adds not_archived scope to proposal

spec/factories.rb

@@ -164,7 +164,7 @@ FactoryGirl.define do
     end
 
     trait :archived do
-      created_at (Setting["months_to_archive_proposals"].to_i + 1).months.ago
+      created_at 25.months.ago
     end
 
     trait :with_hot_score do

spec/models/proposal_spec.rb

@@ -819,7 +819,7 @@ describe Proposal do
   end
 
   describe "archived" do
-    before(:all) do
+    before(:each) do
       @new_proposal = create(:proposal)
       @archived_proposal = create(:proposal, :archived)
     end
@@ -835,6 +835,13 @@ describe Proposal do
       expect(archived.size).to eq(1)
       expect(archived.first).to eq(@archived_proposal)
     end
+
+    it "scope archived" do
+      not_archived = Proposal.not_archived
+
+      expect(not_archived.size).to eq(1)
+      expect(not_archived.first).to eq(@new_proposal)
+    end
   end
 
 end