/**
   * Tests VisibilityPropertyPanel#refreshPanel() for accuracy.
   *
   * <p>It verifies VisibilityPropertyPanel#refreshPanel() is correct.
   */
  public void testRefreshPanel_NoVisible() {
    panel.refreshPanel();

    assertFalse(
        "Failed to refresh panel correctly.",
        ((JRadioButton) panel.retrievePanel().getComponent(0)).isSelected());
    assertFalse(
        "Failed to refresh panel correctly.",
        ((JRadioButton) panel.retrievePanel().getComponent(1)).isSelected());
    assertFalse(
        "Failed to refresh panel correctly.",
        ((JRadioButton) panel.retrievePanel().getComponent(2)).isSelected());
    assertFalse(
        "Failed to refresh panel correctly.",
        ((JRadioButton) panel.retrievePanel().getComponent(3)).isSelected());
  }