97 lines
2.9 KiB
Java
97 lines
2.9 KiB
Java
/*
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* Copyright 2012 The Netty Project
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*
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* The Netty Project licenses this file to you under the Apache License,
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* version 2.0 (the "License"); you may not use this file except in compliance
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* with the License. You may obtain a copy of the License at:
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*/
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package io.netty.util;
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import org.junit.Test;
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import java.util.Arrays;
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import java.util.Comparator;
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import java.util.Set;
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import java.util.TreeSet;
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import static org.hamcrest.CoreMatchers.*;
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import static org.junit.Assert.*;
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public class ConstantPoolTest {
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static final class TestConstant extends AbstractConstant<TestConstant> {
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TestConstant(int id, String name) {
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super(id, name);
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}
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}
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private static final ConstantPool<TestConstant> pool = new ConstantPool<TestConstant>() {
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@Override
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protected TestConstant newConstant(int id, String name) {
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return new TestConstant(id, name);
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}
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};
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@Test(expected = NullPointerException.class)
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public void testCannotProvideNullName() {
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pool.valueOf(null);
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}
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@Test
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@SuppressWarnings("RedundantStringConstructorCall")
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public void testUniqueness() {
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TestConstant a = pool.valueOf(new String("Leroy"));
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TestConstant b = pool.valueOf(new String("Leroy"));
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assertThat(a, is(sameInstance(b)));
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}
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@Test
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public void testIdUniqueness() {
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TestConstant one = pool.valueOf("one");
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TestConstant two = pool.valueOf("two");
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assertThat(one.id(), is(not(two.id())));
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}
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@Test
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public void testCompare() {
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TestConstant a = pool.valueOf("a_alpha");
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TestConstant b = pool.valueOf("b_beta");
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TestConstant c = pool.valueOf("c_gamma");
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TestConstant d = pool.valueOf("d_delta");
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TestConstant e = pool.valueOf("e_epsilon");
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Set<TestConstant> set = new TreeSet<>();
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set.add(b);
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set.add(c);
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set.add(e);
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set.add(d);
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set.add(a);
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TestConstant[] array = set.toArray(new TestConstant[0]);
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assertThat(array.length, is(5));
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// Sort by name
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Arrays.sort(array, (o1, o2) -> o1.name().compareTo(o2.name()));
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assertThat(array[0], is(sameInstance(a)));
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assertThat(array[1], is(sameInstance(b)));
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assertThat(array[2], is(sameInstance(c)));
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assertThat(array[3], is(sameInstance(d)));
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assertThat(array[4], is(sameInstance(e)));
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}
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@Test
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public void testComposedName() {
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TestConstant a = pool.valueOf(Object.class, "A");
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assertThat(a.name(), is("java.lang.Object#A"));
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}
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}
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