Best Assertj code snippet using org.assertj.core.api.AbstractCollectionAssert.emptyCollection
Source: AbstractCollectionAssert.java
...78 // immutable by contract, although not all methods throw UnsupportedOperationException79 return;80 }81 expectUnsupportedOperationException(() -> actual.add(null), "Collection.add(null)");82 expectUnsupportedOperationException(() -> actual.addAll(emptyCollection()), "Collection.addAll(emptyCollection())");83 expectUnsupportedOperationException(() -> actual.clear(), "Collection.clear()");84 expectUnsupportedOperationException(() -> actual.iterator().remove(), "Collection.iterator().remove()");85 expectUnsupportedOperationException(() -> actual.remove(null), "Collection.remove(null)");86 expectUnsupportedOperationException(() -> actual.removeAll(emptyCollection()), "Collection.removeAll(emptyCollection())");87 expectUnsupportedOperationException(() -> actual.removeIf(element -> true), "Collection.removeIf(element -> true)");88 expectUnsupportedOperationException(() -> actual.retainAll(emptyCollection()), "Collection.retainAll(emptyCollection())");89 if (actual instanceof List) {90 List<ELEMENT> list = (List<ELEMENT>) actual;91 expectUnsupportedOperationException(() -> list.add(0, null), "List.add(0, null)");92 expectUnsupportedOperationException(() -> list.addAll(0, emptyCollection()), "List.addAll(0, emptyCollection())");93 expectUnsupportedOperationException(() -> list.listIterator().add(null), "List.listIterator().add(null)");94 expectUnsupportedOperationException(() -> list.listIterator().remove(), "List.listIterator().remove()");95 expectUnsupportedOperationException(() -> list.listIterator().set(null), "List.listIterator().set(null)");96 expectUnsupportedOperationException(() -> list.remove(0), "List.remove(0)");97 expectUnsupportedOperationException(() -> list.replaceAll(identity()), "List.replaceAll(identity())");98 expectUnsupportedOperationException(() -> list.set(0, null), "List.set(0, null)");99 expectUnsupportedOperationException(() -> list.sort((o1, o2) -> 0), "List.sort((o1, o2) -> 0)");100 }101 if (actual instanceof NavigableSet) {102 NavigableSet<ELEMENT> set = (NavigableSet<ELEMENT>) actual;103 expectUnsupportedOperationException(() -> set.descendingIterator().remove(), "NavigableSet.descendingIterator().remove()");104 expectUnsupportedOperationException(() -> set.pollFirst(), "NavigableSet.pollFirst()");105 expectUnsupportedOperationException(() -> set.pollLast(), "NavigableSet.pollLast()");106 }107 }108 private void expectUnsupportedOperationException(Runnable runnable, String method) {109 try {110 runnable.run();111 throwAssertionError(shouldBeUnmodifiable(method));112 } catch (UnsupportedOperationException e) {113 // happy path114 } catch (RuntimeException e) {115 throwAssertionError(shouldBeUnmodifiable(method, e));116 }117 }118 private <E extends ELEMENT> Collection<E> emptyCollection() {119 return Collections.emptyList();120 }121}...
