Add mutator for self nodes

lib/mutant/mutator/node/generic.rb

@@ -5,8 +5,6 @@ module Mutant
       # Generic mutator
       class Generic < self
 
-        handle(:self)
-
         # These nodes still need a dedicated mutator,
         # your contribution is that close!
         handle(

lib/mutant/mutator/node/named_value/access.rb

@@ -3,10 +3,10 @@ module Mutant
     class Node
       module NamedValue
 
-        # Mutation emitter to handle value access nodes
+        # Mutation emitter to handle named value access nodes
         class Access < Node
 
-          handle(:gvar, :cvar, :ivar, :lvar, :const)
+          handle(:gvar, :cvar, :ivar, :lvar, :const, :self)
 
         private
 

spec/unit/mutant/mutator/node/named_value/access/mutation_spec.rb

@@ -74,4 +74,15 @@ describe Mutant::Mutator::Node::NamedValue::Access, 'mutations' do
 
     it_should_behave_like 'a mutator'
   end
+
+  context 'self' do
+    let(:source) { 'self' }
+
+    let(:mutations) do
+      mutants = []
+      mutants << 'nil'
+    end
+
+    it_should_behave_like 'a mutator'
+  end
 end

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

@@ -9,6 +9,7 @@ describe Mutant::Mutator, 'send' do
     let(:mutations) do
       mutations = []
       mutations << 'foo ||= expression'
+      mutations << 'nil.foo ||= expression'
     end
 
     it_should_behave_like 'a mutator'
@@ -74,6 +75,7 @@ describe Mutant::Mutator, 'send' do
         mutations = []
         mutations << 'foo'
         mutations << 'self'
+        mutations << 'nil.foo'
       end
 
       it_should_behave_like 'a mutator'
@@ -111,6 +113,7 @@ describe Mutant::Mutator, 'send' do
         mutations = []
         mutations << 'self.class'
         mutations << 'self.foo'
+        mutations << 'nil.class.foo'
       end
 
       it_should_behave_like 'a mutator'
@@ -142,6 +145,7 @@ describe Mutant::Mutator, 'send' do
         mutations << 'foo(nil)'
         mutations << 'nil'
         mutations << 'self.foo(::Object.new)'
+        mutations << 'nil.foo(nil)'
       end
 
       it_should_behave_like 'a mutator'

spec/unit/mutant/mutator/self_spec.rb

@@ -1,7 +0,0 @@
-require 'spec_helper'
-
-describe Mutant::Mutator, 'self' do
-  let(:source) { 'self' }
-
-  it_should_behave_like 'a noop mutator'
-end