### Question:
SpringELResolver extends ELResolver implements FacesWrapper<CompositeELResolver> { @Override public Class<?> getCommonPropertyType(ELContext context, Object base) { return getWrapped().getCommonPropertyType(context, base); }  CompositeELResolver getWrapped(); @Override Object getValue(ELContext context, Object base, Object property); @Override Class<?> getType(ELContext context, Object base, Object property); @Override void setValue(ELContext context, Object base, Object property, Object value); @Override boolean isReadOnly(ELContext context, Object base, Object property); @Override Iterator<FeatureDescriptor> getFeatureDescriptors(ELContext context, Object base); @Override Class<?> getCommonPropertyType(ELContext context, Object base);  }### Answer:
@Test public void shouldDelegateGetCommonPropertyType() throws Exception { this.el.getCommonPropertyType(this.context, this.base); this.el.verify().getCommonPropertyType(this.context, this.base); }