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How to use isInstanceOf method of org.assertj.core.util.Throwables class

Best Assertj code snippet using org.assertj.core.util.Throwables.isInstanceOf

Source:Throwables_assertHasSuppressedException_Test.java

...55  void should_fail_if_actual_has_no_suppressed_exception_and_expected_suppressed_exception_is_not_null() {56    AssertionInfo info = someInfo();57    Throwable expectedSuppressedException = new Throwable();58    Throwable error = catchThrowable(() -> throwables.assertHasSuppressedException(info, actual, expectedSuppressedException));59    assertThat(error).isInstanceOf(AssertionError.class);60    verify(failures).failure(info, shouldHaveSuppressedException(actual, expectedSuppressedException));61  }62  @Test63  void should_fail_if_suppressed_exception_is_not_instance_of_expected_type() {64    AssertionInfo info = someInfo();65    Throwable expectedSuppressedException = new NullPointerException(IAE_EXCEPTION_MESSAGE);66    Throwable error = catchThrowable(() -> throwables.assertHasSuppressedException(info, throwableSuppressedException, expectedSuppressedException));67    assertThat(error).isInstanceOf(AssertionError.class);68    verify(failures).failure(info,69                             shouldHaveSuppressedException(throwableSuppressedException, expectedSuppressedException));70  }71  @Test72  void should_fail_if_suppressed_exception_has_not_the_expected_message() {73    AssertionInfo info = someInfo();74    Throwable expectedSuppressedException = new IllegalArgumentException(IAE_EXCEPTION_MESSAGE + "foo");75    Throwable error = catchThrowable(() -> throwables.assertHasSuppressedException(info, throwableSuppressedException, expectedSuppressedException));76    assertThat(error).isInstanceOf(AssertionError.class);77    verify(failures).failure(info,78                             shouldHaveSuppressedException(throwableSuppressedException, expectedSuppressedException));79  }80  @Test81  void should_fail_if_suppressed_exception_has_no_message_and_the_expected_suppressed_exception_has_one() {82    AssertionInfo info = someInfo();83    Throwable expectedSuppressedException = new IllegalArgumentException("error cause");84    throwableSuppressedException = new Throwable(new IllegalArgumentException());85    Throwable error = catchThrowable(() -> throwables.assertHasSuppressedException(info, throwableSuppressedException, expectedSuppressedException));86    assertThat(error).isInstanceOf(AssertionError.class);87    verify(failures).failure(info,88                             shouldHaveSuppressedException(throwableSuppressedException, expectedSuppressedException));89  }90  @Test91  void should_fail_if_suppressed_exception_has_different_type_and_message_to_expected_cause() {92    AssertionInfo info = someInfo();93    Throwable expectedSuppressedException = new NullPointerException("error cause");94    Throwable error = catchThrowable(() -> throwables.assertHasSuppressedException(info, throwableSuppressedException, expectedSuppressedException));95    assertThat(error).isInstanceOf(AssertionError.class);96    verify(failures).failure(info,97                             shouldHaveSuppressedException(throwableSuppressedException, expectedSuppressedException));98  }99}...

Source:Throwables_assertHasRootCauseExactlyInstanceOf_Test.java

...51  void should_fail_if_actual_has_no_cause() {52    AssertionInfo info = someInfo();53    Class<NullPointerException> expectedCauseType = NullPointerException.class;54    Throwable error = catchThrowable(() -> throwables.assertHasRootCauseExactlyInstanceOf(info, actual, expectedCauseType));55    assertThat(error).isInstanceOf(AssertionError.class);56    verify(failures).failure(info, shouldHaveRootCauseExactlyInstance(actual, expectedCauseType));57  }58  @Test59  void should_fail_if_root_cause_is_not_instance_of_expected_type() {60    AssertionInfo info = someInfo();61    Class<NullPointerException> expectedCauseType = NullPointerException.class;62    Throwable error = catchThrowable(() -> throwables.assertHasRootCauseExactlyInstanceOf(info, throwableWithCause, expectedCauseType));63    assertThat(error).isInstanceOf(AssertionError.class);64    verify(failures).failure(info, shouldHaveRootCauseExactlyInstance(throwableWithCause, expectedCauseType));65  }66  @Test67  void should_fail_if_cause_is_not_exactly_instance_of_expected_type() {68    AssertionInfo info = someInfo();69    Class<RuntimeException> expectedCauseType = RuntimeException.class;70    Throwable error = catchThrowable(() -> throwables.assertHasRootCauseExactlyInstanceOf(info, throwableWithCause, expectedCauseType));71    assertThat(error).isInstanceOf(AssertionError.class);72    verify(failures).failure(info, shouldHaveRootCauseExactlyInstance(throwableWithCause, expectedCauseType));73  }74}...

