SELF - the "self" type of this assertion class. Please read "Emulating 'self types' using Java Generics to simplify fluent API implementation"
for more details.ACTUAL - the type of the "actual" value.ELEMENT - the type of elements of the "actual" value.ELEMENT_ASSERT - used for navigational assertions to return the right assert type.public abstract class AbstractCollectionAssert<SELF extends AbstractCollectionAssert<SELF,ACTUAL,ELEMENT,ELEMENT_ASSERT>,ACTUAL extends Collection<? extends ELEMENT>,ELEMENT,ELEMENT_ASSERT extends AbstractAssert<ELEMENT_ASSERT,ELEMENT>> extends AbstractIterableAssert<SELF,ACTUAL,ELEMENT,ELEMENT_ASSERT>
Collections.iterablesactual, info, myself, objects, throwUnsupportedExceptionOnEquals| Modifier | Constructor and Description |
|---|---|
protected |
AbstractCollectionAssert(ACTUAL actual,
Class<?> selfType) |
| Modifier and Type | Method and Description |
|---|---|
SELF |
isUnmodifiable()
Verifies that the actual collection is unmodifiable, i.e., throws an
UnsupportedOperationException with
any attempt to modify the collection. |
allMatch, allMatch, allSatisfy, allSatisfy, anyMatch, anySatisfy, anySatisfy, are, areAtLeast, areAtLeastOne, areAtMost, areExactly, areNot, as, as, contains, containsAll, containsAnyElementsOf, containsAnyOf, containsAnyOfForProxy, containsExactly, containsExactlyElementsOf, containsExactlyForProxy, containsExactlyInAnyOrder, containsExactlyInAnyOrderElementsOf, containsExactlyInAnyOrderForProxy, containsForProxy, containsNull, containsOnly, containsOnlyElementsOf, containsOnlyForProxy, containsOnlyNulls, containsOnlyOnce, containsOnlyOnceElementsOf, containsOnlyOnceForProxy, containsSequence, containsSequence, containsSequenceForProxy, containsSubsequence, containsSubsequence, containsSubsequenceForProxy, describedAs, describedAs, doesNotContain, doesNotContainAnyElementsOf, doesNotContainForProxy, doesNotContainNull, doesNotContainSequence, doesNotContainSequence, doesNotContainSequenceForProxy, doesNotContainSubsequence, doesNotContainSubsequence, doesNotContainSubsequenceForProxy, doesNotHave, doesNotHaveAnyElementsOfTypes, doesNotHaveDuplicates, doesNotHaveSameClassAs, doNotHave, element, element, elements, endsWith, endsWith, endsWithForProxy, extracting, extracting, extracting, extracting, extracting, extracting, extractingForProxy, extractingResultOf, extractingResultOf, filteredOn, filteredOn, filteredOn, filteredOn, filteredOn, filteredOnAssertions, filteredOnAssertions, filteredOnNull, first, first, flatExtracting, flatExtracting, flatExtracting, flatExtracting, flatExtracting, flatExtracting, flatExtractingForProxy, flatMap, flatMap, flatMap, flatMap, getComparatorsByType, getComparatorsForElementPropertyOrFieldTypes, has, hasAtLeastOneElementOfType, hasExactlyElementsOfTypes, hasOnlyElementsOfType, hasOnlyElementsOfTypes, hasOnlyOneElementSatisfying, hasSameClassAs, hasSameElementsAs, hasSameSizeAs, hasSameSizeAs, hasSize, hasSizeBetween, hasSizeGreaterThan, hasSizeGreaterThanOrEqualTo, hasSizeLessThan, hasSizeLessThanOrEqualTo, hasToString, have, haveAtLeast, haveAtLeastOne, haveAtMost, haveExactly, inBinary, inHexadecimal, is, isEmpty, isEqualTo, isExactlyInstanceOf, isIn, isIn, isInstanceOf, isInstanceOfAny, isNot, isNotEmpty, isNotEqualTo, isNotExactlyInstanceOf, isNotIn, isNotIn, isNotInstanceOf, isNotInstanceOfAny, isNotNull, isNotOfAnyClassIn, isNotSameAs, isNullOrEmpty, isOfAnyClassIn, isSameAs, isSubsetOf, isSubsetOf, isSubsetOfForProxy, last, last, map, map, map, navigationDescription, newAbstractIterableAssert, newAbstractIterableAssertForProxy, noneMatch, noneSatisfy, noneSatisfy, overridingErrorMessage, satisfiesExactly, satisfiesExactly, satisfiesExactlyForProxy, satisfiesExactlyInAnyOrder, satisfiesExactlyInAnyOrder, satisfiesExactlyInAnyOrderForProxy, singleElement, singleElement, size, startsWith, startsWithForProxy, toAssert, usingComparator, usingComparator, usingComparatorForElementFieldsWithNames, usingComparatorForElementFieldsWithType, usingComparatorForType, usingComparisonStrategy, usingDefaultComparator, usingDefaultElementComparator, usingElementComparator, usingElementComparatorIgnoringFields, usingElementComparatorOnFields, usingFieldByFieldElementComparator, usingRecursiveComparison, usingRecursiveComparison, usingRecursiveFieldByFieldElementComparator, usingRecursiveFieldByFieldElementComparator, usingRecursiveFieldByFieldElementComparatorIgnoringFields, usingRecursiveFieldByFieldElementComparatorOnFields, withFailMessage, withThreadDumpOnError, zipSatisfyareEqual, asInstanceOf, asList, assertionError, asString, descriptionText, doesNotHaveSameHashCodeAs, doesNotHaveToString, equals, extracting, extracting, failure, failureWithActualExpected, failWithActualExpectedAndMessage, failWithMessage, getWritableAssertionInfo, hashCode, hasSameHashCodeAs, isElementOfCustomAssert, isInstanceOfSatisfying, isNull, matches, matches, newListAssertInstance, overridingErrorMessage, satisfies, satisfies, satisfies, satisfiesAnyOf, satisfiesAnyOf, satisfiesAnyOfForProxy, satisfiesForProxy, setCustomRepresentation, setDescriptionConsumer, setPrintAssertionsDescription, throwAssertionError, withFailMessage, withRepresentationclone, finalize, getClass, notify, notifyAll, toString, wait, wait, waitaspublic SELF isUnmodifiable()
UnsupportedOperationException with
any attempt to modify the collection.
Example:
// assertions will pass
assertThat(Collections.unmodifiableCollection(new ArrayList<>())).isUnmodifiable();
assertThat(Collections.unmodifiableList(new ArrayList<>())).isUnmodifiable();
assertThat(Collections.unmodifiableSet(new HashSet<>())).isUnmodifiable();
// assertions will fail
assertThat(new ArrayList<>()).isUnmodifiable();
assertThat(new HashSet<>()).isUnmodifiable();this assertion object.AssertionError - if the actual collection is modifiable.Collections.unmodifiableCollection(Collection),
Collections.unmodifiableList(List),
Collections.unmodifiableSet(Set)Copyright © 2025. All rights reserved.