SampleElements<UnhashableObject> unhashables = new Unhashables();
    Multimap<Integer, UnhashableObject> multimap = ImmutableMultimap.of(0, unhashables.e0());
    assertEquals(1, multimap.get(0).size());
    assertTrue(multimap.get(0).contains(unhashables.e0()));
  }

  public void testUnhashableMixedValues() {
    SampleElements<UnhashableObject> unhashables = new Unhashables();
    Multimap<Integer, Object> multimap =

  public E e2() {
    return e2;
  }

  public E e3() {
    return e3;
  }

  public E e4() {
    return e4;
  }

  public static class Unhashables extends SampleElements<UnhashableObject> {
    public Unhashables() {
      super(
          new UnhashableObject(1),
          new UnhashableObject(2),
          new UnhashableObject(3),
          new UnhashableObject(4),

  public E e2() {
    return e2;
  }

  public E e3() {
    return e3;
  }

  public E e4() {
    return e4;
  }

  public static class Unhashables extends SampleElements<UnhashableObject> {
    public Unhashables() {
      super(
          new UnhashableObject(1),
          new UnhashableObject(2),
          new UnhashableObject(3),
          new UnhashableObject(4),

        expectedHashCode,
        getList().hashCode());
  }

  /**
   * Returns the {@link Method} instance for {@link #testHashCode()} so that list tests on
   * unhashable objects can suppress it with {@code FeatureSpecificTestSuiteBuilder.suppressing()}.
   */
  @J2ktIncompatible
  @GwtIncompatible // reflection
  public static Method getHashCodeMethod() {

        expectedHashCode,
        getSet().hashCode());
  }

  /**
   * Returns the {@link Method} instances for the test methods in this class which call {@code
   * hashCode()} on the set values so that set tests on unhashable objects can suppress it with
   * {@code FeatureSpecificTestSuiteBuilder.suppressing()}.
   */
  @J2ktIncompatible
  @GwtIncompatible // reflection
  public static Method[] getHashCodeMethods() {

        expectedHashCode,
        getSet().hashCode());
  }

  /**
   * Returns the {@link Method} instances for the test methods in this class which call {@code
   * hashCode()} on the set values so that set tests on unhashable objects can suppress it with
   * {@code FeatureSpecificTestSuiteBuilder.suppressing()}.
   */
  @J2ktIncompatible
  @GwtIncompatible // reflection
  public static Method[] getHashCodeMethods() {

 * limitations under the License.
 */

package com.google.common.collect.testing;

import com.google.common.annotations.GwtCompatible;
import org.jspecify.annotations.Nullable;

/**
 * An unhashable object to be used in testing as values in our collections.
 *
 * @author Regina O'Dell
 */
@GwtCompatible
public class UnhashableObject implements Comparable<UnhashableObject> {
  private final int value;

        expectedHashCode,
        getList().hashCode());
  }

  /**
   * Returns the {@link Method} instance for {@link #testHashCode()} so that list tests on
   * unhashable objects can suppress it with {@code FeatureSpecificTestSuiteBuilder.suppressing()}.
   */
  @J2ktIncompatible
  @GwtIncompatible // reflection
  public static Method getHashCodeMethod() {

    suite.addTest(
        ListTestSuiteBuilder.using(new UnhashableElementsImmutableListGenerator())
            .suppressing(ListHashCodeTester.getHashCodeMethod())
            .named("ImmutableList, unhashable values")
            .withFeatures(CollectionSize.ANY, ALLOWS_NULL_QUERIES)
            .createTestSuite());
    return suite;
  }

  // Creation tests

  public void testCreation_noArgs() {

    suite.addTest(
        ListTestSuiteBuilder.using(new UnhashableElementsImmutableListGenerator())
            .suppressing(ListHashCodeTester.getHashCodeMethod())
            .named("ImmutableList, unhashable values")
            .withFeatures(CollectionSize.ANY, ALLOWS_NULL_QUERIES)
            .createTestSuite());
    return suite;
  }

  // Creation tests

  public void testCreation_noArgs() {