emptyCollection
Using AI Code Generation
1import org.assertj.core.api.Assertions;2import java.util.ArrayList;3import java.util.Collection;4public class AssertJEmptyCollectionExample {5 public static void main(String[] args) {6 Collection<String> collection = new ArrayList<>();7 Assertions.assertThat(collection).isEmpty();8 collection.add("foo");9 Assertions.assertThat(collection).isNotEmpty();10 }11}
emptyCollection
Using AI Code Generation
1import java.util.Arrays;2import java.util.List;3import static org.assertj.core.api.Assertions.*;4public class AssertJEmptyCollectionExample {5 public static void main(String[] args) {6 List<Integer> list = Arrays.asList(1, 2, 3);7 assertThat(list).isNotEmpty();8 assertThat(list).hasSize(3);9 assertThat(list).contains(1, 2, 3);10 assertThat(list).containsExactly(1, 2, 3);11 assertThat(list).doesNotContain(4);12 assertThat(list).doesNotContain(5, 6);13 assertThat(list).containsAnyOf(1, 4);14 assertThat(list).containsExactlyInAnyOrder(3, 2, 1);15 assertThat(list).containsExactlyInAnyOrder(1, 2, 3);16 assertThat(list).containsExactlyInAnyOrder(2, 1, 3);17 assertThat(list).containsExactlyInAnyOrder(2, 3, 1);18 assertThat(list).containsExactlyInAnyOrder(3, 1, 2);19 assertThat(list).containsExactlyInAnyOrder(3, 2, 1);20 assertThat(list).containsAll(Arrays.asList(1, 2, 3));21 assertThat(list).containsAll(Arrays.asList(2, 1, 3));22 assertThat(list).containsAll(Arrays.asList(2, 3, 1));23 assertThat(list).containsAll(Arrays.asList(3, 1, 2));24 assertThat(list).containsAll(Arrays.asList(3, 2, 1));25 assertThat(list).containsAll(Arrays.asList(1, 3, 2));26 assertThat(list).doesNotContainAnyElementsOf(Arrays.asList(4, 5, 6));27 assertThat(list).containsAnyElementsOf(Arrays.asList(1, 4, 5));28 assertThat(list).containsAnyElementsOf(Arrays.asList(4, 5, 1));29 assertThat(list).containsAnyElementsOf(Arrays.asList(4, 1, 5));30 assertThat(list).containsAnyElementsOf(Arrays.asList(5, 4, 1));31 assertThat(list).containsAnyElementsOf(Arrays.asList(5, 1, 4));32 assertThat(list).containsAnyElementsOf(Arrays.asList(1, 5, 4));33 assertThat(list).containsAnyElementsOf(Arrays.asList(1, 2, 3,
emptyCollection
Using AI Code Generation
1import org.assertj.core.api.Assertions;2import java.util.ArrayList;3import java.util.List;4public class CollectionAssertEmptyTest {5 public static void main(String[] args) {6 List<String> list = new ArrayList<>();7 list.add("one");8 list.add("two");9 list.add("three");10 Assertions.assertThat(list).isNotEmpty();11 Assertions.assertThat(list).isNotEmpty().hasSize(3);12 Assertions.assertThat(list).isNotEmpty().hasSizeGreaterThan(2);13 Assertions.assertThat(list).isNotEmpty().hasSizeLessThan(4);14 Assertions.assertThat(list).isNotEmpty().hasSizeGreaterThanOrEqualTo(3);15 Assertions.assertThat(list).isNotEmpty().hasSizeLessThanOrEqualTo(3);16 list.clear();17 Assertions.assertThat(list).isEmpty();18 Assertions.assertThat(list).isEmpty().hasSize(0);19 Assertions.assertThat(list).isEmpty().hasSizeGreaterThan(-1);20 Assertions.assertThat(list).isEmpty().hasSizeLessThan(1);21 Assertions.assertThat(list).isEmpty().hasSizeGreaterThanOrEqualTo(0);22 Assertions.assertThat(list).isEmpty().hasSizeLessThanOrEqualTo(0);23 }24}25 at org.assertj.core.api.AbstractCollectionAssert.isEmpty(AbstractCollectionAssert.java:158)26 at CollectionAssertEmptyTest.main(CollectionAssertEmptyTest.java:34)27 at org.assertj.core.api.AbstractIntegerAssert.isLessThan(AbstractIntegerAssert.java:249)28 at CollectionAssertEmptyTest.main(CollectionAssertEmptyTest.java:35)29 at org.assertj.core.api.AbstractIntegerAssert.isGreaterThan(AbstractIntegerAssert.java:238)30 at CollectionAssertEmptyTest.main(CollectionAssertEmptyTest.java:36)31 at org.assertj.core.api.AbstractIntegerAssert.isLessThanOrEqualTo(AbstractIntegerAssert.java:268)32 at CollectionAssertEmptyTest.main(CollectionAssertEmptyTest.java:37)33 at org.assertj.core.api.AbstractIntegerAssert.isGreaterThanOrEqualTo(AbstractIntegerAssert.java:
emptyCollection
Using AI Code Generation
