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

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

Source:ThrowableAssertAlternative.java

...383   *384   * // assertion will pass385   * assertThatExceptionOfType(Throwable.class)386   *           .isThrownBy(() -&gt; {throw throwable;})387   *           .withRootCauseExactlyInstanceOf(NullPointerException.class);388   *389   * // assertion will fail (even if NullPointerException is a RuntimeException since we want an exact match)390   * assertThatExceptionOfType(Throwable.class)391   *           .isThrownBy(() -&gt; {throw throwable;})392   *           .withRootCauseExactlyInstanceOf(RuntimeException.class);393   * assertThatExceptionOfType(Throwable.class)394   *           .isThrownBy(() -&gt; {throw throwable;})395   *           .withRootCauseExactlyInstanceOf(IllegalStateException.class);</code></pre>396   *397   * @param type the expected cause type.398   * @return this assertion object.399   * @throws NullPointerException if given type is {@code null}.400   * @throws AssertionError if the actual {@code Throwable} is {@code null}.401   * @throws AssertionError if the actual {@code Throwable} has no cause.402   * @throws AssertionError if the root cause of the actual {@code Throwable} is not <b>exactly</b> an instance of the403   *           given type.404   * @see AbstractThrowableAssert#hasRootCauseExactlyInstanceOf(Class)405   */406  public ThrowableAssertAlternative<T> withRootCauseExactlyInstanceOf(Class<? extends Throwable> type) {407    delegate.hasRootCauseExactlyInstanceOf(type);408    return this;409  }410  /** {@inheritDoc} */411  @Override412  @CheckReturnValue413  public ThrowableAssertAlternative<T> describedAs(String description, Object... args) {414    delegate.describedAs(description, args);415    return super.describedAs(description, args);416  }417  /** {@inheritDoc} */418  @Override419  @CheckReturnValue420  public ThrowableAssertAlternative<T> describedAs(Description description) {...

withRootCauseExactlyInstanceOf

Using AI Code Generation

1import org.assertj.core.api.ThrowableAssertAlternative;2import org.assertj.core.api.ThrowableAssertAlternativeBaseTest;3import org.junit.jupiter.api.Test;4import static org.assertj.core.api.Assertions.assertThat;5import static org.assertj.core.api.Assertions.assertThatExceptionOfType;6import static org.mockito.Mockito.mock;7import static org.mockito.Mockito.when;8import static org.mockito.Mockito.verify;9class ThrowableAssertAlternative_withRootCauseExactlyInstanceOf_Test extends ThrowableAssertAlternativeBaseTest {10  void should_pass_if_actual_has_root_cause_exactly_of_type() {11    Throwable actual = new Throwable(new IllegalArgumentException("boom"));12    assertThat(actual).withRootCauseExactlyInstanceOf(IllegalArgumentException.class);13  }14  void should_fail_if_actual_has_root_cause_of_type() {15    Throwable actual = new Throwable(new IllegalArgumentException("boom"));16    assertThatExceptionOfType(AssertionError.class).isThrownBy(() -> assertThat(actual).withRootCauseExactlyInstanceOf(Exception.class))17                                                   .withMessageContaining("Expecting root cause to be an instance of")18                                                   .withMessageContaining("but was an instance of");19  }20  void should_fail_if_actual_has_no_root_cause() {21    Throwable actual = new Throwable("boom");22    assertThatExceptionOfType(AssertionError.class).isThrownBy(() -> assertThat(actual).withRootCauseExactlyInstanceOf(Exception.class))23                                                   .withMessageContaining("Expecting root cause to be an instance of")24                                                   .withMessageContaining("but was null");25  }26  void should_fail_if_actual_is_null() {27    assertThatExceptionOfType(AssertionError.class).isThrownBy(() -> assertThat((Throwable) null).withRootCauseExactlyInstanceOf(Exception.class))28                                                   .withMessage("Expecting actual not to be null");29  }30  protected ThrowableAssertAlternative<Throwable> invoke_api_method() {31    return assertions.withRootCauseExactlyInstanceOf(Exception.class);32  }33  protected void verify_internal_effects() {34    verify(throwables).assertHasRootCauseExactlyInstanceOf(getInfo(assertions), getActual(assertions), Exception.class);35  }36}37import org.assertj.core.api.ThrowableAssertAlternative;38import org.assertj.core.api.ThrowableAssertAlternativeBaseTest;39import org.junit.jupiter.api.Test;40import static org.assertj.core.api.Assertions.assertThat;41import static org.assertj.core.api.Assertions.assertThatExceptionOfType;

