Mutate block-pass arguments

CHANGELOG.md

@@ -6,6 +6,10 @@ The format is based on [Keep a Changelog](http://keepachangelog.com/).
 
 ## [Master (Unreleased)]
 
+### Added
+
+- Block-pass mutations (`foo(&method(:bar))` -> `foo(&public_method(:bar))`) [[#54](https://github.com/backus/mutest/pull/54/files) ([@dgollahon][])]
+
 ## [0.0.6] - 2017-03-04
 
 ### Fixed

lib/mutest.rb

@@ -123,7 +123,7 @@ def self.ci?
 require 'mutest/mutator/node/named_value/variable_assignment'
 require 'mutest/mutator/node/next'
 require 'mutest/mutator/node/break'
-require 'mutest/mutator/node/noop'
+require 'mutest/mutator/node/block_pass'
 require 'mutest/mutator/node/or_asgn'
 require 'mutest/mutator/node/and_asgn'
 require 'mutest/mutator/node/defined'

lib/mutest/mutator/node/noop.rb → lib/mutest/mutator/node/block_pass.rb

@@ -1,19 +1,20 @@
 module Mutest
   class Mutator
     class Node
-      # Mutation emitter to handle noop nodes
-      class Noop < self
-        handle(:block_pass, :cbase)
+      class BlockPass < self
+        handle(:block_pass)
+
+        children :arg
 
         private
 
         # Emit mutations
         #
         # @return [undefined]
         def dispatch
-          # noop
+          emit_arg_mutations
         end
-      end # Noop
+      end # BlockPass
     end # Node
   end # Mutator
 end # Mutest

lib/mutest/mutator/node/generic.rb

@@ -4,6 +4,7 @@ class Node
       # Generic mutator
       class Generic < self
         unsupported_nodes = %i[
+          cbase
           ensure
           redo
           retry

meta/block_pass.rb

@@ -1,6 +1,14 @@
 Mutest::Meta::Example.add :block_pass do
-  source 'foo(&bar)'
+  source 'foo(&method(:bar))'
 
   singleton_mutations
   mutation 'foo'
+  mutation 'foo(&nil)'
+  mutation 'foo(&self)'
+  mutation 'foo(&method)'
+  mutation 'foo(&method(nil))'
+  mutation 'foo(&method(self))'
+  mutation 'foo(&method(:bar__mutest__))'
+  mutation 'foo(&public_method(:bar))'
+  mutation 'foo(&:bar)'
 end

meta/send.rb

@@ -404,6 +404,8 @@
 
   singleton_mutations
   mutation 'foo'
+  mutation 'foo(&nil)'
+  mutation 'foo(&self)'
 end
 
 Mutest::Meta::Example.add :send do