KaneAI - World’s First E2E Software Testing Agent.Signup for Private Beta Join TestMu Conference

How to use ShouldHaveRootCause class of org.assertj.core.error package

Best Assertj code snippet using org.assertj.core.error.ShouldHaveRootCause

Source:ShouldHaveRootCause.java

...14import static org.assertj.core.util.Preconditions.checkArgument;15import static org.assertj.core.util.Strings.escapePercent;16import static org.assertj.core.util.Throwables.getStackTrace;17import java.util.Objects;18public class ShouldHaveRootCause extends BasicErrorMessageFactory {19  public static ErrorMessageFactory shouldHaveRootCauseWithMessage(Throwable actual, Throwable actualCause,20                                                                   String expectedMessage) {21    checkArgument(actual != null, "actual should not be null");22    checkArgument(expectedMessage != null, "expected root cause message should not be null");23    if (actualCause == null) return new ShouldHaveRootCause(actual, expectedMessage);24    return new ShouldHaveRootCause(actual, actualCause, expectedMessage);25  }26  public static ErrorMessageFactory shouldHaveRootCause(Throwable actual, Throwable actualCause, Throwable expectedCause) {27    checkArgument(actual != null, "actual should not be null");28    checkArgument(expectedCause != null, "expected cause should not be null");29    // actualCause has no cause30    if (actualCause == null) return new ShouldHaveRootCause(actual, expectedCause);31    // same message => different type32    if (Objects.equals(actualCause.getMessage(), expectedCause.getMessage()))33      return new ShouldHaveRootCause(actual, actualCause, expectedCause.getClass());34    // same type => different message35    if (Objects.equals(actualCause.getClass(), expectedCause.getClass()))36      return new ShouldHaveRootCause(actual, actualCause, expectedCause.getMessage());37    return new ShouldHaveRootCause(actual, actualCause, expectedCause);38  }39  public static ErrorMessageFactory shouldHaveRootCause(Throwable actualCause) {40    return new BasicErrorMessageFactory("Expecting actual throwable to have a root cause but it did not, actual was:%n%s",41                                        actualCause);42  }43  private ShouldHaveRootCause(Throwable actual, Throwable actualCause, Throwable expectedCause) {44    super("%n" +45          "Expecting a root cause with type:%n" +46          "  %s%n" +47          "and message:%n" +48          "  %s%n" +49          "but type was:%n" +50          "  %s%n" +51          "and message was:%n" +52          "  %s." +53          "%n" +54          "Throwable that failed the check:%n" +55          "%n" + escapePercent(getStackTrace(actual)), // to avoid AssertJ default String formatting56          expectedCause.getClass().getName(), expectedCause.getMessage(),57          actualCause.getClass().getName(), actualCause.getMessage());58  }59  private ShouldHaveRootCause(Throwable actual, Throwable expectedCause) {60    super("%n" +61          "Expecting a root cause with type:%n" +62          "  %s%n" +63          "and message:%n" +64          "  %s%n" +65          "but actual had no root cause." +66          "%n" +67          "Throwable that failed the check:%n" +68          "%n" + escapePercent(getStackTrace(actual)), // to avoid AssertJ default String formatting69          expectedCause.getClass().getName(), expectedCause.getMessage());70  }71  private ShouldHaveRootCause(Throwable actual, Throwable actualCause, Class<? extends Throwable> expectedCauseClass) {72    super("%n" +73          "Expecting a root cause with type:%n" +74          "  %s%n" +75          "but type was:%n" +76          "  %s." +77          "%n" +78          "Throwable that failed the check:%n" +79          "%n" + escapePercent(getStackTrace(actual)), // to avoid AssertJ default String formatting80          expectedCauseClass.getName(), actualCause.getClass().getName());81  }82  private ShouldHaveRootCause(Throwable actual, String expectedMessage) {83    super("%n" +84          "Expecting a root cause with message:%n" +85          "  %s%n" +86          "but actual had no root cause." +87          "%n" +88          "Throwable that failed the check:%n" +89          "%n" + escapePercent(getStackTrace(actual)), // to avoid AssertJ default String formatting90          expectedMessage);91  }92  private ShouldHaveRootCause(Throwable actual, Throwable actualCause, String expectedCauseMessage) {93    super("%n" +94          "Expecting a root cause with message:%n" +95          "  %s%n" +96          "but message was:%n" +97          "  %s." +98          "%n" +99          "Throwable that failed the check:%n" +100          "%n" + escapePercent(getStackTrace(actual)), // to avoid AssertJ default String formatting101          expectedCauseMessage, actualCause.getMessage());102  }103}...

