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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.
Top Java Unit testing frameworks - Here are the upcoming JUnit automation testing frameworks that you can use in 2023 to boost your unit testing.
What is the JUnit framework
Why is JUnit testing important - Learn the importance and numerous benefits of using the JUnit testing framework.
Features of JUnit - Learn about the numerous features of JUnit and why developers prefer it.
JUnit 5 vs. JUnit 4: Differences - Here is a complete comparison between JUnit 5 and JUnit 4 testing frameworks.
Setting up the JUnit environment - Learn how to set up your JUnit testing environment.
Getting started with JUnit testing - After successfully setting up your JUnit environment, this chapter will help you get started with JUnit testing in no time.
Parallel testing with JUnit - Parallel Testing can be used to reduce test execution time and improve test efficiency. Learn how to perform parallel testing with JUnit.
Annotations in JUnit - When writing automation scripts with JUnit, we can use JUnit annotations to specify the type of methods in our test code. This helps us identify those methods when we run JUnit tests using Selenium WebDriver. Learn in detail what annotations are in JUnit.
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.
Parameterization in JUnit - Parameterized Test enables you to run the same automated test scripts with different variables. By collecting data on each method's test parameters, you can minimize time spent on writing tests. Learn how to use parameterization in JUnit.
Nested Tests In JUnit 5 - A nested class is a non-static class contained within another class in a hierarchical structure. It can share the state and setup of the outer class. Learn about nested annotations in JUnit 5 with examples.
Best practices for JUnit testing - Learn about the best practices, such as always testing key methods and classes, integrating JUnit tests with your build, and more to get the best possible results.
Advanced Use Cases for JUnit testing - Take a deep dive into the advanced use cases, such as how to run JUnit tests in Jupiter, how to use JUnit 5 Mockito for Unit testing, and more for JUnit testing.