ByteSource source = out.asByteSource();

    out.write(data);
    assertThat(source.read()).isEqualTo(data);

    out.close();
    assertThrows(IOException.class, () -> out.write(42));

    // Verify that write had no effect
    assertThat(source.read()).isEqualTo(data);
    out.reset();
  }

  public void testReset() throws Exception {
    byte[] data = newPreFilledByteArray(100);

    executionThread.join();
    assertThat(expected).hasCauseThat().isEqualTo(service.failureCause());
    assertThat(expected).hasCauseThat().hasMessageThat().isEqualTo("kaboom!");
    assertTrue(service.shutDownCalled);
    assertEquals(Service.State.FAILED, service.state());
    assertThat(expected.getCause().getSuppressed()[0]).hasMessageThat().isEqualTo("double kaboom!");
  }

@NullUnmarked
public class PairedStatsTest extends TestCase {

  public void testCount() {
    assertThat(EMPTY_PAIRED_STATS.count()).isEqualTo(0);
    assertThat(ONE_VALUE_PAIRED_STATS.count()).isEqualTo(1);
    assertThat(TWO_VALUES_PAIRED_STATS.count()).isEqualTo(2);
    assertThat(MANY_VALUES_PAIRED_STATS.count()).isEqualTo(MANY_VALUES_COUNT);
  }

  public void testXStats() {

@NullUnmarked
public class PairedStatsTest extends TestCase {

  public void testCount() {
    assertThat(EMPTY_PAIRED_STATS.count()).isEqualTo(0);
    assertThat(ONE_VALUE_PAIRED_STATS.count()).isEqualTo(1);
    assertThat(TWO_VALUES_PAIRED_STATS.count()).isEqualTo(2);
    assertThat(MANY_VALUES_PAIRED_STATS.count()).isEqualTo(MANY_VALUES_COUNT);
  }

  public void testXStats() {

        assertThrows(
            ConflictingRequirementsException.class, () -> buildTesterRequirements(Tester.class));
    assertThat(e.getConflicts()).containsExactly(FOO);
    assertThat(e.getSource()).isEqualTo(Tester.class.getAnnotation(Require.class));
  }

  public void testBuildTesterRequirements_classClassConflict_inherited() {
    @Require(FOO)
    abstract class BaseTester {}
    @Require(absent = FOO)

 * limitations under the License.
 */
package okhttp.android.test.alpn

import android.os.Build
import android.util.Log
import assertk.assertThat
import assertk.assertions.isEqualTo
import javax.net.ssl.SSLSocket
import javax.net.ssl.SSLSocketFactory
import okhttp3.Call
import okhttp3.Connection
import okhttp3.ConnectionSpec
import okhttp3.DelegatingSSLSocketFactory
import okhttp3.EventListener

    byte[] b5 = "スューー".getBytes(Charsets.US_ASCII);
    // Assert they are all equal (using the transitive property)
    assertThat(b1).isEqualTo(b2);
    assertThat(b2).isEqualTo(b3);
    assertThat(b3).isEqualTo(b4);
    assertThat(b4).isEqualTo(b5);
  }

    ListenableFuture<String> f =
        new SimpleForwardingListenableFuture<String>(immediateFuture("a")) {};
    verify(!(f instanceof FluentFuture));
    assertThat(FluentFuture.from(f).get()).isEqualTo("a");
    // TODO(cpovirk): Test forwarding more extensively.
  }

  public void testAddCallback() {
    FluentFuture<String> f = FluentFuture.from(immediateFuture("a"));
    boolean[] called = new boolean[1];

    assumeNetwork()

    val request = Request.Builder().url("https://mozilla.org/robots.txt").build()

    client.newCall(request).execute().use {
      assertThat(it.protocol).isEqualTo(Protocol.HTTP_2)
      assertThat(it.handshake!!.tlsVersion).isEqualTo(TlsVersion.TLS_1_3)
    }
  }

    ImmutableNetwork<String, Integer> immutableNetwork = ImmutableNetwork.copyOf(mutableNetwork);

    assertThat(immutableNetwork).isNotInstanceOf(MutableNetwork.class);
    assertThat(immutableNetwork).isEqualTo(mutableNetwork);

    mutableNetwork.addNode("B");
    assertThat(immutableNetwork).isNotEqualTo(mutableNetwork);
  }

  @Test
  public void copyOfImmutableNetwork_optimized() {