Add ordering mutations

[fix #1442]

lib/mutant/mutation/operators.rb

@@ -21,14 +21,20 @@ class Full < self
  all?: %i[any?],
  any?: %i[all?],
  at: %i[fetch key?],
+ detect: %i[first last],
  fetch: %i[key?],
+ find: %i[first last],
  flat_map: %i[map],
  gsub: %i[sub],
  is_a?: %i[instance_of?],
  kind_of?: %i[instance_of?],
  map: %i[each],
  match: %i[match?],
+ max: %i[first last],
+ max_by: %i[first last],
  method: %i[public_method],
+ min: %i[first last],
+ min_by: %i[first last],
  reverse_each: %i[each],
  reverse_map: %i[map each],
  reverse_merge: %i[merge],

meta/send.rb

@@ -884,3 +884,26 @@
  mutation 'foo(nil)'
  mutation 'foo(:"+__mutant__")'
 end
+
+%w[detect find max max_by min min_by].each do |selector|
+ Mutant::Meta::Example.add :send do
+ source selector
+
+ singleton_mutations
+
+ mutation 'first'
+ mutation 'last'
+ end
+
+ Mutant::Meta::Example.add :send do
+ source "#{selector}(&:block)"
+
+ singleton_mutations
+
+ mutation "#{selector}(&:block__mutant__)"
+ mutation "#{selector}(&nil)"
+ mutation 'first(&:block)'
+ mutation 'last(&:block)'
+ mutation selector
+ end
+end