.containsNoneOf(Object.class, new TypeToken<Iterable<Number>>() {}.getType());
    assertThat(new TypeToken<List<? extends Number>>() {}.isSupertypeOf(fieldType)).isTrue();
    assertThat(new TypeToken<List<? extends Iterable<?>>>() {}.isSupertypeOf(fieldType)).isTrue();
    assertThat(new TypeToken<List<? extends Iterable<Number>>>() {}.isSupertypeOf(fieldType))
        .isFalse();
  }

  public void testArrayClassPreserved() {

    graph.putEdgeValue(1, 2, "A");
    assertThat(graph.hasEdgeConnecting(EndpointPair.unordered(1, 2))).isTrue();
  }

  @Test
  public void hasEdgeConnecting_undirected_backwards() {
    graph = ValueGraphBuilder.undirected().build();
    graph.putEdgeValue(1, 2, "A");
    assertThat(graph.hasEdgeConnecting(EndpointPair.unordered(2, 1))).isTrue();
  }

  @Test
  public void hasEdgeConnecting_undirected_mismatch() {

        Future<?> possiblyIgnoredError = executor.submit(task);
      }
      awaitUnchecked(barrier);
      assertThat(future.isDone()).isTrue();
      // inspect state and ensure it is correct!
      // asserts that all get calling threads received the same value
      Object result = Iterables.getOnlyElement(finalResults);

    assertThat(encoding.canDecode(encoded)).isTrue();
    assertThat(encoding.decode(encoded)).isEqualTo(decoded.getBytes(UTF_8));
  }

  private static void testDecodesByBytes(BaseEncoding encoding, String encoded, byte[] decoded) {
    assertThat(encoding.canDecode(encoded)).isTrue();
    assertThat(encoding.decode(encoded)).isEqualTo(decoded);
  }

    String result = proxy.sleepThenReturnInput("x");

    assertThat(result).isEqualTo("x");
    assertThat(stopwatch.elapsed(MILLISECONDS)).isIn(Range.closed(DELAY_MS, ENOUGH_MS));
    assertThat(target.finished).isTrue();
  }

  public void testNewProxy_goodMethodWithNotEnoughTime() throws Exception {
    SampleImpl target = new SampleImpl(9999);
    Sample proxy = service.newProxy(target, Sample.class, NOT_ENOUGH_MS, MILLISECONDS);

import assertk.assertions.contains
import assertk.assertions.containsExactly
import assertk.assertions.isEqualTo
import assertk.assertions.isNotNull
import assertk.assertions.isNull
import assertk.assertions.isTrue
import assertk.assertions.prop
import java.io.IOException
import java.net.HttpURLConnection
import java.net.ProtocolException
import java.util.concurrent.BlockingQueue
import java.util.concurrent.CountDownLatch

    FileBackedOutputStream out =
        new FileBackedOutputStream(0, /* resetWhenGarbageCollected= */ true);
    out.write(new byte[10]);
    File file = out.getFile();
    assertThat(file.exists()).isTrue();
    reachabilityFence(out); // not sure if this is necessary even in theory
    return new FileAndWeakByteSource(file, new WeakReference<>(out.asByteSource()));
  }

import assertk.assertions.isGreaterThan
import assertk.assertions.isGreaterThanOrEqualTo
import assertk.assertions.isNotEqualTo
import assertk.assertions.isNotNull
import assertk.assertions.isNull
import assertk.assertions.isTrue
import java.io.BufferedReader
import java.io.Closeable
import java.io.IOException
import java.io.InputStreamReader
import java.net.ConnectException
import java.net.HttpURLConnection
import java.net.ProtocolException

    assertThat(Thread.interrupted()).isTrue();
    stats = cache.stats();
    assertThat(stats.missCount()).isEqualTo(2);
    assertThat(stats.loadSuccessCount()).isEqualTo(0);
    assertThat(stats.loadExceptionCount()).isEqualTo(2);
    assertThat(stats.hitCount()).isEqualTo(0);

    cache.refresh(new Object());
    assertThat(Thread.interrupted()).isTrue();
    checkLoggedCause(e);

      }

      if (!expectedValues.containsKey(UNNECESSARY)) {
        assertWithMessage("Expected roundUnnecessaryShouldThrow call")
            .that(unnecessaryShouldThrow)
            .isTrue();
        assertThrows(
            "Expected ArithmeticException for roundToDouble(" + input + ", UNNECESSARY)",
            ArithmeticException.class,
            () -> BigDecimalMath.roundToDouble(input, UNNECESSARY));