Disable the 'prune' filter spec because the test should have always failed, but it didn't, and I'm not sure what to do next...

spec/filters/prune.rb

@@ -1,7 +1,12 @@
 require "test_utils"
 require "logstash/filters/prune"
 
-describe LogStash::Filters::Prune do
+# Currently the prune filter has bugs and I can't really tell what the intended
+# behavior is.
+#
+# See the 'whitelist field values with interpolation' test for a commented
+# explanation of my confusion.
+describe LogStash::Filters::Prune, :if => false  do
   extend LogStash::RSpec
 
   describe "defaults" do
@@ -174,6 +179,8 @@ describe LogStash::Filters::Prune do
     config <<-CONFIG
       filter {
         prune {
+          # This should only  permit fields named 'firstname', 'fullname',
+          # 'location', 'status', etc.
           whitelist_values => [ "firstname", "^Borat$",
                                 "fullname", "%{firstname} Sagdiyev",
                                 "location", "no no no",
@@ -195,6 +202,10 @@ describe LogStash::Filters::Prune do
       "%{hmm}"       => "doh"
     ) do
       insist { subject["firstname"] } == "Borat"
+
+      # TODO(sissel): According to the config above, this should be nil because
+      # it is not in the list of whitelisted fields, but we expect it to be
+      # "Sagdiyev" ? I am confused.
       insist { subject["lastname"] } == "Sagdiyev"
       insist { subject["fullname"] } == nil
       insist { subject["country"] } == "Kazakhstan"
@@ -202,6 +213,12 @@ describe LogStash::Filters::Prune do
       insist { subject["hobby"] } == "Cloud"
       insist { subject["status"] } == "200"
       insist { subject["Borat_saying"] } == "Cloud is not ready for enterprise if is not integrate with single server running Active Directory."
+
+      # TODO(sissel): Contrary to the 'lastname' check, we expect %{hmm} field
+      # to be nil because it is not whitelisted, yes? Contradictory insists 
+      # here. I don't know what the intended behavior is... Seems like
+      # whitelist means 'anything not here' but since this test is written
+      # confusingly, I dont' know how to move forward.
       insist { subject["%{hmm}"] } == nil
     end
   end