test/test_alterout.rb in veils-0.3.0 vs test/test_alterout.rb in veils-0.4.0

@@ -1,10 +1,10 @@
 # frozen_string_literal: true
 
 # (The MIT License)
 #
-# Copyright (c) 2020 Yegor Bugayenko
+# Copyright (c) 2020-2023 Yegor Bugayenko
 #
 # Permission is hereby granted, free of charge, to any person obtaining a copy
 # of this software and associated documentation files (the 'Software'), to deal
 # in the Software without restriction, including without limitation the rights
 # to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
@@ -26,17 +26,31 @@
 require 'json'
 require_relative '../lib/alterout'
 
 # AlterOut test.
 # Author:: Yegor Bugayenko ([e-mail])
-# Copyright:: Copyright (c) 2020 Yegor Bugayenko
+# Copyright:: Copyright (c) 2020-2023 Yegor Bugayenko
 # License:: MIT
 class AlterOutTest < Minitest::Test
   def test_simple
     obj = Object.new
     def obj.read(val)
       val
     end
     foo = AlterOut.new(obj, read: proc { |r| r + 1 })
     assert_equal(6, foo.read(5))
+  end
+
+  def test_respond_to
+    foo = AlterOut.new(Object.new)
+    assert_equal(false, foo.respond_to?(:undefine_method))
+
+    foo = AlterOut.new(Object.new, method_return_object: Object.new)
+    assert_equal(true, foo.respond_to?(:method_return_object))
+
+    foo = AlterOut.new(Object.new, method_return_false: false)
+    assert_equal(true, foo.respond_to?(:method_return_false))
+
+    foo = AlterOut.new(Object.new, method_return_nil: nil)
+    assert_equal(true, foo.respond_to?(:method_return_nil))
   end
 end