList.add(ArrayList.java:477)64 at java.base/java.util.ArrayList.add(ArrayList.java:490)65 at com.example.mockito.MockitoExtensionExample.testMock(MockitoExtensionExample.java:21)66import org.junit.jupiter.api.Assertions;67import org.junit.jupiter.api.Test;68import org.mockito.Mockito;69import java.util.ArrayList;70import java.util.List;71public class JUnit5AndMockito2_28_2 {72 public void testMock() {73 List<String> mockList = Mockito.mock(List.class);74 ArrayList<String> arrayList = new ArrayList<>();75 arrayList.add("Test");76 Assertions.assertEquals(1, arrayList.size());77 }78}79import org.junit.Assert;80import org.junit.Test;81import org.mockito.Mockito;82import java.util.ArrayList;83import java.util.List;84public class JUnit4AndMockito2_28_2 {85 public void testMock() {86 List<String> mockList = Mockito.mock(List.class);87 ArrayList<String> arrayList = new ArrayList<>();88 arrayList.add("Test");89 Assert.assertEquals(1, arrayList.size());90 }91}
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:
- JUnit Tutorial
- TestNG Tutorial
- Webdriver Tutorial
- WebDriverIO Tutorial
- Protractor Tutorial
- Selenium 4 Tutorial
- Jenkins Tutorial
- NUnit Tutorial
- Jest Tutorial
- Playwright Tutorial
- Cypress Tutorial
- PyTest Tutorial
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.
Most used method in MockitoExtension
Try LambdaTest Now !!
Get 100 minutes of automation test minutes FREE!!
Was this article helpful?
