/*
* JBoss, Home of Professional Open Source
* Copyright 2014, Red Hat, Inc., and individual contributors
* by the @authors tag. See the copyright.txt in the distribution for a
* full listing of individual contributors.
*
* Licensed 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.jboss.weld.tests.unit.util.collections;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertTrue;
import static org.junit.Assert.fail;
import java.util.HashSet;
import java.util.Iterator;
import java.util.LinkedHashSet;
import java.util.Set;
import org.jboss.weld.util.collections.Sets;
import org.junit.Test;
public class SetsTest {
@Test
public void testNewHashSet() {
Set<String> set = Sets.newHashSet("foo", "bar");
assertEquals(2, set.size());
assertTrue(set.contains("foo"));
assertTrue(set.contains("bar"));
}
@Test
public void testUnion() {
Set<String> set1 = new LinkedHashSet<>();
Set<String> set2 = new LinkedHashSet<>();
set1.add("foo");
set1.add("bar");
set1.add("baz");
set2.add("bar");
set2.add("qux");
Set<String> union = Sets.union(set1, set2);
assertEquals(4, union.size());
assertFalse(union.isEmpty());
assertTrue(union.contains("baz"));
assertTrue(union.contains("bar"));
assertTrue(union.contains("qux"));
Iterator<String> iterator = union.iterator();
assertTrue(iterator.hasNext());
assertEquals("foo", iterator.next());
assertEquals("bar", iterator.next());
assertEquals("baz", iterator.next());
assertEquals("qux", iterator.next());
try {
iterator.remove();
fail();
} catch (UnsupportedOperationException e) {
// Expected
}
assertFalse(iterator.hasNext());
assertTrue(Sets.union(new HashSet<>(), new HashSet<>()).isEmpty());
}
}