Source:ShouldHaveRootCause_create_Test.java

...15import org.assertj.core.internal.TestDescription;16import org.junit.jupiter.api.Test;17/**18 * Tests for19 * <code>{@link ShouldHaveRootCause#shouldHaveRootCause(Throwable, Throwable)}</code>20 *21 * @author Jack Gough22 */23public class ShouldHaveRootCause_create_Test {24    private static final TestDescription DESCRIPTION = new TestDescription("TEST");25    @Test26    public void should_create_error_message_for_expected_without_actual() {27        // GIVEN28        Throwable actualCause = null;29        Throwable expectedCause = new RuntimeException("hello");30        // WHEN31        String actual = ShouldHaveRootCause.shouldHaveRootCause(actualCause, expectedCause).create(ShouldHaveRootCause_create_Test.DESCRIPTION);32        // THEN33        Assertions.assertThat(actual).isEqualTo(String.format(("[TEST] %n" + (((("Expecting a root cause with type:%n" + "  <\"java.lang.RuntimeException\">%n") + "and message:%n") + "  <\"hello\">%n") + "but actual had no root cause."))));34    }35    @Test36    public void should_create_error_message_for_unequal_types() {37        // GIVEN38        Throwable actualCause = new IllegalArgumentException("one");39        Throwable expectedCause = new RuntimeException("one");40        // WHEN41        String actual = ShouldHaveRootCause.shouldHaveRootCause(actualCause, expectedCause).create(ShouldHaveRootCause_create_Test.DESCRIPTION);42        // THEN43        Assertions.assertThat(actual).isEqualTo(String.format(("[TEST] %n" + ((("Expecting a root cause with type:%n" + "  <\"java.lang.RuntimeException\">%n") + "but type was:%n") + "  <\"java.lang.IllegalArgumentException\">."))));44    }45    @Test46    public void should_create_error_message_for_unequal_messages() {47        // GIVEN48        Throwable actualCause = new RuntimeException("wibble");49        Throwable expectedCause = new RuntimeException("wobble");50        // WHEN51        String actual = ShouldHaveRootCause.shouldHaveRootCause(actualCause, expectedCause).create(ShouldHaveRootCause_create_Test.DESCRIPTION);52        // THEN53        Assertions.assertThat(actual).isEqualTo(String.format(("[TEST] %n" + ((("Expecting a root cause with message:%n" + "  <\"wobble\">%n") + "but message was:%n") + "  <\"wibble\">."))));54    }55    @Test56    public void should_create_error_message_for_unequal_types_and_messages() {57        // GIVEN58        Throwable actualCause = new RuntimeException("wibble");59        Throwable expectedCause = new IllegalArgumentException("wobble");60        // WHEN61        String actual = ShouldHaveRootCause.shouldHaveRootCause(actualCause, expectedCause).create(ShouldHaveRootCause_create_Test.DESCRIPTION);62        // THEN63        Assertions.assertThat(actual).isEqualTo(String.format(("[TEST] %n" + ((((((("Expecting a root cause with type:%n" + "  <\"java.lang.IllegalArgumentException\">%n") + "and message:%n") + "  <\"wobble\">%n") + "but type was:%n") + "  <\"java.lang.RuntimeException\">%n") + "and message was:%n") + "  <\"wibble\">."))));64    }65}

