How to use hasItems method of org.hamcrest.core.IsCollectionContaining class

Best junit code snippet using org.hamcrest.core.IsCollectionContaining.hasItems

Source:CoreMatchers.java

...67    public static <T> Matcher<Iterable<? super T>> hasItem(T item) {68        return IsCollectionContaining.hasItem((Object) item);69    }70    @SafeVarargs71    public static <T> Matcher<Iterable<T>> hasItems(Matcher<? super T>... itemMatchers) {72        return IsCollectionContaining.hasItems((Matcher[]) itemMatchers);73    }74    @SafeVarargs75    public static <T> Matcher<Iterable<T>> hasItems(T... items) {76        return IsCollectionContaining.hasItems((Object[]) items);77    }78    public static <T> Matcher<T> equalTo(T operand) {79        return IsEqual.equalTo(operand);80    }81    public static Matcher<Object> equalToObject(Object operand) {82        return IsEqual.equalToObject(operand);83    }84    public static <T> Matcher<T> any(Class<T> type) {85        return IsInstanceOf.any(type);86    }87    public static <T> Matcher<T> instanceOf(Class<?> type) {88        return IsInstanceOf.instanceOf(type);89    }90    public static <T> Matcher<T> not(Matcher<T> matcher) {...

Source:IsCollectionContainingTest.java

...8import java.util.Set;9import static java.util.Arrays.asList;10import static org.hamcrest.AbstractMatcherTest.*;11import static org.hamcrest.core.IsCollectionContaining.hasItem;12import static org.hamcrest.core.IsCollectionContaining.hasItems;13import static org.hamcrest.core.IsEqual.equalTo;14public final class IsCollectionContainingTest {15    16    @Test public void17    copesWithNullsAndUnknownTypes() {18        Matcher<?> matcher = hasItem(equalTo("irrelevant"));19        20        assertNullSafe(matcher);21        assertUnknownTypeSafe(matcher);22    }23    @Test public void24    matchesACollectionThatContainsAnElementForTheGivenMatcher() {25        final Matcher<Iterable<? super String>> itemMatcher = hasItem(equalTo("a"));26        assertMatches("list containing 'a'", itemMatcher, asList("a", "b", "c"));27    }28    @Test public void29    doesNotMatchCollectionWithoutAnElementForGivenMatcher() {30        final Matcher<Iterable<? super String>> matcher = hasItem(mismatchable("a"));31        32        assertMismatchDescription("mismatches were: [mismatched: b, mismatched: c]", matcher, asList("b", "c"));33        assertMismatchDescription("was empty", matcher, new ArrayList<String>());34    }35    @Test public void36    doesNotMatchNull() {37        assertDoesNotMatch("doesn't match null", hasItem(equalTo("a")), null);38    }39    @Test public void40    hasAReadableDescription() {41        assertDescription("a collection containing mismatchable: a", hasItem(mismatchable("a")));42    }43    44    @Test public void45    canMatchItemWhenCollectionHoldsSuperclass() { // Issue 2446        final Set<Number> s = new HashSet<Number>();47        s.add(2);48        assertMatches(new IsCollectionContaining<Number>(new IsEqual<Number>(2)), s);49        assertMatches(IsCollectionContaining.hasItem(2), s);50    }51    @SuppressWarnings("unchecked")52    @Test public void53    matchesMultipleItemsInCollection() {54        final Matcher<Iterable<String>> matcher1 = hasItems(equalTo("a"), equalTo("b"), equalTo("c"));55        assertMatches("list containing all items", matcher1, asList("a", "b", "c"));56        57        final Matcher<Iterable<String>> matcher2 = hasItems("a", "b", "c");58        assertMatches("list containing all items (without matchers)", matcher2, asList("a", "b", "c"));59        60        final Matcher<Iterable<String>> matcher3 = hasItems(equalTo("a"), equalTo("b"), equalTo("c"));61        assertMatches("list containing all items in any order", matcher3, asList("c", "b", "a"));62        63        final Matcher<Iterable<String>> matcher4 = hasItems(equalTo("a"), equalTo("b"), equalTo("c"));64        assertMatches("list containing all items plus others", matcher4, asList("e", "c", "b", "a", "d"));65        66        final Matcher<Iterable<String>> matcher5 = hasItems(equalTo("a"), equalTo("b"), equalTo("c"));67        assertDoesNotMatch("not match list unless it contains all items", matcher5, asList("e", "c", "b", "d")); // 'a' missing68    }69    70    @Test public void71    reportsMismatchWithAReadableDescriptionForMultipleItems() {72        final Matcher<Iterable<Integer>> matcher = hasItems(3, 4);73        74        assertMismatchDescription("a collection containing <4> mismatches were: [was <1>, was <2>, was <3>]",75                                  matcher, asList(1, 2, 3));76    }77    private static Matcher<? super String> mismatchable(final String string) {78        return new TypeSafeDiagnosingMatcher<String>() {79            @Override80            protected boolean matchesSafely(String item, Description mismatchDescription) {81                if (string.equals(item)) 82                    return true;83                mismatchDescription.appendText("mismatched: " + item);84                return false;85            }86            @Override...

