improve tests for lva

app/models/lva.rb

@@ -98,7 +98,7 @@ class Lva < ActiveRecord::Base
     url
   end
 
-
+  # this should be more DRY
   def load_tissdata
     urlp="https://tiss.tuwien.ac.at/api/course/"+ lvanr.to_s.gsub(".","")+"-"
     begin
@@ -187,7 +187,8 @@ class Lva < ActiveRecord::Base
     end
     
   end
-
+  # Why is this an instance method??
+  # How is it used?
   def update_multiple(hash)
     newlvas=[]
     params["lvas"].each do |i,l|
@@ -222,7 +223,7 @@ class Lva < ActiveRecord::Base
       lecturers.map { |l| l.name }
     end
   end
-
+ # is this used? in which context?
   def self.update_multiple_with_modul(hash,modul)
     newlvas=[]
     hash.each do |i,l|
@@ -248,7 +249,7 @@ class Lva < ActiveRecord::Base
     
   end
 
-
+  # is this used? in which context?
   def read_et_forum
     lva=self
     url=lva.forumlink