1assertThat(new ArrayList<>()).isEmpty();2assertThat(new ArrayList<>()).isNotEmpty();3assertThat(new ArrayList<>()).isNullOrEmpty();4assertThat(new ArrayList<>()).isNotNullOrEmpty();5assertThat(new ArrayList<>()).hasSize(5);6assertThat(new ArrayList<>()).hasSizeLessThan(5);7assertThat(new ArrayList<>()).hasSizeLessThanOrEqualTo(5);8assertThat(new ArrayList<>()).hasSizeGreaterThan(5);9assertThat(new ArrayList<>()).hasSizeGreaterThanOrEqualTo(5);10assertThat(new ArrayList<>()).hasSameSizeAs(new ArrayList<>());11assertThat(new ArrayList<>()).hasSameSizeAs(new int[] {1,2,3});12assertThat(new ArrayList<>()).contains(1,2,3);13assertThat(new ArrayList<>()).containsExactly(1,2,3);14assertThat(new ArrayList<>()).containsExactlyInAnyOrder(1,2,3);15assertThat(new ArrayList<>()).containsOnly(1,2,3);16assertThat(new ArrayList<>()).containsOnlyOnce(1,2,3);17assertThat(new ArrayList<>()).containsExactlyInAnyOrderElementsOf(new ArrayList<>());18assertThat(new ArrayList<>()).containsExactlyElementsOf(new ArrayList<>());19assertThat(new ArrayList<>()).containsAnyOf(1,2,3);20assertThat(new ArrayList<>()).containsSequence(1,2,3);21assertThat(new ArrayList<>()).containsSubsequence(1,2,3);22assertThat(new ArrayList<>()).containsNull();23assertThat(new ArrayList<>()).doesNotContainNull();24assertThat(new ArrayList<>()).containsOnlyNulls();25assertThat(new ArrayList<>()).doesNotContain(1,2,3);26assertThat(new ArrayList<>()).doesNotContainNull();27assertThat(new ArrayList<>()).doesNotContainSequence(1,2,3);28assertThat(new ArrayList<>()).doesNotContainSubsequence(1,2,3);29assertThat(new ArrayList<>()).containsExactlyInAnyOrderEntriesOf(new HashMap<>());30assertThat(new ArrayList<>()).containsExactlyInAnyOrderEntriesOf(new LinkedHashMap<>());31assertThat(new ArrayList<>()).containsExactlyEntriesOf(new HashMap<>());32assertThat(new ArrayList<>()).containsExactlyEntriesOf(new LinkedHashMap<>());33assertThat(new ArrayList<>()).containsExactlyInAnyOrderKeys(1,2,3);34assertThat(new ArrayList<>()).containsExactlyInAnyOrderValues(1,2,3);35assertThat(new ArrayList<>()).containsExactlyInAnyOrderElementsOf(new ArrayList<>
emptyCollection
Using AI Code Generation
1public void emptyCollectionTest() {2 List<String> actual = Arrays.asList("one", "two", "three");3 assertThat(actual).isNotEmpty();4}5isNotEmpty()6public void isNotEmptyTest() {7 List<String> actual = Arrays.asList("one", "two", "three");8 assertThat(actual).isNotEmpty();9}10contains()11public void containsTest() {12 List<String> actual = Arrays.asList("one", "two", "three");13 assertThat(actual).contains("one");14}15public void containsTest() {16 List<String> actual = Arrays.asList("one", "two", "three");17 assertThat(actual).contains("one");18}19containsExactly()20public void containsExactlyTest() {21 List<String> actual = Arrays.asList("one", "two", "three");22 assertThat(actual).containsExactly("one", "two", "three");23}24containsExactlyInAnyOrder()25containsExactlyInAnyOrder() method of org.assertj.core.api.AbstractCollectionAssert class returns true if the collection contains exactly the given
emptyCollection
Using AI Code Generation
1public void testEmptyCollection() {2 Collection<String> collection = new ArrayList<>();3 assertThat(collection).isEmpty();4}5public void testNotEmptyCollection() {6 Collection<String> collection = new ArrayList<>();7 collection.add("element");8 assertThat(collection).isNotEmpty();9}10public void testEmptyOrNotEmptyCollection() {11 Collection<String> collection = new ArrayList<>();12 assertThat(collection).isEmpty();13 collection.add("element");14 assertThat(collection).isNotEmpty();15}16public void testEmptyOrNotEmptyCollectionUsingIsEmptyAndIsNotEmptyMethods() {17 Collection<String> collection = new ArrayList<>();18 assertThat(collection.isEmpty()).isTrue();19 collection.add("element");20 assertThat(collection.isEmpty()).isFalse();21 assertThat(collection).isNotEmpty();22}23public void testEmptyOrNotEmptyCollectionUsingIsEmptyAndIsNotEmptyMethods2() {24 Collection<String> collection = new ArrayList<>();25 assertThat(collection).isEmpty();26 collection.add("element");27 assertThat(collection).isNotEmpty();28}29public void testEmptyOrNotEmptyCollectionUsingIsEmptyAndIsNotEmptyMethods3() {30 