hasItems

Using AI Code Generation

1import org.hamcrest.core.IsCollectionContaining;2import org.junit.Test;3import java.util.ArrayList;4import java.util.Arrays;5import java.util.List;6import static org.hamcrest.MatcherAssert.assertThat;7public class IsCollectionContainingTest {8    public void testHasItems() {9        List<String> list = new ArrayList<>(Arrays.asList("one", "two", "three"));10        assertThat(list, IsCollectionContaining.hasItems("one", "two"));11    }12}

hasItems

Using AI Code Generation

1assertThat(list, hasItems(1,2,3))2assertThat(list, hasItems(1,2,5))3assertThat(list, hasItems(1,2,3,4,5))4assertThat(list, hasItems(1))5assertThat(list, hasItems(1,2,3,4))6assertThat(list, hasItems(1,2,3,4,5))7assertThat(list, hasItems(1,2,3,4,5,6))8assertThat(list, hasItems(1,2,3,4,5,6,7))9assertThat(list, hasItems(1,2,3,4,5,6,7,8))10assertThat(list, hasItems(1,2,3,4,5,6,7,8,9))11assertThat(list, hasItems(1,2,3,4,5,6,7,8,9,10))12assertThat(list, hasItems(1,2,3,4,5,6,7,8,9,10,11))13assertThat(list, hasItems(1,2,3,4,5,6,7,8,9,10,11,12))14assertThat(list, hasItems(1,2,3,4,5,6,7,8,9,10,11,12,13))15assertThat(list, hasItems(1,2,3,4,5,6,7,8,9,10,11,12,13,14))16assertThat(list, hasItems(1,2,3,4,5,6,7,8,9,10,11,12,13,14,15))17assertThat(list, hasItems(1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16))18assertThat(list, hasItems(1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17))19assertThat(list, hasItems(1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18

hasItems

Using AI Code Generation

1import static org.hamcrest.MatcherAssert.assertThat2import static org.hamcrest.Matchers.*3assertThat list, hasItems(1, 2, 3)4assertThat list, hasItems(1, 2, 3, 4, 5)5assertThat list, hasItems(4, 5, 3, 2, 1)6assertThat list, hasItems(1, 2, 3, 4, 5, 6)7assertThat list, hasItems(1, 2, 3, 4, 5, 6, 7)8assertThat list, hasItems(1, 2, 3, 4, 5, 6, 7, 8)9assertThat list, hasItems(1, 2, 3, 4, 5, 6, 7, 8, 9)10assertThat list, hasItems(1, 2, 3, 4, 5, 6, 7, 8, 9, 10)11assertThat list, hasItems(1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11)12assertThat list, hasItems(1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)13assertThat list, hasItems(1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)14assertThat list, hasItems(1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)15assertThat list, hasItems(1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)

hasItems

Using AI Code Generation

1import org.hamcrest.collection.IsCollectionContaining.hasItems2import org.hamcrest.MatcherAssert.assertThat3assertThat list, hasItems(1, 2)4import org.hamcrest.collection.IsCollectionContaining.hasItem5import org.hamcrest.MatcherAssert.assertThat6assertThat list, hasItem(1)7import static org.hamcrest.collection.IsCollectionContaining.hasItems8import static org.hamcrest.MatcherAssert.assertThat9assertThat list, hasItems(1, 2)10import static org.hamcrest.collection.IsCollectionContaining.hasItem11import static org.hamcrest.MatcherAssert.assertThat12assertThat list, hasItem(1)13import static org.hamcrest.collection.IsCollectionContaining.hasItems14import static org.hamcrest.MatcherAssert.assertThat15assertThat list, hasItems(1, 2)16import static org.hamcrest.collection.IsCollectionContaining.hasItem17import static org.hamcrest.MatcherAssert.assertThat18assertThat list, hasItem(1)19import static org.hamcrest.collection.IsCollectionContaining.hasItems20import static org.hamcrest.MatcherAssert.assertThat21assertThat list, hasItems(1, 2)22import static org.hamcrest.collection.IsCollectionContaining.hasItem23import static org.hamcrest.MatcherAssert.assertThat24assertThat list, hasItem(1)25import static org.hamcrest.collection.IsCollectionContaining.hasItems26import static org.hamcrest.MatcherAssert.assertThat27assertThat list, hasItems(1, 2

