KaneAI - World’s First E2E Software Testing Agent.Book a Demo Join TestMu Conference

How to use StrictJUnitRuleTest class of org.mockitousage.junitrule package

Best Mockito code snippet using org.mockitousage.junitrule.StrictJUnitRuleTest

Source:StrictJUnitRuleTest.java

...18import static org.mockito.BDDMockito.given;19import static org.mockito.BDDMockito.willReturn;20import static org.mockito.Mockito.*;21import static org.mockitoutil.TestBase.filterLineNo;22public class StrictJUnitRuleTest {23    @Rule public SafeJUnitRule rule = new SafeJUnitRule(MockitoJUnit.rule().strictness(Strictness.STRICT_STUBS));24    @Mock IMethods mock;25    @Mock IMethods mock2;26    @Test public void ok_when_no_stubbings() throws Throwable {27        mock.simpleMethod();28        verify(mock).simpleMethod();29    }30    @Test public void ok_when_all_stubbings_used() throws Throwable {31        given(mock.simpleMethod(10)).willReturn("foo");32        mock.simpleMethod(10);33    }34    @Test public void ok_when_used_and_mismatched_argument() throws Throwable {35        given(mock.simpleMethod(10)).willReturn("foo");36        mock.simpleMethod(10);37        mock.simpleMethod(15);38    }39    @Test public void fails_when_unused_stubbings() throws Throwable {40        //expect41        rule.expectFailure(UnnecessaryStubbingException.class);42        //when43        given(mock.simpleMethod(10)).willReturn("foo");44        mock2.simpleMethod(10);45    }46    @Test public void test_failure_trumps_unused_stubbings() throws Throwable {47        //expect48        rule.expectFailure(AssertionError.class, "x");49        //when50        given(mock.simpleMethod(10)).willReturn("foo");51        mock.otherMethod();52        throw new AssertionError("x");53    }54    @Test public void why_do_return_syntax_is_useful() throws Throwable {55        //Trade-off of Mockito strictness documented in test56        //expect57        rule.expectFailure(PotentialStubbingProblem.class);58        //when59        when(mock.simpleMethod(10)).thenReturn("10");60        when(mock.simpleMethod(20)).thenReturn("20");61    }62    @Test public void fails_fast_when_stubbing_invoked_with_different_argument() throws Throwable {63        //expect64        rule.expectFailure(new SafeJUnitRule.FailureAssert() {65            public void doAssert(Throwable t) {66                Assertions.assertThat(t).isInstanceOf(PotentialStubbingProblem.class);67                assertEquals(filterLineNo("\n" +68                                "Strict stubbing argument mismatch. Please check:\n" +69                                " - this invocation of 'simpleMethod' method:\n" +70                                "    mock.simpleMethod(15);\n" +71                                "    -> at org.mockitousage.junitrule.StrictJUnitRuleTest.fails_fast_when_stubbing_invoked_with_different_argument(StrictJUnitRuleTest.java:0)\n" +72                                " - has following stubbing(s) with different arguments:\n" +73                                "    1. mock.simpleMethod(20);\n" +74                                "      -> at org.mockitousage.junitrule.StrictJUnitRuleTest.fails_fast_when_stubbing_invoked_with_different_argument(StrictJUnitRuleTest.java:0)\n" +75                                "    2. mock.simpleMethod(30);\n" +76                                "      -> at org.mockitousage.junitrule.StrictJUnitRuleTest.fails_fast_when_stubbing_invoked_with_different_argument(StrictJUnitRuleTest.java:0)\n" +77                                "Typically, stubbing argument mismatch indicates user mistake when writing tests.