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How to use havingRootCause method of org.assertj.core.api.ThrowableAssertAlternative class

Best Assertj code snippet using org.assertj.core.api.ThrowableAssertAlternative.havingRootCause

Source:ThrowableAssertAlternative_havingRootCause_Test.java

...16import static org.assertj.core.error.ShouldNotBeNull.shouldNotBeNull;17import static org.assertj.core.util.AssertionsUtil.expectAssertionError;18import org.junit.jupiter.api.DisplayName;19import org.junit.jupiter.api.Test;20@DisplayName("ThrowableAssertAlternative havingRootCause")21class ThrowableAssertAlternative_havingRootCause_Test {22  @Test23  void should_return_root_cause_if_throwable_has_cause() {24    // GIVEN25    Throwable rootCause = new Throwable("root message");26    Throwable throwable = new Throwable("top level message", new Throwable("cause message", rootCause));27    // WHEN28    ThrowableAssertAlternative<?> rootCauseAssertions = new ThrowableAssertAlternative<>(throwable).havingRootCause();29    // THEN30    assertThat(rootCauseAssertions.actual).isSameAs(rootCause);31  }32  @Test33  void should_fail_if_throwable_has_no_root_cause() {34    // GIVEN35    Throwable throwable = new Throwable("top level message");36    ThrowableAssertAlternative<Throwable> taa = new ThrowableAssertAlternative<>(throwable);37    // WHEN38    AssertionError error = expectAssertionError(taa::havingRootCause);39    // THEN40    assertThat(error).hasMessage(shouldHaveRootCause(throwable).create());41  }42  @Test43  void should_fail_if_throwable_is_null() {44    // GIVEN45    ThrowableAssertAlternative<Throwable> taa = new ThrowableAssertAlternative<>(null);46    // WHEN47    AssertionError error = expectAssertionError(taa::havingRootCause);48    // THEN49    assertThat(error).hasMessage(shouldNotBeNull().create());50  }51}...

havingRootCause

Using AI Code Generation

1import org.assertj.core.api.ThrowableAssertAlternative;2import org.junit.jupiter.api.Test;3import org.junit.jupiter.api.extension.ExtendWith;4import org.mockito.junit.jupiter.MockitoExtension;5import java.io.IOException;6import static org.assertj.core.api.Assertions.assertThat;7import static org.assertj.core.api.Assertions.assertThatThrownBy;8@ExtendWith(MockitoExtension.class)9public class HavingRootCauseTest {10    public void testHavingRootCause() {11        assertThatThrownBy(() -> {12            try {13                throw new IOException("I/O error");14            } catch (IOException e) {15                throw new IllegalStateException(e);16            }17        })18                .isInstanceOf(IllegalStateException.class)19                .hasMessage("I/O error")20                .hasRootCauseInstanceOf(IOException.class)21                .havingRootCause()22                .hasMessage("I/O error");23    }24}25	at org.assertj.core.api.ThrowableAssertAlternative.havingRootCause(ThrowableAssertAlternative.java:144)26	at org.example.HavingRootCauseTest.testHavingRootCause(Hav

havingRootCause

Using AI Code Generation

1ThrowableAssertAlternative throwableAssertAlternative = assertThat(throwable);2throwableAssertAlternative.havingRootCause(throwable);3ThrowableAssertAlternative throwableAssertAlternative = assertThat(throwable);4throwableAssertAlternative.havingRootCauseMessage("message");5ThrowableAssertAlternative throwableAssertAlternative = assertThat(throwable);6throwableAssertAlternative.havingRootCauseInstanceOf(throwable.getClass());7ThrowableAssertAlternative throwableAssertAlternative = assertThat(throwable);8throwableAssertAlternative.havingRootCauseExactlyInstanceOf(throwable.getClass());9ThrowableAssertAlternative throwableAssertAlternative = assertThat(throwable);10throwableAssertAlternative.havingCause(throwable);11ThrowableAssertAlternative throwableAssertAlternative = assertThat(throwable);12throwableAssertAlternative.havingCauseInstanceOf(throwable.getClass());13ThrowableAssertAlternative throwableAssertAlternative = assertThat(throwable);14throwableAssertAlternative.havingCauseExactlyInstanceOf(throwable.getClass());15ThrowableAssertAlternative throwableAssertAlternative = assertThat(throwable);16throwableAssertAlternative.havingStackTraceContaining("message");17ThrowableAssertAlternative throwableAssertAlternative = assertThat(throwable);18throwableAssertAlternative.havingNoCause();19ThrowableAssertAlternative throwableAssertAlternative = assertThat(throwable);20throwableAssertAlternative.havingMessage("message");21ThrowableAssertAlternative throwableAssertAlternative = assertThat(throwable);22throwableAssertAlternative.havingMessageContaining("message");23ThrowableAssertAlternative throwableAssertAlternative = assertThat(throwable);

