### Question:
JSSwitchUserProcessingFilter extends SwitchUserFilter { public ThemeResolver getThemeResolver() { return themeResolver; }  void setAuditContext(AuditContext auditContext); void afterPropertiesSet(); void doFilter(ServletRequest req, ServletResponse res, FilterChain chain); void setTargetUrl(String targetUrl); void setExitTargetUrl(String exitTargetUrl); ThemeResolver getThemeResolver(); void setThemeResolver(ThemeResolver themeResolver);  }### Answer:
@Test public void getAndSet_instanceWithDefaultValues() { JSSwitchUserProcessingFilter instance = new JSSwitchUserProcessingFilter(); assertNull(instance.getThemeResolver()); }