add tests for ListController.best_period_for

spec/controllers/list_controller_spec.rb

@@ -215,4 +215,31 @@ describe ListController do
     end
   end
 
+  describe "best_period_for" do
+
+    it "returns yearly for more than 180 days" do
+      ListController.best_period_for(nil).should == :yearly
+      ListController.best_period_for(180.days.ago).should == :yearly
+    end
+
+    it "returns monthly when less than 180 days and more than 35 days" do
+      (35...180).each do |date|
+        ListController.best_period_for(date.days.ago).should == :monthly
+      end
+    end
+
+    it "returns weekly when less than 35 days and more than 8 days" do
+      (8...35).each do |date|
+        ListController.best_period_for(date.days.ago).should == :weekly
+      end
+    end
+
+    it "returns daily when less than 8 days" do
+      (0...8).each do |date|
+        ListController.best_period_for(date.days.ago).should == :daily
+      end
+    end
+
+  end
+
 end