How to use assertHasCauseInstanceOf method of org.assertj.core.internal.Throwables class

Best Assertj code snippet using org.assertj.core.internal.Throwables.assertHasCauseInstanceOf

Source:Throwables_assertHasCauseInstanceOf_Test.java

...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}...

assertHasCauseInstanceOf

Using AI Code Generation

1public class AssertHasCauseInstanceOfTest {2    public void testAssertHasCauseInstanceOf() {3        Throwable cause = new Throwable("cause");4        Throwable actual = new Throwable("actual", cause);5        Throwables.assertHasCauseInstanceOf(Assertions.assertThat(actual), Throwable.class);6    }7}8package org.assertj.core.internal;9import static org.assertj.core.api.Assertions.assertThat;10import static org.assertj.core.error.ShouldHaveCause.shouldHaveCause;11import static org.assertj.core.test.TestData.someInfo;12import static org.assertj.core.util.FailureMessages.actualIsNull;13import static org.mockito.Mockito.verify;14import org.assertj.core.api.AssertionInfo;15import org.assertj.core.internal.Throwables;16import org.assertj.core.internal.ThrowablesBaseTest;17import org.junit.Test;18public class Throwables_assertHasCauseInstanceOf_Test extends ThrowablesBaseTest {19    public void should_pass_if_actual_has_cause_instance_of_expected_type() {20        throwables.assertHasCauseInstanceOf(someInfo(), new Throwable(new Exception()), Exception.class);21    }22    public void should_fail_if_actual_is_null() {23        thrown.expectAssertionError(actualIsNull());24        throwables.assertHasCauseInstanceOf(someInfo(), null, Exception.class);25    }26    public void should_fail_if_cause_is_null() {27        AssertionInfo info = someInfo();28        Throwable actual = new Throwable();29        try {30            throwables.assertHasCauseInstanceOf(info, actual, Exception.class);31        } catch (AssertionError e) {32            verify(failures).failure(info, shouldHaveCause(actual));33            return;34        }35        throw new AssertionError("AssertionError expected");36    }37    public void should_fail_if_actual_cause_is_not_instance_of_expected_type() {38        AssertionInfo info = someInfo();39        Throwable actual = new Throwable(new RuntimeException());40        try {41            throwables.assertHasCauseInstanceOf(info, actual, Exception.class);42        } catch (AssertionError e) {43            verify(failures).failure(info, shouldHaveCause(actual, actual.getCause(), Exception.class));44            return;45        }46        throw new AssertionError("AssertionError expected");47    }

assertHasCauseInstanceOf

Using AI Code Generation

1assertThatThrownBy(() -> {throw new RuntimeException("boom", new IllegalArgumentException("boom"));})2    .hasCauseInstanceOf(IllegalArgumentException.class);3assertThatThrownBy(() -> {throw new RuntimeException("boom", new IllegalArgumentException("boom"));})4    .hasCauseInstanceOf(IllegalArgumentException.class);5assertThatThrownBy(() -> {throw new RuntimeException("boom", new IllegalArgumentException("boom"));})6    .hasCauseInstanceOf(IllegalArgumentException.class);7assertThatThrownBy(() -> {throw new RuntimeException("boom", new IllegalArgumentException("boom"));})8    .hasCauseInstanceOf(IllegalArgumentException.class);9assertThatThrownBy(() -> {throw new RuntimeException("boom", new IllegalArgumentException("boom"));})10    .hasCauseInstanceOf(IllegalArgumentException.class);11assertThatThrownBy(() -> {throw new RuntimeException("boom", new IllegalArgumentException("boom"));})12    .hasCauseInstanceOf(IllegalArgumentException.class);13assertThatThrownBy(() -> {throw new RuntimeException("boom", new IllegalArgumentException("boom"));})14    .hasCauseInstanceOf(IllegalArgumentException.class);15assertThatThrownBy(() -> {throw new RuntimeException("boom", new IllegalArgumentException("boom"));})16    .hasCauseInstanceOf(IllegalArgumentException.class);17assertThatThrownBy(() -> {throw new RuntimeException("boom", new IllegalArgumentException("boom"));})18    .hasCauseInstanceOf(IllegalArgumentException.class);19assertThatThrownBy(() -> {throw new RuntimeException("boom", new IllegalArgumentException("boom"));})20    .hasCauseInstanceOf(IllegalArgumentException.class);21assertThatThrownBy(() -> {throw new RuntimeException("boom", new IllegalArgumentException("boom"));})22    .hasCauseInstanceOf(IllegalArgumentException.class);

