@Override
      public byte[] getExpected(byte[] data) {
        return factory.getExpected(new String(data, UTF_8)).getBytes(UTF_8);
      }

      @Override
      public void tearDown() throws IOException {
        factory.tearDown();
      }
    };
  }

  public static CharSourceFactory asCharSourceFactory(final ByteSourceFactory factory) {
    checkNotNull(factory);
    return new CharSourceFactory() {

    return self();
  }

  public Runnable getSetUp() {
    return setUp;
  }

  @CanIgnoreReturnValue
  public B withTearDown(Runnable tearDown) {
    this.tearDown = tearDown;
    return self();
  }

  public Runnable getTearDown() {
    return tearDown;
  }

  // Features

  private final Set<Feature<?>> features = new LinkedHashSet<>();

  /**

      @Override
      public byte[] getExpected(byte[] data) {
        return factory.getExpected(new String(data, UTF_8)).getBytes(UTF_8);
      }

      @Override
      public void tearDown() throws IOException {
        factory.tearDown();
      }
    };
  }

  public static CharSourceFactory asCharSourceFactory(final ByteSourceFactory factory) {
    checkNotNull(factory);
    return new CharSourceFactory() {

  private @Nullable Runnable tearDown;

  // public so that it can be referenced in generated GWT tests.
  @Override
  public void setUp() throws Exception {
    if (setUp != null) {
      setUp.run();
    }
  }

  // public so that it can be referenced in generated GWT tests.
  @Override
  public void tearDown() throws Exception {
    if (tearDown != null) {
      tearDown.run();
    }
  }

  private @Nullable Runnable tearDown;

  // public so that it can be referenced in generated GWT tests.
  @Override
  public void setUp() throws Exception {
    if (setUp != null) {
      setUp.run();
    }
  }

  // public so that it can be referenced in generated GWT tests.
  @Override
  public void tearDown() throws Exception {
    if (tearDown != null) {
      tearDown.run();
    }
  }

    return self();
  }

  public Runnable getSetUp() {
    return setUp;
  }

  @CanIgnoreReturnValue
  public B withTearDown(Runnable tearDown) {
    this.tearDown = tearDown;
    return self();
  }

  public Runnable getTearDown() {
    return tearDown;
  }

  // Features

  private final Set<Feature<?>> features = new LinkedHashSet<>();

  /**

    @Override
    public void setUp() throws Exception {
        super.setUp();
        groovyEngine = new GroovyEngine();
    }

    @Override
    public void tearDown() throws Exception {
        ComponentUtil.setFessConfig(null);
        super.tearDown();
    }

    public void test_evaluate() {
        final Map<String, Object> params = new HashMap<>();
        assertNull(groovyEngine.evaluate("", params));

          public void run() {
            listenerLatch.countDown();
          }
        },
        directExecutor());
  }

  @Override
  protected void tearDown() throws Exception {
    if (exec != null) {
      exec.shutdown();
    }

    super.tearDown();
  }

  public void testListenerDoesNotRunUntilTaskCompletes() throws Exception {

    // Test default state of not started.

import static com.google.common.truth.Truth.assertThat;
import static java.util.concurrent.TimeUnit.MILLISECONDS;
import static org.junit.Assert.assertThrows;

import com.google.common.testing.TearDown;
import com.google.common.testing.TearDownStack;
import com.google.common.util.concurrent.testing.TestingExecutors;
import java.lang.Thread.UncaughtExceptionHandler;
import java.util.concurrent.CountDownLatch;

import static junit.framework.Assert.assertNotNull;
import static junit.framework.Assert.assertNull;
import static junit.framework.Assert.assertSame;

import com.google.common.testing.TearDown;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.util.concurrent.SynchronousQueue;
import java.util.concurrent.TimeoutException;
import junit.framework.AssertionFailedError;