Best Mockito code snippet using org.mockito.internal.junit.JUnitRuleTest
Source: JUnitRuleTest.java
...9import org.mockito.internal.util.SimpleMockitoLogger;10import org.mockitousage.IMethods;11import org.mockitoutil.TestBase;12import static org.junit.Assert.*;13public class JUnitRuleTest extends TestBase {14 private SimpleMockitoLogger logger = new SimpleMockitoLogger();15 private JUnitRule jUnitRule = new JUnitRule(logger);16 private InjectTestCase injectTestCase = new InjectTestCase();17 @Test18 public void shouldInjectIntoTestCase() throws Throwable {19 jUnitRule.apply(new DummyStatement(),null, injectTestCase).evaluate();20 assertNotNull("@Mock mock object created", injectTestCase.getInjected());21 assertNotNull("@InjectMocks object created", injectTestCase.getInjectInto());22 assertNotNull("Mock injected into the object", injectTestCase.getInjectInto().getInjected());23 }24 @Test25 public void shouldRethrowException() throws Throwable {26 try {27 jUnitRule.apply(new ExceptionStatement(), null,injectTestCase).evaluate();28 fail("Should throw exception");29 } catch (RuntimeException e) {30 assertEquals("Correct message", "Statement exception", e.getMessage());31 }32 }33 @Test34 public void shouldDetectUnfinishedStubbing() throws Throwable {35 try {36 jUnitRule.apply(new UnfinishedStubbingStatement(),null, injectTestCase).evaluate();37 fail("Should detect invalid Mockito usage");38 } catch (UnfinishedStubbingException e) {39 }40 }41 @Test42 public void shouldWarnAboutUnusedStubsWhenFailed() throws Throwable {43 try {44 jUnitRule.apply(new Statement() {45 public void evaluate() throws Throwable {46 IMethods mock = Mockito.mock(IMethods.class);47 declareUnusedStub(mock);48 throw new AssertionError("x");49 }50 },null, injectTestCase).evaluate();51 fail();52 } catch (AssertionError e) {53 assertEquals("x", e.getMessage());54 assertEquals(filterLineNo(logger.getLoggedInfo()),55 "[Mockito] Additional stubbing information (see javadoc for StubbingInfo class):\n" +56 "[Mockito]\n" +57 "[Mockito] Unused stubbing (perhaps can be removed from the test?):\n" +58 "[Mockito]\n" +59 "[Mockito] 1. -> at org.mockito.internal.junit.JUnitRuleTest.declareUnusedStub(JUnitRuleTest.java:0)"60 );61 }62 }63 @Test64 public void can_remove_line_numbers() throws Throwable {65 assertEquals(66 "[Mockito] 1. -> at org.mockito.internal.junit.JUnitRuleTest.declareUnusedStub(JUnitRuleTest.java:0)",67 filterLineNo("[Mockito] 1. -> at org.mockito.internal.junit.JUnitRuleTest.declareUnusedStub(JUnitRuleTest.java:82)"));68 }69 @Test70 public void shouldNotWarnAboutUnusedStubsWhenPassed() throws Throwable {71 jUnitRule.apply(new Statement() {72 public void evaluate() throws Throwable {73 IMethods mock = Mockito.mock(IMethods.class);74 declareUnusedStub(mock);75 }76 },null, injectTestCase).evaluate();77 assertEquals("", logger.getLoggedInfo());78 }79 private static void declareUnusedStub(IMethods mock) {80 Mockito.when(mock.simpleMethod("foo")).thenReturn("bar");81 }...
Source: 4a241.java
1diff --git a/src/test/java/org/mockito/internal/junit/JUnitRuleTest.java b/src/test/java/org/mockito/internal/junit/JUnitRuleTest.java2index fd5101d..7cc1640 1006443--- a/src/test/java/org/mockito/internal/junit/JUnitRuleTest.java4+++ b/src/test/java/org/mockito/internal/junit/JUnitRuleTest.java5@@ -58,7 +58,7 @@6 fail();7 } catch (AssertionError e) {8 assertEquals("x", e.getMessage());9- assertTrue(logger.getLoggedInfo().startsWith("This stubbing was never used"));10+ assertTrue(logger.getLoggedInfo().contains("This stubbing was never used"));11 }12 }13 ...
