import org.jspecify.annotations.Nullable;

/**
 * Unit test for {@link Equivalence}.
 *
 * @author Jige Yu
 */
@NullMarked
@GwtCompatible
public class EquivalenceTest extends TestCase {
  public void testPairwiseEquivalent() {
    EquivalenceTester.of(Equivalence.equals().<String>pairwise())
        .addEquivalenceGroup(ImmutableList.<String>of())
        .addEquivalenceGroup(ImmutableList.of("a"))