added a test for active_features

lib/feature_flipper/config.rb

@@ -38,6 +38,10 @@ def self.states=(states)
       @states = states
     end
 
+    def self.active_features
+      features.keys.select { |feature| is_active?(feature) }
+    end
+
     def self.get_state(feature_name)
       feature = features[feature_name]
       feature ? feature[:state] : nil
@@ -69,10 +73,6 @@ def self.is_active?(feature_name)
         state == true
       end
     end
-
-    def self.active_features
-      self.features.collect { |key, value| self.is_active?(key) ? key : nil }.compact
-    end
   end
 
   class Mapper

test/feature_flipper_test.rb

@@ -70,6 +70,18 @@
     assert_equal :dev, all_features[:dev_feature][:state]
     assert_equal 'dev feature', all_features[:dev_feature][:description]
   end
+
+  test 'should be able to get active features' do
+    Rails.stubs(:env).returns('production')
+    FeatureFlipper::Config.ensure_config_is_loaded
+    active_features = FeatureFlipper::Config.active_features
+
+    assert_equal 3, active_features.size
+    assert active_features.include?(:live_feature)
+    assert active_features.include?(:boolean_feature)
+    assert active_features.include?(:proc_feature)
+  end
+
 end
 
 context 'dynamic feature groups' do