Source:Throwables_assertHasCauseExactlyInstanceOf_Test.java

...51  void should_fail_if_actual_has_no_cause() {52    AssertionInfo info = someInfo();53    Class<NullPointerException> expectedCauseType = NullPointerException.class;54    Throwable error = catchThrowable(() -> throwables.assertHasCauseExactlyInstanceOf(info, actual, expectedCauseType));55    assertThat(error).isInstanceOf(AssertionError.class);56    verify(failures).failure(info, shouldHaveCauseExactlyInstance(actual, expectedCauseType));57  }58  @Test59  void should_fail_if_cause_is_not_instance_of_expected_type() {60    AssertionInfo info = someInfo();61    Class<NullPointerException> expectedCauseType = NullPointerException.class;62    Throwable error = catchThrowable(() -> throwables.assertHasCauseExactlyInstanceOf(info, throwableWithCause, expectedCauseType));63    assertThat(error).isInstanceOf(AssertionError.class);64    verify(failures).failure(info, shouldHaveCauseExactlyInstance(throwableWithCause, expectedCauseType));65  }66  @Test67  void should_fail_if_cause_is_not_exactly_instance_of_expected_type() {68    AssertionInfo info = someInfo();69    Class<RuntimeException> expectedCauseType = RuntimeException.class;70    Throwable error = catchThrowable(() -> throwables.assertHasCauseExactlyInstanceOf(info, throwableWithCause, expectedCauseType));71    assertThat(error).isInstanceOf(AssertionError.class);72    verify(failures).failure(info, shouldHaveCauseExactlyInstance(throwableWithCause, expectedCauseType));73  }74}...

isInstanceOf

Using AI Code Generation

1public class Assertj {2    public static void main(String[] args) {3        try {4            throw new NullPointerException();5        }6        catch (Throwable t) {7            System.out.println(Throwables.isInstanceOf(NullPointerException.class, t));8        }9    }10}

isInstanceOf

Using AI Code Generation

1public class AssertJTest {2    public static void main(String[] args) {3        try {4            int a = 10 / 0;5        } catch (Exception ex) {6            Throwable rootCause = Throwables.getRootCause(ex);7            System.out.println("Root cause is: " + rootCause);8            boolean isInstanceOf = Throwables.isInstanceOf(ArithmeticException.class, ex);9            System.out.println("Is instance of ArithmeticException: " + isInstanceOf);10        }11    }12}

isInstanceOf

Using AI Code Generation

1import org.assertj.core.util.Throwables;2{3    public static void main (String[] args) throws java.lang.Exception4    {5        try {6            throw new Exception("test");7        } catch (Exception e) {8            System.out.println(Throwables.isInstanceOf(e, Exception.class));9        }10    }11}

isInstanceOf

Using AI Code Generation

1import org.assertj.core.util.Throwables;2import org.junit.Test;3public class TestClass {4    public void test() {5        try {6            throw new IllegalArgumentException();7        } catch (Throwable t) {8            boolean result = Throwables.isInstanceOf(IllegalArgumentException.class, t);

isInstanceOf

Using AI Code Generation

1package org.example;2import org.assertj.core.util.Throwables;3import org.junit.Test;4{5    public void shouldAnswerWithTrue()6    {7        try {8            throw new RuntimeException("test");9        } catch (Throwable e) {10            System.out.println(Throwables.isInstanceOf(e, RuntimeException.class));11        }12    }13}

isInstanceOf

Using AI Code Generation

1package org.kodejava.example.lang;2import org.assertj.core.util.Throwables;3public class AssertInstanceOfExample {4    public static void main(String[] args) {5        try {6            throw new Exception("This is an exception");7        } catch (Throwable e) {8            Throwables.assertInstanceOf(Exception.class, e);9        }10    }11}12	at org.kodejava.example.lang.AssertInstanceOfExample.main(AssertInstanceOfExample.java:11)

isInstanceOf

Using AI Code Generation

1import static org.assertj.core.util.Throwables.*;2public class 1 {3    public static void main(String[] args) {4        try {5            throw new IllegalArgumentException("Some message");6        } catch (Throwable throwable) {7            boolean isInstanceOf = isInstanceOf(IllegalArgumentException.class, throwable);8            System.out.println(isInstanceOf);9        }10    }11}12import static org.assertj.core.util.Throwables.*;13public class 2 {14    public static void main(String[] args) {15        try {16            throw new IllegalArgumentException("Some message");17        } catch (Throwable throwable) {18            boolean isInstanceOf = isInstanceOf(IllegalStateException.class, throwable);19            System.out.println(isInstanceOf);20        }21    }22}23import static org.assertj.core.util.Throwables.*;24public class 3 {25    public static void main(String[] args) {26        try {27            throw new IllegalArgumentException("Some message");28        } catch (Throwable throwable) {29            boolean isInstanceOf = isInstanceOf(IllegalArgumentException.class, throwable);30            System.out.println(isInstanceOf);31        }32    }33}34import static org.assertj.core.util.Throwables.*;35public class 4 {36    public static void main(String[] args) {37        try {38            throw new IllegalArgumentException("Some message");39        } catch (Throwable throwable) {40            boolean isInstanceOf = isInstanceOf(IllegalStateException.class, throwable);41            System.out.println(isInstanceOf);42        }43    }44}45import static org.assertj.core.util.Throwables.*;46public class 5 {47    public static void main(String[] args) {48        try {49            throw new IllegalArgumentException("Some message");50        } catch (Throwable throwable) {51            boolean isInstanceOf = isInstanceOf(IllegalArgumentException.class, throwable);52            System.out.println(isInstanceOf);53        }54    }55}56import static org.assertj.core.util.Throwables.*;57public class 6 {58    public static void main(String[] args) {

