Extract meta duplication to regexp_mutations

config/flay.yml

@@ -1,3 +1,3 @@
 ---
 threshold: 16
-total_score: 1284
+total_score: 1290

lib/mutant/meta/example/dsl.rb

@@ -75,6 +75,14 @@ module Mutant
           mutation('self')
         end
 
+        # Add regexp mutations
+        #
+        # @return [undefined]
+        def regexp_mutations
+          mutation('//')
+          mutation('/nomatch\A/')
+        end
+
         # Helper method to coerce input to node
         #
         # @param [String,Parser::AST::Node] input

meta/regexp.rb

@@ -2,56 +2,39 @@ Mutant::Meta::Example.add :regexp do
   source '/foo/'
 
   singleton_mutations
-
-  # match all inputs
-  mutation '//'
-
-  # match no input
-  mutation '/nomatch\A/'
+  regexp_mutations
 end
 
 Mutant::Meta::Example.add :regexp do
   source '/#{foo.bar}n/'
 
   singleton_mutations
+  regexp_mutations
+
   mutation '/#{foo}n/'
   mutation '/#{self.bar}n/'
   mutation '/#{nil}n/'
   mutation '/#{self}n/'
-
-  # match all inputs
-  mutation '//'
-
-  # match no input
-  mutation '/nomatch\A/'
 end
 
 Mutant::Meta::Example.add :regexp do
   source '/#{foo}/'
 
   singleton_mutations
+  regexp_mutations
+
   mutation '/#{self}/'
   mutation '/#{nil}/'
-
-  # match all inputs
-  mutation '//'
-
-  # match no input
-  mutation '/nomatch\A/'
 end
 
 Mutant::Meta::Example.add :regexp do
   source '/#{foo}#{nil}/'
 
   singleton_mutations
+  regexp_mutations
+
   mutation '/#{nil}#{nil}/'
   mutation '/#{self}#{nil}/'
-
-  # match all inputs
-  mutation '//'
-
-  # match no input
-  mutation '/nomatch\A/'
 end
 
 Mutant::Meta::Example.add :regexp do
@@ -85,12 +68,7 @@ Mutant::Meta::Example.add :regexp do
   source '/(?(1)(foo)(bar))/'
 
   singleton_mutations
-
-  # match all inputs
-  mutation '//'
-
-  # match no input
-  mutation '/nomatch\A/'
+  regexp_mutations
 end
 
 Pathname

meta/regexp/regexp_bol_anchor.rb

@@ -2,12 +2,7 @@ Mutant::Meta::Example.add :regexp_bol_anchor do
   source '/^/'
 
   singleton_mutations
-
-  # match all inputs
-  mutation '//'
-
-  # match no input
-  mutation '/nomatch\A/'
+  regexp_mutations
 
   mutation '/\\A/'
 end

meta/regexp/regexp_bos_anchor.rb

@@ -2,25 +2,15 @@ Mutant::Meta::Example.add :regexp_bos_anchor do
   source '/\A/'
 
   singleton_mutations
-
-  # match all inputs
-  mutation '//'
-
-  # match no input
-  mutation '/nomatch\A/'
+  regexp_mutations
 end
 
 Mutant::Meta::Example.add :regexp_bos_anchor do
   source '/^#{a}/'
 
   singleton_mutations
+  regexp_mutations
 
   mutation '/^#{nil}/'
   mutation '/^#{self}/'
-
-  # match all inputs
-  mutation '//'
-
-  # match no input
-  mutation '/nomatch\A/'
 end

meta/regexp/regexp_root_expression.rb

@@ -2,12 +2,7 @@ Mutant::Meta::Example.add :regexp_root_expression do
   source '/^/'
 
   singleton_mutations
-
-  # match all inputs
-  mutation '//'
-
-  # match no input
-  mutation '/nomatch\A/'
+  regexp_mutations
 
   mutation '/\\A/'
 end

spec/unit/mutant/meta/example/dsl_spec.rb

@@ -76,6 +76,22 @@ RSpec.describe Mutant::Meta::Example::DSL do
       end
     end
 
+    context 'using #regexp_mutations' do
+      let(:expected) do
+        [s(:regexp, s(:regopt)), s(:regexp, s(:str, 'nomatch\\A'), s(:regopt))]
+      end
+
+      let(:node) do
+        s(:regexp, s(:str, 'foo'), s(:regopt))
+      end
+
+      expect_example do
+        source '/foo/'
+
+        regexp_mutations
+      end
+    end
+
     context 'no definition of source' do
       expect_error('source not defined') do
       end