How to use collector method of org.mockito.junit.MockitoJUnit class

Best Mockito code snippet using org.mockito.junit.MockitoJUnit.collector

Source:VerificationCollectorImplTest.java

...16import static org.mockito.Mockito.*;17public class VerificationCollectorImplTest {18    @Test19    public void should_not_throw_any_exceptions_when_verifications_are_successful() {20        VerificationCollector collector = MockitoJUnit.collector().assertLazily();21        IMethods methods = mock(IMethods.class);22        methods.simpleMethod();23        verify(methods).simpleMethod();24        collector.collectAndReport();25    }26    @Test(expected = MockitoAssertionError.class)27    public void should_collect_verification_failures() {28        VerificationCollector collector = MockitoJUnit.collector().assertLazily();29        IMethods methods = mock(IMethods.class);30        verify(methods).simpleMethod();31        collector.collectAndReport();32    }33    @Test34    public void should_collect_multiple_verification_failures() {35        VerificationCollector collector = MockitoJUnit.collector().assertLazily();36        IMethods methods = mock(IMethods.class);37        verify(methods).simpleMethod();38        verify(methods).byteReturningMethod();39        try {40            collector.collectAndReport();41            fail();42        } catch (MockitoAssertionError error) {43            assertThat(error).hasMessageContaining("1. Wanted but not invoked:");44            assertThat(error).hasMessageContaining("2. Wanted but not invoked:");45        }46    }47    @Test48    public void should_only_collect_failures_ignore_successful_verifications() {49        VerificationCollector collector = MockitoJUnit.collector().assertLazily();50        IMethods methods = mock(IMethods.class);51        verify(methods, never()).simpleMethod();52        verify(methods).byteReturningMethod();53        this.assertAtLeastOneFailure(collector);54    }55    @Test56    public void should_continue_collecting_after_failing_verification() {57        VerificationCollector collector = MockitoJUnit.collector().assertLazily();58        IMethods methods = mock(IMethods.class);59        methods.simpleMethod();60        verify(methods).byteReturningMethod();61        verify(methods).simpleMethod();62        this.assertAtLeastOneFailure(collector);63    }64    private void assertAtLeastOneFailure(VerificationCollector collector) {65        try {66            collector.collectAndReport();67            fail();68        } catch (MockitoAssertionError error) {69            assertThat(error).hasMessageContaining("1. Wanted but not invoked:");70            assertThat(error.getMessage()).doesNotContain("2.");71        }72    }73    @Test74    public void should_invoke_collector_rule_after_test() {75        JUnitCore runner = new JUnitCore();76        Result result = runner.run(VerificationCollectorRuleInner.class);77        assertThat(result.getFailureCount()).isEqualTo(1);78        assertThat(result.getFailures().get(0).getMessage()).contains("1. Wanted but not invoked:");79    }80    // This class is picked up when running a test suite using an IDE. It fails on purpose.81    public static class VerificationCollectorRuleInner {82        @Rule83        public VerificationCollector collector = MockitoJUnit.collector();84        @Test85        public void should_fail() {86            IMethods methods = mock(IMethods.class);87            verify(methods).simpleMethod();88        }89        @Test90        public void should_not_fail() {91            IMethods methods = mock(IMethods.class);92            methods.simpleMethod();93            verify(methods).simpleMethod();94        }95    }96}...

