add list_items rspec

Signed-off-by: Sebastien Varrette <sebastien.varrette@uni.lu>
improve coverage (again)

Signed-off-by: Sebastien Varrette <sebastien.varrette@uni.lu>
correct sorting on rspec parse

Signed-off-by: Sebastien Varrette <sebastien.varrette@uni.lu>