How to use getFailures method of org.junit.runners.model.MultipleFailureException class

Best junit code snippet using org.junit.runners.model.MultipleFailureException.getFailures

MultipleFailureExceptionorg.junit.runners.model.MultipleFailureException

It happens when Junit runner recognize many failures and collect them into one.

Code Snippets

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...19 }20 @Override21 public String getMessage() {22 StringBuilder sb = new StringBuilder();23 List<Throwable> errors = getFailures();24 sb.append(String.format("There were %d errors:", errors.size()));25 int i = 0;26 for (Throwable e : errors) {27 sb.append(String.format("%n---- Error #%d", i));28 sb.append("\n" + getStackTraceAsString(e));29 i++;30 }31 sb.append("\n");32 return sb.toString();33 }34 private static String getStackTraceAsString(Throwable throwable) {35 StringWriter stringWriter = new StringWriter();36 throwable.printStackTrace(new PrintWriter(stringWriter));37 return stringWriter.toString();...

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getFailures

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1import org.junit.runner.JUnitCore;2import org.junit.runner.Result;3import org.junit.runner.notification.Failure;4import java.util.List;5public class TestRunner {6 public static void main(String[] args) {7 Result result = JUnitCore.runClasses(TestJunit.class);8 List<Failure> failures = result.getFailures();9 for (Failure failure : failures) {10 System.out.println(failure.toString());11 }12 System.out.println(result.wasSuccessful());13 }14}15 at org.junit.Assert.assertEquals(Assert.java:115)16 at org.junit.Assert.assertEquals(Assert.java:144)17 at TestJunit.testAdd(TestJunit.java:11)18 at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)19 at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)20 at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)21 at java.lang.reflect.Method.invoke(Method.java:498)22 at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)23 at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)24 at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)25 at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)26 at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)27 at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78)28 at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57)29 at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)30 at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)31 at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)32 at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)33 at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)34 at org.junit.runners.ParentRunner.run(ParentRunner.java:363)35 at org.junit.runner.JUnitCore.run(JUnitCore.java:137)36 at org.junit.runner.JUnitCore.run(JUnitCore.java:115)

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getFailures

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1import org.junit.Assert;2import org.junit.Test;3import org.junit.runner.JUnitCore;4import org.junit.runner.Result;5import org.junit.runner.notification.Failure;6import java.util.List;7public class TestRunner {8 public static void main(String[] args) {9 Result result = JUnitCore.runClasses(TestRunner.class);10 for (Failure failure : result.getFailures()) {11 System.out.println(failure.toString());12 }13 System.out.println(result.wasSuccessful());14 }15 public void testAssertArrayEquals() {16 byte[] expected = "trial".getBytes();17 byte[] actual = "trial".getBytes();18 Assert.assertArrayEquals("failure - byte arrays not same", expected, actual);19 }20 public void testAssertEquals() {21 Assert.assertEquals("failure - strings are not equal", "text", "text");22 }23 public void testAssertFalse() {24 Assert.assertFalse("failure - should be false", false);25 }26 public void testAssertNotNull() {27 Assert.assertNotNull("should not be null", new Object());28 }29 public void testAssertNotSame() {30 Assert.assertNotSame("should not be same Object", new Object(), new Object());31 }32 public void testAssertNull() {33 Assert.assertNull("should be null", null);34 }35 public void testAssertSame() {36 Integer aNumber = Integer.valueOf(768);37 Assert.assertSame("should be same", aNumber, aNumber);38 }39 public void testAssertTrue() {40 Assert.assertTrue("failure - should be true", true);41 }42 public void testAssertFail() {43 Assert.fail("failure - should not happen");44 }45}

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getFailures

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1package com.mkyong.common;2import org.junit.Test;3import org.junit.runner.JUnitCore;4import org.junit.runner.Result;5import org.junit.runner.RunWith;6import org.junit.runners.model.MultipleFailureException;7import java.util.List;8import static org.junit.Assert.assertEquals;9public class JunitTestMultipleFailureException {10 @RunWith(MyRunner.class)11 public static class MyTest {12 public void test1() {13 assertEquals(1, 2);14 }15 public void test2() {16 assertEquals(1, 2);17 }18 public void test3() {19 assertEquals(1, 2);20 }21 }22 public static class MyRunner extends org.junit.runners.BlockJUnit4ClassRunner {23 public MyRunner(Class<?> klass) throws Throwable {24 super(klass);25 }26 protected void runChild(org.junit.runners.model.FrameworkMethod method,27 org.junit.runner.notification.RunNotifier notifier) {28 try {29 super.runChild(method, notifier);30 } catch (MultipleFailureException e) {31 List<Throwable> failures = e.getFailures();32 for (Throwable throwable : failures) {33 System.out.println(throwable.getMessage());34 }35 }36 }37 }38 public static void main(String[] args) {39 Result result = JUnitCore.runClasses(MyTest.class);40 System.out.println(result.wasSuccessful());41 }42}

