closer.close();
      }
    } catch (Throwable expected) {
      assertSame(tryException, expected);
    }

    assertTrue(c1.isClosed());
    assertTrue(c2.isClosed());

    assertSuppressed(
        new Suppression(c2, tryException, c2Exception),
        new Suppression(c1, tryException, c1Exception));
  }

  public void testCloseExceptionsSuppressed_whenExceptionThrownClosingFirstCloseable()

import mockwebserver3.SocketPolicy.ShutdownOutputAtEnd
import okhttp3.Headers.Companion.headersOf
import okhttp3.MediaType.Companion.toMediaType
import okhttp3.RequestBody.Companion.toRequestBody
import okhttp3.TestUtil.assertSuppressed
import okhttp3.internal.DoubleInetAddressDns
import okhttp3.internal.connection.RealConnection
import okhttp3.internal.connection.RealConnection.Companion.IDLE_CONNECTION_HEALTHY_NS

        closer.close();
      }
    } catch (Throwable expected) {
      assertSame(tryException, expected);
    }

    assertTrue(c1.isClosed());
    assertTrue(c2.isClosed());

    assertSuppressed(
        new Suppression(c2, tryException, c2Exception),
        new Suppression(c1, tryException, c1Exception));
  }

  public void testCloseExceptionsSuppressed_whenExceptionThrownClosingFirstCloseable()

   * so tests pass on GraalVM, where suppressed exceptions are silently discarded.
   *
   * https://github.com/oracle/graal/issues/3008
   */
  @JvmStatic
  fun Throwable.assertSuppressed(block: (List<@JvmSuppressWildcards Throwable>) -> Unit) {
    if (isGraalVmImage) return
    block(suppressed.toList())
  }

  @JvmStatic
  fun threadFactory(name: String): ThreadFactory {

import mockwebserver3.SocketPolicy.DisconnectAtEnd
import okhttp3.MediaType.Companion.toMediaType
import okhttp3.RequestBody.Companion.toRequestBody
import okhttp3.ResponseBody.Companion.toResponseBody
import okhttp3.TestUtil.assertSuppressed
import okio.Buffer
import okio.BufferedSink
import okio.ForwardingSink
import okio.ForwardingSource
import okio.GzipSink
import okio.Sink
import okio.Source
import okio.buffer

import okhttp3.HttpUrl.Companion.toHttpUrl
import okhttp3.HttpUrl.Companion.toHttpUrlOrNull
import okhttp3.MediaType.Companion.toMediaType
import okhttp3.RequestBody.Companion.toRequestBody
import okhttp3.TestUtil.assertSuppressed
import okhttp3.internal.RecordingAuthenticator
import okhttp3.internal.RecordingOkAuthenticator
import okhttp3.internal.USER_AGENT
import okhttp3.internal.addHeaderLenient