TestMu Conference is Back! Future of Testing + AI LambdaTest G2 Announcement

How to use withCause method of org.assertj.core.internal.throwables.Throwables_assertHasCauseReference_Test class

Best Assertj code snippet using org.assertj.core.internal.throwables.Throwables_assertHasCauseReference_Test.withCause

Source:Throwables_assertHasCauseReference_Test.java

...29  @Test30  void should_pass_if_actual_cause_and_expected_cause_are_the_same_instance() {31    // GIVEN32    Throwable cause = new IllegalArgumentException("wibble");33    Throwable throwable = withCause(cause);34    // WHEN35    throwables.assertHasCauseReference(INFO, throwable, cause);36    // THEN37    // no exception thrown38  }39  @Test40  void should_pass_if_both_actual_and_expected_causes_are_null() {41    // GIVEN42    Throwable cause = null;43    Throwable throwable = withCause(cause);44    // WHEN45    throwables.assertHasCauseReference(INFO, throwable, cause);46    // THEN47    // no exception thrown48  }49  @SuppressWarnings("unused")50  @ParameterizedTest(name = "{2}: cause = {0} / expected = {1}")51  @MethodSource("failingData")52  void should_fail_if_cause_is_not_same_as_expected(final Throwable cause,53                                                           final Throwable expected,54                                                           String testDescription) {55    // GIVEN56    final Throwable throwable = withCause(cause);57    // WHEN58    expectAssertionError(() -> throwables.assertHasCauseReference(INFO, throwable, expected));59    // THEN60    verify(failures).failure(INFO, shouldHaveCauseReference(cause, expected));61  }62  private static Stream<Arguments> failingData() {63    return Stream.of(Arguments.of(null, new Throwable(), "no actual cause"),64                     Arguments.of(new Throwable(), new Throwable(), "same type different instance"),65                     Arguments.of(new Throwable(), null, "expecting null cause"),66                     Arguments.of(new IllegalArgumentException(), new IndexOutOfBoundsException(), "different types"));67  }68  @Test69  void should_fail_if_actual_is_null() {70    // GIVEN71    final Throwable throwable = null;72    final Throwable cause = new Throwable();73    // WHEN74    AssertionError actual = expectAssertionError(() -> throwables.assertHasCauseReference(INFO, throwable, cause));75    // THEN76    assertThat(actual).hasMessage(actualIsNull());77  }78  private static Throwable withCause(Throwable cause) {79    return new Throwable("bang!", cause);80  }81}...

withCause

Using AI Code Generation

1package org.assertj.core.internal.throwables;2import static org.assertj.core.api.Assertions.assertThat;3import static org.assertj.core.error.ShouldHaveCause.shouldHaveCause;4import static org.assertj.core.test.TestData.someInfo;5import static org.assertj.core.util.AssertionsUtil.expectAssertionError;6import static org.assertj.core.util.FailureMessages.actualIsNull;7import org.assertj.core.api.AssertionInfo;8import org.assertj.core.internal.ThrowablesBaseTest;9import org.junit.Test;10public class Throwables_assertHasCauseReference_Test extends ThrowablesBaseTest {11  public void should_pass_if_actual_has_expected_cause() {12    throwables.assertHasCause(someInfo(), actual, cause);13  }14  public void should_fail_if_actual_is_null() {15    actual = null;16    AssertionError error = expectAssertionError(() -> throwables.assertHasCause(someInfo(), actual, cause));17    assertThat(error).hasMessage(actualIsNull());18  }19  public void should_fail_if_actual_has_no_cause() {20    actual = new RuntimeException();21    AssertionError error = expectAssertionError(() -> throwables.assertHasCause(someInfo(), actual, cause));22    assertThat(error).hasMessage(shouldHaveCause(actual, cause).create());23  }24  public void should_fail_if_actual_has_different_cause() {25    actual = new RuntimeException(new IllegalArgumentException());26    AssertionError error = expectAssertionError(() -> throwables.assertHasCause(someInfo(), actual, cause));27    assertThat(error).hasMessage(shouldHaveCause(actual, cause).create());28  }29  public void should_fail_if_actual_has_same_cause_but_different_instance() {30    actual = new RuntimeException(new IllegalArgumentException());31    AssertionError error = expectAssertionError(() -> throwables.assertHasCause(someInfo(), actual, new IllegalArgumentException()));32    assertThat(error).hasMessage(shouldHaveCause(actual, new IllegalArgumentException()).create());33  }34}

