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How to use getCauses method of org.junit.runners.model.InitializationError class

Best junit code snippet using org.junit.runners.model.InitializationError.getCauses

Source:ErrorReportingRunner.java

...13	private final List<Throwable> fCauses;14	private final Class<?> fTestClass;15	public ErrorReportingRunner(Class<?> testClass, Throwable cause) {16		fTestClass= testClass;17		fCauses= getCauses(cause);18	}19	@Override20	public Description getDescription() {21		Description description= Description.createSuiteDescription(fTestClass);22		for (Throwable each : fCauses)23			description.addChild(describeCause(each));24		return description;25	}26	@Override27	public void run(RunNotifier notifier) {28		for (Throwable each : fCauses)29			runCause(each, notifier);30	}31	private List<Throwable> getCauses(Throwable cause) {32		if (cause instanceof InvocationTargetException)33			return getCauses(cause.getCause());34		if (cause instanceof InitializationError)35			return ((InitializationError) cause).getCauses();36		if (cause instanceof org.junit.internal.runners.InitializationError)37			return ((org.junit.internal.runners.InitializationError) cause)38					.getCauses();39		return Arrays.asList(cause);40	}41	private Description describeCause(Throwable child) {42		return Description.createTestDescription(fTestClass,43				"initializationError");44	}45	private void runCause(Throwable child, RunNotifier notifier) {46		Description description= describeCause(child);47		notifier.fireTestStarted(description);48		notifier.fireTestFailure(new Failure(description, child));49		notifier.fireTestFinished(description);50	}51}...

getCauses

Using AI Code Generation

1import org.junit.runner.notification.RunNotifier;2import org.junit.runners.BlockJUnit4ClassRunner;3import org.junit.runners.model.InitializationError;4public class CustomRunner extends BlockJUnit4ClassRunner {5    public CustomRunner(Class<?> klass) throws InitializationError {6        super(klass);7    }8    public void run(RunNotifier notifier) {9        try {10            super.run(notifier);11        } catch (Throwable e) {12            e.printStackTrace();13        }14    }15}16package com.journaldev.junit;17import org.junit.runner.notification.RunNotifier;18import org.junit.runners.BlockJUnit4ClassRunner;19import org.junit.runners.model.InitializationError;20public class CustomRunner extends BlockJUnit4ClassRunner {21    public CustomRunner(Class<?> klass) throws InitializationError {22        super(klass);23    }24    public void run(RunNotifier notifier) {25        try {26            super.run(notifier);27        } catch (Throwable e) {28            e.printStackTrace();29        }30    }31}32package com.journaldev.junit;33import org.junit.runner.notification.RunNotifier;34import org.junit.runners.BlockJUnit4ClassRunner;35import org.junit.runners.model.InitializationError;

getCauses

Using AI Code Generation

1    public void testGetCauses() {2        try {3            new BlockJUnit4ClassRunner(InnerClass.class);4        } catch (InitializationError e) {5            List<Throwable> causes = e.getCauses();6            Assert.assertTrue(causes.size() == 1);7            Assert.assertTrue(causes.get(0) instanceof Exception);8        }9    }10    public static class InnerClass {11        public InnerClass() throws Exception {12            throw new Exception("Cause");13        }14    }15}16    public void testGetCauses() {17        try {18            new BlockJUnit4ClassRunner(InnerClass.class);19        } catch (InitializationError e) {20            List<Throwable> causes = e.getCauses();21            Assert.assertTrue(causes.size() == 1);22            Assert.assertTrue(causes.get(0) instanceof Exception);23        }24    }25    public static class InnerClass {26        public InnerClass() throws Exception {27            throw new Exception("Cause");28        }29    }30}

getCauses

Using AI Code Generation

1package org.junit.runners.model;2import java.util.List;3public class InitializationError extends Exception {4    private static final long serialVersionUID = 1L;5    private final List<Throwable> fCauses;6    public InitializationError(List<Throwable> causes) {7        fCauses = causes;8    }9    public InitializationError(String string) {10        super(string);11        fCauses = null;12    }13    public InitializationError(Throwable cause) {14        super(cause);15        fCauses = null;16    }17    public List<Throwable> getCauses() {18        return fCauses;19    }20}21package org.junit.runners.model;22import java.util.ArrayList;23import java.util.List;24public class InitializationErrorExample {25    public static void main(String[] args) {26        try {27            throw new InitializationError("Initialization error");28        } catch (InitializationError e) {29            e.printStackTrace();30        }31    }32}33    at org.junit.runners.model.InitializationErrorExample.main(InitializationErrorExample.java:9)34    at org.junit.runners.model.InitializationErrorExample.main(InitializationErrorExample.java:9)

