diff --git a/Library/Homebrew/config.rb b/Library/Homebrew/config.rb
new file mode 100644
index 0000000000..505c49c6ec
--- /dev/null
+++ b/Library/Homebrew/config.rb
@@ -0,0 +1,52 @@
+def cache
+  if ENV['HOMEBREW_CACHE']
+    Pathname.new(ENV['HOMEBREW_CACHE'])
+  else
+    # we do this for historic reasons, however the cache *should* be the same
+    # directory whichever user is used and whatever instance of brew is executed
+    home_cache = Pathname.new("~/Library/Caches/Homebrew").expand_path
+    if home_cache.directory? and home_cache.writable_real?
+      home_cache
+    else
+      Pathname.new("/Library/Caches/Homebrew").extend Module.new {
+        def mkpath
+          unless exist?
+            super
+            chmod 0775
+          end
+        end
+      }
+    end
+  end
+end
+
+HOMEBREW_CACHE = cache
+undef cache
+
+# Where brews installed via URL are cached
+HOMEBREW_CACHE_FORMULA = HOMEBREW_CACHE+"Formula"
+
+if not defined? HOMEBREW_BREW_FILE
+  HOMEBREW_BREW_FILE = ENV['HOMEBREW_BREW_FILE'] || which('brew').to_s
+end
+
+# Where we link under
+HOMEBREW_PREFIX = Pathname.new(HOMEBREW_BREW_FILE).dirname.parent
+
+# Where .git is found
+HOMEBREW_REPOSITORY = Pathname.new(HOMEBREW_BREW_FILE).realpath.dirname.parent
+
+HOMEBREW_LIBRARY = HOMEBREW_REPOSITORY/"Library"
+HOMEBREW_CONTRIB = HOMEBREW_REPOSITORY/"Library/Contributions"
+
+# Where we store built products; /usr/local/Cellar if it exists,
+# otherwise a Cellar relative to the Repository.
+HOMEBREW_CELLAR = if (HOMEBREW_PREFIX+"Cellar").exist?
+  HOMEBREW_PREFIX+"Cellar"
+else
+  HOMEBREW_REPOSITORY+"Cellar"
+end
+
+HOMEBREW_LOGS = Pathname.new(ENV['HOMEBREW_LOGS'] || '~/Library/Logs/Homebrew/').expand_path
+
+HOMEBREW_TEMP = Pathname.new(ENV.fetch('HOMEBREW_TEMP', '/tmp'))
diff --git a/Library/Homebrew/global.rb b/Library/Homebrew/global.rb
index 442671518e..7374bd5e83 100644
--- a/Library/Homebrew/global.rb
+++ b/Library/Homebrew/global.rb
@@ -16,58 +16,7 @@ ARGV.extend(HomebrewArgvExtension)
 HOMEBREW_VERSION = '0.9.5'
 HOMEBREW_WWW = 'http://brew.sh'
 
-def cache
-  if ENV['HOMEBREW_CACHE']
-    Pathname.new(ENV['HOMEBREW_CACHE'])
-  else
-    # we do this for historic reasons, however the cache *should* be the same
-    # directory whichever user is used and whatever instance of brew is executed
-    home_cache = Pathname.new("~/Library/Caches/Homebrew").expand_path
-    if home_cache.directory? and home_cache.writable_real?
-      home_cache
-    else
-      Pathname.new("/Library/Caches/Homebrew").extend Module.new {
-        def mkpath
-          unless exist?
-            super
-            chmod 0775
-          end
-        end
-      }
-    end
-  end
-end
-
-HOMEBREW_CACHE = cache
-undef cache
-
-# Where brews installed via URL are cached
-HOMEBREW_CACHE_FORMULA = HOMEBREW_CACHE+"Formula"
-
-if not defined? HOMEBREW_BREW_FILE
-  HOMEBREW_BREW_FILE = ENV['HOMEBREW_BREW_FILE'] || which('brew').to_s
-end
-
-# Where we link under
-HOMEBREW_PREFIX = Pathname.new(HOMEBREW_BREW_FILE).dirname.parent
-
-# Where .git is found
-HOMEBREW_REPOSITORY = Pathname.new(HOMEBREW_BREW_FILE).realpath.dirname.parent
-
-HOMEBREW_LIBRARY = HOMEBREW_REPOSITORY/"Library"
-HOMEBREW_CONTRIB = HOMEBREW_REPOSITORY/"Library/Contributions"
-
-# Where we store built products; /usr/local/Cellar if it exists,
-# otherwise a Cellar relative to the Repository.
-HOMEBREW_CELLAR = if (HOMEBREW_PREFIX+"Cellar").exist?
-  HOMEBREW_PREFIX+"Cellar"
-else
-  HOMEBREW_REPOSITORY+"Cellar"
-end
-
-HOMEBREW_LOGS = Pathname.new(ENV['HOMEBREW_LOGS'] || '~/Library/Logs/Homebrew/').expand_path
-
-HOMEBREW_TEMP = Pathname.new(ENV.fetch('HOMEBREW_TEMP', '/tmp'))
+require "config"
 
