} finally {
        assertThat(thrownException.getSuppressed()).isEmpty();
        closer.close();
      }
    } catch (IOException expected) {
      assertSame(thrownException, expected);
    }

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

    ImmutableSet<Throwable> suppressed = ImmutableSet.copyOf(thrownException.getSuppressed());
    assertEquals(2, suppressed.size());

      } finally {
        assertThat(thrownException.getSuppressed()).isEmpty();
        closer.close();
      }
    } catch (IOException expected) {
      assertSame(thrownException, expected);
    }

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

    ImmutableSet<Throwable> suppressed = ImmutableSet.copyOf(thrownException.getSuppressed());
    assertEquals(2, suppressed.size());

   */
  private static int runSuppressionFailureTest(ByteSource in, ByteSink out) {
    try {
      in.copyTo(out);
      fail();
    } catch (IOException expected) {
      return expected.getSuppressed().length;
    }
    throw new AssertionError(); // can't happen
  }

  private static ByteSource newNormalByteSource() {
    return ByteSource.wrap(new byte[10]);
  }

   */
  private static int runSuppressionFailureTest(CharSource in, CharSink out) {
    try {
      in.copyTo(out);
      fail();
    } catch (IOException expected) {
      return expected.getSuppressed().length;
    }
    throw new AssertionError(); // can't happen
  }

  private static CharSource newNormalCharSource() {
    return CharSource.wrap("ABC");
  }

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

  private class ThrowOnRunService extends AbstractExecutionThreadService {
    private boolean shutDownCalled = false;

   */
  private static int runSuppressionFailureTest(CharSource in, CharSink out) {
    try {
      in.copyTo(out);
      fail();
    } catch (IOException expected) {
      return expected.getSuppressed().length;
    }
    throw new AssertionError(); // can't happen
  }

  private static CharSource newNormalCharSource() {
    return CharSource.wrap("ABC");
  }

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

  private class ThrowOnRunService extends AbstractExecutionThreadService {
    private boolean shutDownCalled = false;

   */
  private static int runSuppressionFailureTest(ByteSource in, ByteSink out) {
    try {
      in.copyTo(out);
      fail();
    } catch (IOException expected) {
      return expected.getSuppressed().length;
    }
    throw new AssertionError(); // can't happen
  }

  private static ByteSource newNormalByteSource() {
    return ByteSource.wrap(new byte[10]);
  }

   * directory, this method skips that file and continues. All such exceptions are collected and,
   * after attempting to delete all files, an {@code IOException} is thrown containing those
   * exceptions as {@linkplain Throwable#getSuppressed() suppressed exceptions}.
   *
   * <h2>Warning: Security of recursive deletes</h2>
   *
   * <p>On a file system that supports symbolic links and does <i>not</i> support {@link

   * directory, this method skips that file and continues. All such exceptions are collected and,
   * after attempting to delete all files, an {@code IOException} is thrown containing those
   * exceptions as {@linkplain Throwable#getSuppressed() suppressed exceptions}.
   *
   * <h2>Warning: Security of recursive deletes</h2>
   *
   * <p>On a file system that supports symbolic links and does <i>not</i> support {@link