Update Cask spec_helper.

Library/Homebrew/cask/spec/spec_helper.rb

@@ -1,32 +1,13 @@
-require "rspec/its"
-require "rspec/wait"
-
-if ENV["HOMEBREW_TESTS_COVERAGE"]
-  require "simplecov"
-end
-
-# add Homebrew to load path
 $LOAD_PATH.unshift(File.expand_path("#{ENV["HOMEBREW_REPOSITORY"]}/Library/Homebrew"))
-$LOAD_PATH.unshift(File.expand_path("#{ENV["HOMEBREW_REPOSITORY"]}/Library/Homebrew/test/support/lib"))
-
-require "global"
+require "test/spec_helper"
 
 # add Homebrew-Cask to load path
 $LOAD_PATH.push(HOMEBREW_LIBRARY_PATH.join("cask", "lib").to_s)
 
-require "test/support/helper/shutup"
-
 Pathname.glob(HOMEBREW_LIBRARY_PATH.join("cask", "spec", "support", "**", "*.rb")).each(&method(:require))
 
 require "hbc"
 
-# create and override default directories
-Hbc.default_tap = Tap.fetch("caskroom", "spec").tap do |tap|
-  # link test casks
-  FileUtils.mkdir_p tap.path.dirname
-  FileUtils.ln_s TEST_FIXTURE_DIR.join("cask"), tap.path
-end
-
 HOMEBREW_CASK_DIRS = [
   :appdir,
   :caskroom,
@@ -38,26 +19,24 @@ HOMEBREW_CASK_DIRS = [
 ].freeze
 
 RSpec.configure do |config|
-  config.order = :random
-  config.include(Test::Helper::Shutup)
   config.around(:each) do |example|
     begin
-      @__dirs = HOMEBREW_CASK_DIRS.map { |dir|
-        Pathname.new(TEST_TMPDIR).join(dir.to_s).tap { |path|
+      dirs = HOMEBREW_CASK_DIRS.map { |dir|
+        Pathname.new(TEST_TMPDIR).join("cask-#{dir}").tap { |path|
           path.mkpath
           Hbc.public_send("#{dir}=", path)
         }
       }
 
-      @__argv = ARGV.dup
-      @__env = ENV.to_hash # dup doesn't work on ENV
+      Hbc.default_tap = Tap.fetch("caskroom", "spec").tap do |tap|
+        # link test casks
+        FileUtils.mkdir_p tap.path.dirname
+        FileUtils.ln_sf TEST_FIXTURE_DIR.join("cask"), tap.path
+      end
 
       example.run
     ensure
-      ARGV.replace(@__argv)
-      ENV.replace(@__env)
-
-      FileUtils.rm_rf @__dirs.map(&:children)
+      FileUtils.rm_rf dirs
     end
   end
 end