Source:VerificationCollector.java

...18 * collect verification failures.19 *20 * <pre class="code"><code class="java">21 *   &#064;Rule22 *   public VerificationCollector collector = MockitoJUnit.collector();23 *24 *   &#064;Test25 *   public void should_fail() {26 *       IMethods methods = mock(IMethods.class);27 *28 *       verify(methods).byteReturningMethod();29 *       verify(methods).simpleMethod();30 *   }31 * </code></pre>32 *33 * @see org.mockito.Mockito#verify(Object)34 * @see org.mockito.Mockito#verify(Object, org.mockito.verification.VerificationMode)35 * @since 2.1.036 */37public interface VerificationCollector extends TestRule {38    /**39     * Collect all lazily verified behaviour. If there were failed verifications, it will40     * throw a MockitoAssertionError containing all messages indicating the failed verifications.41     * <p>42     * Normally, users don't need to call this method because it is automatically invoked when test finishes43     * (part of the JUnit Rule behavior).44     * However, in some circumstances and edge cases, it might be useful to collect and report verification45     * errors in the middle of the test (for example: some scenario tests or during debugging).46     *47     * <pre class="code"><code class="java">48     *   &#064;Rule49     *   public VerificationCollector collector = MockitoJUnit.collector();50     *51     *   &#064;Test52     *   public void should_fail() {53     *       IMethods methods = mock(IMethods.class);54     *55     *       verify(methods).byteReturningMethod();56     *       verify(methods).simpleMethod();57     *58     *       //report all verification errors now:59     *       collector.collectAndReport();60     *61     *       //some other test code62     *   }63     * </code></pre>64     *65     * @throws MockitoAssertionError If there were failed verifications66     * @since 2.1.067     */68    void collectAndReport() throws MockitoAssertionError;69    /**70     * Enforce all verifications are performed lazily. This method is automatically called when71     * used as JUnitRule and normally users don't need to use it.72     * <p>73     * You should only use this method if you are using a VerificationCollector74     * inside a method where only this method should be verified lazily. The other methods can75     * still be verified directly.76     *77     * <pre class="code"><code class="java">78     *   &#064;Test79     *   public void should_verify_lazily() {80     *       VerificationCollector collector = MockitoJUnit.collector().assertLazily();81     *82     *       verify(methods).byteReturningMethod();83     *       verify(methods).simpleMethod();84     *85     *       collector.collectAndReport();86     *   }87     * </code></pre>88     *89     * @return this90     * @since 2.1.091     */92    VerificationCollector assertLazily();93}...

Source:LazyVerificationUnitTest.java

...9import org.mockito.junit.VerificationCollector;10public class LazyVerificationUnitTest {11    @Test12    public void whenLazilyVerified_thenReportsMultipleFailures() {13        VerificationCollector collector = MockitoJUnit.collector()14            .assertLazily();15        List mockList = mock(List.class);16        verify(mockList).add("one");17        verify(mockList).clear();18        try {19            collector.collectAndReport();20        } catch (MockitoAssertionError error) {21            assertTrue(error.getMessage()22                .contains("1. Wanted but not invoked:"));23            assertTrue(error.getMessage()24                .contains("2. Wanted but not invoked:"));25        }26    }27}...

collector

Using AI Code Generation

1import org.junit.runner.RunWith;2import org.mockito.Mock;3import org.mockito.junit.MockitoJUnit;4import org.mockito.junit.MockitoRule;5import org.mockito.junit.MockitoJUnitRunner;6import org.junit.Rule;7import org.junit.Test;8import static org.junit.Assert.*;9import static org.mockito.Mockito.*;10import org.mockito.exceptions.misusing.InvalidUseOfMatchersException;11import org.mockito.exceptions.verification.NoInteractionsWanted;12import org.mockito.exceptions.verification.TooLittleActualInvocations;13import org.mockito.exceptions.verification.junit.ArgumentsAreDifferent;14import org.mockito.exceptions.verification.junit.WantedButNotInvoked;15@RunWith(MockitoJUnitRunner.class)16public class Test1 {17    I1 i1;18    I2 i2;19    public MockitoRule mockitoRule = MockitoJUnit.rule();20    public void test1(){21        when(i1.m1()).thenReturn("a");22        when(i1.m2()).thenReturn("b");23        when(i1.m3()).thenReturn("c");24        when(i2.m1()).thenReturn("d");25        when(i2.m2()).thenReturn("e");26        when(i2.m3()).thenReturn("f");27        assertEquals("a",i1.m1());28        assertEquals("b",i1.m2());29        assertEquals("c",i1.m3());30        assertEquals("d",i2.m1());31        assertEquals("e",i2.m2());32        assertEquals("f",i2.m3());33    }34}35import org.junit.runner.RunWith;36import org.mockito.Mock;37import org.mockito.runners.MockitoJUnitRunner;38import org.junit.Test;39import static org.junit.Assert.*;40import static org.mockito.Mockito.*;41import org.mockito.exceptions.misusing.InvalidUseOfMatchersException;42import org.mockito.exceptions.verification.NoInteractionsWanted;43import org.mockito.exceptions.verification.TooLittleActualInvocations;44import org.mockito.exceptions.verification.junit.ArgumentsAreDifferent;45import org.mockito.exceptions.verification.junit.WantedButNotInvoked;46@RunWith(MockitoJUnitRunner.class)47public class Test2 {48    I1 i1;49    I2 i2;50    public void test1(){51        when(i1.m1()).thenReturn("a");52        when(i1.m2()).thenReturn("b");53        when(i1.m3()).thenReturn

