Future<?> possiblyIgnoredError1 = serializer.submitAsync(secondCallable, directExecutor());
    assertThat(firstCallable.called).isTrue();
    assertThat(secondCallable.called).isFalse();
    firstFuture.set(null);
    assertThat(secondCallable.called).isTrue();
  }

  public void testCancellationDoesNotViolateSerialization() {
    @SuppressWarnings({"unused", "nullness"})

    // Confirm the iterator returns those responses...
    val i: Iterator<String> = cache.urls()
    assertThat(i.hasNext()).isTrue()
    assertThat(i.next()).isEqualTo(urlA.toString())
    assertThat(i.hasNext()).isTrue()
    assertThat(i.next()).isEqualTo(urlB.toString())
    assertThat(i.hasNext()).isTrue()
    assertThat(i.next()).isEqualTo(urlC.toString())

    // ... and nothing else.

              // We can't have a GOLDEN_NOT_PRESENT_KEY because false positives are
              // possible! It's false negatives that can't happen.
              assertThat(bloomFilter.mightContain(GOLDEN_PRESENT_KEY)).isTrue();

              int key = getNonGoldenRandomKey();
              // We can't check that the key is mightContain() == false before the
              // put() because the key could have already been generated *or* the

        .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() {

import assertk.assertions.hasMessage
import assertk.assertions.isEmpty
import assertk.assertions.isEqualTo
import assertk.assertions.isNull
import assertk.assertions.isSameAs
import assertk.assertions.isTrue
import java.io.File
import java.io.FileWriter
import java.net.URI
import java.util.UUID
import kotlin.test.assertFailsWith
import okhttp3.Headers.Companion.headersOf
import okhttp3.HttpUrl.Companion.toHttpUrl

              // We can't have a GOLDEN_NOT_PRESENT_KEY because false positives are
              // possible! It's false negatives that can't happen.
              assertThat(bloomFilter.mightContain(GOLDEN_PRESENT_KEY)).isTrue();

              int key = getNonGoldenRandomKey();
              // We can't check that the key is mightContain() == false before the
              // put() because the key could have already been generated *or* the

        .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() {