Suppress uninitialized instance variable warnings

Library/Homebrew/download_strategy.rb

@@ -29,19 +29,21 @@ class AbstractDownloadStrategy
 end
 
 class CurlDownloadStrategy < AbstractDownloadStrategy
-  attr_reader :tarball_path, :local_bottle_path
-  attr_writer :local_bottle_path
+  attr_reader :tarball_path
+  attr_accessor :local_bottle_path
 
   def initialize name, package
     super
-    @mirrors = package.mirrors
-    @unique_token = "#{name}-#{package.version}" unless name.to_s.empty? or name == '__UNKNOWN__'
-    if @unique_token
-      @tarball_path=HOMEBREW_CACHE+(@unique_token+ext)
+
+    if name.to_s.empty? || name == '__UNKNOWN__'
+      @tarball_path = HOMEBREW_CACHE + File.basename(@url)
     else
-      @tarball_path=HOMEBREW_CACHE+File.basename(@url)
+      @tarball_path = HOMEBREW_CACHE + "#{name}-#{package.version}#{ext}"
     end
-    @temporary_path=Pathname.new(@tarball_path.to_s + ".incomplete")
+
+    @mirrors = package.mirrors
+    @temporary_path = Pathname("#@tarball_path.incomplete")
+    @local_bottle_path = nil
   end
 
   def cached_location

Library/Homebrew/formula_support.rb

@@ -10,6 +10,8 @@ class SoftwareSpec
     @version = version
     @mirrors = []
     @specs = {}
+    @checksum = nil
+    @using = nil
   end
 
   def download_strategy

Library/Homebrew/test/test_updater.rb

@@ -3,6 +3,7 @@ abort if ARGV.include? "--skip-update"
 require 'testing_env'
 require 'formula'
 require 'cmd/update'
+require 'yaml'
 
 class UpdaterMock < Updater
   def in_repo_expect(cmd, output = '')
@@ -36,11 +37,11 @@ class UpdaterTests < Test::Unit::TestCase
   end
 
   def self.fixture_data
-    unless @fixture_data
-      require 'yaml'
-      @fixture_data = YAML.load_file(Pathname.new(ABS__FILE__).parent.realpath + 'fixtures/updater_fixture.yaml')
+    @fixture_data ||= load_fixture_data
   end
-    @fixture_data
+
+  def self.load_fixture_data
+    YAML.load_file(Pathname.new(ABS__FILE__).parent.realpath + 'fixtures/updater_fixture.yaml')
   end
 
   def test_update_homebrew_without_any_changes