collector

Using AI Code Generation

1import org.mockito.junit.MockitoJUnit;2import org.mockito.junit.MockitoRule;3import org.junit.Rule;4import org.junit.Test;5import static org.junit.Assert.*;6import static org.mockito.Mockito.*;7public class Test1 {8    public MockitoRule mockitoRule = MockitoJUnit.collector();9    public void test1() {10        List mockedList = mock(List.class);11        mockedList.add("one");12        mockedList.clear();13        verify(mockedList).add("one");14        verify(mockedList).clear();15    }16}17Missing method call for verify(mock) here:18-> at Test1.test1(Test1.java:13)19    verify(mock).someMethod();20    verify(mock, times(10)).someMethod();21    verify(mock, atLeastOnce()).someMethod();22    verifyNoMoreInteractions(mock);23The verify() method is used to verify the method calls made on the mock object. The verify() method returns the mock object. The

collector

Using AI Code Generation

1import org.mockito.MockitoAnnotations;2import org.mockito.junit.MockitoJUnit;3import org.mockito.junit.MockitoRule;4import org.mockito.Mock;5import org.junit.Rule;6import org.junit.Test;7import static org.mockito.Mockito.when;8import static org.junit.Assert.assertEquals;9import static org.mockito.Mockito.*;10import static org.mockito.Mockito.times;11import static org.mockito.Mockito.verify;12public class 1 {13    private List mockList;14    public MockitoRule mockitoRule = MockitoJUnit.rule();15    public void testMock() {16        mockList.add("one");17        verify(mockList).add("one");18        verify(mockList, times(1)).add("one");19    }20}21import org.mockito.MockitoAnnotations;22import org.mockito.junit.MockitoJUnit;23import org.mockito.junit.MockitoRule;24import org.mockito.Mock;25import org.junit.Rule;26import org.junit.Test;27import static org.mockito.Mockito.when;28import static org.junit.Assert.assertEquals;29import static org.mockito.Mockito.*;30import static org.mockito.Mockito.times;31import static org.mockito.Mockito.verify;32public class 2 {33    private List mockList;34    public 2() {35        MockitoAnnotations.initMocks(this);36    }37    public void testMock() {38        mockList.add("one");39        verify(mockList).add("one");40        verify(mockList, times(1)).add("one");41    }42}43import org.mockito.MockitoAnnotations;44import org.mockito.junit.MockitoJUnit;45import org.mockito.junit.MockitoRule;46import org.mockito.Mock;47import org.junit.Rule;48import org.junit.Test;49import static org.mockito.Mockito.when;50import static org.junit.Assert.assertEquals;51import static org.mockito.Mockito.*;52import static org.mockito.Mockito.times;53import static org.mockito.Mockito.verify;54public class 3 {55    private List mockList;56    public 3() {57        MockitoAnnotations.initMocks(this);58    }59    public void testMock() {60        mockList.add("one");61        verify(mockList).add("one");62        verify(mockList, times(1)).add("one");63    }64}65import org.mockito.MockitoAnnotations;66import org.mockito.junit.Mockito