Collection<String> collection = new ArrayList<>();31 assertThat(collection.isEmpty()).isTrue();32 collection.add("element");33 assertThat(collection.isEmpty()).isFalse();34}35public void testEmptyOrNotEmptyCollectionUsingIsEmptyAndIsNotEmptyMethods4() {36 Collection<String> collection = new ArrayList<>();37 assertThat(collection.isEmpty()).isTrue();38 collection.add("element");39 assertThat(collection.isEmpty()).isFalse();40 assertThat(collection.isEmpty()).isFalse();41}42public void testEmptyOrNotEmptyCollectionUsingIsEmptyAndIsNotEmptyMethods5() {43 Collection<String> collection = new ArrayList<>();44 assertThat(collection.isEmpty()).isTrue();45 collection.add("element");46 assertThat(collection.isEmpty()).isFalse();47 assertThat(collection.isEmpty()).isFalse();48 assertThat(collection.isEmpty()).isFalse();49}
emptyCollection
Using AI Code Generation
1public void givenEmptyCollection_whenIsEmptyAssertion_thenCorrect() {2 Collection collection = new ArrayList();3 assertThat(collection).isEmpty();4}5public void givenNonEmptyCollection_whenIsEmptyAssertion_thenCorrect() {6 Collection collection = new ArrayList();7 collection.add("one");8 assertThat(collection).isNotEmpty();9}10public void givenEmptyCollection_whenIsEmptyCollectionAssertion_thenCorrect() {11 Collection collection = new ArrayList();12 assertThat(collection).isEmptyCollection();13}14public void givenNonEmptyCollection_whenIsEmptyCollectionAssertion_thenCorrect() {15 Collection collection = new ArrayList();16 collection.add("one");17 assertThat(collection).isNotEmptyCollection();18}19public void givenEmptyCollection_whenIsEmptyCollectionAssertion_thenCorrect() {20 Collection collection = new ArrayList();21 assertThat(collection).isEmptyCollection();22}23public void givenNonEmptyCollection_whenIsEmptyCollectionAssertion_thenCorrect() {24 Collection collection = new ArrayList();25 collection.add("one");26 assertThat(collection).isNotEmptyCollection();27}28public void givenEmptyCollection_whenIsEmptyCollectionAssertion_thenCorrect() {29 Collection collection = new ArrayList();30 assertThat(collection).isEmptyCollection();31}32public void givenNonEmptyCollection_whenIsEmptyCollectionAssertion_thenCorrect() {33 Collection collection = new ArrayList();34 collection.add("one");35 assertThat(collection).isNotEmptyCollection();36}37public void givenEmptyCollection_whenIsEmptyCollectionAssertion_thenCorrect() {38 Collection collection = new ArrayList();39 assertThat(collection).isEmptyCollection();40}41public void givenNonEmptyCollection_whenIsEmptyCollectionAssertion_thenCorrect() {42 Collection collection = new ArrayList();43 collection.add("one");44 assertThat(collection).isNotEmptyCollection();45}46public void givenEmptyCollection_whenIsEmptyCollectionAssertion_thenCorrect() {47 Collection collection = new ArrayList();
emptyCollection
Using AI Code Generation
1import org.junit.jupiter.api.Test;2import org.junit.jupiter.api.DisplayName;3import org.junit.jupiter.api.Assertions;4import java.util.ArrayList;5import java.util.List;6public class AssertJEmptyCollectionTest {7 @DisplayName("Test empty collection")8 public void testEmptyCollection() {9 List<String> list = new ArrayList<>();10 Assertions.assertTrue(list.isEmpty());11 Assertions.assertEquals(0, list.size());12 Assertions.assertThrows(IndexOutOfBoundsException.class, () -> list.get(0));13 }14}15 at java.base/jdk.internal.util.Preconditions.outOfBounds(Preconditions.java:64)16 at java.base/jdk.internal.util.Preconditions.outOfBoundsCheckIndex(Preconditions.java:70)17 at java.base/jdk.internal.util.Preconditions.checkIndex(Preconditions.java:248)18 at java.base/java.util.Objects.checkIndex(Objects.java:372)19 at java.base/java.util.ArrayList.get(ArrayList.java:458)20 at com.baeldung.assertj.assertjemptycollection.AssertJEmptyCollectionTest.testEmptyCollection(AssertJEmptyCollectionTest.java:17)21import org.junit.jupiter.api.Test;22import org.junit.jupiter.api.DisplayName;23import org.junit.jupiter.api.Assertions;24import java.util.ArrayList;25import java.util.List;26import static org.assertj.core.api.Assertions.assertThat;27public class AssertJEmptyCollectionTest {28 @DisplayName("Test empty collection")29 public void testEmptyCollection() {30 List<String> list = new ArrayList<>();31 assertThat(list).isEmpty();32 assertThat(list).hasSize(0);33 assertThat(list).emptyCollection();34 assertThat(list).empty();35 assertThat(list).emptyIterable();36 assertThat(list).emptyArray();37 assertThat(list).emptyMap();38 assertThat(list).emptyTable();39 assertThat(list).emptyString();40 assertThat(list).emptyCharSequence();41 }42}
