find-method does not search methods created by 'extend'

[adfoster-r7]

Scenario:

Two objects:

• object_a includes a mixin
• object_b extends a mixin

module MyMixin
  def mixin_method
    "call to mixin_method #{self}"
  end
end


class ObjectA
  include MyMixin
end

class ObjectB
end


instance_a = ObjectA.new
instance_b = ObjectB.new
instance_b.extend(MyMixin)

require 'pry-byebug'; binding.pry
puts instance_a.method(:mixin_method)
puts instance_b.method(:mixin_method)

The find-method implementation doesn't work with the extend mixin scenario, only the include scenario

Current output:

[16] pry(main)> find-method mixin_method instance_a
MyMixin
MyMixin#mixin_method
[17] pry(main)> find-method mixin_method instance_b
No Methods Matched

Expected output:

[16] pry(main)> find-method mixin_method instance_a
MyMixin
MyMixin#mixin_method
[16] pry(main)> find-method mixin_method instance_a
MyMixin
MyMixin#mixin_method

Ruby itself is able to resolve the methods on the instance as expected:

#<Method: ObjectA(MyMixin)#mixin_method() test.rb:2>
#<Method: ObjectB(MyMixin)#mixin_method() test.rb:2>

Versions

• pry-0.14.2

[adfoster-r7]

I think these are the tests that I would like to have passing:

diff --git a/spec/commands/find_method_spec.rb b/spec/commands/find_method_spec.rb
index 7be22752..e489d909 100644
--- a/spec/commands/find_method_spec.rb
+++ b/spec/commands/find_method_spec.rb
@@ -1,6 +1,13 @@
 # frozen_string_literal: true
 
 describe "find-method" do
+
+  MyMixin = Module.new do
+    def mixin_method
+      "linus"
+    end
+  end
+
   MyKlass = Class.new do
     def hello
       "timothy"
@@ -19,6 +26,14 @@ describe "find-method" do
     end
   end
 
+  MyKlassWithMixin = Class.new(MyKlass) do
+    include MyMixin
+  end
+
+  MyInstanceWithMixin = MyKlass.new.tap do |instance|
+    instance.extend(MyMixin)
+  end
+
   describe "find matching methods by name regex (-n option)" do
     it "should find a method by regex" do
       expect(pry_eval(binding, "find-method hell MyKlass")).to match(
@@ -26,6 +41,18 @@ describe "find-method" do
       )
     end
 
+    it "should find included methods by regex" do
+      expect(pry_eval(binding, "find-method mix MyKlassWithMixin")).to match(
+        /MyMixin.*?mixin_method/m
+      )
+    end
+
+    it "should find extended methods by regex" do
+      expect(pry_eval(binding, "find-method mix MyInstanceWithMixin")).to match(
+        /MyMixin.*?mixin_method/m
+      )
+    end
+
     it "should NOT match a method that does not match the regex" do
       expect(pry_eval(binding, "find-method hell MyKlass")).not_to match(
         /MyKlass.*?goodbye/m
@@ -40,6 +67,18 @@ describe "find-method" do
       )
     end
 
+    it "should find included methods by regex" do
+      expect(pry_eval(binding, "find-method -c linus MyKlassWithMixin")).to match(
+        /MyMixin.*?mixin_method/m
+      )
+    end
+
+    it "should find extended methods by regex" do
+      expect(pry_eval(binding, "find-method -c linus MyInstanceWithMixin")).to match(
+        /MyMixin.*?mixin_method/m
+      )
+    end
+
     it "should NOT match a method that does not match the regex" do
       expect(pry_eval(binding, "find-method timothy MyKlass")).not_to match(
         /MyKlass.*?goodbye/m

But currently the MyInstanceWithMixin which use extend(MyMixin) scenarios fail: