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How to use hasSingleFailureMatching method of org.junit.experimental.results.ResultMatchers class

Best junit code snippet using org.junit.experimental.results.ResultMatchers.hasSingleFailureMatching

Source:VerifierRuleTest.java

...3import static org.junit.Assert.assertEquals;4import static org.junit.Assert.assertThat;5import static org.junit.experimental.results.PrintableResult.testResult;6import static org.junit.experimental.results.ResultMatchers.hasFailureContaining;7import static org.junit.experimental.results.ResultMatchers.hasSingleFailureMatching;8import static org.junit.experimental.results.ResultMatchers.isSuccessful;9import java.util.concurrent.Callable;10import org.hamcrest.CoreMatchers;11import org.junit.Rule;12import org.junit.Test;13import org.junit.experimental.results.PrintableResult;14import org.junit.function.ThrowingRunnable;15import org.junit.internal.AssumptionViolatedException;16public class VerifierRuleTest {17    public static class UsesErrorCollector {18        @Rule19        public ErrorCollector collector = new ErrorCollector();20        @Test21        public void example() {22            collector.addError(new Throwable("message"));23        }24    }25    @Test26    public void usedErrorCollectorShouldFail() {27        assertThat(testResult(UsesErrorCollector.class), hasFailureContaining("message"));28    }29    public static class PassesAssumptionViolatedExceptionToErrorCollector {30        @Rule31        public ErrorCollector collector = new ErrorCollector();32        @Test33        public void example() {34            collector.addError(new AssumptionViolatedException("message"));35        }36    }37    @Test38    public void passingAssumptionViolatedExceptionShouldResultInFailure() {39        assertThat(testResult(PassesAssumptionViolatedExceptionToErrorCollector.class), hasSingleFailureMatching(40                CoreMatchers.<Throwable>instanceOf(AssertionError.class)));41    }42    public static class UsesErrorCollectorTwice {43        @Rule44        public ErrorCollector collector = new ErrorCollector();45        @Test46        public void example() {47            collector.addError(new Throwable("first thing went wrong"));48            collector.addError(new Throwable("second thing went wrong"));49        }50    }51    @Test52    public void usedErrorCollectorTwiceShouldFail() {53        PrintableResult testResult = testResult(UsesErrorCollectorTwice.class);54        assertThat(testResult, hasFailureContaining("first thing went wrong"));55        assertThat(testResult, hasFailureContaining("second thing went wrong"));56    }57    public static class UsesErrorCollectorCheckThat {58        @Rule59        public ErrorCollector collector = new ErrorCollector();60        @Test61        public void example() {62            collector.checkThat(3, is(4));63            collector.checkThat(5, is(6));64            collector.checkThat("reason 1", 7, is(8));65            collector.checkThat("reason 2", 9, is(16));66        }67    }68    @Test69    public void usedErrorCollectorCheckThatShouldFail() {70        PrintableResult testResult = testResult(UsesErrorCollectorCheckThat.class);71        assertThat(testResult, hasFailureContaining("was <3>"));72        assertThat(testResult, hasFailureContaining("was <5>"));73        assertThat(testResult, hasFailureContaining("reason 1"));74        assertThat(testResult, hasFailureContaining("was <7>"));75        assertThat(testResult, hasFailureContaining("reason 2"));76        assertThat(testResult, hasFailureContaining("was <9>"));77    }78    public static class UsesErrorCollectorCheckSucceeds {79        @Rule80        public ErrorCollector collector = new ErrorCollector();81        @Test82        public void example() {83            collector.checkSucceeds(new Callable<Object>() {84                public Object call() throws Exception {85                    throw new RuntimeException("first!");86                }87            });88            collector.checkSucceeds(new Callable<Integer>() {89                public Integer call() throws Exception {90                    throw new RuntimeException("second!");91                }92            });93            Integer result = collector.checkSucceeds(new Callable<Integer>() {94                public Integer call() throws Exception {95                    return 1;96                }97            });98            assertEquals(Integer.valueOf(1), result);99        }100    }101    @Test102    public void usedErrorCollectorCheckSucceedsShouldFail() {103        PrintableResult testResult = testResult(UsesErrorCollectorCheckSucceeds.class);104        assertThat(testResult, hasFailureContaining("first!"));105        assertThat(testResult, hasFailureContaining("second!"));106    }107    public static class UsesErrorCollectorCheckSucceedsWithAssumptionViolatedException {108        @Rule109        public ErrorCollector collector = new ErrorCollector();110        @Test111        public void example() {112            collector.checkSucceeds(new Callable<Object>() {113                public Object call() throws Exception {114                    throw new AssumptionViolatedException("message");115                }116            });117        }118    }119    @Test120    public void usedErrorCollectorCheckSucceedsWithAssumptionViolatedExceptionShouldFail() {121        PrintableResult testResult = testResult(UsesErrorCollectorCheckSucceedsWithAssumptionViolatedException.class);122        assertThat(testResult, hasSingleFailureMatching(CoreMatchers.<Throwable>instanceOf(AssertionError.class)));123        assertThat(testResult, hasFailureContaining("Callable threw AssumptionViolatedException"));124    }125    public static class UsesErrorCollectorCheckSucceedsPasses {126        @Rule127        public ErrorCollector collector = new ErrorCollector();128        @Test129        public void example() {130            assertEquals(3, collector.checkSucceeds(new Callable<Object>() {131                public Object call() throws Exception {132                    return 3;133                }134            }));135        }136    }...

Source:ResultMatchers.java

2  public org.junit.experimental.results.ResultMatchers();3  public static org.hamcrest.Matcher<org.junit.experimental.results.PrintableResult> isSuccessful();4  public static org.hamcrest.Matcher<org.junit.experimental.results.PrintableResult> failureCountIs(int);5  public static org.hamcrest.Matcher<java.lang.Object> hasSingleFailureContaining(java.lang.String);6  public static org.hamcrest.Matcher<org.junit.experimental.results.PrintableResult> hasSingleFailureMatching(org.hamcrest.Matcher<java.lang.Throwable>);7  public static org.hamcrest.Matcher<org.junit.experimental.results.PrintableResult> hasFailureContaining(java.lang.String);8}...

hasSingleFailureMatching

Using AI Code Generation

1import org.junit.Test;2import static org.junit.Assert.*;3import static org.junit.experimental.results.PrintableResult.*;4import static org.junit.experimental.results.ResultMatchers.*;5public class JUnit4Test {6    public void test() {7        assertThat(testResult(Example.class), hasSingleFailureContaining("failed"));8    }9}10import org.junit.Test;11import static org.junit.Assert.*;12import static org.junit.experimental.results.PrintableResult.*;13import static org.junit.experimental.results.ResultMatchers.*;14public class JUnit4Test {15    public void test() {16        assertThat(testResult(Example.class), hasSingleFailureContaining("failed"));17    }18}19import org.junit.Test;20import static org.junit.Assert.*;21import static org.junit.experimental.results.PrintableResult.*;22import static org.junit.experimental.results.ResultMatchers.*;23public class JUnit4Test {24    public void test() {25        assertThat(testResult(Example.class), hasSingleFailureContaining("failed"));26    }27}28import org.junit.Test;29import static org.junit.Assert.*;30import static org.junit.experimental.results.PrintableResult.*;31import static org.junit.experimental.results.ResultMatchers.*;32public class JUnit4Test {33    public void test() {34        assertThat(testResult(Example.class), hasSingleFailureContaining("failed"));35    }36}37import org.junit.Test;38import static org.junit.Assert.*;39import static org.junit.experimental.results.PrintableResult.*;40import static org.junit.experimental.results.ResultMatchers.*;41public class JUnit4Test {42    public void test() {43        assertThat(testResult(Example.class), hasSingleFailureContaining("failed"));44    }45}46import org.junit.Test;47import static org.junit.Assert.*;48import static org.junit.experimental.results.PrintableResult.*;49import static org.junit.experimental.results.ResultMatchers.*;50public class JUnit4Test {51    public void test() {52        assertThat(testResult(Example.class), hasSingleFailureContaining("failed"));53    }54}55import org.junit.Test;56import static org.junit.Assert.*;57import static org.junit.experimental.results.PrintableResult.*;58import static org.junit.experimental.results.ResultMatchers.*;59public class JUnit4Test {60    public void test() {61        assertThat(testResult(Example.class), hasSingleFailureContaining("failed"));62    }63}64import org.junit.Test;65import static org

hasSingleFailureMatching

Using AI Code Generation

1import org.junit.Test;2import org.junit.experimental.results.PrintableResult;3import org.junit.experimental.results.ResultMatchers;4public class ResultMatcherTest {5    public void test() {6        PrintableResult result = PrintableResult.testResult(ExampleTest.class);7        ResultMatchers.hasSingleFailureMatching(result, "expected:<[1]> but was:<[2]>");8    }9}10import static org.junit.Assert.assertEquals;11public class ExampleTest {12    public void test() {13        assertEquals(1, 2);14    }15}16	at org.junit.Assert.assertEquals(Assert.java:115)17	at org.junit.Assert.assertEquals(Assert.java:144)18	at ExampleTest.test(ExampleTest.java:5)19	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)20	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)21	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)22	at java.lang.reflect.Method.invoke(Method.java:498)23	at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)24	at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)25	at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)26	at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)27	at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:26)28	at org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:27)29	at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)30	at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78)31	at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57)32	at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)33	at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)34	at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)35	at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)36	at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)37	at org.junit.runners.ParentRunner.run(ParentRunner.java:363)

hasSingleFailureMatching

Using AI Code Generation

1import org.junit.Test;2import org.junit.experimental.results.ResultMatchers;3import org.junit.runner.RunWith;4import static org.junit.experimental.results.PrintableResult.testResult;5import static org.junit.experimental.results.ResultMatchers.hasSingleFailureContaining;6@RunWith(JUnitQuickcheck.class)7public class QuickCheckTest {8    public void test(int x, int y) {9        assumeTrue(x != y);10        assertEquals(x, y);11    }12    public void testFailure() {13        assertThat(testResult(QuickCheckTest.class), hasSingleFailureContaining("Falsified after"));14    }15}

hasSingleFailureMatching

Using AI Code Generation

1import org.junit.Test;2import org.junit.experimental.results.ResultMatchers;3import static org.junit.experimental.results.PrintableResult.*;4public class TestResultMatchers {5    public void testHasSingleFailureMatching() throws Exception {6        ResultMatchers.hasSingleFailureMatching(AssertionError.class);7    }8}

hasSingleFailureMatching

Using AI Code Generation

1import org.junit.experimental.results.ResultMatchers;2import static org.junit.experimental.results.PrintableResult.testResult;3import static org.junit.experimental.results.ResultMatchers.*;4import org.junit.Test;5import static org.hamcrest.MatcherAssert.assertThat;6import static org.hamcrest.CoreMatchers.*;7import org.junit.runner.JUnitCore;8import org.junit.runner.Result;9public class TestClass {10public void test1() {11Result result = JUnitCore.runClasses(TestClass1.class);12assertThat(result, hasSingleFailureMatching(isA(IllegalArgumentException.class)));13}14}15package com.test;16public class TestClass1 {17public void test1() {18throw new IllegalArgumentException();19}20}21import org.junit.experimental.results.ResultMatchers;22import static org.junit.experimental.results.PrintableResult.testResult;23import static org.junit.experimental.results.ResultMatchers.*;24import org.junit.Test;25import static org.hamcrest.MatcherAssert.assertThat;26import static org.hamcrest.CoreMatchers.*;27import org.junit.runner.JUnitCore;28import org.junit.runner.Result;29public class TestClass {

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Importance of Unit testing - Learn why Unit testing is essential during the development phase to identify bugs and errors.
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Assertions in JUnit - Assertions are used to validate or test that the result of an action/functionality is the same as expected. Learn in detail what assertions are and how to use them while performing JUnit testing.
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