Package org.assertj.core.api

Class AbstractCollectionAssert<SELF extends AbstractCollectionAssert<SELF,​ACTUAL,​ELEMENT,​ELEMENT_ASSERT>,​ACTUAL extends Collection<? extends ELEMENT>,​ELEMENT,​ELEMENT_ASSERT extends AbstractAssert<ELEMENT_ASSERT,​ELEMENT>>

    • Constructor Detail

      • AbstractCollectionAssert

        protected AbstractCollectionAssert​(ACTUAL actual,
                                   Class<?> selfType)

    • Method Detail

      • isUnmodifiable

        public SELF isUnmodifiable()
        Verifies that the actual collection is unmodifiable, i.e., throws an 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();
        Returns:
        this assertion object.
        Throws:
        AssertionError - if the actual collection is modifiable.
        See Also:
        Collections.unmodifiableCollection(Collection), Collections.unmodifiableList(List), Collections.unmodifiableSet(Set)

      • assertIsUnmodifiable

        private void assertIsUnmodifiable()

      • expectUnsupportedOperationException

        private void expectUnsupportedOperationException​(Runnable runnable,
                                                 String method)