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

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

Source:Throwables_assertHasCauseInstanceOf_Test.java

...12 */13package org.assertj.core.internal.throwables;14import org.assertj.core.api.AssertionInfo;15import org.assertj.core.api.Assertions;16import org.assertj.core.error.ShouldHaveCauseInstance;17import org.assertj.core.internal.ThrowablesBaseTest;18import org.assertj.core.test.TestData;19import org.assertj.core.test.TestFailures;20import org.assertj.core.util.FailureMessages;21import org.junit.jupiter.api.Test;22import org.mockito.Mockito;23/**24 * Tests for25 * {@link org.assertj.core.internal.Throwables#assertHasCauseInstanceOf(org.assertj.core.api.AssertionInfo, Throwable, Class)}26 * .27 *28 * @author Jean-Christophe Gay29 */30public class Throwables_assertHasCauseInstanceOf_Test extends ThrowablesBaseTest {31    private Throwable throwableWithCause = new Throwable(new IllegalArgumentException());32    @Test33    public void should_pass_if_cause_is_exactly_instance_of_expected_type() {34        throwables.assertHasCauseInstanceOf(TestData.someInfo(), throwableWithCause, IllegalArgumentException.class);35    }36    @Test37    public void should_pass_if_cause_is_instance_of_expected_type() {38        throwables.assertHasCauseInstanceOf(TestData.someInfo(), throwableWithCause, RuntimeException.class);39    }40    @Test41    public void should_fail_if_actual_is_null() {42        Assertions.assertThatExceptionOfType(AssertionError.class).isThrownBy(() -> throwables.assertHasCauseInstanceOf(someInfo(), null, .class)).withMessage(FailureMessages.actualIsNull());43    }44    @Test45    public void should_throw_NullPointerException_if_given_type_is_null() {46        Assertions.assertThatNullPointerException().isThrownBy(() -> throwables.assertHasCauseInstanceOf(someInfo(), throwableWithCause, null)).withMessage("The given type should not be null");47    }48    @Test49    public void should_fail_if_actual_has_no_cause() {50        AssertionInfo info = TestData.someInfo();51        Class<NullPointerException> expectedCauseType = NullPointerException.class;52        try {53            throwables.assertHasCauseInstanceOf(info, ThrowablesBaseTest.actual, expectedCauseType);54        } catch (AssertionError err) {55            Mockito.verify(failures).failure(info, ShouldHaveCauseInstance.shouldHaveCauseInstance(ThrowablesBaseTest.actual, expectedCauseType));56            return;57        }58        TestFailures.failBecauseExpectedAssertionErrorWasNotThrown();59    }60    @Test61    public void should_fail_if_cause_is_not_instance_of_expected_type() {62        AssertionInfo info = TestData.someInfo();63        Class<NullPointerException> expectedCauseType = NullPointerException.class;64        try {65            throwables.assertHasCauseInstanceOf(info, throwableWithCause, expectedCauseType);66        } catch (AssertionError err) {67            Mockito.verify(failures).failure(info, ShouldHaveCauseInstance.shouldHaveCauseInstance(throwableWithCause, expectedCauseType));68            return;69        }70        TestFailures.failBecauseExpectedAssertionErrorWasNotThrown();71    }72}...

Source:ShouldHaveCauseInstance.java

...18 * a certain type.19 * 20 * @author Jean-Christophe Gay21 */22public class ShouldHaveCauseInstance extends BasicErrorMessageFactory {23  /**24   * Creates a new <code>{@link org.assertj.core.error.BasicErrorMessageFactory}</code>.25   * 26   * @param actual the actual value in the failed assertion.27   * @param expectedCauseType the expected cause type.28   * @return the created {@code ErrorMessageFactory}.29   */30  public static ErrorMessageFactory shouldHaveCauseInstance(Throwable actual,31                                                            Class<? extends Throwable> expectedCauseType) {32    return actual.getCause() == null33        ? new ShouldHaveCauseInstance(expectedCauseType)34        : new ShouldHaveCauseInstance(actual, expectedCauseType);35  }36  private ShouldHaveCauseInstance(Throwable actual, Class<? extends Throwable> expectedCauseType) {37    super("%nExpecting a throwable with cause being an instance of:%n" +38          "  %s%n" +39          "but was an instance of:%n" +40          "  %s%n" +41          "Throwable that failed the check:%n" +42          "%n" + escapePercent(getStackTrace(actual)),43          expectedCauseType, actual.getCause().getClass());44  }45  private ShouldHaveCauseInstance(Class<? extends Throwable> expectedCauseType) {46    super("%nExpecting a throwable with cause being an instance of:%n" +47          "  %s%n" +48          "but current throwable has no cause.",49          expectedCauseType);50  }51}...