collector

Using AI Code Generation

1import org.junit.Test;2import org.junit.runner.RunWith;3import org.mockito.Mock;4import org.mockito.junit.MockitoJUnit;5import org.mockito.junit.MockitoRule;6@RunWith(MockitoJUnit.class)7public class MockitoJUnitTest {8    private List<String> mockList;9    public void testMockList() {10        mockList.add("Hello");11        verify(mockList).add("Hello");12    }13}14mockList.add("Hello");15-> at com.javacodegeeks.mockito.MockitoJUnitTest.testMockList(MockitoJUnitTest.java:16)16	at org.mockito.internal.verification.api.VerificationDataImpl.getUnfinishedVerification(VerificationDataImpl.java:68)17	at org.mockito.internal.verification.VerificationModeFactory.only(VerificationModeFactory.java:73)18	at org.mockito.internal.verification.VerificationModeFactory.only(VerificationModeFactory.java:60)19	at org.mockito.internal.verification.api.VerificationDataImpl.only(VerificationDataImpl.java:43)20	at org.mockito.internal.verification.StrictlyImpl.verify(StrictlyImpl.java:72)21	at org.mockito.internal.verification.StrictlyImpl.verify(StrictlyImpl.java:62)22	at org.mockito.internal.verification.StrictlyImpl.verifyZeroInteractions(StrictlyImpl.java:92)23	at org.mockito.junit.MockitoJUnit.rule(MockitoJUnit.java:50)24	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)25	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)26	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)27	at java.lang.reflect.Method.invoke(Method.java:498)28	at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)29	at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)30	at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)31	at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:24)32	at org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:27)33	at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)34	at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78)35	at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4

collector

Using AI Code Generation

1package com.automation;2import static org.mockito.Mockito.mock;3import static org.mockito.Mockito.verify;4import static org.mockito.Mockito.when;5import java.util.ArrayList;6import java.util.List;7import org.junit.Test;8import org.mockito.ArgumentCaptor;9public class TestMockito1 {10public void test() {11List mockList = mock(ArrayList.class);12when(mockList.get(0)).thenReturn("one");13when(mockList.get(1)).thenReturn("two");14ArgumentCaptor<String> arg = ArgumentCaptor.forClass(String.class);15mockList.add("one");16verify(mockList).add(arg.capture());17System.out.println(arg.getValue());18}19}

collector

Using AI Code Generation

1import org.junit.Test;2import org.mockito.Mockito;3import org.mockito.junit.MockitoJUnit;4import org.mockito.junit.MockitoRule;5import java.util.List;6public class MockitoJUnitTest {7    public void testUsingMockitoJUnit() {8        List<String> list = MockitoJUnit.collector().mock(List.class);9        list.add("one");10        Mockito.verify(list).add("one");11    }12}13import org.junit.Rule;14import org.junit.Test;15import org.mockito.Mock;16import org.mockito.junit.MockitoJUnit;17import org.mockito.junit.MockitoRule;18import java.util.List;19public class MockitoJUnitTest {20    public MockitoRule mockitoRule = MockitoJUnit.rule();21    private List<String> list;22    public void testUsingMockitoJUnit() {23        list.add("one");24        Mockito.verify(list).add("one");25    }26}

collector

Using AI Code Generation

1import org.junit.Rule;2import org.junit.Test;3import org.mockito.junit.MockitoRule;4import org.mockito.junit.MockitoJUnit;5import static org.mockito.Mockito.*;6public class Test1 {7    public MockitoRule mockitoRule = MockitoJUnit.collector().build();8    public void test1() {9        System.out.println("test1");10    }11}12import org.junit.Rule;13import org.junit.Test;14import org.junit.runner.RunWith;15import org.mockito.junit.MockitoJUnitRunner;16import org.mockito.junit.MockitoRule;17import static org.mockito.Mockito.*;18@RunWith(MockitoJUnitRunner.class)19public class Test2 {20    public MockitoRule mockitoRule = MockitoJUnit.rule();21    public void test1() {22        System.out.println("test1");23    }24}25import org.junit.Rule;26import org.junit.Test;27import org.junit.runner.RunWith;28import org.mockito.junit.MockitoJUnitRunner;29import org.mockito.junit.MockitoRule;30import static org.mockito.Mockito.*;31@RunWith(MockitoJUnitRunner.Silent.class)32public class Test3 {33    public MockitoRule mockitoRule = MockitoJUnit.rule();34    public void test1() {35        System.out.println("test1");36    }37}

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.