Add ordering mutations

[fix #1442]
mbj · May 12, 2024 · c4c7d43 · c4c7d43
1 parent dae46ad
commit c4c7d43
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diff --git a/lib/mutant/mutation/operators.rb b/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],

diff --git a/meta/send.rb b/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