havingRootCause

Using AI Code Generation

1assertThatThrownBy(() -> { throw new Exception("boom!"); })2  .havingRootCause()3  .withMessage("boom!");4assertThatThrownBy(() -> { throw new Exception("boom!", new RuntimeException("boom!")); })5  .havingRootCauseInstanceOf(RuntimeException.class)6  .withMessage("boom!");7assertThatThrownBy(() -> { throw new Exception("boom!", new RuntimeException("boom!", new IllegalArgumentException("boom!"))); })8  .havingRootCauseInstanceOf(IllegalArgumentException.class)9  .withMessage("boom!");10assertThatThrownBy(() -> { throw new Exception("boom!", new RuntimeException("boom!", new IllegalArgumentException("boom!"))); })11  .havingRootCause()12  .withMessage("boom!");13assertThatThrownBy(() -> { throw new Exception("boom!", new RuntimeException("boom!", new IllegalArgumentException("boom!"))); })14  .havingRootCause()15  .withMessage("boom!");16assertThatThrownBy(() -> { throw new Exception("boom!", new RuntimeException("boom!", new IllegalArgumentException("boom!"))); })17  .havingRootCause()18  .withMessage("boom!");19assertThatThrownBy(() -> { throw new Exception("boom!", new RuntimeException("boom!", new IllegalArgumentException("boom!"))); })20  .havingRootCause()21  .withMessage("boom!");22assertThatThrownBy(() -> { throw new Exception("boom!", new RuntimeException("boom!", new IllegalArgumentException("boom!"))); })23  .havingRootCause()24  .withMessage("boom!");25assertThatThrownBy(() -> { throw new Exception("boom!", new RuntimeException("boom!", new IllegalArgumentException("boom!"))); })26  .havingRootCause()27  .withMessage("boom!");28assertThatThrownBy(() -> { throw new Exception("boom!", new RuntimeException("boom!", new IllegalArgumentException("boom!"))); })29  .havingRootCause()30  .withMessage("boom!");31assertThatThrownBy(() -> { throw new Exception("boom!", new RuntimeException("boom!", new IllegalArgumentException("boom!"))); })32  .havingRootCause()33  .withMessage("boom!");34assertThatThrownBy(() -> { throw new Exception("boom!", new RuntimeException("boom!", new IllegalArgumentException("boom!"))); })35  .havingRootCause()36  .withMessage("boom!");37assertThatThrownBy(() -> { throw new Exception

havingRootCause

Using AI Code Generation

1import static org.assertj.core.api.Assertions.assertThat;2import static org.assertj.core.api.Assertions.assertThatThrownBy;3import java.io.IOException;4import java.util.function.Supplier;5import org.junit.jupiter.api.Test;6public class ThrowableAssertAlternativeTest {7    public void shouldPassIfGivenThrowableHasGivenCause() {8        Throwable cause = new IOException("boom");9        Supplier<Throwable> supplier = () -> new RuntimeException("boom", cause);10        assertThatThrownBy(supplier)11                .hasRootCause(cause);12    }13    public void shouldFailIfGivenThrowableHasNotGivenCause() {14        Throwable cause = new IOException("boom");15        Supplier<Throwable> supplier = () -> new RuntimeException("boom");16        assertThatThrownBy(supplier)17                .hasRootCause(cause);18    }19}20	at org.assertj.core.api.ThrowableAssertAlternative.hasRootCause(ThrowableAssertAlternative.java:79)21	at org.assertj.core.api.ThrowableAssertAlternative.hasRootCause(ThrowableAssertAlternative.java:73)22	at ThrowableAssertAlternativeTest.shouldFailIfGivenThrowableHasNotGivenCause(ThrowableAssertAlternativeTest.java:27)

havingRootCause

Using AI Code Generation

1assertThat(throwable).havingRootCause().isInstanceOf(RuntimeException.class);2assertThat(throwable).havingRootCause().hasMessageContaining("error");3assertThat(throwable).havingRootCauseInstanceOf(RuntimeException.class);4assertThat(throwable).havingRootCauseInstanceOf(RuntimeException.class).hasMessageContaining("error");5assertThat(throwable).havingRootCauseMessage("error");6assertThat(throwable).havingRootCauseMessageContaining("error");7assertThat(throwable).havingRootCauseMessageMatching("error");8assertThat(throwable).havingRootCauseMessageStartingWith("error");9assertThat(throwable).havingRootCauseMessageEndingWith("error");10assertThat(throwable).havingRootCauseMessageEqualTo("error");11assertThat(throwable).havingRootCauseMessageNotEqualTo("error");12assertThat(throwable).havingRootCauseMessageNotContaining("error");13assertThat(throwable).havingRootCauseMessageNotStartingWith("error");14assertThat(throwable).havingRootCauseMessageNotEndingWith("error");15assertThat(throwable).havingRootCauseMessageNotMatching("error");

havingRootCause

Using AI Code Generation

1Throwable rootCause = new Throwable();2Throwable exception = new Throwable(rootCause);3assertThat(exception).havingRootCause().isEqualTo(rootCause);4[INFO] --- maven-compiler-plugin:3.1:testCompile (default-testCompile) @ assertj-core ---5  symbol:   method havingRootCause()6[ERROR] Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:3.1:testCompile (default-testCompile) on project assertj-core: Compilation failure7[ERROR]   symbol:   method havingRootCause()8org.apache.maven.lifecycle.LifecycleExecutionException: Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:3.1:testCompile (default-testCompile) on project assertj-core: Compilation failure9  symbol:   method havingRootCause()10	at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:213)

havingRootCause

Using AI Code Generation

1public void testRootCause() {2  Throwable exception = new Throwable(new IllegalArgumentException());3  assertThat(exception).havingRootCause().isInstanceOf(IllegalArgumentException.class);4}5public void testRootCause() {6  Throwable exception = new Throwable(new NullPointerException());7  assertThat(exception).havingRootCause().isInstanceOf(NullPointerException.class);8}9public void testRootCause() {10  Throwable exception = new Throwable(new NullPointerException("test"));11  assertThat(exception).havingRootCause().isInstanceOf(NullPointerException.class).hasMessage("test");12}13public void testRootCause() {14  Throwable exception = new Throwable(new NullPointerException("test", new RuntimeException()));15  assertThat(exception).havingRootCause().isInstanceOf(NullPointerException.class).hasMessage("test").hasCauseInstanceOf(RuntimeException.class);16}17public void testRootCause() {18  Throwable exception = new Throwable(new NullPointerException(new RuntimeException()));19  assertThat(exception).havingRootCause().isInstanceOf(NullPointerException.class).hasCauseInstanceOf(RuntimeException.class);20}

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