 if RbConfig.respond_to?(:ruby)
   RUBY_PATH = Pathname.new(RbConfig.ruby)
diff --git a/Library/Homebrew/test/lib/config.rb b/Library/Homebrew/test/lib/config.rb
new file mode 100644
index 0000000000..63b3e00640
--- /dev/null
+++ b/Library/Homebrew/test/lib/config.rb
@@ -0,0 +1,8 @@
+HOMEBREW_PREFIX        = Pathname.new(TEST_TMPDIR).join("prefix")
+HOMEBREW_REPOSITORY    = HOMEBREW_PREFIX
+HOMEBREW_LIBRARY       = HOMEBREW_REPOSITORY+"Library"
+HOMEBREW_CACHE         = HOMEBREW_PREFIX.parent+"cache"
+HOMEBREW_CACHE_FORMULA = HOMEBREW_PREFIX.parent+"formula_cache"
+HOMEBREW_CELLAR        = HOMEBREW_PREFIX.parent+"cellar"
+HOMEBREW_LOGS          = HOMEBREW_PREFIX.parent+"logs"
+HOMEBREW_TEMP          = Pathname.new(ENV["HOMEBREW_TEMP"] || "/tmp")
diff --git a/Library/Homebrew/test/testing_env.rb b/Library/Homebrew/test/testing_env.rb
index fc5d80441b..8e907e24a2 100644
--- a/Library/Homebrew/test/testing_env.rb
+++ b/Library/Homebrew/test/testing_env.rb
@@ -1,51 +1,12 @@
-# Require this file to build a testing environment.
+$:.unshift File.expand_path("../..", __FILE__)
+$:.unshift File.expand_path("../lib", __FILE__)
 
-$:.push(File.expand_path(__FILE__+'/../..'))
-
-require 'extend/module'
-require 'extend/fileutils'
-require 'extend/pathname'
-require 'extend/ARGV'
-require 'extend/string'
-require 'extend/symbol'
-require 'extend/enumerable'
-require 'exceptions'
-require 'utils'
-require 'rbconfig'
-require 'tmpdir'
+require "tmpdir"
 
 TEST_TMPDIR = Dir.mktmpdir("homebrew_tests")
 at_exit { FileUtils.remove_entry(TEST_TMPDIR) }
 
-# Constants normally defined in global.rb
-HOMEBREW_PREFIX        = Pathname.new(TEST_TMPDIR).join("prefix")
-HOMEBREW_REPOSITORY    = HOMEBREW_PREFIX
-HOMEBREW_LIBRARY       = HOMEBREW_REPOSITORY+'Library'
-HOMEBREW_CACHE         = HOMEBREW_PREFIX.parent+'cache'
-HOMEBREW_CACHE_FORMULA = HOMEBREW_PREFIX.parent+'formula_cache'
-HOMEBREW_CELLAR        = HOMEBREW_PREFIX.parent+'cellar'
-HOMEBREW_LOGS          = HOMEBREW_PREFIX.parent+'logs'
-HOMEBREW_TEMP          = Pathname.new(ENV.fetch('HOMEBREW_TEMP', '/tmp'))
-HOMEBREW_USER_AGENT    = 'Homebrew'
-HOMEBREW_WWW           = 'http://example.com'
-HOMEBREW_CURL_ARGS     = '-fsLA'
-HOMEBREW_VERSION       = '0.9-test'
-
-require 'tap_constants'
-
-if RbConfig.respond_to?(:ruby)
-  RUBY_PATH = Pathname.new(RbConfig.ruby)
-else
-  RUBY_PATH = Pathname.new(RbConfig::CONFIG["bindir"]).join(
-    RbConfig::CONFIG["ruby_install_name"] + RbConfig::CONFIG["EXEEXT"]
-  )
-end
-RUBY_BIN = RUBY_PATH.dirname
-
-MACOS_FULL_VERSION = `/usr/bin/sw_vers -productVersion`.chomp
-MACOS_VERSION = ENV.fetch('MACOS_VERSION') { MACOS_FULL_VERSION[/10\.\d+/] }
-
-ORIGINAL_PATHS = ENV['PATH'].split(File::PATH_SEPARATOR).map{ |p| Pathname.new(p).expand_path rescue nil }.compact.freeze
+require "global"
 
 # Test environment setup
 %w{ENV Formula}.each { |d| HOMEBREW_LIBRARY.join(d).mkpath }
@@ -54,8 +15,6 @@ ORIGINAL_PATHS = ENV['PATH'].split(File::PATH_SEPARATOR).map{ |p| Pathname.new(p
 # Test fixtures and files can be found relative to this path
 TEST_DIRECTORY = File.dirname(File.expand_path(__FILE__))
 
-ARGV.extend(HomebrewArgvExtension)
-
 begin
   require "rubygems"
   require "minitest/autorun"
@@ -65,9 +24,6 @@ rescue LoadError
 end
 
 module Homebrew
-  include FileUtils
-  extend self
-
   module VersionAssertions
     def version v
       Version.new(v)