update with changes from Production branch

spec/helpers/feed_helper_spec.rb

@@ -1,15 +1,106 @@
 require 'spec_helper'
 
-# Specs in this file have access to a helper object that includes
-# the FeedHelper. For example:
-#
-# describe FeedHelper do
-#   describe "string concat" do
-#     it "concats two strings with spaces" do
-#       helper.concat_strings("this","that").should == "this that"
-#     end
-#   end
-# end
 describe FeedHelper do
-  pending "add some examples to (or delete) #{__FILE__}"
+  describe "feed_select_data" do
+    before :each do
+      @channel = FactoryGirl.create(:channel)
+    end
+    it "extracts selection criteria from the request parameters with no time params" do
+      #params = {:average => 10}
+      helper.stub(:params).and_return(params)
+      only = Feed.select_options(@channel, params)
+      only.should include(:created_at, :entry_id)
+    end
+    it "extracts selection criteria from the request parameters " do
+      params = {:average => 10}
+      helper.stub(:params).and_return(params)
+      only = Feed.select_options(@channel, params)
+      only.should include(:created_at)
+    end
+  end
+  describe "feeds_into_averages" do
+    before :each do
+      userAttr = FactoryGirl.attributes_for(:user)
+      @user = User.create!(userAttr)
+
+      @channel = FactoryGirl.create(:channel, :user => @user)
+      now = Time.utc(2013,1,1)
+      feed1 = FactoryGirl.create(:feed, :channel => @channel, :created_at => now)
+      feed2 = FactoryGirl.create(:feed, :channel => @channel, :created_at => now - 5.minutes)
+      feed3 = FactoryGirl.create(:feed, :channel => @channel, :created_at => now - 8.minutes)
+    end
+
+    it "averages feed values based on a timeslice" do
+      feeds = Feed.find(:all, :order => :created_at)
+      params = {:average => 10}
+      helper.stub(:params).and_return(params)
+
+      timeslices = helper.feeds_into_averages(feeds, params)
+      timeslices.size.should eq(2)
+    end
+  end
+  describe "feeds_into_median" do
+    before :each do
+      userAttr = FactoryGirl.attributes_for(:user)
+      @user = User.create!(userAttr)
+
+      @channel = FactoryGirl.create(:channel, :user => @user)
+      now = Time.utc(2013,1,1)
+      feed1 = FactoryGirl.create(:feed, :channel => @channel, :created_at => now)
+      feed2 = FactoryGirl.create(:feed, :channel => @channel, :created_at => now - 5.minutes)
+      feed3 = FactoryGirl.create(:feed, :channel => @channel, :created_at => now - 8.minutes)
+    end
+
+    it "median feed values based on a timeslice" do
+      feeds = Feed.find(:all, :order => :created_at)
+      params = {:median => 10}
+      helper.stub(:params).and_return(params)
+
+      timeslices = helper.feeds_into_medians(feeds, params)
+      timeslices.size.should eq(2)
+    end
+  end
+  describe "feeds_into_sums" do
+    before :each do
+      userAttr = FactoryGirl.attributes_for(:user)
+      @user = User.create!(userAttr)
+
+      @channel = FactoryGirl.create(:channel, :user => @user)
+      now = Time.utc(2013,1,1)
+      feed1 = FactoryGirl.create(:feed, :channel => @channel, :created_at => now)
+      feed2 = FactoryGirl.create(:feed, :channel => @channel, :created_at => now - 5.minutes)
+      feed3 = FactoryGirl.create(:feed, :channel => @channel, :created_at => now - 8.minutes)
+    end
+
+    it "sum feed values based on a timeslice" do
+      feeds = Feed.find(:all, :order => :created_at)
+      params = {:sum => 10}
+      helper.stub(:params).and_return(params)
+
+      timeslices = helper.feeds_into_sums(feeds, params)
+      timeslices.size.should eq(2)
+    end
+  end
+  describe "feeds_into_timescales" do
+    before :each do
+      userAttr = FactoryGirl.attributes_for(:user)
+      @user = User.create!(userAttr)
+
+      @channel = FactoryGirl.create(:channel, :user => @user)
+      now = Time.utc(2013,1,1)
+      feed1 = FactoryGirl.create(:feed, :channel => @channel, :created_at => now)
+      feed2 = FactoryGirl.create(:feed, :channel => @channel, :created_at => now - 5.minutes)
+      feed3 = FactoryGirl.create(:feed, :channel => @channel, :created_at => now - 8.minutes)
+    end
+
+    it "timescale feed values based on a timeslice" do
+      feeds = Feed.find(:all, :order => :created_at)
+      params = {:timescale => 10}
+      helper.stub(:params).and_return(params)
+
+      timeslices = helper.feeds_into_timescales(feeds, params)
+      timeslices.size.should eq(2)
+    end
+  end
 end
+