+package net.pterodactylus.sone.utils;
+
+import java.util.Arrays;
+import java.util.List;
+
+import com.google.common.base.Optional;
+import com.google.common.collect.FluentIterable;
+import org.hamcrest.MatcherAssert;
+import org.hamcrest.Matchers;
+import org.junit.Test;
+
+/**
+ * Unit test for {@link Optionals}.
+ *
+ * @author <a href="mailto:bombe@pterodactylus.net">David ‘Bombe’ Roden</a>
+ */
+public class OptionalsTest {
+
+ private final Object object1 = new Object();
+ private final Object object2 = new Object();
+ private final Object object3 = new Object();
+
+ @Test
+ public void canCreateOptionals() {
+ new Optionals();
+ }
+
+ @Test
+ public void isPresentFiltersCorrectOptionals() {
+ List<Optional<Object>> optionals = Arrays.asList(
+ Optional.of(object1), Optional.absent(),
+ Optional.of(object2), Optional.absent(),
+ Optional.of(object3), Optional.absent()
+ );
+ List<Optional<Object>> filteredOptionals =
+ FluentIterable.from(optionals).filter(Optionals.isPresent()).toList();
+ MatcherAssert.assertThat(filteredOptionals, Matchers.contains(
+ Optional.of(object1), Optional.of(object2), Optional.of(object3)));
+ }
+
+ @Test
+ public void getReturnsCorrectValues() {
+ List<Optional<Object>> optionals = Arrays.asList(
+ Optional.of(object1),
+ Optional.of(object2),
+ Optional.of(object3)
+ );
+ List<Object> objects = FluentIterable.from(optionals).transform(Optionals.get()).toList();
+ MatcherAssert.assertThat(objects, Matchers.contains(object1, object2, object3));
+ }
+
+}