TestDataStore dataStore = new TestDataStore("TestStore");
        dataStoreFactory.add("testName", dataStore);

        // Verify data store is registered with both the given name and class simple name
        assertNotNull(dataStoreFactory.getDataStore("testName"));
        assertNotNull(dataStoreFactory.getDataStore("testname")); // case insensitive
        assertNotNull(dataStoreFactory.getDataStore("TestDataStore"));

import java.util.LinkedList;
import java.util.Queue;
import junit.framework.TestCase;
import org.jspecify.annotations.NullUnmarked;
import org.jspecify.annotations.Nullable;

/**
 * Tests for {@link Synchronized#queue} and {@link Queues#synchronizedQueue}.
 *
 * @author Kurt Alfred Kluever
 */
@NullUnmarked
public class SynchronizedQueueTest extends TestCase {

  protected Queue<String> create() {

import java.security.NoSuchAlgorithmException;
import java.util.Arrays;
import junit.framework.TestCase;
import org.jspecify.annotations.NullUnmarked;

/**
 * Tests for the MessageDigestHashFunction.
 *
 * @author Kurt Alfred Kluever
 */
@NullUnmarked
public class MessageDigestHashFunctionTest extends TestCase {
  private static final ImmutableSet<String> INPUTS = ImmutableSet.of("", "Z", "foobar");

import java.util.concurrent.ExecutorService;
import junit.framework.TestCase;
import org.jspecify.annotations.NullUnmarked;

/**
 * Test case for {@link ListenableFutureTask}.
 *
 * @author Sven Mawson
 */
@NullUnmarked
@GwtIncompatible
@J2ktIncompatible
public class ListenableFutureTaskTest extends TestCase {

  private ExecutorService exec;

        // Need to include space for actual string data
        int stringDataStart = 28; // After the referral structure
        String testPath = "\\server\\share";
        byte[] pathBytes = testPath.getBytes(java.nio.charset.StandardCharsets.UTF_16LE);
        int bufferSize = stringDataStart + pathBytes.length + 2; // +2 for null terminator
        byte[] buffer = new byte[bufferSize];

import com.google.common.testing.FakeTicker;
import junit.framework.TestCase;
import org.jspecify.annotations.NullUnmarked;

/**
 * Tests relating to automatic cache refreshing.
 *
 * @author Charles Fry
 */
@NullUnmarked
public class CacheRefreshTest extends TestCase {
  public void testAutoRefresh() {
    FakeTicker ticker = new FakeTicker();

import java.util.stream.DoubleStream;
import java.util.stream.IntStream;
import java.util.stream.LongStream;
import junit.framework.TestCase;
import org.jspecify.annotations.NullMarked;

/** Tests for {@code CollectSpliterators}. */
@GwtCompatible
@NullMarked
public class CollectSpliteratorsTest extends TestCase {
  @GwtIncompatible
  public void testMap() {
    SpliteratorTester.of(
            () ->

import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.CountDownLatch;
import junit.framework.TestCase;
import org.jspecify.annotations.NullUnmarked;

/**
 * @author Charles Fry
 */
@GwtCompatible
@J2ktIncompatible // MapMaker
@NullUnmarked
public class MapMakerTest extends TestCase {
  @GwtIncompatible // NullPointerTester
  public void testNullParameters() throws Exception {

import com.google.common.annotations.J2ktIncompatible;
import junit.framework.AssertionFailedError;
import junit.framework.TestCase;
import org.jspecify.annotations.NullUnmarked;

/** Unit test for {@link com.google.common.base.Verify}. */
@GwtCompatible
@NullUnmarked
public class VerifyTest extends TestCase {
  public void testVerify_simple_success() {
    verify(true);
  }

  public void testVerify_simple_failure() {

import java.util.List;
import java.util.NoSuchElementException;
import junit.framework.TestCase;
import org.jspecify.annotations.NullUnmarked;

/**
 * Base class for {@link RangeSet} tests.
 *
 * @author Louis Wasserman
 */
@GwtIncompatible // TreeRangeSet
@NullUnmarked
public abstract class AbstractRangeSetTest extends TestCase {
  public static void testInvariants(RangeSet<?> rangeSet) {
    testInvariantsInternal(rangeSet);