### Question:
ServletContextAttributeHelper { public void clear() { LOG.debug("destroying servletContext: {}", this.name); for (Attribute attribute : Attribute.values()) { servletContext.removeAttribute(getAttributeName(attribute)); } } ServletContextAttributeHelper(final ServletContext servletContext);  ServletContextAttributeHelper(final ServletContext servletContext, final String name); static ServletContextAttributeHelper create(final FilterConfig filterConfig); WroManagerFactory getManagerFactory(); WroConfiguration getWroConfiguration(); void setWroConfiguration(final WroConfiguration config); void setManagerFactory(final WroManagerFactory managerFactory); void clear(); static final String DEFAULT_NAME; }### Answer:
@Test public void shouldClearAllAttributes() { victim.clear(); }