Join the 1-day Testing & QA Summit featuring 15+ Expert Speakers.Register for FREE! Join TestMu Conference

How to use isInstanceOf method of org.assertj.core.api.AbstractIterableAssert class

Best Assertj code snippet using org.assertj.core.api.AbstractIterableAssert.isInstanceOf

Source:AssertJPromiseAssert.java

...68         * @return A {@link AbstractMapAssert} instance for making assertions on the value.69         */70        @SuppressWarnings("unchecked")71        public <K, V> AbstractMapAssert<?, ? extends Map<K, V>, K, V> withMap() {72            isInstanceOf(Map.class);73            return Assertions.assertThat((Map<K, V>) actual);74        }75        /**76         * Asserts that the value was a {@link Iterable} instance.77         * @param <T> The iterable contents type.78         * @return A {@link AbstractIterableAssert} instance for making assertions on the value.79         */80        @SuppressWarnings("unchecked")81        public <T> AbstractIterableAssert<?, ? extends Iterable<? extends T>, T> withIterable() {82            isInstanceOf(Iterable.class);83            return Assertions.assertThat((Iterable<T>) actual);84        }85        /**86         * Asserts that the value was a {@link List} instance.87         *88         * @param <T> The list contents type.89         * @return A {@link AbstractListAssert} instance for making assertions on the value.90         */91        @SuppressWarnings("unchecked")92        public <T> AbstractListAssert<?, ? extends List<? extends T>, T> withList() {93            isInstanceOf(List.class);94            return Assertions.assertThat((List<T>) actual);95        }96        /**97         * Asserts that the value was a {@link String} instance.98         * @return A {@link AbstractCharSequenceAssert} instance for making assertions on the value.99         */100        public AbstractCharSequenceAssert<?, String> withString() {101            isInstanceOf(String.class);102            return Assertions.assertThat((String) actual);103        }104        /**105         * Asserts that the value was a {@link InputStream} instance.106         * @return A {@link AbstractInputStreamAssert} instance for making assertions on the value.107         */108        public AbstractInputStreamAssert<?, ? extends InputStream> withInputStream() {109            isInstanceOf(InputStream.class);110            return Assertions.assertThat((InputStream) actual);111        }112        /**113         * Asserts that the value was a {@link File} instance.114         * @return A {@link AbstractFileAssert} instance for making assertions on the value.115         */116        public AbstractFileAssert<?> withFile() {117            isInstanceOf(File.class);118            return Assertions.assertThat((File) actual);119        }120        /**121         * Asserts that the value was a {@link Integer} instance.122         * @return A {@link AbstractIntegerAssert} instance for making assertions on the value.123         */124        public AbstractIntegerAssert<?> withInteger() {125            isInstanceOf(Integer.class);126            return Assertions.assertThat((Integer) actual);127        }128        /**129         * Asserts that the value was a {@link Boolean} instance.130         * @return A {@link AbstractBooleanAssert} instance for making assertions on the value.131         */132        public AbstractBooleanAssert<?> withBoolean() {133            isInstanceOf(Boolean.class);134            return Assertions.assertThat((Boolean) actual);135        }136        /**137         * Asserts that the value was a {@link Long} instance.138         * @return A {@link AbstractLongAssert} instance for making assertions on the value.139         */140        public AbstractLongAssert<?> withLong() {141            isInstanceOf(Long.class);142            return Assertions.assertThat((Long) actual);143        }144        /**145         * Asserts that the value was a {@link Double} instance.146         * @return A {@link AbstractDoubleAssert} instance for making assertions on the value.147         */148        public AbstractDoubleAssert<?> withDouble() {149            isInstanceOf(Double.class);150            return Assertions.assertThat((Double) actual);151        }152        /**153         * Asserts that the value was an instance of type {@code T}.154         * @param <T> The type of the expected object.155         * @return A {@link AbstractObjectAssert} instance for making assertions on the value.156         */157        @SuppressWarnings("unchecked")158        public <T> AbstractObjectAssert<?, T> withObject() {159            return Assertions.assertThat((T) actual);160        }161        /**162         * Asserts that the value was an array of type {@code T}.163         * @param <T> The type of the expected array....

