Some tests for the undocumented Roodi configuration file feature

lib/base/configuration.rb

@@ -115,7 +115,8 @@ def reset
       @flog     = { :dirs_to_flog => @code_dirs  }
       @reek     = { :dirs_to_reek => @code_dirs,
                     :config_file_pattern => nil}
-      @roodi    = { :dirs_to_roodi => @code_dirs }
+      @roodi    = { :dirs_to_roodi => @code_dirs,
+                    :roodi_config => nil}
       @saikuro  = { :output_directory => @scratch_directory + '/saikuro', 
                     :input_directory => @code_dirs,
                     :cyclo => "",

lib/generators/roodi.rb

@@ -6,7 +6,6 @@ def self.verify_dependencies!
       raise 'sudo gem install roodi # if you want the roodi tasks' unless $?.success?
     end
 
-
     def emit
       files_to_analyze = MetricFu.roodi[:dirs_to_roodi].map{|dir| Dir[File.join(dir, "**/*.rb")] }
       files = remove_excluded_files(files_to_analyze.flatten)

spec/base/configuration_spec.rb

@@ -102,7 +102,7 @@ def metric_fu_root
 
     it 'should set @roodi to {:dirs_to_roodi => @code_dirs}' do
       @config.instance_variable_get(:@roodi).
-              should == {:dirs_to_roodi => ['lib']}
+              should == {:roodi_config=>nil, :dirs_to_roodi => ['lib']}
     end
 
     it 'should set @churn to {}' do

spec/generators/roodi_spec.rb

@@ -0,0 +1,26 @@
+require File.expand_path(File.dirname(__FILE__) + "/../spec_helper")
+
+describe Roodi do 
+  describe "emit" do
+    it "should add config options when present" do
+      MetricFu::Roodi.stub!(:verify_dependencies!).and_return(true)
+      MetricFu::Configuration.run do |config|
+        config.roodi = {:roodi_config => 'lib/config/roodi_config.yml', :dirs_to_roodi => []}
+      end
+      roodi = MetricFu::Roodi.new
+      roodi.should_receive(:`).with(/-config=lib\/config\/roodi_config\.yml/).and_return("")
+      roodi.emit
+    end
+
+    it "should NOT add config options when NOT present" do
+      MetricFu::Roodi.stub!(:verify_dependencies!).and_return(true)
+      MetricFu::Configuration.run do |config|
+        config.roodi = {:dirs_to_roodi => []}
+      end
+      roodi = MetricFu::Roodi.new
+      roodi.stub(:`)
+      roodi.should_receive(:`).with(/-config/).never
+      roodi.emit
+    end
+  end
+end