ShouldHaveCauseInstance

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.ShouldHaveCauseInstance.shouldHaveCauseInstance;4import static org.assertj.core.util.Throwables.getStackTrace;5public class AssertJTest {6   public static void main(String[] args) {7      Throwable throwable = catchThrowable(() -> {8         throw new IllegalArgumentException("Illegal argument", new IllegalStateException("Illegal state"));9      });10      Throwable cause = throwable.getCause();11      assertThat(cause).overridingErrorMessage(12         shouldHaveCauseInstance(throwable, IllegalStateException.class, getStackTrace(cause)).create())13         .isInstanceOf(IllegalStateException.class);14   }15}16	at org.assertj.core.api.Assertions.assertThat(Assertions.java:114)17	at org.assertj.core.api.Assertions.assertThat(Assertions

ShouldHaveCauseInstance

Using AI Code Generation

1import org.assertj.core.error.ShouldHaveCauseInstance;2import org.assertj.core.internal.TestDescription;3import org.assertj.core.presentation.StandardRepresentation;4import org.junit.Test;5import static org.assertj.core.api.Assertions.assertThatThrownBy;6import static org.assertj.core.api.Assertions.assertThat;7import static org.assertj.core.api.Assertions.assertThatExceptionOfType;8public class AssertJTest {9    public void testAssertJ() {10        assertThatThrownBy(() -> {11            throw new RuntimeException(new IllegalArgumentException("test"));12        }).isInstanceOf(RuntimeException.class).hasCauseInstanceOf(IllegalArgumentException.class).hasMessageContaining("test");13    }14}15	at org.junit.Assert.assertEquals(Assert.java:115)16	at org.junit.Assert.assertEquals(Assert.java:144)17	at AssertJTest.testAssertJ(AssertJTest.java:17)

ShouldHaveCauseInstance

Using AI Code Generation

1import org.assertj.core.error.ShouldHaveCauseInstance;2import org.assertj.core.error.ErrorMessageFactory;3import org.assertj.core.error.BasicErrorMessageFactory;4import org.assertj.core.description.Description;5import org.assertj.core.description.TextDescription;6import org.assertj.core.api.AssertionInfo;7import org.assertj.core.api.Assertions;8import org.assertj.core.util.VisibleForTesting;9import org.assertj.core.internal.Failures;10import org.assertj.core.internal.Objects;11import org.assertj.core.internal.StandardComparisonStrategy;12import org.assertj.core.internal.ComparisonStrategy;13import org.assertj.core.internal.ObjectArrays;14import org.assertj.core.internal.ErrorMessages;15import org.assertj.core.internal.ObjectArraysBaseTest;16import java.util.List;17import java.util.ArrayList;18import java.util.Arrays;19import java.util.Objects;20import java.util.Optional;21import java.util.OptionalInt;22import java.util.OptionalDouble;23import java.util.OptionalLong;24import java.util.function.Supplier;25import java.util.stream.Stream;26import java.util.stream.IntStream;27import java.util.stream.DoubleStream;28import java.util.stream.LongStream;29import java.util.stream.Collectors;30import java.util.stream.Collector;31import java.util.stream.Collector.Characteristics;32import java.util.Optional;33import java.util.OptionalInt;34import java.util.OptionalDouble;35import java.util.OptionalLong;36import java.util.function.Supplier;37import java.util.function.Function;38import java.util.function.BiFunction;39import java.util.function.BiConsumer;40import java.util.function.Consumer;41import java.util.function.Predicate;42import java.util.function.IntPredicate;43import java.util.function.DoublePredicate;44import java.util.function.LongPredicate;45import java.util.function.IntFunction;46import java.util.function.DoubleFunction;47import java.util.function.LongFunction;48import java.util.function.ToIntFunction;49import java.util.function.ToDoubleFunction;50import java.util.function.ToLongFunction;51import java.util.function.IntToDoubleFunction;52import java.util.function.IntToLongFunction;53import java.util.function.DoubleToIntFunction;54import java.util.function.DoubleToLongFunction;55import java.util.function.LongToIntFunction;56import java.util.function.LongToDoubleFunction;57import java.util.function.UnaryOperator;58import java.util.function.BinaryOperator;59import java.util.function.IntUnaryOperator;60import java.util.function.IntBinaryOperator;61import java.util.function.DoubleUnaryOperator;62import java.util.function.DoubleBinaryOperator;63import java.util.function.LongUnaryOperator;64import java.util.function.LongBinaryOperator;65import java.util.function.BiPredicate;66import java.util.function.IntBiPredicate;67import java.util.function.DoubleBiPredicate;68import java.util.function

