TestMu Conference is Back! Future of Testing + AI LambdaTest G2 Announcement

How to use Foo class of org.mockitousage.debugging package

Best Mockito code snippet using org.mockitousage.debugging.Foo

Source:StrictJUnitRuleTest.java

1package org.mockitousage.junitrule;2import org.assertj.core.api.Assertions;3import org.junit.Rule;4import org.junit.Test;5import org.mockito.Mock;6import org.mockito.quality.Strictness;7import org.mockito.exceptions.misusing.PotentialStubbingProblem;8import org.mockito.exceptions.misusing.UnfinishedVerificationException;9import org.mockito.exceptions.misusing.UnnecessaryStubbingException;10import org.mockito.junit.MockitoJUnit;11import org.mockitousage.IMethods;12import org.mockitoutil.SafeJUnitRule;13import static org.junit.Assert.assertEquals;14import static org.mockito.BDDMockito.given;15import static org.mockito.BDDMockito.willReturn;16import static org.mockito.Mockito.*;17import static org.mockitoutil.TestBase.filterLineNo;18public class StrictJUnitRuleTest {19    @Rule public SafeJUnitRule rule = new SafeJUnitRule(MockitoJUnit.rule().strictness(Strictness.STRICT_STUBS));20    @Mock IMethods mock;21    @Mock IMethods mock2;22    @Test public void ok_when_no_stubbings() throws Throwable {23        mock.simpleMethod();24        verify(mock).simpleMethod();25    }26    @Test public void ok_when_all_stubbings_used() throws Throwable {27        given(mock.simpleMethod(10)).willReturn("foo");28        mock.simpleMethod(10);29    }30    @Test public void ok_when_used_and_mismatched_argument() throws Throwable {31        given(mock.simpleMethod(10)).willReturn("foo");32        mock.simpleMethod(10);33        mock.simpleMethod(15);34    }35    @Test public void fails_when_unused_stubbings() throws Throwable {36        //expect37        rule.expectFailure(UnnecessaryStubbingException.class);38        //when39        given(mock.simpleMethod(10)).willReturn("foo");40        mock2.simpleMethod(10);41    }42    @Test public void test_failure_trumps_unused_stubbings() throws Throwable {43        //expect44        rule.expectFailure(AssertionError.class, "x");45        //when46        given(mock.simpleMethod(10)).willReturn("foo");47        mock.otherMethod();48        throw new AssertionError("x");49    }50    @Test public void why_do_return_syntax_is_useful() throws Throwable {51        //Trade-off of Mockito strictness documented in test52        //expect53        rule.expectFailure(PotentialStubbingProblem.class);54        //when55        when(mock.simpleMethod(10)).thenReturn("10");56        when(mock.simpleMethod(20)).thenReturn("20");57    }58    @Test public void fails_fast_when_stubbing_invoked_with_different_argument() throws Throwable {59        //expect60        rule.expectFailure(new SafeJUnitRule.FailureAssert() {61            public void doAssert(Throwable t) {62                Assertions.assertThat(t).isInstanceOf(PotentialStubbingProblem.class);63                assertEquals(filterLineNo("\n" +64                    "Strict JUnit rule detected stubbing argument mismatch.\n" +65                    "This invocation of 'simpleMethod' method:\n" +66                    "  mock.simpleMethod(15);\n" +67                    "  -> at org.mockitousage.junitrule.StrictJUnitRuleTest.fails_fast_when_stubbing_invoked_with_different_argument(StrictJUnitRuleTest.java:0)\n" +68                    "Has following stubbing(s) with different arguments:\n" +69                    "  1. mock.simpleMethod(20);\n" +70                    "    -> at org.mockitousage.junitrule.StrictJUnitRuleTest.fails_fast_when_stubbing_invoked_with_different_argument(StrictJUnitRuleTest.java:0)\n" +71                    "  2. mock.simpleMethod(30);\n" +72                    "    -> at org.mockitousage.junitrule.StrictJUnitRuleTest.fails_fast_when_stubbing_invoked_with_different_argument(StrictJUnitRuleTest.java:0)\n" +73                    "Typically, stubbing argument mismatch indicates user mistake when writing tests.\n" +74                    "In order to streamline debugging tests Mockito fails early in this scenario.\n" +75                    "However, there are legit scenarios when this exception generates false negative signal:\n" +76                    "  - stubbing the same method multiple times using 'given().will()' or 'when().then()' API\n" +77                    "    Please use 'will().given()' or 'doReturn().when()' API for stubbing\n" +78                    "  - stubbed method is intentionally invoked with different arguments by code under test\n" +79                    "    Please use 'default' or 'silent' JUnit Rule.\n" +80                    "For more information see javadoc for PotentialStubbingProblem class."),81                        filterLineNo(t.getMessage()));82            }83        });84        //when stubbings in the test code:85        willReturn("10").given(mock).simpleMethod(10) ;  //used86        willReturn("20").given(mock).simpleMethod(20) ;  //unused87        willReturn("30").given(mock).simpleMethod(30) ;  //unused88        //then89        mock.otherMethod(); //ok, different method90        mock.simpleMethod(10); //ok, stubbed with this argument91        //invocation in the code under test uses different argument and should fail immediately92        //this helps with debugging and is essential for Mockito strictness93        mock.simpleMethod(15);94    }95    @Test public void verify_no_more_interactions_ignores_stubs() throws Throwable {96        //when stubbing in test:97        given(mock.simpleMethod(10)).willReturn("foo");98        //and code under test does:99        mock.simpleMethod(10); //implicitly verifies the stubbing100        mock.otherMethod();101        //and in test we:102        verify(mock).otherMethod();103        verifyNoMoreInteractions(mock);104    }105    @Test public void unused_stubs_with_multiple_mocks() throws Throwable {106        //expect107        rule.expectFailure(new SafeJUnitRule.FailureAssert() {108            public void doAssert(Throwable t) {109                assertEquals(filterLineNo("\n" +110                        "Unnecessary stubbings detected.\n" +111                        "Clean & maintainable test code requires zero unnecessary code.\n" +112                        "Following stubbings are unnecessary (click to navigate to relevant line of code):\n" +113                        "  1. -> at org.mockitousage.junitrule.StrictJUnitRuleTest.unused_stubs_with_multiple_mocks(StrictJUnitRuleTest.java:0)\n" +114                        "  2. -> at org.mockitousage.junitrule.StrictJUnitRuleTest.unused_stubs_with_multiple_mocks(StrictJUnitRuleTest.java:0)\n" +115                        "Please remove unnecessary stubbings or use 'silent' option. More info: javadoc for UnnecessaryStubbingException class."), filterLineNo(t.getMessage()));116            }117        });118        //when test has119        given(mock.simpleMethod(10)).willReturn("foo");120        given(mock2.simpleMethod(20)).willReturn("foo");121        given(mock.otherMethod()).willReturn("foo"); //used and should not be reported122        //and code has123        mock.otherMethod();124        mock2.booleanObjectReturningMethod();125    }126    @Test public void rule_validates_mockito_usage() throws Throwable {127        //expect128        rule.expectFailure(UnfinishedVerificationException.class);129        //when test contains unfinished verification130        verify(mock);131    }132}...