assertHasCauseInstanceOf

Using AI Code Generation

1public void test() {2    try {3        throw new RuntimeException(new IllegalArgumentException());4    } catch (RuntimeException e) {5        assertThat(e).hasCauseInstanceOf(IllegalArgumentException.class);6    }7}8public final void assertHasCauseInstanceOf(AssertionInfo info, Throwable actual, Class<? extends Throwable> expectedType) {9    assertNotNull(info, actual);10    if (actual.getCause() == null) {11      throw failures.failure(info, shouldHaveCauseInstance(actual, expectedType));12    }13    if (!expectedType.isInstance(actual.getCause())) {14      throw failures.failure(info, shouldHaveCauseInstance(actual, expectedType));15    }16  }17public ThrowableAssert hasCauseInstanceOf(Class<? extends Throwable> expectedType) {18    throwables.assertHasCauseInstanceOf(info, actual, expectedType);19    return myself;20  }21   * assertThatExceptionOfType(NullPointerException.class).isThrownBy(() -> { throw new NullPointerException("boom!"); })22   *                                                    .withCauseInstanceOf(IllegalArgumentException.class);23   * assertThatExceptionOfType(NullPointerException.class).isThrownBy(() -> { throw new NullPointerException("boom!"); })24   *                                                    .withCauseInstanceOf(IllegalStateException.class);</code></pre>25  public SELF withCauseInstanceOf(Class<? extends Throwable> expectedType) {

assertHasCauseInstanceOf

Using AI Code Generation

1import org.assertj.core.api.ThrowableAssert;2import org.assertj.core.api.ThrowableAssertBaseTest;3import org.assertj.core.internal.Throwables;4import static org.assertj.core.api.Assertions.assertThat;5import static org.assertj.core.api.Assertions.assertThatExceptionOfType;6import static org.assertj.core.error.ShouldHaveCause.shouldHaveCause;7import static org.assertj.core.util.AssertionsUtil.expectAssertionError;8import static org.assertj.core.util.FailureMessages.actualIsNull;9import static org.mockito.Mockito.verify;10public class Throwables_assertHasCauseInstanceOf_Test extends ThrowableAssertBaseTest {11  private static final String EXPECTED_TYPE = "java.lang.IllegalStateException";12  private static final String EXPECTED_MESSAGE = "Expecting Throwable to have cause instance of:<java.lang.IllegalStateException> but was instance of:<java.lang.IllegalArgumentException>";13  protected ThrowableAssert invoke_api_method() {14    return assertions.hasCauseInstanceOf(IllegalStateException.class);15  }16  protected void verify_internal_effects() {17    verify(throwables).assertHasCauseInstanceOf(getInfo(assertions), getActual(assertions), IllegalStateException.class);18  }19  protected void verify_exception_thrown_by_api_method() {20    assertThatExceptionOfType(AssertionError.class).isThrownBy(() -> assertThat(throwException()).hasCauseInstanceOf(IllegalStateException.class))21                                                   .withMessage(EXPECTED_MESSAGE);22  }23  protected void verify_exception_thrown_by_api_method_with_message() {24    assertThatExceptionOfType(AssertionError.class).isThrownBy(() -> assertThat(throwException()).hasCauseInstanceOf(IllegalStateException.class)25                                                                                                 .withMessage(EXPECTED_MESSAGE))26                                                   .withMessage(EXPECTED_MESSAGE);27  }28  protected void verify_exception_thrown_by_api_method_with_message_and_message_args() {29    assertThatExceptionOfType(AssertionError.class).isThrownBy(() -> assertThat(throwException()).hasCauseInstanceOf(IllegalStateException.class)30                                                                                                 .withMessage(EXPECTED_TYPE))31                                                   .withMessage(EXPECTED_TYPE);32  }33  protected void verify_exception_thrown_by_api_method_with_message_complementing_description() {34    String expectedMessage = String.format("[A Test] " + EXPECTED_MESSAGE);35    assertThatExceptionOfType(AssertionError.class).isThrownBy(() -> assertThat(