ShouldHaveCauseInstance

Using AI Code Generation

1import org.assertj.core.api.Assertions;2import org.assertj.core.error.ShouldHaveCauseInstance;3import org.assertj.core.internal.TestDescription;4import org.assertj.core.presentation.StandardRepresentation;5public class AssertjError {6    public static void main(String[] args) {7        try {8            throw new RuntimeException("Error");9        } catch (Exception e) {10            ShouldHaveCauseInstance shouldHaveCauseInstance = new ShouldHaveCauseInstance(new TestDescription("Test"), new StandardRepresentation(), e, "Exception");11            System.out.println(shouldHaveCauseInstance.create());12        }13    }14}15	at 1.main(1.java:12)

ShouldHaveCauseInstance

Using AI Code Generation

1import org.assertj.core.error.ShouldHaveCauseInstance;2public class AssertJTest {3    public static void main(String[] args) {4        try {5            int a = 10 / 0;6        } catch (ArithmeticException e) {7            System.out.println(ShouldHaveCauseInstance.shouldHaveCauseInstance(e, Exception.class));8        }9    }10}11Recommended Posts: Java | AssertJ - shouldHaveCauseInstanceOf()12Java | AssertJ - shouldHaveCause()13Java | AssertJ - shouldHaveMessageContaining()14Java | AssertJ - shouldHaveMessage()15Java | AssertJ - shouldHaveCause()16Java | AssertJ - shouldHaveCauseInstanceOf()17Java | AssertJ - shouldHaveNoCause()18Java | AssertJ - shouldHaveRootCause()19Java | AssertJ - shouldHaveRootCauseInstanceOf()20Java | AssertJ - shouldHaveRootCauseMessage()21Java | AssertJ - shouldHaveRootCauseMessageContaining()22Java | AssertJ - shouldHaveRootCauseMessageMatching()23Java | AssertJ - shouldHaveNoRootCause()24Java | AssertJ - shouldHaveCauseExactlyInstanceOf()25Java | AssertJ - shouldHaveCauseExactlyInstanceOf()

ShouldHaveCauseInstance

Using AI Code Generation

1import org.assertj.core.api.*;2import org.assertj.core.error.*;3import org.assertj.core.internal.*;4import org.assertj.core.description.*;5import org.assertj.core.util.*;6import org.assertj.core.presentation.*;7import org.assertj.core.api.Assertions.*;8import org.assertj.core.api.ObjectAssert.*;9import org.assertj.core.api.ThrowableAssert.*;10import org.assertj.core.api.ThrowableAssert.ThrowingCallable.*;11import org.assertj.core.api.ThrowableAssert.ThrowingCallable;12import org.assertj.core.api.AbstractThrowableAssert.*;13import java.lang.Throwable;14import java.lang.Object;15import java.lang.String;16import java.lang.AssertionError;17import org.assertj.core.api.AbstractAssert.*;18import org.assertj.core.api.AbstractAssert;19import java.lang.AssertionError;20import java.lang.AssertionError;21import static org.assertj.core.api.Assertions.*;22public class 1 {23    public static void main(String[] args) {24        try {25            throw new AssertionError("error");26        } catch (AssertionError e) {27            throw new AssertionError("error");28        }29    }30}31	at 1.main(1.java:30)

ShouldHaveCauseInstance

Using AI Code Generation

1public class 1 {2    public static void main(String[] args) {3        try {4            throw new Exception("exception");5        } catch (Exception e) {6            throw new AssertionError(ShouldHaveCauseInstance.shouldHaveCauseInstance(e, new Exception()).create());7        }8    }9}

ShouldHaveCauseInstance

Using AI Code Generation

1package org.example;2import static org.assertj.core.api.Assertions.assertThat;3import java.io.IOException;4public class AssertjTest {5    public static void main(String[] args) {6        try {7            throw new IOException("IO Exception");8        } catch (IOException e) {9            assertThat(e).hasCauseInstanceOf(NullPointerException.class);10        }11    }12}

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