return suite;
  }

  public void testAllocArraysDefault() {
    CompactHashSet<Integer> set = CompactHashSet.create();
    assertThat(set.needsAllocArrays()).isTrue();
    assertThat(set.elements).isNull();

    set.add(1);
    assertThat(set.needsAllocArrays()).isFalse();
    assertThat(set.elements).hasLength(CompactHashing.DEFAULT_SIZE);
  }

  public void testAllocArraysExpectedSize() {

    assertThat(future.isDone()).isFalse();
    assertThat(future.tryInternalFastPathGetFailure()).isNull();
  }

  public void testTrustedGetFailure_canceledNoCause() {
    SettableFuture<String> future = SettableFuture.create();
    future.cancel(false);
    assertThat(future.tryInternalFastPathGetFailure()).isNull();
  }

  public void testGetFailure_completed() {

 * limitations under the License.
 */
package okhttp3.internal.tls

import assertk.assertThat
import assertk.assertions.endsWith
import assertk.assertions.isEqualTo
import assertk.assertions.isNull
import assertk.assertions.startsWith
import java.io.IOException
import java.net.SocketException
import java.security.GeneralSecurityException
import java.security.SecureRandom
import java.security.cert.X509Certificate

 * limitations under the License.
 */
package okhttp3

import assertk.assertThat
import assertk.assertions.containsExactly
import assertk.assertions.isEqualTo
import assertk.assertions.isNull
import okhttp3.internal.http.parseChallenges
import org.junit.jupiter.api.Disabled
import org.junit.jupiter.api.Test

class HeadersChallengesTest {
  /** See https://github.com/square/okhttp/issues/2780.  */

 * limitations under the License.
 */
package okhttp3.internal.cache2

import assertk.assertThat
import assertk.assertions.isEqualTo
import assertk.assertions.isFalse
import assertk.assertions.isNull
import assertk.assertions.isTrue
import java.io.File
import java.io.IOException
import java.util.concurrent.Callable
import java.util.concurrent.Executors
import kotlin.test.assertFailsWith

    val page2 = server.takeRequest()
    assertThat(page2.requestLine).isEqualTo("GET /page2 HTTP/1.1")
    assertThat(page2.headers["Content-Length"]).isNull()
    assertThat(page2.headers["Content-Type"]).isNull()
    assertThat(page2.headers["Transfer-Encoding"]).isNull()
  }

  @Test
  fun response305UseProxy() {
    server.enqueue(
      MockResponse(
        code = HttpURLConnection.HTTP_USE_PROXY,

    assertThat(request.header("User-Agent")).isNull()
    assertThat(request.header("Host")).isNull()
    assertThat(request.header("Accept-Encoding")).isNull()

    // No extra headers in the application's response.
    val response = client.newCall(request).execute()
    assertThat(request.header("Content-Encoding")).isNull()
    assertThat(response.body.string()).isEqualTo("abcabcabc")
  }

import assertk.assertions.containsExactly
import assertk.assertions.isEqualTo
import assertk.assertions.isInstanceOf
import assertk.assertions.isNotInstanceOf
import assertk.assertions.isNotNull
import assertk.assertions.isNull
import assertk.assertions.isSameAs
import java.io.IOException
import java.net.CookieManager
import java.net.Proxy
import java.net.ProxySelector
import java.net.ResponseCache
import java.net.SocketAddress

    assertThat(Stream.of(1).collect(onlyElement())).isEqualTo(1);
  }

  public void testOnlyElementNull() {
    assertThat(Stream.<@Nullable Object>of((Object) null).collect(onlyElement())).isNull();
  }

  public void testOnlyElementMultiple() {
    IllegalArgumentException expected =
        assertThrows(IllegalArgumentException.class, () -> Stream.of(1, 2).collect(onlyElement()));

  }

  public void testStringConverter_nullConversions() {
    assertThat(Doubles.stringConverter().convert(null)).isNull();
    assertThat(Doubles.stringConverter().reverse().convert(null)).isNull();
  }

  @GwtIncompatible // Double.toString returns different value in GWT.
  public void testStringConverter_reverse() {