private final RuntimeException ex;

    private ThrowingIterator(RuntimeException ex) {
      this.ex = ex;
    }

    @Override
    public boolean hasNext() {
      // IteratorTester doesn't expect exceptions for hasNext().
      return true;
    }

    @Override
    public E next() {
      ex.fillInStackTrace();
      throw ex;
    }

    @Override

    ListeningScheduledExecutorService service = listeningDecorator(delegate);
    RuntimeException ex = new RuntimeException();
    ListenableFuture<?> future = service.schedule(new ThrowingRunnable(0, ex), 1, MILLISECONDS);
    assertExecutionException(future, ex);
    assertEquals(0, delegate.getQueue().size());
  }

  public void testListeningDecorator_schedulePeriodic() throws Exception {

        assertArgumentNotNull("field", field);

        try {
            return (T) field.get(target);
        } catch (final IllegalAccessException ex) {
            throw new IllegalAccessRuntimeException(field.getDeclaringClass(), ex);
        }
    }

    /**
     * Returns the value of a {@literal static} {@link Field} as an int.
     *
     * @param field the field (must not be {@literal null})

    RuntimeException re = new RuntimeException(iae);
    IllegalStateException ex = new IllegalStateException(re);

    assertThat(getCausalChain(ex)).containsExactly(ex, re, iae, sue).inOrder();
    assertSame(sue, Iterables.getOnlyElement(getCausalChain(sue)));

    List<Throwable> causes = getCausalChain(ex);
    assertThrows(UnsupportedOperationException.class, () -> causes.add(new RuntimeException()));
  }

        } catch (final InvocationTargetException ex) {
            final Throwable t = ex.getCause();
            if (t instanceof RuntimeException) {
                throw (RuntimeException) t;
            }
            if (t instanceof Error) {
                throw (Error) t;
            }
            throw new InvocationTargetRuntimeException(method.getDeclaringClass(), ex);
        } catch (final IllegalAccessException ex) {

    RuntimeException re = new RuntimeException(iae);
    IllegalStateException ex = new IllegalStateException(re);

    assertThat(getCausalChain(ex)).containsExactly(ex, re, iae, sue).inOrder();
    assertSame(sue, Iterables.getOnlyElement(getCausalChain(sue)));

    List<Throwable> causes = getCausalChain(ex);
    assertThrows(UnsupportedOperationException.class, () -> causes.add(new RuntimeException()));
  }

    try {
      Chars.checkedCast(value);
      fail("Cast to char should have failed: " + value);
    } catch (IllegalArgumentException ex) {
      assertWithMessage(value + " not found in exception text: " + ex.getMessage())
          .that(ex.getMessage().contains(String.valueOf(value)))
          .isTrue();
    }
  }

  // We need to test that our method behaves like the JDK method.

        .isEqualTo("Suppliers.memoize(<supplier that returned 10>)");

    // Should get an exception when we try to serialize.
    RuntimeException ex = assertThrows(RuntimeException.class, () -> reserialize(memoizedSupplier));
    assertThat(ex).hasCauseThat().isInstanceOf(NotSerializableException.class);
  }

  @J2ktIncompatible
  @GwtIncompatible // SerializableTester

    try {
      Ints.checkedCast(value);
      fail("Cast to int should have failed: " + value);
    } catch (IllegalArgumentException ex) {
      assertWithMessage(value + " not found in exception text: " + ex.getMessage())
          .that(ex.getMessage().contains(String.valueOf(value)))
          .isTrue();
    }
  }

  // We need to test that our method behaves like the JDK method.

            buf.append(e.getKey()).append(": ");
            try {
                buf.append(e.getValue().get());
            } catch (final Exception ex) {
                logger.warn("Failed to process {} task.", e.getKey(), ex);
                buf.append(ex.getMessage());
            }
            buf.append('\n');
        });
        return buf.toString();
    }

    /**