withRootCauseExactlyInstanceOf

Using AI Code Generation

1import static org.assertj.core.api.Assertions.assertThat;2import static org.assertj.core.api.Assertions.within;3import static org.assertj.core.api.Assertions.fail;4import static org.assertj.core.api.Assertions.catchThrowable;5import static org.assertj.core.api.Assertions.withinPercentage;6import java.util.ArrayList;7import java.util.Arrays;8import java.util.List;9import org.junit.Test;10public class AssertJTest {11	public void testWithRootCauseExactlyInstanceOf() {12		Throwable throwable = catchThrowable(() -> {13			throw new RuntimeException("Root cause", new IllegalArgumentException("Cause"));14		});15		assertThat(throwable).withRootCauseExactlyInstanceOf(IllegalArgumentException.class);16	}17}18import static org.assertj.core.api.Assertions.assertThat;19import static org.assertj.core.api.Assertions.within;20import static org.assertj.core.api.Assertions.fail;21import static org.assertj.core.api.Assertions.catchThrowable;22import static org.assertj.core.api.Assertions.withinPercentage;23import java.util.ArrayList;24import java.util.Arrays;25import java.util.List;26import org.junit.Test;27public class AssertJTest {28	public void testWithRootCauseInstanceOf() {29		Throwable throwable = catchThrowable(() -> {30			throw new RuntimeException("Root cause", new IllegalArgumentException("Cause"));31		});32		assertThat(throwable).withRootCauseInstanceOf(RuntimeException.class);33	}34}35import static org.assertj.core.api.Assertions.assertThat;36import static org.assertj.core.api.Assertions.within;37import static org

withRootCauseExactlyInstanceOf

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.api.Assertions.withRootCauseExactlyInstanceOf;4import static org.assertj.core.api.Assertions.withRootCauseInstanceOf;5public class ThrowableAssertAlternativeTest {6    public void should_fail_with_root_cause_assertion_error() {7        Throwable throwable = new Throwable(new IllegalArgumentException("boom!"));8        Throwable thrown = catchThrowable(() -> assertThat(throwable).withRootCauseExactlyInstanceOf(IllegalArgumentException.class).withRootCauseExactlyInstanceOf(IllegalStateException.class));9        assertThat(thrown).isInstanceOf(AssertionError.class).hasMessageContaining("Expected root cause exactly instance of:").hasMessageContaining("but was instance of:").hasMessageContaining("java.lang.IllegalArgumentException");10    }11    public void should_fail_with_root_cause_assertion_error_when_no_root_cause() {12        Throwable throwable = new Throwable();13        Throwable thrown = catchThrowable(() -> assertThat(throwable).withRootCauseExactlyInstanceOf(IllegalArgumentException.class));14        assertThat(thrown).isInstanceOf(AssertionError.class).hasMessageContaining("Expected root cause exactly instance of:").hasMessageContaining("but was:").hasMessageContaining("java.lang.Throwable");15    }16    public void should_fail_with_root_cause_assertion_error_when_root_cause_is_null() {17        Throwable throwable = new Throwable(null);18        Throwable thrown = catchThrowable(() -> assertThat(throwable).withRootCauseExactlyInstanceOf(IllegalArgumentException.class));19        assertThat(thrown).isInstanceOf(AssertionError.class).hasMessageContaining("Expected root cause exactly instance of:").hasMessageContaining("but was:").hasMessageContaining("null");20    }21    public void should_pass_with_root_cause_assertion_error() {22        Throwable throwable = new Throwable(new IllegalArgumentException("boom!"));23        assertThat(throwable).withRootCauseExactlyInstanceOf(IllegalArgumentException.class);24    }25    public void should_fail_with_root_cause_assertion_error_using_withRootCauseInstanceOf() {26        Throwable throwable = new Throwable(new IllegalArgumentException("boom!"));27        Throwable thrown = catchThrowable(() -> assertThat(throwable).withRootCauseInstanceOf(IllegalArgumentException.class).withRootCauseInstanceOf(IllegalStateException.class));

