Move reporter stats into own file and cleanup 18 spec

lib/mutant.rb

@@ -96,5 +96,6 @@ require 'mutant/cli'
 require 'mutant/color'
 require 'mutant/differ'
 require 'mutant/reporter'
+require 'mutant/reporter/stats'
 require 'mutant/reporter/null'
 require 'mutant/reporter/cli'

lib/mutant/reporter.rb

@@ -23,6 +23,16 @@ module Mutant
     #
     abstract_method :mutation
 
+    # Report notice
+    #
+    # @param [String] notice
+    #
+    # @return [self]
+    #
+    # @api private
+    #
+    abstract_method :notice
+
     # Report killer
     #
     # @param [Killer] killer

lib/mutant/reporter/cli.rb

@@ -4,36 +4,6 @@ module Mutant
     class CLI < self
       include Equalizer.new(:io)
 
-      class Stats
-        attr_reader :subject
-        attr_reader :mutation
-        attr_reader :kill
-        attr_reader :time
-
-        def initialize
-          @start = Time.now
-          @subject = @mutation = @kill = @time = 0
-        end
-
-        def runtime
-          Time.now - @start
-        end
-
-        def subject
-          @subject +=1
-        end
-
-        def alive
-          @mutation - @kill
-        end
-
-        def killer(killer)
-          @mutation +=1
-          @kill +=1 unless killer.fail?
-          @time += killer.runtime
-        end
-      end
-
       # Reporter subject
       #
       # @param [Subject] subject

lib/mutant/reporter/stats.rb

@@ -0,0 +1,64 @@
+module Mutant
+  class Reporter
+
+    # Stats gathered while reporter is running
+    class Stats
+
+      # Return subject count
+      #
+      # @return [Fixnum]
+      #
+      # @api private
+      #
+      attr_reader :subject
+
+      # Return mutation count
+      #
+      # @return [Fixnum]
+      #
+      # @api private
+      #
+      attr_reader :mutation
+
+      # Return kill count
+      #
+      # @return [Fixnum]
+      #
+      # @api private
+      #
+      attr_reader :kill
+
+      # Return mutation runtime
+      #
+      # @return [Float]
+      #
+      # @api private
+      #
+      attr_reader :time
+
+      def initialize
+        @start = Time.now
+        @subject = @mutation = @kill = @time = 0
+      end
+
+      def runtime
+        Time.now - @start
+      end
+
+      def subject
+        @subject +=1
+      end
+
+      def alive
+        @mutation - @kill
+      end
+
+      def killer(killer)
+        @mutation +=1
+        @kill +=1 unless killer.fail?
+        @time += killer.runtime
+      end
+    end
+
+  end
+end

spec/unit/mutant/mutator/node/if_statement/mutation_spec.rb

@@ -9,14 +9,7 @@ describe Mutant::Mutator, 'if statement' do
     # mutations of condition
     mutants << 'if condition; true; else false; end'
 
-    # Invert condition
+    mutants << 'if !self.condition; true; else false; end'
-    if Mutant::Helper.on_18?
-      # Explicitly define ast as 18-mode does swap if and else on parsing when negation condition is 
-      # present in condition.
-      mutants << [:if, [:not, [:call, [:self], :condition, [:arglist]]], [:true], [:false]]
-    else
-      mutants << 'if !self.condition; true; else false; end'
-    end
 
     # Deleted else branch
     mutants << 'if self.condition; true end'