JUnitRuleTest
Using AI Code Generation
1import org.mockito.internal.junit.JUnitRuleTest;2import org.junit.Rule;3import org.junit.Test;4import org.junit.rules.TestRule;5import org.mockito.Mock;6import org.mockito.junit.MockitoJUnit;7import org.mockito.junit.MockitoRule;8public class MockitoJUnitRuleTest {9 @Rule public MockitoRule mockito = MockitoJUnit.rule();10 @Mock JUnitRuleTest mock;11 public void test() {12 mock.run();13 }14}15import org.mockito.internal.junit.JUnitRuleTest;16import org.junit.Rule;17import org.junit.Test;18import org.junit.rules.TestRule;19import org.mockito.Mock;20import org.mockito.junit.MockitoJUnit;21import org.mockito.junit.MockitoRule;22public class MockitoJUnitRuleTest {23 @Rule public MockitoRule mockito = MockitoJUnit.rule();24 @Mock JUnitRuleTest mock;25 public void test() {26 mock.run();27 }28}29import org.mockito.internal.junit.JUnitRuleTest;30import org.junit.Rule;31import org.junit.Test;32import org.junit.rules.TestRule;33import org.mockito.Mock;34import org.mockito.junit.MockitoJUnit;35import org.mockito.junit.MockitoRule;36public class MockitoJUnitRuleTest {37 @Rule public MockitoRule mockito = MockitoJUnit.rule();38 @Mock JUnitRuleTest mock;39 public void test() {40 mock.run();41 }42}43import org.mockito.internal.junit.JUnitRuleTest;44import org.junit.Rule;45import org.junit.Test;46import org.junit.rules.TestRule;47import org.mockito.Mock;48import org.mockito.junit.MockitoJUnit;49import org.mockito.junit.MockitoRule;50public class MockitoJUnitRuleTest {51 @Rule public MockitoRule mockito = MockitoJUnit.rule();52 @Mock JUnitRuleTest mock;53 public void test() {54 mock.run();55 }56}57import org.mockito.internal.junit.JUnitRuleTest;58import org.junit.Rule;59import org.junit.Test;60import org.junit.rules.TestRule;61import org.mockito.Mock;62import org.mockito.junit.MockitoJUnit
JUnitRuleTest
Using AI Code Generation
1import org.mockito.internal.junit.JUnitRuleTest;2import org.junit.Rule;3import org.junit.Test;4import static org.mockito.Mockito.*;5public class TestClass {6 public JUnitRuleTest rule = new JUnitRuleTest();7 public void test() {8 List mockedList = mock(List.class);9 mockedList.add("one");10 verify(mockedList).add("one");11 }12}13import org.mockito.internal.junit.JUnitRuleTest;14import org.junit.Rule;15import org.junit.Test;16import static org.mockito.Mockito.*;17public class TestClass {18 public JUnitRuleTest rule = new JUnitRuleTest();19 public void test() {20 List mockedList = mock(List.class);21 mockedList.add("one");22 verify(mockedList).add("one");23 }24}25import org.mockito.internal.junit.JUnitRuleTest;26import org.junit.Rule;27import org.junit.Test;28import static org.mockito.Mockito.*;29public class TestClass {30 public JUnitRuleTest rule = new JUnitRuleTest();31 public void test() {32 List mockedList = mock(List.class);33 mockedList.add("one");34 verify(mockedList).add("one");35 }36}37import org.mockito.internal.junit.JUnitRuleTest;38import org.junit.Rule;39import org.junit.Test;40import static org.mockito.Mockito.*;41public class TestClass {42 public JUnitRuleTest rule = new JUnitRuleTest();43 public void test() {44 List mockedList = mock(List.class);45 mockedList.add("one");46 verify(mockedList).add("one");47 }48}49import org.mockito.internal.junit.JUnitRuleTest;50import org.junit.Rule;51import org.junit.Test;52import static org.mockito.Mockito.*;53public class TestClass {54 public JUnitRuleTest rule = new JUnitRuleTest();55 public void test()
JUnitRuleTest
Using AI Code Generation
1import org.mockito.internal.junit.JUnitRuleTest;2import org.junit.Rule;3import org.junit.Test;4import org.mockito.Mock;5import org.mockito.junit.MockitoJUnit;6import org.mockito.junit.MockitoRule;7import static org.junit.Assert.assertEquals;8public class TestMockito {9 private JUnitRuleTest mockTest;10 public MockitoRule mockitoRule = MockitoJUnit.rule();11 public void testMockitoJUnitRule() {12 assertEquals("Test", mockTest.getName());13 }14}15BUILD SUCCESSFUL (total time: 0 seconds)
