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How to use getRootCause method of org.assertj.core.api.AbstractThrowableAssert class

Best Assertj code snippet using org.assertj.core.api.AbstractThrowableAssert.getRootCause

Source:AssertHelpers.java

...150                                           String containedInMessage,151                                           Runnable runnable) {152    Assertions.assertThatThrownBy(runnable::run)153        .as(message)154        .getRootCause()155        .isInstanceOf(expected)156        .hasMessageContaining(containedInMessage);157  }158}...

Source:MappingsRegistryInvariantsTest.java

...69            constructor.setAccessible(true);70            constructor.newInstance();71        });72        // Then73        throwableAssert.isNotNull().getRootCause().isInstanceOf(IllegalAccessError.class);74    }75}...

getRootCause

Using AI Code Generation

1package com.automationrhapsody.assertj;2import static org.assertj.core.api.Assertions.assertThat;3import java.io.IOException;4import org.junit.Test;5public class GetRootCauseTest {6    public void testGetRootCause() {7        Throwable thrown = catchThrowable(() -> {8            throw new IOException(new RuntimeException());9        });10        Throwable rootCause = assertThat(thrown).getRootCause();11        assertThat(rootCause).isInstanceOf(RuntimeException.class);12    }13}14at org.assertj.core.api.AbstractThrowableAssert.hasNoCause(AbstractThrowableAssert.java:228)15at org.assertj.core.api.AbstractThrowableAssert.hasNoCause(AbstractThrowableAssert.java:33)16at com.automationrhapsody.assertj.GetRootCauseTest.testGetRootCause(GetRootCauseTest.java:18)

getRootCause

Using AI Code Generation

1package com.automationrhapsody.junit5;2import org.junit.jupiter.api.Test;3import static org.assertj.core.api.Assertions.assertThat;4import static org.assertj.core.api.Assertions.assertThatExceptionOfType;5import static org.assertj.core.api.Assertions.catchThrowable;6public class AssertionsTest {7    public void testException() {8        Throwable thrown = catchThrowable(() -> {9            Class.forName("com.automationrhapsody.junit5.NotExistingClass");10        });11        assertThat(thrown).isNotNull();12        assertThat(thrown).hasMessage("com.automationrhapsody.junit5.NotExistingClass");13        assertThat(thrown).hasNoCause();14        assertThatExceptionOfType(ClassNotFoundException.class).isThrownBy(() -> {15            Class.forName("com.automationrhapsody.junit5.NotExistingClass");16        }).withMessage("com.automationrhapsody.junit5.NotExistingClass")17                .withNoCause();18        Throwable rootCause = assertThatExceptionOfType(ClassNotFoundException.class)19                .isThrownBy(() -> {20                    Class.forName("com.automationrhapsody.junit5.NotExistingClass");21                }).getRootCause();22        assertThat(rootCause).isNull();23    }24}25	at org.assertj.core.api.AbstractThrowableAssert.hasNoCause(AbstractThrowableAssert.java:148)26	at com.automationrhapsody.junit5.AssertionsTest.testException(AssertionsTest.java:23)27	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)28	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)29	at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)30	at java.base/java.lang.reflect.Method.invoke(Method.java:566)31	at org.junit.platform.commons.util.ReflectionUtils.invokeMethod(ReflectionUtils.java:688)32	at org.junit.jupiter.engine.execution.MethodInvocation.proceed(MethodInvocation.java:60)33	at org.junit.jupiter.engine.execution.InvocationInterceptorChain$ValidatingInvocation.proceed(InvocationInterceptorChain.java:131)34	at org.junit.jupiter.engine.extension.TimeoutExtension.intercept(TimeoutExtension.java:149)35	at org.junit.jupiter.engine.extension.TimeoutExtension.interceptTestableMethod(TimeoutExtension.java:140)36	at org.junit.jupiter.engine.extension.TimeoutExtension.interceptTestMethod(TimeoutExtension.java:84)37	at org.junit.jupiter.engine.execution.ExecutableInvoker$ReflectiveInterceptorCall.lambda$ofVoidMethod$0(

