import com.google.common.annotations.GwtCompatible;
import java.math.BigInteger;
import java.math.RoundingMode;
import junit.framework.TestCase;

/**
 * Unit tests for {@link MathPreconditions}.
 *
 * @author Ben Yu
 */
@GwtCompatible
public class MathPreconditionsTest extends TestCase {

  public void testCheckPositive_zeroInt() {
    assertThrows(IllegalArgumentException.class, () -> MathPreconditions.checkPositive("int", 0));

import java.util.HashMap;
import java.util.Map;
import java.util.Map.Entry;
import java.util.Set;
import junit.framework.TestCase;
import org.checkerframework.checker.nullness.qual.Nullable;

/**
 * Tests for {@code Synchronized#map}.
 *
 * @author Mike Bostock
 */
public class SynchronizedMapTest extends TestCase {
  public final Object mutex = new Object[0]; // something Serializable

  protected <K, V> Map<K, V> create() {

import java.util.List;
import java.util.Set;
import junit.framework.Test;
import junit.framework.TestCase;
import junit.framework.TestSuite;

/**
 * Tests for CompactLinkedHashSet.
 *
 * @author Dimitris Andreou
 */
@GwtIncompatible // java.util.Arrays#copyOf(Object[], int), java.lang.reflect.Array
public class CompactLinkedHashSetTest extends TestCase {
  public static Test suite() {
    List<Feature<?>> allFeatures =

import com.google.common.testing.NullPointerTester;
import java.util.Set;
import junit.framework.TestCase;

/**
 * Unit test for {@link Primitives}.
 *
 * @author Kevin Bourrillion
 */
@GwtCompatible(emulated = true)
public class PrimitivesTest extends TestCase {
  public void testIsWrapperType() {
    assertThat(Primitives.isWrapperType(Void.class)).isTrue();

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

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

  public void testVerify_simple_failure() {

import com.google.common.annotations.J2ktIncompatible;
import com.google.common.testing.NullPointerTester;
import junit.framework.TestCase;

/** Tests for {@link MoreObjects}. */
@GwtCompatible(emulated = true)
public class MoreObjectsTest extends TestCase {
  public void testFirstNonNull_withNonNull() {
    String s1 = "foo";
    String s2 = MoreObjects.firstNonNull(s1, "bar");
    assertSame(s1, s2);

import com.google.common.annotations.J2ktIncompatible;
import com.google.common.testing.NullPointerTester;
import junit.framework.TestCase;

/** Tests for {@link MoreObjects}. */
@GwtCompatible(emulated = true)
public class MoreObjectsTest extends TestCase {
  public void testFirstNonNull_withNonNull() {
    String s1 = "foo";
    String s2 = MoreObjects.firstNonNull(s1, "bar");
    assertSame(s1, s2);

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

/**
 * Tests for {@link UnmodifiableIterator}.
 *
 * @author Jared Levy
 */
@GwtCompatible
@ElementTypesAreNonnullByDefault
public class UnmodifiableIteratorTest extends TestCase {

  @SuppressWarnings("DoNotCall")
  public void testRemove() {
    final String[] array = {"a", "b", "c"};

import java.util.concurrent.CancellationException;
import java.util.concurrent.ExecutionException;
import junit.framework.TestCase;
import org.checkerframework.checker.nullness.qual.Nullable;

/** Unit tests for {@link Futures#getDone}. */
@GwtCompatible
public class FuturesGetDoneTest extends TestCase {
  public void testSuccessful() throws ExecutionException {
    assertThat(getDone(immediateFuture("a"))).isEqualTo("a");
  }

import java.nio.channels.spi.AbstractInterruptibleChannel;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.locks.LockSupport;
import junit.framework.TestCase;
import org.checkerframework.checker.nullness.qual.Nullable;

public final class InterruptibleTaskTest extends TestCase {

  // Regression test for a deadlock where a task could be stuck busy waiting for the task to
  // transition to DONE