ShouldHaveRootCause

Using AI Code Generation

1package org.assertj.core.error;2import org.assertj.core.internal.TestDescription;3import org.assertj.core.presentation.StandardRepresentation;4import org.junit.Test;5import static org.assertj.core.api.Assertions.assertThat;6import static org.assertj.core.error.ShouldHaveRootCause.shouldHaveRootCause;7import static org.assertj.core.error.ShouldHaveRootCause.shouldHaveRootCauseInstanceOf;8public class ShouldHaveRootCause_create_Test {9  public void should_create_error_message() {10    String message = shouldHaveRootCause(new NullPointerException("boom")).create(new TestDescription("TEST"),11                                                                                   new StandardRepresentation());12    assertThat(message).isEqualTo(String.format("[TEST] %n" +13                                                "  <java.lang.NullPointerException: boom>"));14  }15  public void should_create_error_message_with_expected_root_cause() {16    String message = shouldHaveRootCause(new NullPointerException("boom"), new IllegalArgumentException("boom"))17        .create(new TestDescription("TEST"), new StandardRepresentation());18    assertThat(message).isEqualTo(String.format("[TEST] %n" +19                                                "  <java.lang.NullPointerException: boom>"));20  }21  public void should_create_error_message_with_expected_root_cause_type() {22    String message = shouldHaveRootCauseInstanceOf(new NullPointerException("boom"), IllegalArgumentException.class)23        .create(new TestDescription("TEST"), new StandardRepresentation());24    assertThat(message).isEqualTo(String.format("[TEST] %n" +25                                                "  <java.lang.NullPointerException>"));26  }

ShouldHaveRootCause

Using AI Code Generation

1import static org.assertj.core.api.Assertions.assertThat;2import static org.assertj.core.error.ShouldHaveRootCause.shouldHaveRootCause;3import static org.assertj.core.util.Throwables.getRootCause;4import static org.assertj.core.util.Throwables.getStackTrace;5import java.io.IOException;6import org.junit.Test;7import org.assertj.core.api.ThrowableAssert.ThrowingCallable;8public class ShouldHaveRootCauseTest {9  public void should_create_error_message() {10    Throwable cause = new IOException("boom");11    Throwable exception = new IllegalArgumentException("boom", cause);12    String message = shouldHaveRootCause(exception, cause).create();13    assertThat(message).isEqualTo(String.format("%nExpecting root cause of:%n  %s%nto be:%n  %s%nbut was:%n  %s",14                                                getStackTrace(exception),15                                                getStackTrace(cause),16                                                getStackTrace(getRootCause(exception))));17  }18}19    at org.assertj.core.error.ShouldHaveRootCauseTest.should_create_error_message(ShouldHaveRootCauseTest.java:19)20    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)21    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)22    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)23    at java.lang.reflect.Method.invoke(Method.java:498)24    at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)25    at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)26    at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)27    at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)28    at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:26)29    at org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:27)30    at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)31    at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78)32    at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57)33    at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)

ShouldHaveRootCause

Using AI Code Generation

1import static org.assertj.core.api.Assertions.assertThat;2import static org.assertj.core.api.Assertions.catchThrowable;3public class ShouldHaveRootCause {4    public static void main(String[] args) {5        Throwable throwable = catchThrowable(() -> {6            throw new RuntimeException("boom!");7        });8        assertThat(throwable).hasRootCauseInstanceOf(RuntimeException.class);9    }10}11	at org.assertj.core.error.ShouldHaveRootCause.shouldHaveRootCause(ShouldHaveRootCause.java:31)12	at org.assertj.core.internal.Throwables.assertHasRootCauseInstanceOf(Throwables.java:138)13	at org.assertj.core.api.AbstractThrowableAssert.hasRootCauseInstanceOf(AbstractThrowableAssert.java:275)14	at ShouldHaveRootCause.main(ShouldHaveRootCause.java:14)15import static org.assertj.core.api.Assertions.assertThat;16import static org.assertj.core.api.Assertions.catchThrowable;17public class ShouldHaveRootCause {18    public static void main(String[] args) {19        Throwable throwable = catchThrowable(() -> {20            throw new RuntimeException(new Exception("boom!"));21        });22        assertThat(throwable).hasRootCauseInstanceOf(Exception.class);23    }24}25	at org.assertj.core.error.ShouldHaveRootCause.shouldHaveRootCause(ShouldHaveRootCause.java:31)26	at org.assertj.core.internal.Throwables.assertHasRootCauseInstanceOf(Throwables.java:138)27	at org.assertj.core.api.AbstractThrowableAssert.hasRootCauseInstanceOf(AbstractThrowableAssert.java:275)28	at ShouldHaveRootCause.main(ShouldHaveRootCause.java:

