stopwatch.start();
    assertThrows(IllegalStateException.class, stopwatch::start);
    assertTrue(stopwatch.isRunning());
  }

  public void testStop() {
    stopwatch.start();
    assertSame(stopwatch, stopwatch.stop());
    assertFalse(stopwatch.isRunning());
  }

  public void testStop_new() {
    assertThrows(IllegalStateException.class, stopwatch::stop);
    assertFalse(stopwatch.isRunning());
  }

 * events to it.
 *
 * <p>Two subscribers are equivalent when they refer to the same method on the same object (not
 * class). This property is used to ensure that no subscriber method is registered more than once.
 *
 * @author Colin Decker
 */
@ElementTypesAreNonnullByDefault
class Subscriber {

  /** Creates a {@code Subscriber} for {@code method} on {@code listener}. */

## Let's Encrypt

Antes de Let's Encrypt, esses certificados HTTPS eram vendidos por terceiros confiáveis.

O processo de aquisição de um desses certificados costumava ser complicado, exigia bastante papelada e os certificados eram bastante caros.

import org.dbflute.utflute.core.PlainTestCase;

public class RobotsTxtHelperTest extends PlainTestCase {
    public RobotsTxtHelper robotsTxtHelper;

    @Override
    protected void setUp() throws Exception {
        super.setUp();
        StandardCrawlerContainer container = new StandardCrawlerContainer().singleton("robotsTxtHelper", RobotsTxtHelper.class);
        robotsTxtHelper = container.getComponent("robotsTxtHelper");
    }

    String prefix =
        (useMonitor ? "com.google.common.util.concurrent.MonitorBased" : "java.util.concurrent.");
    String className = prefix + queueType + "BlockingQueue";
    Constructor<?> constructor = Class.forName(className).getConstructor(int.class);
    queue = (BlockingQueue<String>) constructor.newInstance(capacity);

    strings = new String[capacity];
    for (int i = 0; i < capacity; i++) {
      strings[i] = String.valueOf(Math.random());

import org.codelibs.core.exception.ClUnsupportedOperationException;
import org.junit.Rule;
import org.junit.Test;
import org.junit.rules.ExpectedException;

/**
 * @author wyukawa
 *
 */
public class EmptyIteratorTest {

    /**
     * @see org.junit.rules.ExpectedException
     */
    @Rule
    public ExpectedException exception = ExpectedException.none();

    /**
     * Test method for

  public void testInvalidIntRange() {
    assertThrows(IllegalArgumentException.class, () -> ContiguousSet.closed(2, 1));
    assertThrows(IllegalArgumentException.class, () -> ContiguousSet.closedOpen(2, 1));
  }

  public void testInvalidLongRange() {
    assertThrows(IllegalArgumentException.class, () -> ContiguousSet.closed(2L, 1L));
    assertThrows(IllegalArgumentException.class, () -> ContiguousSet.closedOpen(2L, 1L));
  }

import com.google.common.eventbus.Subscribe;
import com.google.common.eventbus.outside.AnnotatedNotAbstractInSuperclassTest.SubClass;
import java.util.List;

public class AnnotatedNotAbstractInSuperclassTest extends AbstractEventBusTest<SubClass> {
  static class SuperClass {
    final List<Object> notOverriddenInSubclassEvents = Lists.newArrayList();
    final List<Object> overriddenNotAnnotatedInSubclassEvents = Lists.newArrayList();

 *
 * @author George van den Driessche
 */
@GwtCompatible
@Ignore // Affects only Android test runner, which respects JUnit 4 annotations on JUnit 3 tests.
@SuppressWarnings("JUnit4ClassUsedInJUnit3")
public class CollectionClearTester<E> extends AbstractCollectionTester<E> {
  @CollectionFeature.Require(SUPPORTS_REMOVE)
  public void testClear() {
    collection.clear();

import java.io.Closeable;
import java.util.concurrent.ExecutionException;

/** Tests for {@link ClosingFuture} that exercise {@link ClosingFuture#finishToFuture()}. */
public class ClosingFutureFinishToFutureTest extends AbstractClosingFutureTest {
  public void testFinishToFuture_throwsIfCalledTwice() throws Exception {
    ClosingFuture<Closeable> closingFuture =
        ClosingFuture.submit(