| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package org.apache.commons.collections4.multiset; |
| |
| import static org.junit.jupiter.api.Assertions.assertThrows; |
| |
| import java.util.Set; |
| |
| import org.apache.commons.collections4.BulkTest; |
| import org.apache.commons.collections4.MultiSet; |
| import org.apache.commons.collections4.Predicate; |
| import org.apache.commons.collections4.functors.TruePredicate; |
| import org.junit.jupiter.api.Test; |
| |
| /** |
| * Extension of {@link AbstractMultiSetTest} for exercising the |
| * {@link PredicatedMultiSet} implementation. |
| * |
| * @since 4.1 |
| */ |
| public class PredicatedMultiSetTest<T> extends AbstractMultiSetTest<T> { |
| |
| public PredicatedMultiSetTest() { |
| super(PredicatedMultiSetTest.class.getSimpleName()); |
| } |
| |
| public static junit.framework.Test suite() { |
| return BulkTest.makeSuite(PredicatedMultiSetTest.class); |
| } |
| |
| protected Predicate<T> stringPredicate() { |
| return o -> o instanceof String; |
| } |
| |
| protected Predicate<T> truePredicate = TruePredicate.<T>truePredicate(); |
| |
| protected MultiSet<T> decorateMultiSet(final HashMultiSet<T> multiset, final Predicate<T> predicate) { |
| return PredicatedMultiSet.predicatedMultiSet(multiset, predicate); |
| } |
| |
| @Override |
| public MultiSet<T> makeObject() { |
| return decorateMultiSet(new HashMultiSet<T>(), truePredicate); |
| } |
| |
| protected MultiSet<T> makeTestMultiSet() { |
| return decorateMultiSet(new HashMultiSet<T>(), stringPredicate()); |
| } |
| |
| @Override |
| protected int getIterationBehaviour() { |
| return UNORDERED; |
| } |
| |
| @Test |
| @SuppressWarnings("unchecked") |
| public void testLegalAddRemove() { |
| final MultiSet<T> multiset = makeTestMultiSet(); |
| assertEquals(0, multiset.size()); |
| final T[] els = (T[]) new Object[] { "1", "3", "5", "7", "2", "4", "1" }; |
| for (int i = 0; i < els.length; i++) { |
| multiset.add(els[i]); |
| assertEquals(i + 1, multiset.size()); |
| assertTrue(multiset.contains(els[i])); |
| } |
| Set<T> set = ((PredicatedMultiSet<T>) multiset).uniqueSet(); |
| assertTrue("Unique set contains the first element", set.contains(els[0])); |
| assertTrue(multiset.remove(els[0])); |
| set = ((PredicatedMultiSet<T>) multiset).uniqueSet(); |
| assertTrue("Unique set does not contain anymore the first element", |
| set.contains(els[0])); |
| } |
| |
| @Test |
| @SuppressWarnings("unchecked") |
| public void testIllegalAdd() { |
| final MultiSet<T> multiset = makeTestMultiSet(); |
| final Integer i = Integer.valueOf(3); |
| assertThrows(IllegalArgumentException.class, () -> multiset.add((T) i), |
| "Integer should fail string predicate."); |
| assertFalse("Collection shouldn't contain illegal element", multiset.contains(i)); |
| } |
| |
| @Test |
| @SuppressWarnings("unchecked") |
| public void testIllegalDecorate() { |
| final HashMultiSet<Object> elements = new HashMultiSet<>(); |
| elements.add("one"); |
| elements.add("two"); |
| elements.add(Integer.valueOf(3)); |
| elements.add("four"); |
| assertThrows(IllegalArgumentException.class, () -> decorateMultiSet((HashMultiSet<T>) elements, stringPredicate()), |
| "MultiSet contains an element that should fail the predicate."); |
| assertThrows(NullPointerException.class, () -> decorateMultiSet(new HashMultiSet<T>(), null), |
| "Expecting NullPointerException for null predicate."); |
| } |
| |
| @Override |
| public String getCompatibilityVersion() { |
| return "4.1"; |
| } |
| |
| // public void testCreate() throws Exception { |
| // MultiSet<T> multiset = makeObject(); |
| // writeExternalFormToDisk((java.io.Serializable) multiset, "src/test/resources/data/test/PredicatedMultiSet.emptyCollection.version4.1.obj"); |
| // multiset = makeFullCollection(); |
| // writeExternalFormToDisk((java.io.Serializable) multiset, "src/test/resources/data/test/PredicatedMultiSet.fullCollection.version4.1.obj"); |
| // } |
| |
| } |