test

lib/five-star.rb

@@ -1,5 +1,6 @@
 require "five-star/version"
 require "five-star/base_rater"
+require "five-star/configuration"
 require "five-star/rateable"
 require "five-star/errors"
 require "five-star/rating_calculator"

lib/five-star/configuration.rb

@@ -0,0 +1,6 @@
+module FiveStar
+  class Configuration
+    def min_rating; 0; end
+    def max_rating; 10; end
+  end
+end

lib/five-star/rateable.rb

@@ -62,7 +62,7 @@ def rating_klasses
     #
     # @api public
     def rating
-      rating_calculator.rate(raters)
+      rating_calculator.rate(config, raters)
     end
 
     # Return the rating description for each rater given to the `rateable`
@@ -117,5 +117,9 @@ def rating_klasses
     def rating_calculator
       RatingCalculator
     end
+
+    def config
+      Configuration.new
+    end
   end
 end

lib/five-star/rating_calculator.rb

@@ -3,11 +3,12 @@ module FiveStar
   #   Each instance must implement `rating` and `weighting`.
   # @api private
   class RatingCalculator
-    def self.rate(raters)
-      new(raters).calculate_rating
+    def self.rate(configuration, raters)
+      new(configuration, raters).calculate_rating
     end
 
-    def initialize(raters)
+    def initialize(configuration, raters)
+      @configuration = configuration
       @raters = raters
     end
 
@@ -24,7 +25,7 @@ def calculate_rating
 
     private
 
-    attr_reader :raters
+    attr_reader :raters, :configuration
 
     def sum_total
       raters.map { |rater|
@@ -38,7 +39,7 @@ def weights_total
 
     def validate_rating!(rating, rater)
       #rating = rating.to_i
-      if rating < 0 || rating > 10
+      if rating < min_rating || rating > max_rating
         raise RatingError, "Rating #{rating} is invalid from #{rater.class}"
       else
         rating
@@ -52,5 +53,13 @@ def validate_weighting!(weighting, rater)
         weighting
       end
     end
+
+    def min_rating
+      configuration.min_rating
+    end
+
+    def max_rating
+      configuration.max_rating
+    end
   end
 end

spec/five-star/rateable_spec.rb

@@ -1,6 +1,7 @@
 require "spec_helper"
 
 RSpec.describe FiveStar::Rateable do
+  # let(:configuration) { double("Configuration", min_rating: 0, max_rating: 10) }
   class Rater
     def self.build(_); self; end
     def self.description; end
@@ -25,7 +26,7 @@ def self.description; end
     end
 
     it "passes raters to calculation class" do
-      expect(FiveStar::RatingCalculator).to receive(:rate).with([Rater, Rater, Rater])
+      expect(FiveStar::RatingCalculator).to receive(:rate).with(anything, [Rater, Rater, Rater])
 
       dummy_class.new.rating
     end

spec/five-star/rating_calculator_spec.rb

@@ -2,7 +2,8 @@
 
 RSpec.describe FiveStar::RatingCalculator do
   let(:list_of_raters) { [first_rater, second_rater, third_rater] }
-  subject { described_class.new(list_of_raters) }
+  let(:configuration) { double("Configuration", min_rating: 0, max_rating: 10) }
+  subject { described_class.new(configuration, list_of_raters) }
 
   describe "#calculate_rating" do
     context "with no rating classes provided" do