isInstanceOf

Using AI Code Generation

1package org.example;2import org.assertj.core.util.Throwables;3import org.junit.Test;4{5    public void shouldAnswerWithTrue()6    {7        try {8            throw new RuntimeException("test");9        } catch (Throwable e) {10            System.out.println(Throwables.isInstanceOf(e, RuntimeException.class));11        }12    }13}

isInstanceOf

Using AI Code Generation

1package org.kodejava.example.lang;2import org.assertj.core.util.Throwables;3public class AssertInstanceOfExample {4    public static void main(String[] args) {5        try {6            throw new Exception("This is an exception");7        } catch (Throwable e) {8            Throwables.assertInstanceOf(Exception.class, e);9        }10    }11}12	at org.kodejava.example.lang.AssertInstanceOfExample.main(AssertInstanceOfExample.java:11)

isInstanceOf

Using AI Code Generation

1assertThatThrownBy(() -> {2    throw new IOException();3}).isInstanceOf(IOException.class);4assertThatThrownBy(() -> {5    throw new IOException();6}).isInstanceOfAny(IOException.class, FileNotFoundException.class);7assertThatThrownBy(() -> {8    throw new IOException();9}).isExactlyInstanceOf(IOException.class);10assertThatThrownBy(() -> {11    throw new IOException();12}).isNotInstanceOf(IOException.class);13assertThatThrownBy(() -> {14    throw new IOException();15}).isNotExactlyInstanceOf(IOException.class);16assertThatThrownBy(() -> {17    throw new IOException("message");18}).hasMessage("message");19assertThatThrownBy(() -> {20    throw new IOException("message");21}).hasMessageContaining("mess");

isInstanceOf

Using AI Code Generation

1assertThatThrownBy(() -> {2    throw new IOException();3}).isInstanceOf(IOException.class);4assertThatThrownBy(() -> {5    throw new IOException();6}).isInstanceOfAny(IOException.class, FileNotFoundException.class);7assertThatThrownBy(() -> {8    throw new IOException();9}).isExactlyInstanceOf(IOException.class);10assertThatThrownBy(() -> {11    throw new IOException();12}).isNotInstanceOf(IOException.class);13assertThatThrownBy(() -> {14    throw new IOException();15}).isNotExactlyInstanceOf(IOException.class);16assertThatThrownBy(() -> {17    throw new IOException("message");18}).hasMessage("message");19assertThatThrownBy(() -> {20    throw new IOException("message");21}).hasMessageContaining("mess");22import static org.assertj.core.api.Assertions.assertThat;23import java.io.IOException;24public class AssertJThrowables {25    public static void main(String[] args) {26        Throwable cause = new IOException("I/O Error");27        Throwable throwable = new Throwable(cause);28        assertThat(Throwables.getRootCause(throwable)).isInstanceOf(IOException.class);29    }30}31	at org.junit.Assert.assertEquals(Assert.java:115)32	at org.junit.Assert.assertEquals(Assert.java:144)33	at org.assertj.core.api.AbstractThrowableAssert.isInstanceOf(AbstractThrowableAssert.java:113)34	at AssertJThrowables.main(1.java:11)35Recommended Posts: AssertJ | assertThatThrownBy() method36AssertJ | isInstanceOfSatisfying() method37AssertJ | isInstanceOfAny() method38AssertJ | isInstanceOfIgnoringFields() method39AssertJ | isInstanceOfComparingFieldByField() method40AssertJ | isInstanceOfComparingFieldByFieldRecursively() method41AssertJ | isInstanceOfAnyComparingFieldByField() method42AssertJ | isInstanceOfAnyComparingFieldByFieldRecursively() method43AssertJ | hasCauseInstanceOf() method44AssertJ | hasCauseInstanceOfAny() method45AssertJ | hasCauseInstanceOfIgnoringFields() method46AssertJ | hasCauseInstanceOfComparingFieldByField() method47AssertJ | hasCauseInstanceOfComparingFieldByFieldRecursively() method48AssertJ | hasCauseInstanceOfAnyComparingFieldByField() method49AssertJ | hasCauseInstanceOfAnyComparingFieldByFieldRecursively() method50AssertJ | hasRootCauseInstanceOf() method51AssertJ | hasRootCauseInstanceOfAny() method52AssertJ | hasRootCauseInstanceOfIgnoringFields() method53AssertJ | hasRootCauseInstanceOfComparingFieldByField() method

isInstanceOf

Using AI Code Generation

1public class AssertjExample1 {2    public static void main(String[] args) {3      Throwable t = new Throwable("error");4      System.out.println("Is Throwable instance of Throwable: " + Throwables.instanceOf(t, Throwable.class));5      System.out.println("Is Throwable instance of Exception: " + Throwables.instanceOf(t, Exception.class));6      System.out.println("Is Throwable instance of RuntimeException: " + Throwables.instanceOf(t, RuntimeException.class));7    }8}

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