getCauses

Using AI Code Generation

1package org.junit.runners.model;2import java.util.List;3import org.junit.runners.model.InitializationError;4public class InitializationErrorExamples {5    public static void main(String[] args) throws InitializationError {6        InitializationError error = new InitializationError("Exception occurred");7        List<Throwable> causes = error.getCauses();8        System.out.println("causes = " + causes);9    }10}11package org.junit.runners.model;12import org.junit.runners.model.InitializationError;13public class InitializationErrorExamples {14    public static void main(String[] args) throws InitializationError {15        InitializationError error = new InitializationError("Exception occurred");16        error.initCause(new Exception("Exception occurred"));17        throw error;18    }19}20        at org.junit.runners.model.InitializationErrorExamples.main(InitializationErrorExamples.java:9)21        at org.junit.runners.model.InitializationErrorExamples.main(InitializationErrorExamples.java:10)22package org.junit.runners.model;23import org.junit.runners.model.InitializationError;24public class InitializationErrorExamples {25    public static void main(String[] args) throws InitializationError {26        InitializationError error = new InitializationError("Exception occurred");27        throw error;28    }29}30        at org.junit.runners.model.InitializationErrorExamples.main(InitializationErrorExamples.java:9)31package org.junit.runners.model;32import org.junit.runners.model.InitializationError;33public class InitializationErrorExamples {34    public static void main(String[] args) throws InitializationError {35        InitializationError error = new InitializationError("Exception occurred");36        error.initCause(new Exception("Exception occurred"));37        throw error;38    }39}

getCauses

Using AI Code Generation

1import java.util.List;2import org.junit.runners.model.InitializationError;3public class CustomRunner extends ParentRunner<FrameworkMethod> {4    public CustomRunner(Class<?> klass) throws InitializationError {5        super(klass);6        try {7        } catch (Exception e) {8            InitializationError ex = new InitializationError(e);9            List<Throwable> causes = ex.getCauses();10            throw ex;11        }12    }13}14	at org.junit.runners.model.InitializationError.<init>(InitializationError.java:28)15	at CustomRunner.<init>(CustomRunner.java:14)16	at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)17	at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)18	at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)19	at java.lang.reflect.Constructor.newInstance(Constructor.java:423)20	at java.lang.Class.newInstance(Class.java:442)21	at org.junit.internal.builders.AnnotatedBuilder.buildRunner(AnnotatedBuilder.java:104)22	at org.junit.internal.builders.AnnotatedBuilder.runnerForClass(AnnotatedBuilder.java:86)23	at org.junit.runners.model.RunnerBuilder.safeRunnerForClass(RunnerBuilder.java:59)24	at org.junit.internal.builders.AllDefaultPossibilitiesBuilder.runnerForClass(AllDefaultPossibilitiesBuilder.java:26)25	at org.junit.runners.model.RunnerBuilder.safeRunnerForClass(RunnerBuilder.java:59)26	at org.junit.internal.requests.ClassRequest.getRunner(ClassRequest.java:33)27	at org.junit.internal.requests.FilterRequest.getRunner(FilterRequest.java:36)28	at org.junit.runner.JUnitCore.run(JUnitCore.java:157)29	at org.junit.runner.JUnitCore.run(JUnitCore.java:136)30	at org.junit.vintage.engine.execution.RunnerExecutor.execute(RunnerExecutor.java:41)31	at org.junit.vintage.engine.VintageTestEngine.executeAllChildren(VintageTestEngine.java:82)32	at org.junit.vintage.engine.VintageTestEngine.execute(VintageTestEngine.java:73)33	at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:220)34	at org.junit.platform.launcher.core.DefaultLauncher.lambda$execute$6(DefaultLauncher.java:188)35	at org.junit.platform.launcher.core.DefaultLauncher.withInterceptedStreams(DefaultLauncher.java

getCauses

Using AI Code Generation

1import org.junit.runners.model.InitializationError;2import org.junit.runners.model.Statement;3import org.junit.runners.BlockJUnit4ClassRunner;4import org.junit.runners.model.FrameworkMethod;5import org.junit.runners.model.Statement;6import org.junit.runners.model.TestTimedOutException;7public class JUnit4Runner extends BlockJUnit4ClassRunner {8    public JUnit4Runner(Class<?> klass) throws InitializationError {9        super(klass);10    }11    protected Statement methodInvoker(FrameworkMethod method, Object test) {12        return new Statement() {13            public void evaluate() throws Throwable {14                try {15                    method.invokeExplosively(test);16                } catch (Throwable e) {17                    System.out.println("Root cause: " + e.getCause());18                    System.out.println("Exception: " + e);19                }20            }21        };22    }23}

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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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