@CanIgnoreReturnValue
  public RelationshipTester<T> addRelatedGroup(Iterable<? extends T> group) {
    groups.add(ImmutableList.copyOf(group));
    return this;
  }

  public void test() {
    for (int groupNumber = 0; groupNumber < groups.size(); groupNumber++) {
      ImmutableList<T> group = groups.get(groupNumber);
      for (int itemNumber = 0; itemNumber < group.size(); itemNumber++) {

 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.google.common.io;

import com.google.common.collect.ImmutableList;
import java.io.FilterReader;
import java.io.IOException;
import java.io.Reader;
import java.io.StringReader;
import junit.framework.TestCase;
import org.jspecify.annotations.NullUnmarked;

/**

      return of();
    }
    ImmutableMap.Builder<K, ImmutableList<V>> builder =
        new ImmutableMap.Builder<>(mapEntries.size());
    int size = 0;

    for (Entry<K, ImmutableCollection.Builder<V>> entry : mapEntries) {
      K key = entry.getKey();
      ImmutableList.Builder<V> values = (ImmutableList.Builder<V>) entry.getValue();
      ImmutableList<V> list =

public class AbstractInvocationHandlerTest extends TestCase {

  private static final ImmutableList<String> LIST1 = ImmutableList.of("one", "two");
  private static final ImmutableList<String> LIST2 = ImmutableList.of("three");

  public void testDelegate() {
    assertEquals(LIST1, ImmutableList.copyOf(newDelegatingList(LIST1)));
    assertEquals(LIST1, ImmutableList.copyOf(newDelegatingListWithEquals(LIST1)));
  }

  public void testToString() {

        }
      };

  private static final Long LONG_VAL = 12345L;
  private static final String STR_VAL = "12345";

  private static final ImmutableList<String> STRINGS = ImmutableList.of("123", "456");
  private static final ImmutableList<Long> LONGS = ImmutableList.of(123L, 456L);

  public void testConverter() {
    assertEquals(LONG_VAL, STR_TO_LONG.convert(STR_VAL));

 *       typically because the type forbids nullable type arguments: For example, {@code
 *       ImmutableList.get} returns {@code E}, but that value is never {@code null}. (Accordingly,
 *       {@code ImmutableList} is declared to forbid {@code ImmutableList<@Nullable String>}.)
 *   <li>methods whose return type is a type variable but which can return {@code null} regardless

 *       typically because the type forbids nullable type arguments: For example, {@code
 *       ImmutableList.get} returns {@code E}, but that value is never {@code null}. (Accordingly,
 *       {@code ImmutableList} is declared to forbid {@code ImmutableList<@Nullable String>}.)
 *   <li>methods whose return type is a type variable but which can return {@code null} regardless

      }
    }
  }

  private static ImmutableList<String> sortedNumberNames(int i, int j) {
    return ImmutableList.copyOf(SORTED_NUMBER_NAMES.subList(i, j));
  }

  private static final ImmutableList<String> NUMBER_NAMES =
      ImmutableList.of("one", "two", "three", "four", "five", "six", "seven");

  private static final ImmutableList<String> SORTED_NUMBER_NAMES =

      ImmutableSet.copyOf(RoundingMode.values());

  static final ImmutableList<RoundingMode> ALL_SAFE_ROUNDING_MODES =
      ImmutableList.of(DOWN, UP, FLOOR, CEILING, HALF_EVEN, HALF_UP, HALF_DOWN);

  // Exponents to test for the pow() function.
  static final ImmutableList<Integer> EXPONENTS =
      ImmutableList.of(0, 1, 2, 3, 4, 7, 10, 15, 20, 25, 40, 70);

    runConcurrentlyMutatedTest(elements(1, 2, 3), ops(remove(), remove()), wrap);
  }

  private static ImmutableList<Integer> elements(Integer... elements) {
    return ImmutableList.copyOf(elements);
  }

  private static ImmutableList<ListFrobber> ops(ListFrobber... elements) {
    return ImmutableList.copyOf(elements);
  }

  public void testCopyOf_concurrentlyMutatedList() {