Source:PrintingInvocationsDetectsUnusedStubTest.java

...11import org.mockitoutil.TestBase;1213public class PrintingInvocationsDetectsUnusedStubTest extends TestBase {1415    @Mock Foo mock;16    @Mock Foo mockTwo;1718    @Test19    public void shouldDetectUnusedStubbingWhenPrinting() throws Exception {20        //given21        given(mock.giveMeSomeString("different arg")).willReturn("foo");22        mock.giveMeSomeString("arg");2324        //when25        String log = NewMockito.debug().printInvocations(mock, mockTwo);2627        //then28        assertContainsIgnoringCase("unused", log);29    }30}

Foo

Using AI Code Generation

1package org.mockitousage.debugging;2import org.mockito.Mockito;3import org.mockitousage.IMethods;4import org.mockitoutil.TestBase;5public class FooTest extends TestBase {6    public void testFoo() {7        IMethods mock = Mockito.mock(IMethods.class);

Foo

Using AI Code Generation

1import org.mockitousage.debugging.Foo;2public class 1 {3    public void bar() {4        Foo foo = new Foo();5        foo.doSomething();6    }7}8import org.mockito.debugging.Foo;9public class 2 {10    public void bar() {11        Foo foo = new Foo();12        foo.doSomething();13    }14}