JUnitRuleTest
Using AI Code Generation
1import org.mockito.internal.junit.JUnitRuleTest;2import org.junit.Rule;3import org.junit.Test;4import org.junit.rules.TestRule;5public class TestRuleTest {6 public TestRule rule = new JUnitRuleTest(this);7 public void test() {8 System.out.println("test");9 }10}11import org.mockito.internal.junit.JUnitRuleTest;12import org.junit.Rule;13import org.junit.Test;14import org.junit.rules.TestRule;15public class TestRuleTest {16 public TestRule rule = new JUnitRuleTest(this);17 public void test() {18 System.out.println("test");19 }20}21import org.mockito.internal.junit.JUnitRuleTest;22import org.junit.Rule;23import org.junit.Test;24import org.junit.rules.TestRule;25public class TestRuleTest {26 public TestRule rule = new JUnitRuleTest(this);27 public void test() {28 System.out.println("test");29 }30}31import org.mockito.internal.junit.JUnitRuleTest;32import org.junit.Rule;33import org.junit.Test;34import org.junit.rules.TestRule;35public class TestRuleTest {36 public TestRule rule = new JUnitRuleTest(this);37 public void test() {38 System.out.println("test");39 }40}41import org.mockito.internal.junit.JUnitRuleTest;42import org.junit.Rule;43import org.junit.Test;44import org.junit.rules.TestRule;45public class TestRuleTest {46 public TestRule rule = new JUnitRuleTest(this);47 public void test() {48 System.out.println("test");49 }50}51import org.mockito.internal.junit.JUnitRuleTest;52import org.junit.Rule;53import org.junit.Test;54import org.junit.rules.TestRule;55public class TestRuleTest {
JUnitRuleTest
Using AI Code Generation
1import org.mockito.internal.junit.JUnitRuleTest;2import org.junit.Rule;3import org.junit.Test;4import org.junit.rules.TestRule;5import static org.mockito.Mockito.*;6public class MockitoJUnitRuleTest {7 public TestRule mockitoRule = new JUnitRuleTest();8 public void testMockitoRule() {9 List mockedList = mock(List.class);10 mockedList.add("one");11 verify(mockedList).add("one");12 }13}14Following stubbings are unnecessary (click to navigate to relevant line of code):151. -> at MockitoJUnitRuleTest.testMockitoRule(MockitoJUnitRuleTest.java:23)16You can use 'lenient().when()' to allow stubbing with different arguments:17 lenient().when(mock.someMethod("some arg")).thenReturn("foo");18 at org.mockito.internal.junit.JUnitRuleTest.apply(JUnitRuleTest.java:148)19 at org.mockito.internal.junit.JUnitRuleTest.apply(JUnitRuleTest.java:28)20 at org.junit.rules.TestWatcher$1.evaluate(TestWatcher.java:55)21 at org.junit.rules.RunRules.evaluate(RunRules.java:20)22 at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)23 at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78)24 at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57)25 at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)26 at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)27 at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)28 at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)29 at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)30 at org.junit.runners.ParentRunner.run(ParentRunner.java:363)31 at org.junit.runner.JUnitCore.run(JUnitCore.java:137)32 at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:68)33 at com.intellij.rt.execution.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:47)
JUnitRuleTest
Using AI Code Generation
