}

  @Test
  public void addNode_newNode() {
    assume().that(graphIsMutable()).isTrue();

    assertThat(graphAsMutableGraph.addNode(N1)).isTrue();
    assertThat(graph.nodes()).contains(N1);
  }

  @Test
  public void addNode_existingNode() {
    assume().that(graphIsMutable()).isTrue();

    addNode(N1);
    ImmutableSet<Integer> nodes = ImmutableSet.copyOf(graph.nodes());

    assertThat(pool.connectionCount()).isEqualTo(0)
    assertThat(c1.socket().isClosed).isTrue()

    // Running again, the pool reports that no further runs are necessary.
    assertThat(pool.closeConnections(150L)).isEqualTo(-1)
    assertThat(pool.connectionCount()).isEqualTo(0)
    assertThat(c1.socket().isClosed).isTrue()
  }

  @Test fun inUseConnectionsNotEvicted() {
    val pool = factory.newConnectionPool()

    assertThat(cookie!!.matches("http://☃.net/".toHttpUrl())).isTrue()
    assertThat(cookie.matches("http://xn--n3h.net/".toHttpUrl())).isTrue()
    assertThat(cookie.matches("http://www.☃.net/".toHttpUrl())).isTrue()
    assertThat(cookie.matches("http://www.xn--n3h.net/".toHttpUrl())).isTrue()
  }

  @Test fun punycodeDomainMatches() {

    assertThat(segment.containsKey(key, hash)).isTrue();
    assertThat(segment.containsValue(value)).isTrue();
    assertThat(segment.containsValue(dummyValue)).isTrue();

    // expired
    dummy.setAccessTime(ticker.read() - 2);
    assertThat(segment.get(key, hash)).isNull();
    assertThat(segment.containsKey(key, hash)).isFalse();
    assertThat(segment.containsValue(value)).isTrue();

    assertThat(segment.containsKey(key, hash)).isTrue();
    assertThat(segment.containsValue(value)).isTrue();
    assertThat(segment.containsValue(dummyValue)).isTrue();

    // expired
    dummy.setAccessTime(ticker.read() - 2);
    assertThat(segment.get(key, hash)).isNull();
    assertThat(segment.containsKey(key, hash)).isFalse();
    assertThat(segment.containsValue(value)).isTrue();

    assertThat(map.containsKey(one)).isTrue();
    assertThat(map.containsValue(one)).isTrue();
    Object two = new Object();
    assertThat(map.replace(one, two)).isSameInstanceAs(one);
    assertThat(map.containsKey(one)).isTrue();
    assertThat(map.containsValue(one)).isFalse();
    Object three = new Object();
    assertThat(map.replace(one, two, three)).isTrue();
    assertThat(map.remove(one, three)).isTrue();

      for (int i = WARMUP_MIN; i < WARMUP_MAX; i++) {
        Entry<Object, Object> entry = warmed.get(i - WARMUP_MIN);
        assertThat(cache.asMap().containsKey(entry.getKey())).isTrue();
        assertThat(cache.asMap().containsValue(entry.getValue())).isTrue();
        // this getUnchecked() call shouldn't be a cache miss; verified below
        assertThat(cache.getUnchecked(entry.getKey())).isEqualTo(entry.getValue());
      }

    assume().that(graphIsMutable()).isTrue();
    assume().that(network.allowsParallelEdges()).isTrue();

    assertThat(networkAsMutableNetwork.addEdge(N1, N2, E12)).isTrue();
    assertThat(networkAsMutableNetwork.addEdge(N2, N1, E21)).isTrue();
    assertThat(networkAsMutableNetwork.addEdge(N1, N2, E12_A)).isTrue();
    assertThat(network.edgesConnecting(N1, N2)).containsExactly(E12, E12_A, E21);

import assertk.assertions.isFalse
import assertk.assertions.isTrue
import okio.Buffer
import okio.Source
import okio.Timeout
import okio.buffer
import org.junit.jupiter.api.Test

class IsProbablyUtf8Test {
  @Test fun isProbablyUtf8() {
    assertThat(Buffer().isProbablyUtf8(16L)).isTrue()
    assertThat(Buffer().writeUtf8("abc").isProbablyUtf8(16L)).isTrue()

      Key key = new Key(1);
      String value = key.toString();
      assertThat(cache.getUnchecked(key)).isSameInstanceAs(value);
      assertThat(cache.asMap().containsKey(key)).isTrue();
      assertThat(cache.asMap().containsValue(value)).isTrue();
      assertThat(cache.size()).isEqualTo(1);
    }
  }

  public void testClear() {
    for (LoadingCache<Key, String> cache : caches()) {
      Key key = new Key(1);