withCause

Using AI Code Generation

1throwables_assertHasCauseReference_Test.useCauseMethod();2throwables_assertHasCauseReference_Test.useCauseInstanceOfMethod();3throwables_assertHasCauseReference_Test.useCauseInstanceOfAnyMethod();4throwables_assertHasCauseReference_Test.useCauseMessageMethod();5throwables_assertHasCauseReference_Test.useCauseMessageContainingMethod();6throwables_assertHasCauseReference_Test.useCauseMessageStartingWithMethod();7throwables_assertHasCauseReference_Test.useCauseMessageEndingWithMethod();8throwables_assertHasCauseReference_Test.useCauseMessageEqualToMethod();9throwables_assertHasCauseReference_Test.useCauseMessageNotContainingMethod();10throwables_assertHasCauseReference_Test.useCauseMessageNotStartingWithMethod();11throwables_assertHasCauseReference_Test.useCauseMessageNotEndingWithMethod();12throwables_assertHasCauseReference_Test.useCauseMessageNotEqualToMethod();13throwables_assertHasCauseReference_Test.useCauseMessageMatchingMethod();

withCause

Using AI Code Generation

1package org.assertj.core.internal.throwables;2import static org.assertj.core.api.Assertions.assertThat;3import static org.assertj.core.error.ShouldHaveCause.shouldHaveCause;4import static org.assertj.core.test.TestData.someInfo;5import static org.assertj.core.util.FailureMessages.actualIsNull;6import static org.assertj.core.util.Throwables.getStackTrace;7import static org.mockito.Mockito.verify;8import org.assertj.core.api.AssertionInfo;9import org.assertj.core.internal.Throwables;10import org.assertj.core.internal.ThrowablesBaseTest;11import org.junit.Test;12public class Throwables_assertHasCause_Test extends ThrowablesBaseTest {13  public void should_pass_if_actual_has_expected_cause() {14    throwables.assertHasCause(someInfo(), throwableWithCause, throwableWithCause.getCause());15  }16  public void should_pass_if_actual_has_expected_cause_with_null_message() {17    throwables.assertHasCause(someInfo(), throwableWithCause, throwableWithCause.getCause());18  }19  public void should_fail_if_actual_has_expected_cause_with_different_message() {20    AssertionInfo info = someInfo();21    Throwable cause = new Throwable("different cause");22    try {23      throwables.assertHasCause(info, throwableWithCause, cause);24    } catch (AssertionError e) {25      verify(failures).failure(info, shouldHaveCause(throwableWithCause, cause));26      return;27    }28    failBecauseExpectedAssertionErrorWasNotThrown();29  }30  public void should_fail_if_actual_has_expected_cause_with_different_stack_trace() {31    AssertionInfo info = someInfo();32    Throwable cause = new Throwable();33    cause.setStackTrace(new StackTraceElement[] { new StackTraceElement("someClass", "someMethod", "someFile", 1) });34    try {35      throwables.assertHasCause(info, throwableWithCause, cause);36    } catch (AssertionError e) {37      verify(failures).failure(info, shouldHaveCause(throwableWithCause, cause));38      return;39    }40    failBecauseExpectedAssertionErrorWasNotThrown();41  }42  public void should_fail_if_actual_has_expected_cause_with_different_type() {43    AssertionInfo info = someInfo();44    Throwable cause = new IllegalArgumentException();45    try {46      throwables.assertHasCause(info, throwableWithCause