\n" +78                                "Mockito fails early so that you can debug potential problem easily.\n" +79                                "However, there are legit scenarios when this exception generates false negative signal:\n" +80                                "  - stubbing the same method multiple times using 'given().will()' or 'when().then()' API\n" +81                                "    Please use 'will().given()' or 'doReturn().when()' API for stubbing.\n" +82                                "  - stubbed method is intentionally invoked with different arguments by code under test\n" +83                                "    Please use 'default' or 'silent' JUnit Rule.\n" +84                                "For more information see javadoc for PotentialStubbingProblem class."),85                        filterLineNo(t.getMessage()));86            }87        });88        //when stubbings in the test code:89        willReturn("10").given(mock).simpleMethod(10) ;  //used90        willReturn("20").given(mock).simpleMethod(20) ;  //unused91        willReturn("30").given(mock).simpleMethod(30) ;  //unused92        //then93        mock.otherMethod(); //ok, different method94        mock.simpleMethod(10); //ok, stubbed with this argument95        //invocation in the code under test uses different argument and should fail immediately96        //this helps with debugging and is essential for Mockito strictness97        mock.simpleMethod(15);98    }99    @Test public void verify_no_more_interactions_ignores_stubs() throws Throwable {100        //when stubbing in test:101        given(mock.simpleMethod(10)).willReturn("foo");102        //and code under test does:103        mock.simpleMethod(10); //implicitly verifies the stubbing104        mock.otherMethod();105        //and in test we:106        verify(mock).otherMethod();107        verifyNoMoreInteractions(mock);108    }109    @Test public void unused_stubs_with_multiple_mocks() throws Throwable {110        //expect111        rule.expectFailure(new SafeJUnitRule.FailureAssert() {112            public void doAssert(Throwable t) {113                assertEquals(filterLineNo("\n" +114                        "Unnecessary stubbings detected.\n" +115                        "Clean & maintainable test code requires zero unnecessary code.\n" +116                        "Following stubbings are unnecessary (click to navigate to relevant line of code):\n" +117                        "  1. -> at org.mockitousage.junitrule.StrictJUnitRuleTest.unused_stubs_with_multiple_mocks(StrictJUnitRuleTest.java:0)\n" +118                        "  2. -> at org.mockitousage.junitrule.StrictJUnitRuleTest.unused_stubs_with_multiple_mocks(StrictJUnitRuleTest.java:0)\n" +119                        "Please remove unnecessary stubbings or use 'silent' option. More info: javadoc for UnnecessaryStubbingException class."), filterLineNo(t.getMessage()));120            }121        });122        //when test has123        given(mock.simpleMethod(10)).willReturn("foo");124        given(mock2.simpleMethod(20)).willReturn("foo");125        given(mock.otherMethod()).willReturn("foo"); //used and should not be reported126        //and code has127        mock.otherMethod();128        mock2.booleanObjectReturningMethod();129    }130    @Test public void rule_validates_mockito_usage() throws Throwable {131        //expect132        rule.expectFailure(UnfinishedVerificationException.class);...

