import java.util.concurrent.ThreadPoolExecutor.CallerRunsPolicy;
import java.util.concurrent.TimeUnit;

/**
 * Factory methods for {@link ExecutorService} for testing.
 *
 * @author Chris Nokleberg
 * @since 14.0
 */
@GwtIncompatible
public final class TestingExecutors {
  private TestingExecutors() {}

  /**
   * Returns a {@link ScheduledExecutorService} that never executes anything.
   *

func (m *MetricValues) SetHistogram(name MetricName, hist *prometheus.HistogramVec,
	filterByLabels map[string]set.StringSet, renameLabels map[string]string, bucketFilter []string,
	extraLabels ...string,
) {
	if _, ok := m.descriptors[name]; !ok {
		panic(fmt.Sprintf("metric has no description: %s", name))
	}
	dummyDesc := MetricDescription{}
	metricsV2 := getHistogramMetrics(hist, dummyDesc, false, false)
mainLoop:

 * A generic JUnit test which tests {@code clear()} operations on a map. Can't be invoked directly;
 * please see {@link com.google.common.collect.testing.MapTestSuiteBuilder}.
 *
 * @author George van den Driessche
 * @author Chris Povirk
 */
@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.

/**
 * A class for reading lines of text. Provides the same functionality as {@link
 * java.io.BufferedReader#readLine()} but for all {@link Readable} objects, not just instances of
 * {@link Reader}.
 *
 * @author Chris Nokleberg
 * @since 1.0
 */
@J2ktIncompatible
@GwtIncompatible
public final class LineReader {
  private final Readable readable;
  private final @Nullable Reader reader;

import org.junit.Ignore;

/**
 * A generic JUnit test which tests {@code add(Object)} operations on a list. Can't be invoked
 * directly; please see {@link com.google.common.collect.testing.ListTestSuiteBuilder}.
 *
 * @author Chris Povirk
 */
@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.

 * directly; please see {@link com.google.common.collect.testing.CollectionTestSuiteBuilder}.
 *
 * @author Kevin Bourrillion
 * @author Chris Povirk
 */
@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.ArrayList;
import java.util.Arrays;
import java.util.List;
import org.jspecify.annotations.NullUnmarked;

/**
 * Unit tests for {@link LineBuffer} and {@link LineReader}.
 *
 * @author Chris Nokleberg
 */
@AndroidIncompatible // occasionally very slow
@NullUnmarked
public class LineBufferTest extends IoTestCase {

  public void testProcess() throws IOException {
    bufferHelper("");

import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import org.jspecify.annotations.NullUnmarked;

/**
 * Unit tests for {@link LineBuffer} and {@link LineReader}.
 *
 * @author Chris Nokleberg
 */
@AndroidIncompatible // occasionally very slow
@NullUnmarked
public class LineBufferTest extends IoTestCase {

  public void testProcess() throws IOException {
    bufferHelper("");

 * An {@link ExecutorService} that returns {@link ListenableFuture} instances. To create an instance
 * from an existing {@link ExecutorService}, call {@link
 * MoreExecutors#listeningDecorator(ExecutorService)}.
 *
 * @author Chris Povirk
 * @since 10.0
 */
@DoNotMock(
    "Use TestingExecutors.sameThreadScheduledExecutor, or wrap a real Executor from "
        + "java.util.concurrent.Executors with MoreExecutors.listeningDecorator")
@GwtIncompatible

import org.junit.Ignore;

/**
 * A generic JUnit test which tests conditional {@code setCount()} operations on a multiset. Can't
 * be invoked directly; please see {@link MultisetTestSuiteBuilder}.
 *
 * @author Chris Povirk
 */
@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.