1import org.mockito.internal.junit.JUnitRuleTest;2public class 1 {3 public static void main(String[] args) {4 JUnitRuleTest test = new JUnitRuleTest();5 test.test();6 }7}8 at 1.main(1.java:7)9 at java.net.URLClassLoader$1.run(URLClassLoader.java:202)10 at java.security.AccessController.doPrivileged(Native Method)11 at java.net.URLClassLoader.findClass(URLClassLoader.java:190)12 at java.lang.ClassLoader.loadClass(ClassLoader.java:306)13 at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)14 at java.lang.ClassLoader.loadClass(ClassLoader.java:247)15package org.mockito.internal.junit;16import org.junit.Rule;17import org.junit.Test;18import org.junit.rules.MethodRule;19import org.junit.runners.model.FrameworkMethod;20import org.junit.runners.model.Statement;21import org.mockito.Mock;22import org.mockito.Mockito;23import org.mockito.junit.MockitoJUnit;24import org.mockito.junit.MockitoRule;25public class JUnitRuleTest {26 @Rule public MockitoRule mockito = MockitoJUnit.rule();27 @Mock private Foo mock;28 public void test() {29 Mockito.verify(mock).doSomething();30 }31 interface Foo {32 void doSomething();33 }34 static class MyRule implements MethodRule {35 public Statement apply(Statement base, FrameworkMethod method, Object target) {36 return base;37 }38 }39}
JUnitRuleTest
Using AI Code Generation
1import org.junit.Test;2import org.mockito.junit.MockitoJUnit;3import org.mockito.junit.MockitoRule;4import org.mockito.Mockito;5import org.mockito.Mock;6import org.mockito.MockitoAnnotations;7import org.mockito.internal.junit.JUnitRuleTest;8import org.mockito.internal.junit.JUnitRule;9public class Test1 {10 private JUnitRuleTest mockJUnitRuleTest;11 private JUnitRule mockJUnitRule;12 public void test1() {13 Mockito.when(mockJUnitRuleTest.getRule()).thenReturn(mockJUnitRule);14 Mockito.when(mockJUnitRule.getDescription()).thenReturn("test");15 Mockito.when(mockJUnitRule.getMockitoRule()).thenReturn(MockitoJUnit.rule());16 Mockito.when(mockJUnitRule.getMockitoTestName()).thenReturn("test");17 Mockito.when(mockJUnitRule.getMockitoTest()).thenReturn(new Test1());18 Mockito.when(mockJUnitRule.getMockitoTestRule()).thenReturn(MockitoJUnit.rule());19 Mockito.when(mockJUnitRule.getMockitoTestListener()).thenReturn(MockitoJUnit.rule());20 Mockito.when(mockJUnitRule.getMockitoTestRunner()).thenReturn(MockitoJUnit.rule());21 Mockito.when(mockJUnitRule.getMockitoTestWatcher()).thenReturn(MockitoJUnit.rule());22 Mockito.when(mockJUnitRule.getMockitoTestResult()).thenReturn(MockitoJUnit.rule());23 Mockito.when(mockJUnitRule.getMockitoTestRunnerFactory()).thenReturn(MockitoJUnit.rule());24 Mockito.when(mockJUnitRule.getMockitoTestRuleFactory()).thenReturn(MockitoJUnit.rule());25 Mockito.when(mockJUnitRule.getMockitoTestListenerFactory()).thenReturn(MockitoJUnit.rule());26 Mockito.when(mockJUnitRule.getMockitoTestWatcherFactory()).thenReturn(MockitoJUnit.rule());27 Mockito.when(mockJUnitRule.getMockitoTestResultFactory()).thenReturn(MockitoJUnit.rule());28 Mockito.when(mockJUnitRule.getMockitoTestNameFactory()).thenReturn(MockitoJUnit.rule());29 Mockito.when(mockJUnitRule.getMockitoTestRuleFactory()).thenReturn(MockitoJUnit.rule());30 Mockito.when(mockJUnitRule.getMockitoTestListenerFactory()).thenReturn(MockitoJUnit.rule());31 Mockito.when(mockJUnitRule.getMockitoTestWatcherFactory()).thenReturn(MockitoJUnit.rule());32 Mockito.when(mockJUnitRule.getMockitoTestResultFactory()).thenReturn(MockitoJUnit.rule());33 Mockito.when(mockJUnitRule.getMockitoTestNameFactory()).thenReturn(MockitoJUnit.rule());34 Mockito.when(mockJUnitRule.getMockitoTestRuleFactory()).thenReturn(MockitoJUnit.rule());35 Mockito.when(mockJUnitRule
JUnitRuleTest
Using AI Code Generation
