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/*
* Copyright (C) 2017-2022 Sebastiano Vigna
*
* 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 it.unimi.dsi.fastutil.ints;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertTrue;
import java.util.Collections;
import java.util.EnumSet;
import java.util.function.Supplier;
import org.junit.Test;
import org.junit.runners.Parameterized.Parameters;
import it.unimi.dsi.fastutil.objects.ObjectIterator;
import it.unimi.dsi.fastutil.objects.ObjectSet;
import it.unimi.dsi.fastutil.objects.ObjectSets;
public class AbstractInt2IntMapTest extends Int2IntMapGenericTest<AbstractInt2IntMap> {
@Parameters
public static Iterable<Object[]> data() {
return Collections.singletonList(new Object[] {(Supplier<Int2IntMap>) SimpleInt2IntMap::new, EnumSet.allOf(Capability.class)});
}
// A basic implementation of AbstractInt2IntMap that contains as little methods implemented
// possible to make a mutable map, so we can test as many of the AbstractInt2IntMap default
// implementations as possible.
static final class SimpleInt2IntMap extends AbstractInt2IntMap implements Int2IntMap {
private static final long serialVersionUID = 1L;
private final IntList keys = new IntArrayList();
private final IntList values = new IntArrayList();
@Override
public int get(final int key) {
final int index = keys.indexOf(key);
if (index == -1) {
return defaultReturnValue();
}
return values.getInt(index);
}
@Override
public int size() {
return keys.size();
}
@Override
public int put(final int key, final int value) {
final int index = keys.indexOf(key);
if (index == -1) {
keys.add(key);
values.add(value);
return defaultReturnValue();
}
return values.set(index, value);
}
@Override
public int remove(final int key) {
final int index = keys.indexOf(key);
if (index == -1) {
return defaultReturnValue();
}
keys.removeInt(index);
return values.removeInt(index);
}
@Override
public void clear() {
keys.clear();
values.clear();
}
@Override
public ObjectSet<Entry> int2IntEntrySet() {
return new AbstractInt2IntMap.BasicEntrySet(this) {
@Override
public ObjectIterator<Entry> iterator() {
return new ObjectIterator<Entry>() {
final IntIterator keyIter = keys.iterator();
final IntIterator valueIter = values.iterator();
@Override
public boolean hasNext() {
return keyIter.hasNext();
}
@Override
public Entry next() {
return new AbstractInt2IntMap.BasicEntry(keyIter.nextInt(), valueIter.nextInt());
}
@Override
public void remove() {
keyIter.remove();
valueIter.remove();
}
};
}
};
}
}
@Test
public void testContainsKeyEmptySet() {
m = new AbstractInt2IntMap() {
private static final long serialVersionUID = 0L;
@Override
public int size() {
return 0;
}
@Override
public int get(final int key) {
return -1;
}
@Override
public ObjectSet<Entry> int2IntEntrySet() {
return ObjectSets.EMPTY_SET;
}
};
assertFalse(m.containsKey(0));
}
@Test
public void testContainsKeySingleton() {
m = new AbstractInt2IntMap() {
private static final long serialVersionUID = 0L;
@Override
public int size() {
return 1;
}
@Override
public int get(final int key) {
return key == 0 ? 0 : -1;
}
@Override
public ObjectSet<Entry> int2IntEntrySet() {
return ObjectSets.singleton((Entry)new AbstractInt2IntMap.BasicEntry(0,0));
}
};
assertTrue(m.containsKey(0));
assertFalse(m.containsKey(1));
}
}
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