* CacheBuilder#from(CacheBuilderSpec)} or {@link CacheBuilder#from(String)}.
 *
 * @author Adam Winer
 * @since 12.0
 */
@SuppressWarnings("GoodTime") // lots of violations (nanosecond math)
@GwtIncompatible
public final class CacheBuilderSpec {
  /** Parses a single value. */
  private interface ValueParser {
    void parse(CacheBuilderSpec spec, String key, @Nullable String value);
  }

 * CacheBuilder#from(CacheBuilderSpec)} or {@link CacheBuilder#from(String)}.
 *
 * @author Adam Winer
 * @since 12.0
 */
@SuppressWarnings("GoodTime") // lots of violations (nanosecond math)
@GwtIncompatible
public final class CacheBuilderSpec {
  /** Parses a single value. */
  private interface ValueParser {
    void parse(CacheBuilderSpec spec, String key, @Nullable String value);
  }

  @SuppressWarnings("GoodTime") // nanos internally, should be Duration
  long getRefreshNanos() {
    return (refreshNanos == UNSET_INT) ? DEFAULT_REFRESH_NANOS : refreshNanos;
  }

  /**
   * Specifies a nanosecond-precision time source for this cache. By default, {@link
   * System#nanoTime} is used.
   *
   * <p>The primary intent of this method is to facilitate testing of caches with a fake or mock
   * time source.
   *

// formatPAXTime converts ts into a time of the form %d.%d as described in the
// PAX specification. This function is capable of negative timestamps.
func formatPAXTime(ts time.Time) (s string) {
	secs, nsecs := ts.Unix(), ts.Nanosecond()
	if nsecs == 0 {
		return strconv.FormatInt(secs, 10)
	}

	// If seconds is negative, then perform correction.
	sign := ""
	if secs < 0 {
		sign = "-"             // Remember sign

  @SuppressWarnings("GoodTime") // nanos internally, should be Duration
  long getRefreshNanos() {
    return (refreshNanos == UNSET_INT) ? DEFAULT_REFRESH_NANOS : refreshNanos;
  }

  /**
   * Specifies a nanosecond-precision time source for this cache. By default, {@link
   * System#nanoTime} is used.
   *
   * <p>The primary intent of this method is to facilitate testing of caches with a fake or mock
   * time source.
   *

      throw new ExecutionError(e);
    } finally {
      if (!success) {
        globalStatsCounter.recordLoadException(stopwatch.elapsed(NANOSECONDS));
      }
    }

    if (result == null) {
      globalStatsCounter.recordLoadException(stopwatch.elapsed(NANOSECONDS));
      throw new InvalidCacheLoadException(loader + " returned null map from loadAll");
    }

    stopwatch.stop();

      throw new ExecutionError(e);
    } finally {
      if (!success) {
        globalStatsCounter.recordLoadException(stopwatch.elapsed(NANOSECONDS));
      }
    }

    if (result == null) {
      globalStatsCounter.recordLoadException(stopwatch.elapsed(NANOSECONDS));
      throw new InvalidCacheLoadException(loader + " returned null map from loadAll");
    }

    stopwatch.stop();

    assertEquals(0, stopwatch.elapsed(NANOSECONDS));
    stopwatch.start();
    ticker.advance(3);
    assertEquals(3, stopwatch.elapsed(NANOSECONDS));
  }

  public void testReset_whileRunning() {
    ticker.advance(1);
    stopwatch.start();
    assertEquals(0, stopwatch.elapsed(NANOSECONDS));
    ticker.advance(2);
    assertEquals(2, stopwatch.elapsed(NANOSECONDS));
    stopwatch.reset();

 */

package com.google.common.util.concurrent;

import static com.google.common.base.Verify.verify;
import static com.google.common.util.concurrent.Internal.toNanosSaturated;
import static java.util.concurrent.TimeUnit.NANOSECONDS;

import com.google.common.annotations.GwtCompatible;
import com.google.common.annotations.GwtIncompatible;
import com.google.common.annotations.J2ktIncompatible;
import com.google.common.base.Preconditions;

  public void testAutoIncrementStep_returnsSameInstance() {
    FakeTicker ticker = new FakeTicker();
    assertThat(ticker.setAutoIncrementStep(10, NANOSECONDS)).isSameInstanceAs(ticker);
  }

  public void testAutoIncrementStep_nanos() {
    FakeTicker ticker = new FakeTicker().setAutoIncrementStep(10, NANOSECONDS);
    assertEquals(0, ticker.read());
    assertEquals(10, ticker.read());
    assertEquals(20, ticker.read());
  }