import java.util.Set;
import org.jspecify.annotations.NullMarked;
import org.jspecify.annotations.Nullable;

/**
 * Creates sets, containing sample elements, to be tested.
 *
 * @author Kevin Bourrillion
 */
@GwtCompatible
@NullMarked
public interface TestSetGenerator<E extends @Nullable Object> extends TestCollectionGenerator<E> {
  @Override
  Set<E> create(Object... elements);

import com.google.common.collect.testing.SampleElements.Chars;
import java.util.List;
import org.jspecify.annotations.NullMarked;

/**
 * Generates {@code List<Character>} instances for test suites.
 *
 * @author Kevin Bourrillion
 * @author Louis Wasserman
 */
@GwtCompatible
@NullMarked
public abstract class TestCharacterListGenerator implements TestListGenerator<Character> {
  @Override
  public SampleElements<Character> samples() {

/**
 * A generic JUnit test which tests {@code isEmpty()} operations on a collection. Can't be invoked
 * directly; please see {@link com.google.common.collect.testing.CollectionTestSuiteBuilder}.
 *
 * @author Kevin Bourrillion
 */
@GwtCompatible
@Ignore("test runners must not instantiate and run this directly, only via suites we build")
// @Ignore affects the Android test runner, which respects JUnit 4 annotations on JUnit 3 tests.

import java.util.Set;
import junit.framework.Test;

/**
 * Tests the {@link Set} implementations of {@link java.util}, suppressing tests that trip known
 * OpenJDK 6 bugs.
 *
 * @author Kevin Bourrillion
 */
@AndroidIncompatible // test-suite builders
public class OpenJdk6SetTests extends TestsForSetsInJavaUtil {
  public static Test suite() {
    return new OpenJdk6SetTests().allTests();
  }

  @Override

import com.google.common.collect.testing.SampleElements.Strings;
import java.util.List;
import org.jspecify.annotations.NullMarked;

/**
 * TODO: javadoc.
 *
 * @author Kevin Bourrillion
 */
@GwtCompatible
@NullMarked
public abstract class TestStringListGenerator implements TestListGenerator<String> {
  @Override
  public SampleElements<String> samples() {
    return new Strings();
  }

import com.google.common.annotations.J2ktIncompatible;
import org.jspecify.annotations.Nullable;

/**
 * Unchecked version of {@link java.util.concurrent.TimeoutException}.
 *
 * @author Kevin Bourrillion
 * @since 1.0
 */
@J2ktIncompatible
@GwtIncompatible
public class UncheckedTimeoutException extends RuntimeException {
  public UncheckedTimeoutException() {}

 * work during upgrades. However it is generally inadvisable for <i>libraries</i> (which get
 * included on users' CLASSPATHs, outside the library developers' control) to do so.
 *
 * @author Kevin Bourrillion
 */
@Retention(RetentionPolicy.CLASS)
@Target({
  ElementType.ANNOTATION_TYPE,
  ElementType.CONSTRUCTOR,
  ElementType.FIELD,
  ElementType.METHOD,
  ElementType.TYPE
})
@Documented
@GwtCompatible

 * work during upgrades. However it is generally inadvisable for <i>libraries</i> (which get
 * included on users' CLASSPATHs, outside the library developers' control) to do so.
 *
 * @author Kevin Bourrillion
 */
@Retention(RetentionPolicy.CLASS)
@Target({
  ElementType.ANNOTATION_TYPE,
  ElementType.CONSTRUCTOR,
  ElementType.FIELD,
  ElementType.METHOD,
  ElementType.TYPE
})
@Documented
@GwtCompatible

import java.util.Collection;
import junit.framework.Test;
import junit.framework.TestCase;

/**
 * Unit test for {@link MinimalCollection}.
 *
 * @author Kevin Bourrillion
 */
@AndroidIncompatible // test-suite builders
public class MinimalCollectionTest extends TestCase {
  public static Test suite() {
    return CollectionTestSuiteBuilder.using(

import java.util.Collections;
import java.util.Iterator;
import java.util.NoSuchElementException;
import junit.framework.TestCase;

/**
 * Unit test for {@link MinimalIterable}.
 *
 * @author Kevin Bourrillion
 */
@GwtCompatible
public class MinimalIterableTest extends TestCase {

  public void testOf_empty() {
    Iterable<String> iterable = MinimalIterable.<String>of();