Add debug code

Author: k-tsj

lib/power_assert/context.rb

@@ -1,4 +1,43 @@
 module M
+    # set redefined flag
+    basic_classes = [
+      Integer, Float, String, Array, Hash, Symbol, Time, Regexp, NilClass, TrueClass, FalseClass
+    ]
+
+    basic_operators = [
+      :+, :-, :*, :/, :%, :==, :===, :<, :<=, :<<, :[], :[]=, :length, :size,
+      :empty?, :nil?, :succ, :>, :>=, :!, :!=, :=~, :freeze, :-@, :max, :min,
+      # :call (it is just used for block call optimization)
+      :&, :|,
+      # :default (no specialized instruction for this)
+      :pack, :include?,
+    ]
+
+    basic_classes.each do |klass|
+      basic_operators.each do |bop|
+        if klass.public_method_defined?(bop)
+          refine(klass) do
+            define_method(bop) {}
+          end
+        end
+      end
+    end
+
+    # bypass check_cfunc
+    refine BasicObject do
+      def !
+      end
+
+      def ==
+      end
+    end
+
+    refine Module do
+      def ==
+      end
+    end
+
+
   refine Class do
     def new
     end