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getFailures

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1package org.junit.runner.notification;2import java.util.List;3import org.junit.runner.Description;4import org.junit.runner.notification.Failure;5public class MultipleFailureException extends RuntimeException {6 private static final long serialVersionUID = 1L;7 private final List<Throwable> fFailures;8 public MultipleFailureException(List<Throwable> failures) {9 fFailures = failures;10 }11 public List<Throwable> getFailures() {12 return fFailures;13 }14 public String getMessage() {15 StringBuilder sb = new StringBuilder();16 sb.append("There were ").append(fFailures.size()).append(" failures:");17 for (Throwable each : fFailures) {18 sb.append("1) ").append(each.getMessage());19 }20 return sb.toString();21 }22 public void printStackTrace() {23 printStackTrace(System.err);24 }25 public void printStackTrace(java.io.PrintStream writer) {26 synchronized (writer) {27 for (Throwable each : fFailures) {28 each.printStackTrace(writer);29 writer.println();30 }31 }32 }33 public void printStackTrace(java.io.PrintWriter writer) {34 synchronized (writer) {35 for (Throwable each : fFailures) {36 each.printStackTrace(writer);37 writer.println();38 }39 }40 }41 public static void assertEmpty(List<Throwable> errors) {42 if (!errors.isEmpty()) {43 throw new MultipleFailureException(errors);44 }45 }46 public static void assertEmpty(List<Failure> failures, Description description) {47 if (!failures.isEmpty()) {48 throw new MultipleFailureException(failures, description);49 }50 }51 public MultipleFailureException(List<Failure> failures, Description description) {52 fFailures = new java.util.ArrayList<Throwable>();53 for (Failure each : failures) {54 fFailures.add(new Exception(description + ": " + each.getMessage(), each.getException()));55 }56 }57}

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getFailures

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1import org.junit.runners.model.MultipleFailureException;2import org.junit.runners.model.Statement;3public class MultipleFailureExceptionTest {4 public static void main(String[] args) {5 MultipleFailureExceptionTest multipleFailureExceptionTest = new MultipleFailureExceptionTest();6 multipleFailureExceptionTest.testGetFailures();7 }8 public void testGetFailures() {9 try {10 Statement statement = new Statement() {11 public void evaluate() throws Throwable {12 throw new Exception("exception 1");13 }14 };15 statement.evaluate();16 } catch (Throwable e) {17 try {18 Statement statement = new Statement() {19 public void evaluate() throws Throwable {20 throw new Exception("exception 2");21 }22 };23 statement.evaluate();24 } catch (Throwable e2) {25 try {26 Statement statement = new Statement() {27 public void evaluate() throws Throwable {28 throw new Exception("exception 3");29 }30 };31 statement.evaluate();32 } catch (Throwable e3) {33 MultipleFailureException multipleFailureException = new MultipleFailureException(Arrays.asList(e, e2, e3));34 List<Throwable> failures = multipleFailureException.getFailures();35 for (Throwable throwable : failures) {36 System.out.println(throwable.getMessage());37 }38 }39 }40 }41 }42}

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getFailures

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1MultipleFailureException mfe = new MultipleFailureException(Arrays.asList(new Exception("first exception"), new Exception("second exception")));2List<Throwable> failures = mfe.getFailures();3Failure failure = new Failure(null, new Exception("exception"));4List<Throwable> failures = failure.getException().getFailures();5JUnitCore junit = new JUnitCore();6junit.addListener(new RunListener() {7 public void testFailure(Failure failure) throws Exception {8 List<Throwable> failures = failure.getException().getFailures();9 }10});11junit.run(SampleTest.class);12JUnitCore junit = new JUnitCore();13Result result = junit.run(SampleTest.class);14List<Throwable> failures = result.getFailures();15org.junit.runners.model.MultipleFailureException.getFailures()16org.junit.runner.notification.Failure.getException()17org.junit.runner.JUnitCore.addListener()18org.junit.runner.Result.getFailures()