isInstanceOf

Using AI Code Generation

1import static org.assertj.core.api.Assertions.assertThat;2import static org.assertj.core.api.Assertions.assertThatThrownBy;3import java.util.Arrays;4import java.util.List;5import org.junit.Test;6public class AssertJInstanceOfTest {7    public void whenInstanceOf_thenCorrect() {8        List<Integer> numbers = Arrays.asList(1, 2, 3);9        assertThat(numbers).isInstanceOf(List.class);10        assertThat(numbers).isInstanceOfAny(List.class, String.class);11        assertThat(numbers).isOfAnyClassIn(List.class, String.class);12    }13    public void whenNotInstanceOf_thenCorrect() {14        List<Integer> numbers = Arrays.asList(1, 2, 3);15        assertThatThrownBy(() -> assertThat(numbers).isInstanceOf(String.class))16          .hasMessageContaining("expected instance of")17          .hasMessageContaining("but was instance of");18    }19    public void whenNotInstanceOfAny_thenCorrect() {20        List<Integer> numbers = Arrays.asList(1, 2, 3);21        assertThatThrownBy(() -> assertThat(numbers).isInstanceOfAny(String.class, Integer.class))22          .hasMessageContaining("expected instance of")23          .hasMessageContaining("but was instance of");24    }25    public void whenNotOfAnyClassIn_thenCorrect() {26        List<Integer> numbers = Arrays.asList(1, 2, 3);27        assertThatThrownBy(() -> assertThat(numbers).isOfAnyClassIn(String.class, Integer.class))28          .hasMessageContaining("expected instance of")29          .hasMessageContaining("but was instance of");30    }31}

isInstanceOf

Using AI Code Generation

1import static org.assertj.core.api.Assertions.assertThat;2import static org.assertj.core.util.Lists.newArrayList;3import java.util.List;4import org.junit.Test;5public class AssertJTest {6	public void testAssertJ() {7		List<String> list = newArrayList("a", "b", "c");8		assertThat(list).contains("a", "b", "c").doesNotContain("d", "e");9		assertThat(list).hasSize(3).containsOnly("a", "b", "c");10		assertThat(list).contains("a", "b", "c").doesNotContain("d", "e").hasSize(3).containsOnly("a", "b", "c");11	}12}

isInstanceOf

Using AI Code Generation

1assertThat(Arrays.asList("foo", "bar")).isInstanceOf(List.class);2assertThat(Arrays.asList("foo", "bar")).isInstanceOfAny(List.class, Queue.class);3assertThat(Arrays.asList("foo", "bar")).isNotInstanceOf(Set.class);4assertThat(Arrays.asList("foo", "bar")).isInstanceOfAny(List.class, Queue.class);5assertThat(Arrays.asList("foo", "bar")).isNotInstanceOfAny(Set.class, Queue.class);6assertThat(new Object()).isInstanceOf(Object.class);7assertThat(new Object()).isNotInstanceOf(String.class);8assertThat(new Object()).isInstanceOfAny(Object.class, String.class);9assertThat(new Object()).isNotInstanceOfAny(String.class, Integer.class);10assertThat(new Object()).isNotInstanceOfAny(String.class, Integer.class);11assertThat(new Object()).isInstanceOf(Object.class);12assertThat(new Object()).isNotInstanceOf(String.class);13assertThat(new Object()).isInstanceOfAny(Object.class, String.class);14assertThat(new Object()).isNotInstanceOfAny(String.class, Integer.class);15assertThat(new Object()).isNotInstanceOfAny(String.class, Integer.class);16assertThat(new Object()).isNotInstanceOfAny(String.class, Integer.class);17assertThat(new Object()).isInstanceOf(Object.class);18assertThat(new Object()).isNotInstanceOf(String.class);19assertThat(new Object()).isInstanceOfAny(Object.class, String.class);20assertThat(new Object()).isNotInstanceOfAny(S

isInstanceOf

Using AI Code Generation

1import org.assertj.core.api.Assertions.assertThat2import org.junit.Test3class AssertJTest {4    fun testAssertJ() {5        val list = listOf(1, 2, 3)6        assertThat(list).isInstanceOf(List::class.java)7    }8}

isInstanceOf

Using AI Code Generation

1package org.example;2import org.junit.jupiter.api.Test;3import java.util.Arrays;4import static org.assertj.core.api.Assertions.assertThat;5class AssertjIsInstanceOfTest {6    void testIsInstanceOf() {7        assertThat(Arrays.asList("one", "two", "three")).isInstanceOf(Iterable.class);8    }9}10at org.example.AssertjIsInstanceOfTest.testIsInstanceOf(AssertjIsInstanceOfTest.java:11)