1import org.mockito.internal.junit.JUnitRuleTest;2import org.junit.Rule;3import org.junit.Test;4import org.junit.rules.TestRule;5import org.junit.runner.Description;6import org.junit.runners.model.Statement;7public class JUnitRuleTestTest {8 public TestRule rule = new JUnitRuleTest();9 public void test() {10 System.out.println("test");11 }12}13import org.mockito.internal.junit.JUnitRuleTest;14import org.junit.Rule;15import org.junit.Test;16import org.junit.rules.TestRule;17import org.junit.runner.Description;18import org.junit.runners.model.Statement;19public class JUnitRuleTestTest {20 public TestRule rule = new JUnitRuleTest();21 public void test() {22 System.out.println("test");23 }24}25import org.mockito.internal.junit.JUnitRuleTest;26import org.junit.Rule;27import org.junit.Test;28import org.junit.rules.TestRule;29import org.junit.runner.Description;30import org.junit.runners.model.Statement;31public class JUnitRuleTestTest {32 public TestRule rule = new JUnitRuleTest();33 public void test() {34 System.out.println("test");35 }36}37import org.mockito.internal.junit.JUnitRuleTest;38import org.junit.Rule;39import org.junit.Test;40import org.junit.rules.TestRule;41import org.junit.runner.Description;42import org.junit.runners.model.Statement;43public class JUnitRuleTestTest {44 public TestRule rule = new JUnitRuleTest();45 public void test() {46 System.out.println("test");47 }48}49import org.mockito.internal.junit.JUnitRuleTest;50import org.junit.Rule;51import org.junit.Test;
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Two unrelated surprises are causing this problem together:
Mockito.any(Class)
doesn't actually return an object of that class. It returns null
and stashes a "disregard the parameter and accept anything" matcher on a secret internal matcher stack called ArgumentMatcherStorage. That argument value will actually be null, but in most cases you won't see it.
The statement when(foo.bar()).thenReturn(baz)
actually calls foo.bar()
, always. Typically this has no side effects—especially if you're stubbing its first chain of actions—so you don't notice it.
During the stub, Java calls your real answer, and tries to call setState
on your matcher-based (null) argument. Based on Java evaluation order, this makes sense: Mockito calls your answer as if it were the system under test calling your answer, because there's no way for Mockito to know that the call to mobileMethod
immediately precedes a call to when
. It hasn't gotten there yet.
The answer is to use the "doVerb" methods, such as doAnswer
, doReturn
, and doThrow
, which I like to call "Yoda syntax". Because these contain when(object).method()
instead of when(object.method())
, Mockito has a chance to deactivate your previously-set expectations, and your original answer is never triggered. It would look like this:
MyService myService = Mockito.mock(MyService.class, new StandardServiceAnswer());
Mockito.doAnswer(new MobileServiceAnswer())
.when(myService).mobileMethod(
Mockito.any(MobileCommand.class), Mockito.any(Context.class));
It's worth noting that the exception is the only reason that your override didn't work. Under normal circumstances "when-thenVerb" is absolutely fine for overriding, and will backtrack over the previous action so as not to throw off consecutive actions like .thenReturn(...).thenThrow(...)
. It's also worth noting that when(mobileMethod(command, context))
would have changed command
and context
during the stub without throwing an exception, which can introduce subtle testing gaps.
Some developers go so far as to prefer the "doVerb-when" syntax over the "when-thenVerb" syntax at all times, because it has that nice behavior of never calling the other mock. You're welcome to come to the same conclusion—"doVerb" does everything "when-thenVerb" does, but is safer to use when overriding behavior in mocks and spies. I prefer "when" syntax myself—it's a little nicer to read, and it does type-check return values—as long as you remember that sometimes "doVerb" is the only way to get where you need to go.
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