Foo

Using AI Code Generation

1package org.mockitousage.debugging;2import org.mockito.Mock;3import org.mockito.MockitoAnnotations;4import org.mockitousage.IMethods;5import org.testng.annotations.BeforeMethod;6import org.testng.annotations.Test;7public class DebuggingTest {8    @Mock private IMethods mock;9    @BeforeMethod public void initMocks() {10        MockitoAnnotations.initMocks(this);11    }12    @Test public void shouldDoSomething() {13        mock.simpleMethod();14    }15}16package org.mockitousage.debugging;17import org.mockito.Mock;18import org.mockito.MockitoAnnotations;19import org.mockitousage.IMethods;20import org.testng.annotations.BeforeMethod;21import org.testng.annotations.Test;22public class DebuggingTest {23    @Mock private IMethods mock;24    @BeforeMethod public void initMocks() {25        MockitoAnnotations.initMocks(this);26    }27    @Test public void shouldDoSomething() {28        mock.simpleMethod();29    }30}31package org.mockitousage.debugging;32import org.mockito.Mock;33import org.mockito.MockitoAnnotations;34import org.mockitousage.IMethods;35import org.testng.annotations.BeforeMethod;36import org.testng.annotations.Test;37public class DebuggingTest {38    @Mock private IMethods mock;39    @BeforeMethod public void initMocks() {40        MockitoAnnotations.initMocks(this);41    }42    @Test public void shouldDoSomething() {43        mock.simpleMethod();44    }45}46package org.mockitousage.debugging;47import org.mockito.Mock;48import org.mockito.MockitoAnnotations;49import org.mockitousage.IMethods;50import org.testng.annotations.BeforeMethod;51import org.testng.annotations.Test;52public class DebuggingTest {53    @Mock private IMethods mock;54    @BeforeMethod public void initMocks() {55        MockitoAnnotations.initMocks(this);56    }57    @Test public void shouldDoSomething() {58        mock.simpleMethod();59    }60}61package org.mockitousage.debugging;62import org.mockito.Mock;63import org.mockito.MockitoAnnotations;64import org.mockitousage.IMethods;65import org.testng.annotations.BeforeMethod;66import org.testng.annotations.Test;

Foo

Using AI Code Generation

1package org.mockitousage.debugging;2import org.mockito.Mockito;3import org.mockitousage.debugging.Foo;4public class FooUser {5  public Foo getFoo() {6    return Mockito.mock(Foo.class);7  }8}9package org.mockito.debugging;10public class Foo {11}12        at org.mockitousage.debugging.FooUser.getFoo(FooUser.java:8)13        at org.mockitousage.debugging.FooUser.main(FooUser.java:12)14        at java.net.URLClassLoader$1.run(Unknown Source)15        at java.security.AccessController.doPrivileged(Native Method)16        at java.net.URLClassLoader.findClass(Unknown Source)17        at java.lang.ClassLoader.loadClass(Unknown Source)18        at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)19        at java.lang.ClassLoader.loadClass(Unknown Source)

Foo

Using AI Code Generation

1package org.mockitousage.debugging;2import org.mockito.Mockito;3import org.mockito.invocation.InvocationOnMock;4import org.mockito.stubbing.Answer;5public class Foo {6    public void doSomething() {7        System.out.println("doSomething");8    }9    public static void main(String[] args) {10        Foo foo = Mockito.mock(Foo.class);11        Mockito.doAnswer(new Answer() {12            public Object answer(InvocationOnMock invocation) throws Throwable {13                System.out.println("doSomething");14                return null;15            }16        }).when(foo).doSomething();17        foo.doSomething();18    }19}20package org.mockitousage.debugging;21import org.mockito.Mockito;22import org.mockito.invocation.InvocationOnMock;23import org.mockito.stubbing.Answer;24public class Foo {25    public void doSomething() {26        System.out.println("doSomething");27    }28    public static void main(String[] args) {29        Foo foo = Mockito.mock(Foo.class);30        Mockito.doAnswer(new Answer() {31            public Object answer(InvocationOnMock invocation) throws Throwable {32                System.out.println("doSomething");33                return null;34            }35        }).when(foo).doSomething();36        foo.doSomething();37    }38}39at org.junit.Assert.assertEquals(Assert.java:115)40at org.junit.Assert.assertEquals(Assert.java:144)41at org.mockitousage.debugging.FooTest.test(FooTest.java:16)

Foo

Using AI Code Generation

1package org.mockitousage.debugging;2import org.mockito.Mockito;3import org.mockito.exceptions.base.MockitoException;4public class Foo {5    public void bar() {6    }7}8package org.mockitousage.debugging;9import org.mockito.Mockito;10import org.mockito.exceptions.base.MockitoException;11public class Foo {12    public void bar() {13    }14}15package org.mockitousage.debugging;16import org.mockito.Mockito;17import org.mockito.exceptions.base.MockitoException;18public class Foo {19    public void bar() {20    }21}22package org.mockitousage.debugging;23import org.mockito.Mockito;24import org.mockito.exceptions.base.MockitoException;25public class Foo {26    public void bar() {27    }28}29package org.mockitousage.debugging;30import org.mockito.Mockito;31import org.mockito.exceptions.base.MockitoException;32public class Foo {33    public void bar() {34    }35}36package org.mockitousage.debugging;37import org.mockito.Mockito;38import org.mockito.exceptions.base.MockitoException;39public class Foo {40    public void bar() {41    }42}43package org.mockitousage.debugging;44import org.mockito.Mockito;45import org.mockito.exceptions.base.MockitoException;46public class Foo {47    public void bar() {48    }49}50package org.mockitousage.debugging;51import org.mockito.Mockito;52import org.mockito.exceptions.base.MockitoException;53public class Foo {54    public void bar() {55    }56}

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.