getRootCause

Using AI Code Generation

1import org.assertj.core.api.AbstractThrowableAssert;2import org.assertj.core.api.Assertions;3public class 1 {4    public static void main(String[] args) {5        try {6            throw new Exception("Exception 1", new Exception("Exception 2"));7        } catch (Exception e) {8            AbstractThrowableAssert<?, ? extends Throwable> rootCause = Assertions.assertThat(e).getRootCause();9            System.out.println(rootCause);10        }11    }12}

getRootCause

Using AI Code Generation

1import org.assertj.core.api.AbstractThrowableAssert;2import org.assertj.core.api.Assertions;3import org.junit.Test;4import java.io.IOException;5import java.net.SocketException;6{7    public void testRootCause()8    {9        {10            throw new IOException(new SocketException("Connection reset"));11        }12        catch (Exception e)13        {14            Throwable rootCause = Assertions.assertThat(e).getRootCause();15            System.out.println(rootCause);16        }17    }18}

getRootCause

Using AI Code Generation

1import org.assertj.core.api.*;2public class RootCause {3	public static void main(String[] args) {4		Throwable throwable = new Throwable(new Throwable(new Throwable("Root cause")));5		Assertions.assertThat(throwable).getRootCause().hasMessage("Root cause");6	}7}

getRootCause

Using AI Code Generation

1package org.example;2import org.assertj.core.api.AbstractThrowableAssert;3public class App {4    public static void main(String[] args) {5        try {6            throw new Exception("Root cause");7        } catch (Exception e) {8            Throwable rootCause = AbstractThrowableAssert.getRootCause(e);9            System.out.println(rootCause.getMessage());10        }11    }12}

getRootCause

Using AI Code Generation

1public class 1 {2    public static void main(String[] args) {3        Throwable throwable = new Throwable("Root cause");4        Throwable rootCause = new Throwable("Root cause", throwable);5        Throwable cause = new Throwable("Cause", rootCause);6        Throwable exception = new Throwable("Exception", cause);7        ThrowableAssert.assertThat(exception).hasRootCause(throwable);8    }9}

getRootCause

Using AI Code Generation

1import org.assertj.core.api.Assertions;2public class AssertJExceptionDemo {3    public static void main(String[] args) {4        try {5            throw new RuntimeException(new RuntimeException("test"));6        } catch (Exception e) {7            Assertions.assertThat(e).getRootCause().hasMessage("test");8        }9    }10}11import org.assertj.core.api.Assertions;12public class AssertJExceptionDemo {13    public static void main(String[] args) {14        try {15            throw new RuntimeException(new RuntimeException("test"));16        } catch (Exception e) {17            Assertions.assertThat(e).hasMessage("test2");18        }19    }20}21import org.assertj.core.api.Assertions;22public class AssertJExceptionDemo {23    public static void main(String[] args) {24        try {25            throw new RuntimeException(new RuntimeException("test"));26        } catch (Exception e) {27            Assertions.assertThat(e).hasMessage("test");28        }29    }30}31import org.assertj.core.api.Assertions;32public class AssertJExceptionDemo {33    public static void main(String[] args) {34        try {35            throw new RuntimeException(new RuntimeException("test"));36        } catch (Exception e) {37            Assertions.assertThat(e).hasMessage("test2");38        }39    }40}41import org.assertj.core.api.Assertions;42public class AssertJExceptionDemo {43    public static void main(String[] args) {44        try {45            throw new RuntimeException(new RuntimeException("test"));46        } catch (Exception e) {47            Assertions.assertThat(e).hasMessage("test");48        }49    }50}

getRootCause

Using AI Code Generation

1import org.assertj.core.api.AbstractThrowableAssert;2import org.assertj.core.api.Assertions;3import org.junit.Test;4public class RootCauseTest {5	public void testRootCause() {6		Throwable rootCause = Assertions.assertThatThrownBy(() -> {7			throw new RuntimeException("first exception", new RuntimeException("second exception"));8		}).getRootCause();9		System.out.println("Root cause is: " + rootCause.getMessage());10	}11}

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