withCause

Using AI Code Generation

1@DisplayName("Throwables assertHasCauseReference")2class ThrowablesAssertHasCauseReferenceTest {3    @DisplayName("should pass when cause is the expected one")4    void should_pass_when_cause_is_the_expected_one() {5        Throwable throwable = new Throwable("boom!", new IllegalArgumentException("boom!"));6        assertThat(throwable).hasCauseInstanceOf(IllegalArgumentException.class);7    }8    @DisplayName("should fail when cause is not the expected one")9    void should_fail_when_cause_is_not_the_expected_one() {10        Throwable throwable = new Throwable("boom!", new IllegalArgumentException("boom!"));11        AssertionError assertionError = expectAssertionError(() -> assertThat(throwable).hasCauseInstanceOf(NullPointerException.class));12        then(assertionError).hasMessage(shouldHaveCauseInstanceOf(throwable, NullPointerException.class).create());13    }14}15@DisplayName("Throwables assertHasCauseInstanceOf")16class ThrowablesAssertHasCauseInstanceOfTest {17    @DisplayName("should pass when cause is the expected one")18    void should_pass_when_cause_is_the_expected_one() {19        Throwable throwable = new Throwable("boom!", new IllegalArgumentException("boom!"));20        assertThat(throwable).hasCauseInstanceOf(IllegalArgumentException.class);21    }22    @DisplayName("should fail when cause is not the expected one")23    void should_fail_when_cause_is_not_the_expected_one() {24        Throwable throwable = new Throwable("boom!", new IllegalArgumentException("boom!"));25        AssertionError assertionError = expectAssertionError(() -> assertThat(throwable).hasCauseInstanceOf(NullPointerException.class));26        then(assertionError).hasMessage(shouldHaveCauseInstanceOf(throwable, NullPointerException.class).create());27    }28}29@DisplayName("Throwables assertHasCause")30class ThrowablesAssertHasCauseTest {31    @DisplayName("should pass when cause is the expected one")32    void should_pass_when_cause_is_the_expected_one() {33        Throwable throwable = new Throwable("boom!", new IllegalArgumentException("

withCause

Using AI Code Generation

1import org.assertj.core.api.Assertions;2import org.junit.jupiter.api.Test;3import java.io.IOException;4import java.io.FileNotFoundException;5public class Throwables_assertHasCauseReference_Test {6public void should_pass_if_actual_has_given_cause() {7    Throwable cause = new IOException("boom!");8    Throwable actual = new Throwable(cause);9    Assertions.assertThat(actual).hasCause(cause);10}11public void should_fail_if_actual_has_different_cause() {12    Throwable cause = new IOException("boom!");13    Throwable actual = new Throwable(cause);14    Assertions.assertThatThrownBy(() -> Assertions.assertThat(actual).hasCause(new FileNotFoundException("boom!")))15        .isInstanceOf(AssertionError.class)16        .hasMessage("Expecting actual's cause to be reference to <java.io.FileNotFoundException: boom!>, but was <java.io.IOException: boom!>.");17}18public void should_fail_if_actual_has_no_cause() {19    Throwable actual = new Throwable();20    Assertions.assertThatThrownBy(() -> Assertions.assertThat(actual).hasCause(new FileNotFoundException("boom!")))21        .isInstanceOf(AssertionError.class)22        .hasMessage("Expecting actual's cause to be reference to <java.io.FileNotFoundException: boom!>, but was null.");23}24public void should_fail_if_actual_is_null() {25    Assertions.assertThatThrownBy(() -> Assertions.assertThat((Throwable) null).hasCause(new FileNotFoundException("boom!")))26        .isInstanceOf(AssertionError.class)27        .hasMessage("Expecting actual not to be null");28}29public void should_fail_if_cause_is_null() {30    Assertions.assertThatThrownBy(() -> Assertions.assertThat(new Throwable()).hasCause(null))31        .isInstanceOf(IllegalArgumentException.class)32        .hasMessage("The expected cause should not be null");33}34}

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.