hasItems

Using AI Code Generation

1def "test hasItems"() {2    list.hasItems(1, 3)3}4def "test hasItem"() {5    list.hasItem(1)6}7def "test contains"() {8    list.contains(1)9}10def "test containsInAnyOrder"() {11    list.containsInAnyOrder(3, 1)12}13def "test containsInRelativeOrder"() {14    list.containsInRelativeOrder(1, 3)15}16def "test containsExactlyInAnyOrder"() {17    list.containsExactlyInAnyOrder(3, 1, 2)18}19def "test containsExactlyInRelativeOrder"() {20    list.containsExactlyInRelativeOrder(1, 3, 2)21}22def "test containsExactlyElementsOf"() {23    list.containsExactlyElementsOf([3, 1, 2])24}25def "test containsExactlyElementsOfInAnyOrder"() {26    list.containsExactlyElementsOfInAnyOrder([3, 1, 2])27}28def "test containsExactlyElementsOfInRelativeOrder"() {29    list.containsExactlyElementsOfInRelativeOrder([1, 3, 2])30}31def "test containsAll"() {32    list.containsAll(3, 1

hasItems

Using AI Code Generation

1assertThat(items, hasItems(1,3,5))2assertThat(items, hasItems(1,3,5))3assertThat(items, hasItems(1,3,5))4assertThat(items, hasItems(1,3,5))5assertThat(items, hasItems(1,3,5))6assertThat(items, hasItems(1,3,5))7assertThat(items, hasItems(1,3,5))8assertThat(items, hasItems(1,3,5))9assertThat(items, hasItems(1,3

hasItems

Using AI Code Generation

1import org.hamcrest.core.IsCollectionContaining;2import org.hamcrest.Matcher;3import org.hamcrest.MatcherAssert;4import org.hamcrest.Matchers;5class HasItemsTest {6    def "test hasItems method"() {7        Matcher matcher = IsCollectionContaining.hasItems(1, 2, 3, 4, 5, 6, 7, 8, 9, 10)8        MatcherAssert.assertThat(collection, matcher)9    }10}11org.hamcrest.MatcherAssert.assertThat(MatcherAssert.java:20)12org.hamcrest.MatcherAssert.assertThat(MatcherAssert.java:8)13HasItemsTest.test hasItems method(HasItemsTest.groovy:18)14org.hamcrest.core.IsCollectionContaining.hasItems(IsCollectionContaining.java:50)15HasItemsTest.test hasItems method(HasItemsTest.groovy:18)16groovy.lang.MissingMethodException: No signature of method: static org.hamcrest.core.IsCollectionContaining.hasItems() is applicable for argument types: (java.util.ArrayList, java.util.ArrayList) values: [[1, 2, 3, 4, 5, 6, 7, 8, 9, 10], [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]]17Possible solutions: hasItems(java.lang.Object[])18	at HasItemsTest.test hasItems method(HasItemsTest.groovy:18)

JUnit Tutorial:

LambdaTest also has a detailed JUnit tutorial explaining its features, importance, advanced use cases, best practices, and more to help you get started with running your automation testing scripts.

JUnit Tutorial Chapters:

Here are the detailed JUnit testing chapters to help you get started:

Importance of Unit testing - Learn why Unit testing is essential during the development phase to identify bugs and errors.
Top Java Unit testing frameworks - Here are the upcoming JUnit automation testing frameworks that you can use in 2023 to boost your unit testing.
What is the JUnit framework
Why is JUnit testing important - Learn the importance and numerous benefits of using the JUnit testing framework.
Features of JUnit - Learn about the numerous features of JUnit and why developers prefer it.
JUnit 5 vs. JUnit 4: Differences - Here is a complete comparison between JUnit 5 and JUnit 4 testing frameworks.
Setting up the JUnit environment - Learn how to set up your JUnit testing environment.
Getting started with JUnit testing - After successfully setting up your JUnit environment, this chapter will help you get started with JUnit testing in no time.
Parallel testing with JUnit - Parallel Testing can be used to reduce test execution time and improve test efficiency. Learn how to perform parallel testing with JUnit.
Annotations in JUnit - When writing automation scripts with JUnit, we can use JUnit annotations to specify the type of methods in our test code. This helps us identify those methods when we run JUnit tests using Selenium WebDriver. Learn in detail what annotations are in JUnit.
Assertions in JUnit - Assertions are used to validate or test that the result of an action/functionality is the same as expected. Learn in detail what assertions are and how to use them while performing JUnit testing.
Parameterization in JUnit - Parameterized Test enables you to run the same automated test scripts with different variables. By collecting data on each method's test parameters, you can minimize time spent on writing tests. Learn how to use parameterization in JUnit.
Nested Tests In JUnit 5 - A nested class is a non-static class contained within another class in a hierarchical structure. It can share the state and setup of the outer class. Learn about nested annotations in JUnit 5 with examples.
Best practices for JUnit testing - Learn about the best practices, such as always testing key methods and classes, integrating JUnit tests with your build, and more to get the best possible results.
Advanced Use Cases for JUnit testing - Take a deep dive into the advanced use cases, such as how to run JUnit tests in Jupiter, how to use JUnit 5 Mockito for Unit testing, and more for JUnit testing.