lib/verdict/experiment.rb in verdict-0.6.3 vs lib/verdict/experiment.rb in verdict-0.7.0

@@ -1,10 +1,10 @@
 class Verdict::Experiment
 
   include Verdict::Metadata
 
-  attr_reader :handle, :qualifier, :storage, :event_logger
+  attr_reader :handle, :qualifiers, :storage, :event_logger
 
   def self.define(handle, *args, &block)
     experiment = self.new(handle, *args, &block)
     raise Verdict::ExperimentHandleNotUnique.new(experiment.handle) if Verdict.repository.has_key?(experiment.handle)
     Verdict.repository[experiment.handle] = experiment
@@ -12,11 +12,11 @@
 
   def initialize(handle, options = {}, &block)
     @handle = handle.to_s
 
     options = default_options.merge(options)
-    @qualifier                    = options[:qualifier]
+    @qualifiers                   = Array(options[:qualifier] || options[:qualifiers])
     @event_logger                 = options[:event_logger] || Verdict::EventLogger.new(Verdict.default_logger)
     @storage                      = storage(options[:storage] || :memory)
     @store_unqualified            = options[:store_unqualified]
     @segmenter                    = options[:segmenter]
     @subject_type                 = options[:subject_type]
@@ -56,12 +56,20 @@
     groups(Verdict::Segmenters::RolloutSegmenter) do
       group rollout_group_name, percentage
     end
   end
 
-  def qualify(&block)
-    @qualifier = block
+  def qualify(method_name = nil, &block)
+    if block_given?
+      @qualifiers << block
+    elsif method_name.nil?
+      raise ArgumentError, "no method nor blocked passed!"
+    elsif respond_to?(method_name, true)
+      @qualifiers << method(method_name).to_proc
+    else
+      raise ArgumentError, "No helper for #{method_name.inspect}"
+    end
   end
 
   def storage(storage = nil, options = {})
     return @storage if storage.nil?
 
@@ -167,11 +175,11 @@
     raise Verdict::EmptySubjectIdentifier, "Subject resolved to an empty identifier!" if identifier.empty?
     identifier
   end
 
   def has_qualifier?
-    !@qualifier.nil?
+    @qualifiers.any?
   end
 
   def everybody_qualifies?
     !has_qualifier?
   end
@@ -202,10 +210,10 @@
     @disqualify_empty_identifier
   end
 
   def subject_qualifies?(subject, context = nil)
     ensure_experiment_has_started
-    everybody_qualifies? || @qualifier.call(subject, context)
+    everybody_qualifies? || @qualifiers.all? { |qualifier| qualifier.call(subject, context) }
   end
 
   protected
 
   def default_options