StrictJUnitRuleTest

Using AI Code Generation

1    @RunWith(MockitoJUnitRunner.class)2    public class StrictJUnitRuleTest {3        public MockitoRule mockitoRule = MockitoJUnit.rule().strictness(Strictness.STRICT_STUBS).build();4        private List list;5        public void should_stubbed_method_be_called() {6            when(list.get(0)).thenReturn("foo");7            list.get(0);8        }9        public void should_unstubbed_method_not_be_called() {10        }11    }12This file has been truncated. [show original](github.com/mockito/mockito/blo...)

StrictJUnitRuleTest

Using AI Code Generation

1package org.mockitousage.junitrule;2import static org.junit.Assert.*;3import static org.mockito.Mockito.*;4import org.junit.*;5import org.mockito.*;6import org.mockito.exceptions.base.MockitoException;7import org.mockito.junit.*;8import org.mockitousage.IMethods;9import org.mockitoutil.TestBase;10public class StrictJUnitRuleTest extends TestBase {11    @Mock IMethods mock;12    @Rule public MockitoRule rule = MockitoJUnit.rule().strictness(Strictness.STRICT_STUBS);13    public void shouldNotAllowUnstubbedMethod() throws Exception {14        try {15            mock.simpleMethod();16            fail();17        } catch (MockitoException e) {18            assertContains("Unstubbed method", e.getMessage());19        }20    }21    public void shouldNotAllowUnstubbedVoidMethod() throws Exception {22        try {23            mock.voidMethod();24            fail();25        } catch (MockitoException e) {26            assertContains("Unstubbed method", e.getMessage());27        }28    }29}30Project: mockito Source File: StrictJUnitRuleTest.java License: MIT License 5 votes public class StrictJUnitRuleTest extends TestBase { @Mock IMethods mock; @Rule public MockitoRule rule = MockitoJUnit.rule().strictness(Strictness.STRICT_STUBS); @Test public void shouldNotAllowUnstubbedMethod() throws Exception { try { mock.simpleMethod(); fail(); } catch (MockitoException e) { assertContains("Unstubbed method", e.getMessage()); } } @Test public void shouldNotAllowUnstubbedVoidMethod() throws Exception { try { mock.voidMethod(); fail(); } catch (MockitoException e) { assertContains("Unstubbed method", e.getMessage()); } } }31Project: mockito Source File: StrictJUnitRuleTest.java License: MIT License 5 votes public class StrictJUnitRuleTest extends TestBase { @Mock IMethods mock; @Rule public MockitoRule rule = MockitoJUnit.rule().strictness(Strictness.STRICT_STUBS); @Test public void shouldNotAllowUnstubbedMethod() throws Exception { try { mock.simpleMethod(); fail(); } catch (MockitoException e) { assertContains("Unstubbed method", e.getMessage()); } } @Test public void shouldNotAllowUnstubbedVoidMethod() throws Exception { try { mock.voidMethod(); fail(); } catch

StrictJUnitRuleTest

Using AI Code Generation

1package org.mockitousage.junitrule;2import org.junit.Rule;3import org.junit.Test;4import org.mockito.Mock;5import org.mockito.junit.MockitoJUnit;6import org.mockito.junit.StrictJUnitRuleTest;7public class UseStrictJUnitRuleTest {8    @Rule public StrictJUnitRuleTest rule = new StrictJUnitRuleTest(MockitoJUnit.rule());9    @Mock private Runnable runnable;10    public void shouldFailBecauseRunnableWasNotUsed() {11    }12}13@Rule public StrictJUnitRuleTest rule = new StrictJUnitRuleTest(MockitoJUnit.rule().strictness(Strictness.STRICT_STUBS));14@Rule public StrictJUnitRuleTest rule = new StrictJUnitRuleTest(MockitoJUnit.rule().strictness(Strictness.STRICT_STUBS).strictness(Strictness.STRICT_STUBS));15First, I'm not sure why I would want to use the StrictJUnitRuleTest class. The MockitoJUnit.rule() method returns a Mockito

StrictJUnitRuleTest

Using AI Code Generation

1public class StrictJUnitRuleTest {2    @Rule public StrictJUnitRule strictJUnitRule = new StrictJUnitRule();3    @Mock private List mock;4    @Test public void shouldFailBecauseOfUnwantedInteraction() {5        mock.add("one");6        mock.clear();7    }8}9Argument(s) are different! Wanted:10mock.clear();11-> at org.mockitousage.junitrule.StrictJUnitRuleTest.shouldFailBecauseOfUnwantedInteraction(StrictJUnitRuleTest.java:25)12mock.add("one");13-> at org.mockitousage.junitrule.StrictJUnitRuleTest.shouldFailBecauseOfUnwantedInteraction(StrictJUnitRuleTest.java:23)14package org.mockitousage.junitrule;15import org.junit.Rule;16import org.junit.Test;17import org.junit.runner.RunWith;18import org.mockito.Mock;19import org.mockito.junit.MockitoJUnitRunner;20import org.mockito.junit.StrictJUnit;21import org.mockito.junit.StrictJUnitRule;22import java.util.List;23@RunWith(MockitoJUnitRunner.Strict.class)24public class StrictJUnitRuleTest {25    @Rule public StrictJUnitRule strictJUnitRule = new StrictJUnitRule();26    @Mock private List mock;27    @Test public void shouldFailBecauseOfUnwantedInteraction() {28        mock.add("one");29        mock.clear();30    }31}

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.