/*
* Copyright (c) MuleSoft, Inc. All rights reserved. http://www.mulesoft.com
* The software in this package is published under the terms of the CPAL v1.0
* license, a copy of which has been included with this distribution in the
* LICENSE.txt file.
*/
package org.mule.runtime.core.util.collection;
import static org.hamcrest.CoreMatchers.is;
import static org.hamcrest.CoreMatchers.sameInstance;
import static org.junit.Assert.assertThat;
import org.mule.tck.junit4.AbstractMuleTestCase;
import org.mule.tck.size.SmallTest;
import org.mule.tck.testmodels.fruit.Apple;
import org.mule.tck.testmodels.fruit.Banana;
import org.mule.tck.testmodels.fruit.Fruit;
import org.mule.tck.testmodels.fruit.Kiwi;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import java.util.Map;
import org.junit.Test;
@SmallTest
public class ImmutableMapCollectorTestCase extends AbstractMuleTestCase {
private final ImmutableMapCollector<Fruit, String, Fruit> collector =
new ImmutableMapCollector<>(f -> f.getClass().getName(), f -> f);
@Test
public void collect() {
final List<Fruit> fruits = Arrays.asList(new Apple(), new Banana(), new Kiwi());
Map<String, Fruit> map = fruits.stream().collect(collector);
assertThat(map.size(), is(3));
fruits.forEach(fruit -> {
Fruit value = map.get(fruit.getClass().getName());
assertThat(value, sameInstance(fruit));
});
}
@Test
public void emptyMap() {
Map<String, Fruit> map = new ArrayList<Fruit>().stream().collect(collector);
assertThat(map.isEmpty(), is(true));
}
}