assertEquals(-1, Iterables.indexOf(list, equalTo("jack")));
  }

  public void testIndexOf_withDuplicates() {
    List<String> list = Lists.newArrayList("mary", "bob", "bob", "bob", "sam");
    assertEquals(0, Iterables.indexOf(list, equalTo("mary")));
    assertEquals(1, Iterables.indexOf(list, equalTo("bob")));
    assertEquals(4, Iterables.indexOf(list, equalTo("sam")));

  public void testOf_null() {
    assertThrows(NullPointerException.class, () -> Optional.of(null));
  }

  public void testFromNullable() {
    Optional<String> optionalName = Optional.fromNullable("bob");
    assertThat(optionalName.get()).isEqualTo("bob");
  }

  public void testFromNullable_null() {
    // not promised by spec, but easier to test
    assertThat(Optional.fromNullable(null)).isSameInstanceAs(Optional.absent());
  }

import org.junit.After;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.JUnit4;

/**
 * Unit test for {@link FinalizableReferenceQueue}.
 *
 * @author Bob Lee
 */
@J2ktIncompatible
@GwtIncompatible
@RunWith(JUnit4.class)
@NullUnmarked
public class FinalizableReferenceQueueTest {

  private @Nullable FinalizableReferenceQueue frq;

  @After

        params1.put("name", "Alice");

        final Map<String, Object> params2 = new HashMap<>();
        params2.put("name", "Bob");

        assertEquals("Alice", groovyEngine.evaluate("return name", params1));
        assertEquals("Bob", groovyEngine.evaluate("return name", params2));
        assertEquals("Alice", groovyEngine.evaluate("return name", params1));
    }

    /**

                    return new SampleElements<>(
                        mapEntry("a", (Collection<String>) ImmutableSortedSet.of("alex")),
                        mapEntry("b", (Collection<String>) ImmutableSortedSet.of("bob", "bagel")),
                        mapEntry("c", (Collection<String>) ImmutableSortedSet.of("carl", "carol")),
                        mapEntry("d", (Collection<String>) ImmutableSortedSet.of("david", "dead")),

 * garbage-collected. That's why we are careful to make a {@code Runnable} that does not have a
 * reference to any {@code MyServer} instance.
 *
 * @author Bob Lee
 * @since 2.0
 */
@J2ktIncompatible
@GwtIncompatible
public class FinalizableReferenceQueue implements Closeable {
  /*

 * garbage-collected. That's why we are careful to make a {@code Runnable} that does not have a
 * reference to any {@code MyServer} instance.
 *
 * @author Bob Lee
 * @since 2.0
 */
@J2ktIncompatible
@GwtIncompatible
public class FinalizableReferenceQueue implements Closeable {
  /*

                    return new SampleElements<>(
                        mapEntry("a", (Collection<String>) ImmutableSortedSet.of("alex")),
                        mapEntry("b", (Collection<String>) ImmutableSortedSet.of("bob", "bagel")),
                        mapEntry("c", (Collection<String>) ImmutableSortedSet.of("carl", "carol")),
                        mapEntry("d", (Collection<String>) ImmutableSortedSet.of("david", "dead")),

  }

  public void testIndexOf_consumedDataNoMatch() {
    Iterator<String> iterator = Lists.newArrayList("manny", "mo", "mo", "jack").iterator();
    assertEquals(-1, Iterators.indexOf(iterator, equalTo("bob")));
    assertFalse(iterator.hasNext());
  }

  @SuppressWarnings({"deprecation", "InlineMeInliner"}) // test of a deprecated method
  public void testUnmodifiableIteratorShortCircuit() {

  }

  public void testIndexOf_consumedDataNoMatch() {
    Iterator<String> iterator = Lists.newArrayList("manny", "mo", "mo", "jack").iterator();
    assertEquals(-1, Iterators.indexOf(iterator, equalTo("bob")));
    assertFalse(iterator.hasNext());
  }

  @SuppressWarnings({"deprecation", "InlineMeInliner"}) // test of a deprecated method
  public void testUnmodifiableIteratorShortCircuit() {