/**
   * Closing a connection handle should release that connection back in the pool and mark it as
   * closed.
   *
   * @throws SecurityException
   * @throws NoSuchFieldException
   * @throws IllegalArgumentException
   * @throws IllegalAccessException
   * @throws InvocationTargetException
   * @throws NoSuchMethodException
   * @throws SQLException
   */
  @Test
  public void testClose()
      throws SecurityException, NoSuchFieldException, IllegalArgumentException,
          IllegalAccessException, InvocationTargetException, NoSuchMethodException, SQLException {

    Field field = testClass.getClass().getDeclaredField("doubleCloseCheck");
    field.setAccessible(true);
    field.set(testClass, true);

    testClass.renewConnection();
    mockPool.releaseConnection((Connection) anyObject());
    expectLastCall().once().andThrow(new SQLException()).once();
    replay(mockPool);

    testClass.close();

    // logically mark the connection as closed
    field = testClass.getClass().getDeclaredField("logicallyClosed");

    field.setAccessible(true);
    Assert.assertTrue(field.getBoolean(testClass));
    assertTrue(testClass.isClosed());

    testClass.renewConnection();
    try {
      testClass.close(); // 2nd time should throw an exception
      fail("Should have thrown an exception");
    } catch (Throwable t) {
      // do nothing.
    }

    verify(mockPool);
  }
  /**
   * @throws SecurityException
   * @throws NoSuchFieldException
   * @throws IllegalArgumentException
   * @throws IllegalAccessException
   * @throws SQLException
   */
  @Test
  public void testDoubleClose()
      throws SecurityException, NoSuchFieldException, IllegalArgumentException,
          IllegalAccessException, SQLException {
    Field field = testClass.getClass().getDeclaredField("doubleCloseCheck");
    field.setAccessible(true);
    field.set(testClass, true);

    field = testClass.getClass().getDeclaredField("logicallyClosed");
    field.setAccessible(true);
    field.set(testClass, true);

    field = testClass.getClass().getDeclaredField("doubleCloseException");
    field.setAccessible(true);
    field.set(testClass, "fakeexception");
    mockLogger.error((String) anyObject(), anyObject());
    expectLastCall().once();

    mockPool.releaseConnection((Connection) anyObject());
    expectLastCall().once().andThrow(new SQLException()).once();
    replay(mockLogger, mockPool);

    testClass.close();
  }