isInstanceOf

Using AI Code Generation

1assertThat(list).isInstanceOf(List.class);2assertThat(list).isInstanceOf(ArrayList.class);3assertThat(list).isInstanceOf(ArrayList.class).isInstanceOf(List.class);4assertThat(list).isInstanceOf(ArrayList.class).isInstanceOf(List.class).isInstanceOf(Object.class);5assertThat(list).isNotInstanceOf(String.class);6assertThat(list).isInstanceOfAny(List.class, String.class);7assertThat(list).isInstanceOfAny(List.class, String.class, Object.class);8assertThat(list).isNotInstanceOfAny(String.class, Integer.class);9assertThat(list).isInstanceOfExactly(ArrayList.class);10assertThat(list).isInstanceOfExactly(ArrayList.class).isInstanceOfExactly(List.class);11assertThat(list).isInstanceOfExactly(ArrayList.class).isInstanceOfExactly(List.class).isInstanceOfExactly(Object.class);12assertThat(list).isNotInstanceOfExactly(String.class);13assertThat(list).isExactlyInstanceOf(ArrayList.class);14assertThat(list).isExactlyInstanceOf(ArrayList.class).isExactlyInstanceOf(List.class);15assertThat(list).isExactlyInstanceOf(ArrayList.class).isExactlyInstanceOf(List.class).isExactlyInstanceOf(Object.class);16assertThat(list).isNotExactlyInstanceOf(String.class);17assertThat(list).isOfAnyClassIn(List.class, String.class

isInstanceOf

Using AI Code Generation

1import static org.assertj.core.api.Assertions.assertThat;2public class AssertJInstanceOfExample {3    public static void main(String[] args) {4        List<Object> list = Arrays.asList("a", "b", 1, 2, 3);5        assertThat(list).isInstanceOf(List.class);6        assertThat(list).isInstanceOfAny(List.class, String.class);7        assertThat(list).isInstanceOfAny(List.class, String.class, Integer.class);8        assertThat(list).isInstanceOfAny(List.class, String.class, Integer.class, Object.class);9        assertThat(list).isNotInstanceOf(String.class);10        assertThat(list).isNotInstanceOfAny(String.class, Integer.class);11        assertThat(list).isNotInstanceOfAny(String.class, Integer.class, Object.class);12    }13}14	at AssertJInstanceOfExample.main(AssertJInstanceOfExample.java:16)15	at AssertJInstanceOfExample.main(AssertJInstanceOfExample.java:20)16	at AssertJInstanceOfExample.main(AssertJInstanceOfEx

isInstanceOf

Using AI Code Generation

1import org.junit.jupiter.api.Test;2import static org.assertj.core.api.Assertions.*;3import java.util.ArrayList;4import java.util.Arrays;5import java.util.List;6public class IsInstanceOfTest {7    public void testIsInstanceOf() {8        List<Object> list = new ArrayList<>(Arrays.asList(1, 2, 3, 4, 5, "one", "two", "three"));9        assertThat(list).isInstanceOf(List.class)10                .isInstanceOf(ArrayList.class)11                .isInstanceOfAny(List.class, String.class)12                .isInstanceOfAny(List.class, Integer.class)13                .isNotInstanceOf(String.class)14                .isNotInstanceOfAny(String.class, Integer.class);15    }16}17at org.junit.jupiter.engine.execution.ExecutableInvoker.resolveParameter(ExecutableInvoker.java:200)18at org.junit.jupiter.engine.execution.ExecutableInvoker.resolveParameters(ExecutableInvoker.java:183)19at org.junit.jupiter.engine.execution.ExecutableInvoker.invoke(ExecutableInvoker.java:74)20at org.junit.jupiter.engine.descriptor.ClassBasedTestDescriptor.invokeTestClassConstructor(ClassBasedTestDescriptor.java:342)21at org.junit.jupiter.engine.descriptor.ClassBasedTestDescriptor.instantiateTestClass(ClassBasedTestDescriptor.java:289)22at org.junit.jupiter.engine.descriptor.ClassTestDescriptor.instantiateTestClass(ClassTestDescriptor.java:79)23at org.junit.jupiter.engine.descriptor.ClassBasedTestDescriptor.instantiateAndPostProcessTestInstance(ClassBasedTestDescriptor.java:267)24at org.junit.jupiter.engine.descriptor.ClassBasedTestDescriptor.lambda$testInstancesProvider$2(ClassBasedTestDescriptor.java:259)25at java.util.Optional.orElseGet(Optional.java:267)26at org.junit.jupiter.engine.descriptor.ClassBasedTestDescriptor.lambda$testInstancesProvider$3(ClassBasedTestDescriptor.java:258)27at org.junit.jupiter.engine.execution.TestInstancesProvider.getTestInstances(TestInstancesProvider.java:31)28at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.lambda$prepare$0(TestMethodTestDescriptor.java:101)29at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)

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.