emptyCollection
Using AI Code Generation
1import org.junit.Test;2import org.junit.runner.RunWith;3import org.junit.runners.JUnit4;4import java.util.ArrayList;5import java.util.List;6import static org.assertj.core.api.Assertions.assertThat;7@RunWith(JUnit4.class)8public class AssertJEmptyCollectionExample {9 public void testEmptyCollection() {10 List<String> emptyList = new ArrayList<>();11 assertThat(emptyList).isEmpty();12 assertThat(emptyList).emptyCollection();13 }14}15 at org.junit.Assert.assertEquals(Assert.java:115)16 at org.junit.Assert.assertEquals(Assert.java:144)17 at org.assertj.core.api.AbstractAssert.isEqualTo(AbstractAssert.java:65)18 at org.assertj.core.api.ListAssert.isEqualTo(ListAssert.java:186)19 at org.assertj.core.api.AbstractListAssert.isEqualTo(AbstractListAssert.java:81)20 at org.assertj.core.api.AbstractListAssert.isEqualTo(AbstractListAssert.java:34)21 at org.assertj.core.api.AbstractIterableAssert.isEmpty(AbstractIterableAssert.java:81)22 at org.assertj.core.api.AbstractIterableAssert.isEmpty(AbstractIterableAssert.java:33)23 at org.assertj.core.api.AbstractCollectionAssert.emptyCollection(AbstractCollectionAssert.java:75)24 at org.assertj.core.api.AbstractCollectionAssert.emptyCollection(AbstractCollectionAssert.java:30)25 at AssertJEmptyCollectionExample.testEmptyCollection(AssertJEmptyCollectionExample.java:21)26 at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)27 at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)28 at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)29 at java.lang.reflect.Method.invoke(Method.java:498)30 at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)31 at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)32 at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)33 at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)34 at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)
Check out the latest blogs from LambdaTest on this topic:
Hey everyone! We hope you had a great Hacktober. At LambdaTest, we thrive to bring you the best with each update. Our engineering and tech teams work at lightning speed to deliver you a seamless testing experience.
Selenium, a project hosted by the Apache Software Foundation, is an umbrella open-source project comprising a variety of tools and libraries for test automation. Selenium automation framework enables QA engineers to perform automated web application testing using popular programming languages like Python, Java, JavaScript, C#, Ruby, and PHP.
Dries Buytaert, a graduate student at the University of Antwerp, came up with the idea of developing something similar to a chat room. Moreover, he modified the conventional chat rooms into a website where his friends could post their queries and reply through comments. However, for this project, he thought of creating a temporary archive of posts.
In today’s fast-paced world, the primary goal of every business is to release their application or websites to the end users as early as possible. As a result, businesses constantly search for ways to test, measure, and improve their products. With the increase in competition, faster time to market (TTM) has become vital for any business to survive in today’s market. However, one of the possible challenges many business teams face is the release cycle time, which usually gets extended for several reasons.
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.
You could also refer to video tutorials over LambdaTest YouTube channel to get step by step demonstration from industry experts.
Get 100 minutes of automation test minutes FREE!!