ShouldHaveRootCause

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 ShouldHaveRootCauseTest {6    public void testShouldHaveRootCause() {7        try {8            throw new RuntimeException(new IOException("IO Exception"));9        } catch (Exception e) {10            assertThat(e).hasRootCauseInstanceOf(IOException.class);11        }12    }13}

ShouldHaveRootCause

Using AI Code Generation

1package com.automationrhapsody.assertj;2import static org.assertj.core.api.Assertions.assertThat;3import org.junit.Test;4public class ShouldHaveRootCauseTest {5    public void testShouldHaveRootCause() {6        try {7            throw new RuntimeException(new Exception("Root cause"));8        } catch (Exception e) {9            assertThat(e).hasRootCauseMessage("Root cause");10        }11    }12}13Nikolaos Tampakopoulos is a software engineer with 15+ years of experience in the IT industry. He is a Java Champion, an Oracle Certified Master (OCPJP, OCMJD, OCEJPA), and a Certified Scrum Master (CSM). He is the author of the books Java EE 7 Essentials, Java EE 8 Essentials, and Java EE 8 Security Essentials. He is also the author of the Java EE 7 Recipes and Java EE 8 Recipes books. Nikolaos is a committer and PMC member of the Apache OpenWebBeans project. He is a regular speaker at international conferences and Java user groups. You can follow him on Twitter and Lin

ShouldHaveRootCause

Using AI Code Generation

1import org.assertj.core.api.Assertions;2import org.assertj.core.api.ThrowableAssert;3import org.assertj.core.error.ShouldHaveRootCause;4import org.junit.Test;5public class AssertJTest {6    public void test1() {7        ThrowableAssert.ThrowingCallable code = () -> {8            throw new Exception("test", new Exception("test2"));9        };10        Assertions.assertThatThrownBy(code).hasRootCauseInstanceOf(Exception.class);11    }12    public void test2() {13        ThrowableAssert.ThrowingCallable code = () -> {14            throw new Exception("test", new Exception("test2"));15        };16        Assertions.assertThatThrownBy(code).hasRootCauseInstanceOf(RuntimeException.class);17    }18}19	at org.assertj.core.api.ThrowableAssert.hasRootCauseInstanceOf(ThrowableAssert.java:133)20	at AssertJTest.test2(AssertJTest.java:22)21	at org.assertj.core.api.ThrowableAssert.hasRootCauseInstanceOf(ThrowableAssert.java:133)22	at AssertJTest.test1(AssertJTest.java:16)23package org.assertj.core.error;24import org.assertj.core.internal.*;25import org.assertj.core.util.*;26public class ShouldHaveRootCause extends BasicErrorMessageFactory {27    public static ErrorMessageFactory shouldHaveRootCause(Throwable actual, Class<? extends Throwable> expectedRootCauseType) {28        return new ShouldHaveRootCause(actual, expected

ShouldHaveRootCause

Using AI Code Generation

1import org.junit.Test;2import org.assertj.core.api.Assertions;3import org.assertj.core.error.ShouldHaveRootCause;4import org.assertj.core.internal.TestDescription;5import org.assertj.core.presentation.StandardRepresentation;6import org.assertj.core.util.Throwables;7public class ShouldHaveRootCauseTest {8    public void should_create_error_message() {9        final Throwable actual = Throwables.propagate(new Exception("cause"));10        final Throwable expected = Throwables.propagate(new Exception("root"));11        final String message = ShouldHaveRootCause.shouldHaveRootCause(actual, expected).create(new TestDescription("TEST"), new StandardRepresentation());12        Assertions.assertThat(message).isEqualTo(String.format("[TEST] %n" + "Expecting root cause of:%n" + "  <java.lang.Exception: cause>%n" + "to be:%n" + "  <java.lang.Exception: root>%n" + "but was:%n" + "  <java.lang.Exception: cause>"));13    }14}

