1 package net.pterodactylus.sone.utils;
3 import java.util.Arrays;
6 import com.google.common.base.Optional;
7 import com.google.common.collect.FluentIterable;
8 import org.hamcrest.MatcherAssert;
9 import org.hamcrest.Matchers;
10 import org.junit.Test;
13 * Unit test for {@link Optionals}.
15 * @author <a href="mailto:bombe@pterodactylus.net">David ‘Bombe’ Roden</a>
17 public class OptionalsTest {
19 private final Object object1 = new Object();
20 private final Object object2 = new Object();
21 private final Object object3 = new Object();
24 public void canCreateOptionals() {
29 public void isPresentFiltersCorrectOptionals() {
30 List<Optional<Object>> optionals = Arrays.asList(
31 Optional.of(object1), Optional.absent(),
32 Optional.of(object2), Optional.absent(),
33 Optional.of(object3), Optional.absent()
35 List<Optional<Object>> filteredOptionals =
36 FluentIterable.from(optionals).filter(Optionals.isPresent()).toList();
37 MatcherAssert.assertThat(filteredOptionals, Matchers.contains(
38 Optional.of(object1), Optional.of(object2), Optional.of(object3)));
42 public void getReturnsCorrectValues() {
43 List<Optional<Object>> optionals = Arrays.asList(
48 List<Object> objects = FluentIterable.from(optionals).transform(Optionals.get()).toList();
49 MatcherAssert.assertThat(objects, Matchers.contains(object1, object2, object3));