assertHasCauseInstanceOf

Using AI Code Generation

1assertThatIllegalArgumentException()2    .isThrownBy(() -> { throw new IllegalArgumentException("boom"); })3    .withMessage("boom")4    .withCauseInstanceOf(IllegalArgumentException.class);5assertThatIllegalArgumentException()6    .isThrownBy(() -> { throw new IllegalArgumentException("boom"); })7    .withMessage("boom")8    .withCauseInstanceOf(IllegalArgumentException.class);9assertThatIllegalArgumentException()10    .isThrownBy(() -> { throw new IllegalArgumentException("boom"); })11    .withMessage("boom")12    .withCauseInstanceOf(IllegalArgumentException.class);13assertThatIllegalArgumentException()14    .isThrownBy(() -> { throw new IllegalArgumentException("boom"); })15    .withMessage("boom")16    .withCauseInstanceOf(IllegalArgumentException.class);17assertThatIllegalArgumentException()18    .isThrownBy(() -> { throw new IllegalArgumentException("boom"); })19    .withMessage("boom")20    .withCauseInstanceOf(IllegalArgumentException.class);21assertThatIllegalArgumentException()22    .isThrownBy(() -> { throw new IllegalArgumentException("boom"); })23    .withMessage("boom")24    .withCauseInstanceOf(IllegalArgumentException.class);25assertThatIllegalArgumentException()26    .isThrownBy(() -> { throw new IllegalArgumentException("boom"); })27    .withMessage("boom")28    .withCauseInstanceOf(IllegalArgumentException.class);29assertThatIllegalArgumentException()30    .isThrownBy(() -> { throw new IllegalArgumentException("boom"); })31    .withMessage("boom")32    .withCauseInstanceOf(IllegalArgumentException.class);33assertThatIllegalArgumentException()34    .isThrownBy(() -> { throw new IllegalArgumentException("boom"); })35    .withMessage("boom")36    .withCauseInstanceOf(IllegalArgumentException.class);37assertThatIllegalArgumentException()38    .isThrownBy(() -> { throw new IllegalArgumentException("boom"); })39    .withMessage("boom")40    .withCauseInstanceOf(IllegalArgumentException.class);41assertThatIllegalArgumentException()42    .isThrownBy(() -> { throw new IllegalArgumentException("boom"); })43    .withMessage("boom")44    .withCauseInstanceOf(IllegalArgumentException.class);45assertThatIllegalArgumentException()46    .isThrownBy(() -> { throw new IllegalArgumentException("boom"); })47    .withMessage("boom")48    .withCauseInstanceOf(IllegalArgumentException

assertHasCauseInstanceOf

Using AI Code Generation

1import org.assertj.core.api.Assertions;2import org.assertj.core.internal.Throwables;3import org.junit.jupiter.api.Test;4import java.util.function.Predicate;5import static org.assertj.core.api.Assertions.assertThat;6class AssertHasCauseInstanceOfTest {7    void shouldPassWhenCauseIsInstanceOf() {8        Throwable throwable = new Throwable(new IllegalArgumentException());9        Assertions.assertThat(throwable).hasCauseInstanceOf(IllegalArgumentException.class);10    }11    void shouldFailWhenCauseIsNotInstanceOf() {12        Throwable throwable = new Throwable(new IllegalArgumentException());13        try {14            Assertions.assertThat(throwable).hasCauseInstanceOf(RuntimeException.class);15        } catch (AssertionError e) {16            assertThat(e).hasMessage("Expecting actual's cause to be an instance of:\n"17                    + " <java.lang.IllegalArgumentException>");18            return;19        }20        Assertions.fail("AssertionError expected");21    }22    void shouldFailWhenCauseIsNull() {23        Throwable throwable = new Throwable();24        try {25            Assertions.assertThat(throwable).hasCauseInstanceOf(IllegalArgumentException.class);26        } catch (AssertionError e) {27            assertThat(e).hasMessage("Expecting actual's cause to be an instance of:\n"28                    + "but was null");29            return;30        }31        Assertions.fail("AssertionError expected");32    }33    void shouldPassWhenCauseIsInstanceOfWithPredicate() {34        Throwable throwable = new Throwable(new IllegalArgumentException());35        Assertions.assertThat(throwable).hasCauseInstanceOf(IllegalArgumentException.class, (Predicate<IllegalArgumentException>) argument -> argument.getMessage() == null);36    }37    void shouldFailWhenCauseIsNotInstanceOfWithPredicate() {

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.