ShouldHaveRootCause

Using AI Code Generation

1package com.example;2import org.assertj.core.api.ThrowableAssert;3import org.assertj.core.error.ShouldHaveRootCause;4import org.assertj.core.internal.Failures;5public class AssertJExample {6    public static void main(String[] args) {7        try {8            throw new RuntimeException("This is a RuntimeException");9        } catch (RuntimeException e) {10            Failures.instance().failureInfo().fact("message", "should have root cause");11            Failures.instance().failureInfo().fact("cause", e.getCause());12            Failures.instance().failureInfo().fact("root cause", e);13            ThrowableAssert.assertThrowable(e).hasRootCauseInstanceOf(NullPointerException.class);14        }15    }16}17package com.example;18import org.assertj.core.api.ThrowableAssert;19import org.assertj.core.error.ShouldHaveRootCause;20import org.assertj.core.internal.Failures;21public class AssertJExample {22    public static void main(String[] args) {23        try {24            throw new RuntimeException("This is a RuntimeException");25        } catch (RuntimeException e) {26            Failures.instance().failureInfo().fact("message", "should have root cause");27            Failures.instance().failureInfo().fact("cause", e.getCause());28            Failures.instance().failureInfo().fact("root cause", e);29            ThrowableAssert.assertThrowable(e).hasRootCauseInstanceOf(NullPointerException.class);30        }31    }32}

ShouldHaveRootCause

Using AI Code Generation

1import org.assertj.core.api.*;2import org.assertj.core.error.*;3import org.assertj.core.internal.*;4import org.junit.Test;5public class ShouldHaveRootCauseTest {6    public void test() {7        Assertions.assertThatThrownBy(() -> {8            throw new NullPointerException("Root cause");9        }).hasRootCause(new NullPointerException("Root cause"));10    }11}

ShouldHaveRootCause

Using AI Code Generation

1import static org.assertj.core.api.Assertions.assertThat;2import static org.assertj.core.api.Assertions.catchThrowable;3import static org.assertj.core.error.ShouldHaveRootCause.shouldHaveRootCause;4import static org.assertj.core.error.ShouldHaveRootCause.shouldHaveRootCauseInstance;5import static org.assertj.core.error.ShouldHaveRootCause.shouldHaveRootCauseInstanceOf;6import static org.assertj.core.error.ShouldHaveRootCause.shouldHaveRootCauseMessage;7import static org.assertj.core.error.ShouldHaveRootCause.shouldHaveRootCauseMessageContaining;8import static org.assertj.core.error.ShouldHaveRootCause.shouldHaveRootCauseMessageMatching;9import static org.assertj.core.error.ShouldHaveRootCause.shouldHaveRootCauseMessageStartingWith;10import static org.assertj.core.error.ShouldHaveRootCause.shouldHaveRootCauseMessageEndingWith;11import static org.assertj.core.error.ShouldHaveRootCause.shouldHaveRootCauseMessageNull;12import static org.assertj.core.error.ShouldHaveRootCause.shouldHaveNoRootCause;13public class AssertJExceptionRootCauseTest {14    public static void main(String[] args) {15        Throwable throwable = new Throwable(new Throwable(new Throwable(new Throwable())));16        Throwable rootCause = throwable.getCause().getCause().getCause().getCause();17        Throwable actualRootCause = throwable;18        assertThat(actualRootCause).hasRootCause(rootCause);19        assertThat(actualRootCause).hasRootCauseInstanceOf(Throwable.class);20        assertThat(actualRootCause).hasRootCauseMessage("root cause message");21        assertThat(actualRootCause).hasRootCauseMessageContaining("root cause");22        assertThat(actualRootCause).hasRootCauseMessageMatching("root cause.*");23        assertThat(actualRootCause).hasRootCauseMessageStartingWith("root cause");24        assertThat(actualRootCause).hasRootCauseMessageEndingWith("message");25        assertThat(actualRootCause).hasRootCauseMessageNull();26        assertThat(actualRootCause).hasNoRootCause();27    }28}

Automation Testing Tutorials

Learn to execute automation testing from scratch with LambdaTest Learning Hub. Right from setting up the prerequisites to run your first automation test, to following best practices and diving deeper into advanced test scenarios. LambdaTest Learning Hubs compile a list of step-by-step guides to help you be proficient with different test automation frameworks i.e. Selenium, Cypress, TestNG etc.