withRootCauseExactlyInstanceOf

Using AI Code Generation

1import static org.assertj.core.api.Assertions.*;2import java.io.IOException;3import org.junit.Test;4public class AssertJRootCauseTest {5    public void testRootCause() {6        try {7            throw new RuntimeException(new IOException("test"));8        } catch (Exception e) {9            assertThat(e).hasRootCauseExactlyInstanceOf(IOException.class);10        }11    }12}13	at org.junit.Assert.assertEquals(Assert.java:115)14	at org.junit.Assert.assertEquals(Assert.java:144)15	at org.assertj.core.api.ThrowableAssertAlternative.hasRootCauseExactlyInstanceOf(ThrowableAssertAlternative.java:115)16	at com.baeldung.assertj.rootcause.AssertJRootCauseTest.testRootCause(AssertJRootCauseTest.java:17)17	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)18	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)19	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)20	at java.lang.reflect.Method.invoke(Method.java:498)21	at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)22	at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)23	at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)24	at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)25	at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)26	at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78)27	at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57)28	at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)29	at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)30	at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)31	at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)32	at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)33	at org.junit.runners.ParentRunner.run(ParentRunner.java:363)34	at org.junit.runner.JUnitCore.run(JUnitCore.java:137)

withRootCauseExactlyInstanceOf

Using AI Code Generation

1import static org.assertj.core.api.Assertions.withRootCauseExactlyInstanceOf;2import java.io.IOException;3import org.junit.Test;4public class AssertJWithRootCauseExactlyInstanceOfTest {5    public void test() {6        try {7            throw new IOException("test", new Exception("root cause"));8        } catch (IOException e) {9            withRootCauseExactlyInstanceOf(e, Exception.class);10        }11    }12}

withRootCauseExactlyInstanceOf

Using AI Code Generation

1import static org.assertj.core.api.Assertions.*;2import org.junit.Test;3import java.io.IOException;4public class ThrowableAssertAlternativeTest {5    public void test() {6        Throwable t = new IOException("boom");7        assertThat(t).withRootCauseExactlyInstanceOf(IOException.class);8    }9}10at org.junit.Assert.assertEquals(Assert.java:115)11at org.junit.Assert.assertEquals(Assert.java:144)12at org.assertj.core.api.ThrowableAssertAlternativeTest.test(ThrowableAssertAlternativeTest.java:12)

withRootCauseExactlyInstanceOf

Using AI Code Generation

1import static org.assertj.core.api.Assertions.*;2import org.junit.Test;3public class AssertJTest {4	public void testAssertJ() {5		Exception exception = new Exception("exception");6		Throwable throwable = new Throwable("throwable", exception);7		assertThat(throwable).hasRootCauseExactlyInstanceOf(Exception.class);8	}9}10[INFO] --- maven-surefire-plugin:2.22.1:test (default-test) @ assertj-core ---11[INFO] --- maven-jar-plugin:2.4:jar (default-jar) @ assertj-core ---12[INFO] --- maven-source-plugin:3.2.1:jar-no-fork (attach-sources) @ assertj-core ---13[INFO] --- maven-javadoc-plugin:3.2.0:jar (attach-javadocs) @ assertj-core ---14[INFO] --- maven-install-plugin:2.5.2:install (default-install) @ assertj-core ---

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