Add explicit mutator for dstr

lib/mutant.rb

@@ -64,6 +64,7 @@ require 'mutant/mutator/node/arguments'
 require 'mutant/mutator/node/begin'
 require 'mutant/mutator/node/connective/binary'
 require 'mutant/mutator/node/const'
+require 'mutant/mutator/node/dstr'
 require 'mutant/mutator/node/named_value/access'
 require 'mutant/mutator/node/named_value/constant_assignment'
 require 'mutant/mutator/node/named_value/variable_assignment'

lib/mutant/mutator/node/dstr.rb

@@ -0,0 +1,15 @@
+# encoding: utf-8
+
+module Mutant
+  class Mutator
+    class Node
+
+      # Dstr mutator
+      class Dstr < Generic
+
+        handle(:dstr)
+
+      end # Dstr
+    end # Node
+  end # Mutator
+end # Mutant

lib/mutant/mutator/node/generic.rb

@@ -11,7 +11,7 @@ module Mutant
         # your contribution is that close!
         handle(
           :next, :break, :ensure,
-          :dstr, :dsym, :yield, :rescue, :redo, :defined?,
+          :dsym, :yield, :rescue, :redo, :defined?,
           :blockarg, :op_asgn, :and_asgn,
           :regopt, :restarg, :resbody, :retry, :arg_expr,
           :kwrestarg, :kwoptarg, :kwarg, :undef, :module, :empty,

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

@@ -2,7 +2,7 @@
 
 require 'spec_helper'
 
-describe Mutant::Mutator::Node::Generic, 'dstr' do
+describe Mutant::Mutator::Node::Dstr, 'dstr' do
   before do
     Mutant::Random.stub(:hex_string => 'random')
   end