Introduce Mutant::Config objects

This will ease deve

Changelog.md

@@ -1,5 +1,9 @@
 # v0.2.17 2013-01-20
 
+* [change][dm2] Kill mutations in #initialize from class methods.
+
+# v0.2.17 2013-01-20
+
 * [change] Update dependencies
 
 # v0.2.16 2013-01-20

Gemfile

@@ -4,5 +4,5 @@ gemspec
 
 gem 'composition', :git => 'https://github.com/mbj/composition.git'
 
-gem 'devtools', :git => 'https://github.com/datamapper/devtools.git'
+gem 'devtools', :path => '../devtools' #:git => 'https://github.com/datamapper/devtools.git'
 eval(File.read(File.join(File.dirname(__FILE__),'Gemfile.devtools')))

lib/mutant.rb

@@ -14,6 +14,7 @@ require 'composition'
 require 'diff/lcs'
 require 'diff/lcs/hunk'
 require 'rspec'
+require 'anima'
 
 # Patch ice none to freeze nodes correctly
 class IceNine::Freezer
@@ -83,6 +84,7 @@ require 'mutant/mutator/node/return'
 require 'mutant/mutator/node/iter_19'
 require 'mutant/mutator/node/if'
 require 'mutant/mutator/node/receiver_case'
+require 'mutant/config' 
 require 'mutant/loader' 
 require 'mutant/context'
 require 'mutant/context/scope'

lib/mutant/cli.rb

@@ -14,7 +14,7 @@ module Mutant
     # @api private
     #
     def self.run(*arguments)
-      config = new(*arguments)
+      config = new(*arguments).config
       runner = Runner::Config.run(config)
       runner.success? ? EXIT_SUCCESS : EXIT_FAILURE
     rescue Error => exception
@@ -46,6 +46,25 @@ module Mutant
       matcher
     end
 
+    # Return config
+    #
+    # @return [Config]
+    #
+    # @api private
+    #
+    def config
+      Config.new(
+        :debug    => debug?,
+        :matcher  => matcher,
+        :filter   => filter,
+        :strategy => strategy,
+        :reporter => reporter
+      )
+    end
+    memoize :config
+
+  private
+
     # Test for running in debug mode
     #
     # @return [true]
@@ -98,8 +117,6 @@ module Mutant
     end
     memoize :reporter
 
-  private
-
     # Return matcher
     #
     # @return [Mutant::Matcher]

lib/mutant/config.rb

@@ -0,0 +1,8 @@
+module Mutant
+  # The configuration of a mutator run
+  class Config
+    include Adamantium::Flat, Anima.new(
+      :debug, :strategy, :matcher, :filter, :reporter
+    )
+  end
+end

lib/mutant/runner/config.rb

@@ -1,5 +1,6 @@
 module Mutant
   class Runner
+    # Runner for config
     class Config < self
 
       # Return subject runners

mutant.gemspec

@@ -25,4 +25,5 @@ Gem::Specification.new do |gem|
   gem.add_runtime_dependency('abstract_type',       '~> 0.0.4')
   gem.add_runtime_dependency('rspec-core',          '~> 2.13.0')
   gem.add_runtime_dependency('diff-lcs',            '~> 1.2.1')
+  gem.add_runtime_dependency('anima',               '~> 0.0.5')
 end

spec/unit/mutant/cli/class_methods/run_spec.rb

@@ -3,11 +3,12 @@ require 'spec_helper'
 describe Mutant::CLI, '.run' do
   subject { object.run(argv) }
 
-  let(:object)     { described_class                                       }
-  let(:argv)       { mock('ARGV')                                          }
-  let(:attributes) { mock('Options')                                       }
-  let(:runner)     { mock('Runner', :success? => success)                  }
-  let(:instance)   { mock(described_class.name, :attributes => attributes) }
+  let(:object)     { described_class                               }
+  let(:argv)       { mock('ARGV')                                  }
+  let(:attributes) { mock('Options')                               }
+  let(:runner)     { mock('Runner', :success? => success)          }
+  let(:config)     { mock('Config')                                }
+  let(:instance)   { mock(described_class.name, :config => config) }
 
   before do 
     described_class.stub(:new => instance)
@@ -20,7 +21,7 @@ describe Mutant::CLI, '.run' do
     it { should be(0) }
 
     it 'should run with attributes' do
-      Mutant::Runner::Config.should_receive(:run).with(instance).and_return(runner)
+      Mutant::Runner::Config.should_receive(:run).with(config).and_return(runner)
       should be(0)
     end
   end
@@ -31,7 +32,7 @@ describe Mutant::CLI, '.run' do
     it { should be(1) }
 
     it 'should run with attributes' do
-      Mutant::Runner::Config.should_receive(:run).with(instance).and_return(runner)
+      Mutant::Runner::Config.should_receive(:run).with(config).and_return(runner)
       should be(1)
     end
   end