Remove remove_method mutation

Ref #108

lib/mutant/mutator/node/define.rb

@@ -60,20 +60,6 @@ module Mutant
 
           children :name, :arguments, :body
 
-          # Emit mutations
-          #
-          # @return [undefined]
-          def dispatch
-            super()
-            emit_remove_method
-          end
-
-          # Remove an instance method
-          #
-          # @return [undefined]
-          def emit_remove_method
-            emit(s(:send, nil, :remove_method, s(:sym, name)))
-          end
         end # Instance
 
         # Mutator for singleton method defines

meta/def.rb

@@ -2,7 +2,6 @@ Mutant::Meta::Example.add :def do
   source 'def foo; end'
 
   mutation 'def foo; raise; end'
-  mutation 'remove_method :foo'
 end
 
 Mutant::Meta::Example.add :def do
@@ -15,7 +14,6 @@ Mutant::Meta::Example.add :def do
   mutation 'def foo(a); nil; end'
   mutation 'def foo(*b); nil; end'
   mutation 'def foo(a, *b); b = []; nil; end'
-  mutation 'remove_method :foo'
 end
 
 Mutant::Meta::Example.add :def do
@@ -27,7 +25,6 @@ Mutant::Meta::Example.add :def do
   mutation 'def foo(a, *); raise; end'
   mutation 'def foo(a); nil; end'
   mutation 'def foo(*); nil; end'
-  mutation 'remove_method :foo'
 end
 
 Mutant::Meta::Example.add :def do
@@ -37,7 +34,6 @@ Mutant::Meta::Example.add :def do
   mutation 'def foo; nil; rescue; end'
   mutation 'def foo; self; rescue; end'
   mutation 'def foo; end'
-  mutation 'remove_method :foo'
 
   # Promote rescue resbody bodies
   mutation 'def foo; foo; end'
@@ -69,7 +65,6 @@ Mutant::Meta::Example.add :def do
   # Failing body
   mutation 'def a; raise; end'
 
-  mutation 'remove_method :a'
 end
 
 Mutant::Meta::Example.add :def do
@@ -90,7 +85,6 @@ Mutant::Meta::Example.add :def do
 
   mutation 'def foo; raise; end'
 
-  mutation 'remove_method :foo'
 end
 
 Mutant::Meta::Example.add :def do
@@ -110,7 +104,6 @@ Mutant::Meta::Example.add :def do
   # Mutation of body
   mutation 'def foo(a, b); raise; end'
 
-  mutation 'remove_method :foo'
 end
 
 Mutant::Meta::Example.add :def do
@@ -127,7 +120,6 @@ Mutant::Meta::Example.add :def do
   mutation 'def foo(b = nil); true; end'
   mutation 'def foo(a, _b = nil); true; end'
   mutation 'def foo(a, b); true; end'
-  mutation 'remove_method :foo'
 end
 
 Mutant::Meta::Example.add :def do
@@ -135,7 +127,6 @@ Mutant::Meta::Example.add :def do
 
   mutation 'def foo(_unused); raise; end'
   mutation 'def foo; end'
-  mutation 'remove_method :foo'
 end
 
 Mutant::Meta::Example.add :def do
@@ -146,7 +137,6 @@ Mutant::Meta::Example.add :def do
   mutation 'def foo(_unused = true); raise; end'
   mutation 'def foo(_unused); end'
   mutation 'def foo; end'
-  mutation 'remove_method :foo'
 end
 
 Mutant::Meta::Example.add :def do
@@ -168,7 +158,6 @@ Mutant::Meta::Example.add :def do
   mutation 'def foo(a = 0, b = 0); a = 0; end'
   mutation 'def foo(a = 0, b = 0); b = 0; end'
   mutation 'def foo(a = 0, b = 0); raise; end'
-  mutation 'remove_method :foo'
 end
 
 Mutant::Meta::Example.add :def do
@@ -181,7 +170,6 @@ Mutant::Meta::Example.add :def do
   mutation 'def foo(_a = true); end'
   mutation 'def foo(a = true); raise; end'
   mutation 'def foo(a = true); a = true; end'
-  mutation 'remove_method :foo'
 end
 
 Mutant::Meta::Example.add :def do

meta/kwarg.rb

@@ -3,6 +3,5 @@ Mutant::Meta::Example.add :kwarg do
 
   mutation 'def foo; end'
   mutation 'def foo(bar:); raise; end'
-  mutation 'remove_method(:foo)'
   mutation 'def foo(_bar:); end'
 end

meta/kwoptarg.rb

@@ -3,7 +3,6 @@ Mutant::Meta::Example.add :kwarg do
 
   mutation 'def foo; end'
   mutation 'def foo(bar: baz); raise; end'
-  mutation 'remove_method(:foo)'
   mutation 'def foo(bar: nil); end'
   mutation 'def foo(bar: self); end'
   mutation 'def foo(bar:); end'

meta/rescue.rb

@@ -74,8 +74,6 @@ Mutant::Meta::Example.add :rescue do
 
   # Failing body
   mutation 'def a; raise; end'
-
-  mutation 'remove_method :a'
 end
 
 Mutant::Meta::Example.add :rescue do

meta/restarg.rb

@@ -4,5 +4,4 @@ Mutant::Meta::Example.add :restarg do
   mutation 'def foo; end'
   mutation 'def foo(*bar); bar = []; end'
   mutation 'def foo(*bar); raise; end'
-  mutation 'remove_method(:foo)'
 end

spec/unit/mutant/subject/method/instance_spec.rb

@@ -122,11 +122,6 @@ RSpec.describe Mutant::Subject::Method::Instance::Memoized do
           object,
           s(:begin,
             s(:def, :foo, s(:args), nil), s(:send, nil, :memoize, s(:args, s(:sym, :foo))))
-        ),
-        Mutant::Mutation::Evil.new(
-          object,
-          s(:begin,
-            s(:send, nil, :remove_method, s(:sym, :foo)), s(:send, nil, :memoize, s(:args, s(:sym, :foo))))
         )
       ]
     end