assertFalse(Strings.validSurrogatePairAt("\uD8AB\uD8AB", 0));
    assertFalse(Strings.validSurrogatePairAt("\uDCAB\uDCAB", 0));
    assertFalse(Strings.validSurrogatePairAt("\uD8AB\uDCAB", -1));
    assertFalse(Strings.validSurrogatePairAt("\uD8AB\uDCAB", 1));
    assertFalse(Strings.validSurrogatePairAt("\uD8AB\uDCAB", -2));
    assertFalse(Strings.validSurrogatePairAt("\uD8AB\uDCAB", 2));

@GwtCompatible
public class MinimalIterableTest extends TestCase {

  public void testOf_empty() {
    Iterable<String> iterable = MinimalIterable.<String>of();
    Iterator<String> iterator = iterable.iterator();
    assertFalse(iterator.hasNext());
    assertThrows(NoSuchElementException.class, () -> iterator.next());
    assertThrows(IllegalStateException.class, () -> iterable.iterator());
  }

  public void testOf_one() {

      assertFalse(testInstance.contains('b', 2));
      assertFalse(testInstance.contains('c', 3));
    }
  }

  public void testContainsColumn() {
    for (ImmutableTable<Character, Integer, String> testInstance : getTestInstances()) {
      assertTrue(testInstance.containsColumn(1));
      assertTrue(testInstance.containsColumn(2));
      assertFalse(testInstance.containsColumn(3));
    }
  }

    // Later attempts to set the future should return false.
    assertFalse(future.set("x"));
    assertFalse(future.setException(new Exception("bar")));
    assertFalse(future.setFuture(SettableFuture.<String>create()));
    // Check that the future has been set properly.
    assertFalse(future.isDone());
    assertFalse(future.isCancelled());
    assertThrows(TimeoutException.class, () -> future.get(0, MILLISECONDS));

    for (LoadingCache<Object, Object> cache : caches()) {
      Set<Object> keys = cache.asMap().keySet();
      assertFalse(keys.remove(null));
      assertFalse(keys.remove(6));
      assertFalse(keys.remove(-6));
      assertFalse(keys.removeAll(asList(null, 0, 15, 1500)));
      assertFalse(keys.retainAll(asList(null, 0, 15, 1500)));
      checkEmpty(keys);
      checkEmpty(cache);
    }
  }

    for (LoadingCache<Object, Object> cache : caches()) {
      Set<Object> keys = cache.asMap().keySet();
      assertFalse(keys.remove(null));
      assertFalse(keys.remove(6));
      assertFalse(keys.remove(-6));
      assertFalse(keys.removeAll(asList(null, 0, 15, 1500)));
      assertFalse(keys.retainAll(asList(null, 0, 15, 1500)));
      checkEmpty(keys);
      checkEmpty(cache);
    }
  }

    @Test
    public void testIsNotArray() {
        assertTrue(ArrayUtil.isNotArray(null));
        assertTrue(ArrayUtil.isNotArray("hoge"));
        assertFalse(ArrayUtil.isNotArray(new Object[] {}));
        assertFalse(ArrayUtil.isNotArray(new Object[] { "" }));
        assertFalse(ArrayUtil.isNotArray(new Object[] { "aaa" }));
    }

    assertFalse(matcher.matches(s.charAt(0)));
    assertFalse(matcher.apply(s.charAt(0)));
    assertEquals(-1, matcher.indexIn(s));
    assertEquals(-1, matcher.indexIn(s, 0));
    assertEquals(-1, matcher.indexIn(s, 1));
    assertEquals(-1, matcher.lastIndexIn(s));
    assertFalse(matcher.matchesAnyOf(s));
    assertFalse(matcher.matchesAllOf(s));

  }

  public void testContains_no() {
    assertFalse("containsValue(notPresent) should return false", getMap().containsValue(v3()));
  }

  @MapFeature.Require(ALLOWS_NULL_VALUE_QUERIES)
  public void testContains_nullNotContainedButAllowed() {
    assertFalse("containsValue(null) should return false", getMap().containsValue(null));
  }

        assertFalse(enforceVersion("[2.0.6,)", actualVersion));
        assertFalse(enforceVersion("[2.0.6]", actualVersion));
        assertTrue(enforceVersion("[2.0,2.1]", actualVersion));
        assertFalse(enforceVersion("[2.0,2.0.3]", actualVersion));
        assertTrue(enforceVersion("[2.0,2.0.5]", actualVersion));
        assertFalse(enforceVersion("[2.0,2.0.5)", actualVersion));
    }