Namespace method aliases

There's a conflict when another gem has a monekypatch method named `original_require`. By adding a namespace we should ensure that there no conflict.

lib/dead_end/auto.rb

@@ -5,27 +5,27 @@
 # Monkey patch kernel to ensure that all `require` calls call the same
 # method
 module Kernel
-  alias_method :original_require, :require
-  alias_method :original_require_relative, :require_relative
-  alias_method :original_load, :load
+  alias_method :dead_end_original_require, :require
+  alias_method :dead_end_original_require_relative, :require_relative
+  alias_method :dead_end_original_load, :load
 
   def load(file, wrap = false)
-    original_load(file)
+    dead_end_original_load(file)
   rescue SyntaxError => e
     DeadEnd.handle_error(e)
   end
 
   def require(file)
-    original_require(file)
+    dead_end_original_require(file)
   rescue SyntaxError => e
     DeadEnd.handle_error(e)
   end
 
   def require_relative(file)
     if Pathname.new(file).absolute?
-      original_require file
+      dead_end_original_require file
     else
-      original_require File.expand_path("../#{file}", caller_locations(1, 1)[0].absolute_path)
+      dead_end_original_require File.expand_path("../#{file}", caller_locations(1, 1)[0].absolute_path)
     end
   rescue SyntaxError => e
     DeadEnd.handle_error(e)
@@ -62,7 +62,7 @@ module DeadEnd
 # we can attempt to disable this behavior in a production context.
 if !DeadEnd::IsProduction.call
   class NoMethodError
-    alias :original_to_s :to_s
+    alias :dead_end_original_to_s :to_s
 
     def to_s
       return super if DeadEnd::IsProduction.call
@@ -93,7 +93,7 @@ def to_s
       message << $/
       message
     rescue => e
-      puts "DeadEnd Internal error: #{e.original_to_s}"
+      puts "DeadEnd Internal error: #{e.dead_end_original_to_s}"
       puts "DeadEnd Internal backtrace:"
       puts backtrace.map {|l| "    " + l }.join($/)
       super

spec/integration/ruby_command_line_spec.rb

@@ -4,6 +4,31 @@
 
 module DeadEnd
   RSpec.describe "Requires with ruby cli" do
+    it "namespaces all monkeypatched methods" do
+      Dir.mktmpdir do |dir|
+        @tmpdir = Pathname(dir)
+        @script = @tmpdir.join("script.rb")
+        @script.write <<~'EOM'
+          puts Kernel.private_methods
+        EOM
+
+        dead_end_methods_array = `ruby -I#{lib_dir} -rdead_end/auto #{@script} 2>&1`.strip.lines.map(&:strip)
+        kernel_methods_array = `ruby #{@script} 2>&1`.strip.lines.map(&:strip)
+        methods = (dead_end_methods_array - kernel_methods_array).sort
+        expect(methods).to eq(["dead_end_original_load", "dead_end_original_require", "dead_end_original_require_relative", "timeout"])
+
+
+        @script.write <<~'EOM'
+          puts Kernel.private_methods
+        EOM
+
+        dead_end_methods_array = `ruby -I#{lib_dir} -rdead_end/auto #{@script} 2>&1`.strip.lines.map(&:strip)
+        kernel_methods_array = `ruby #{@script} 2>&1`.strip.lines.map(&:strip)
+        methods = (dead_end_methods_array - kernel_methods_array).sort
+        expect(methods).to eq(["dead_end_original_load", "dead_end_original_require", "dead_end_original_require_relative", "timeout"])
+      end
+    end
+
     it "does not get in an infinite loop when NoMethodError is raised internally" do
       Dir.mktmpdir do |dir|
         @tmpdir = Pathname(dir)