Removed non-deterministic test, corrected typo

app/models/user.rb

@@ -47,12 +47,12 @@ class User < ActiveRecord::Base
                                 .distinct
                                 .pluck(:created_at)
     frequency = (last_datetimes.map(&:to_time).map(&:to_i).sum / (num_orders * 10))
-    bonus = self.rich_privilige / 1.936
+    bonus = self.rich_privilege / 1.936
     self.frecency = frequency * bonus
     self.save
   end
 
-  def rich_privilige
+  def rich_privilege
     Math.atan(self.balance / 10) + (Math::PI / 2)
   end
 

spec/models/user_spec.rb

@@ -144,21 +144,13 @@ describe User do
     end
 
     it 'should be recalculated on creating an order' do
-     
+
       expect(@user.frecency).to eq 0
       create :order, user: @user
       expect(@user.frecency).to_not eq 0
     end
 
-    it 'should be valid' do
-      dates = [Date.today.to_time, Date.yesterday.to_time]
-      dates.each do |date|
-        create :order, user: @user, created_at: date
-      end
-      @user.reload
-      num_orders = Rails.application.config.frecency_num_orders
-      # On Travis the result is 10025938 cause floating points
-      expect(@user.frecency).to be_within(50).of(10025915)
-    end
+    # TODO: add a test to check if the frecency is correct. Note that
+    #  frecency currently changes over time
   end
 end