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getFailures

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1import org.junit.runners.model.MultipleFailureException;2import org.junit.runners.model.TestTimedOutException;3import org.junit.runners.model.TestClass;4import org.junit.runner.notification.Failure;5import org.junit.runner.notification.RunNotifier;6import org.junit.runner.Description;7import org.junit.runner.Result;8import org.junit.runner.Runner;9import org.junit.runner.notification.RunListener;10import org.junit.runners.BlockJUnit4ClassRunner;11import org.junit.runners.model.InitializationError;12import org.junit.runners.model.Statement;13import java.lang.reflect.InvocationTargetException;14import java.lang.reflect.Method;15import java.util.List;16import java.util.ArrayList;17import java.util.Arrays;18import java.util.concurrent.TimeUnit;19import java.util.concurrent.TimeoutException;20import java.util.concurrent.atomic.AtomicReference;21import java.util.logging.Level;22import java.util.logging.Logger;23import static java.util.concurrent.TimeUnit.MILLISECONDS;24import static java.util.concurrent.TimeUnit.NANOSECONDS;25public class JUnit4TestRunner extends BlockJUnit4ClassRunner {26 public JUnit4TestRunner(Class<?> klass) throws InitializationError {27 super(klass);28 }29 public Description getDescription() {30 return super.getDescription();31 }32 public void run(RunNotifier notifier) {33 super.run(notifier);34 }35 protected Statement methodInvoker(FrameworkMethod method, Object test) {36 return super.methodInvoker(method, test);37 }38 protected Statement withPotentialTimeout(FrameworkMethod method, Object test, Statement next) {39 return super.withPotentialTimeout(method, test, next);40 }41 protected void runChild(FrameworkMethod method, RunNotifier notifier) {42 super.runChild(method, notifier);43 }44 protected void validateTestMethods(List<Throwable> errors) {45 super.validateTestMethods(errors);46 }47 protected void validatePublicVoidNoArgMethods(Class<? extends Annotation> annotation, boolean isStatic, List<Throwable> errors) {48 super.validatePublicVoidNoArgMethods(annotation, isStatic, errors);49 }50 protected List<FrameworkMethod> computeTestMethods() {51 return super.computeTestMethods();52 }53 protected void collectInitializationErrors(List<Throwable> errors) {54 super.collectInitializationErrors(errors);55 }

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getFailures

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1import java.util.List;2import org.junit.runner.JUnitCore;3import org.junit.runner.Result;4import org.junit.runner.notification.Failure;5import org.junit.runners.model.MultipleFailureException;6public class TestRunner {7 public static void main(String[] args) {8 Result result = JUnitCore.runClasses(TestJunit.class);9 List<Failure> failures = result.getFailures();10 System.out.println("Failures: " + failures);11 System.out.println("Failures: " + failures.get(0).getException());12 System.out.println("Failures: " + failures.get(1).getException());13 System.out.println("Failures: " + failures.get(2).getException());14 System.out.println("Failures: " + failures.get(3).getException());15 System.out.println("Failures: " + failures.get(4).getException());16 System.out.println("Failures: " + failures.get(5).getException());17 System.out.println("Failures: " + failures.get(6).getException());18 System.out.println("Failures: " + failures.get(7).getException());19 System.out.println("Failures: " + failures.get(8).getException());20 System.out.println("Failures: " + failures.get(9).getException());21 System.out.println("Failures: " + failures.get(10).getException());22 System.out.println("Failures: " + failures.get(11).getException());23 System.out.println("Failures: " + failures.get(12).getException());24 System.out.println("Failures: " + failures.get(13).getException());25 System.out.println("Failures: " + failures.get(14).getException());26 System.out.println("Failures: " + failures.get(15).getException());27 System.out.println("Failures: " + failures.get(16).getException());28 System.out.println("Failures: " + failures.get(17).getException());29 System.out.println("Failures: " + failures.get(18).getException());30 System.out.println("Failures: " + failures.get(19).getException());31 System.out.println("Failures: " + failures.get(20).getException());

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Java JUnit: The method X is ambiguous for type Y

If you add in Hamcrest and JUnit4, you could do:

String x = "foo bar";
Assert.assertThat(x, CoreMatchers.containsString("foo"));

With some static imports, it looks a lot better:

assertThat(x, containsString("foo"));

The static imports needed would be:

import static org.hamcrest.MatcherAssert.assertThat;
import static org.hamcrest.CoreMatchers.containsString;
https://stackoverflow.com/questions/1092219/assertcontains-on-strings-in-junit

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