Remove more dead code

Library/Homebrew/download_strategy.rb

@@ -43,7 +43,7 @@ class VCSDownloadStrategy < AbstractDownloadStrategy
   def initialize name, resource
     super
     @ref_type, @ref = extract_ref(resource.specs)
-    @clone = HOMEBREW_CACHE/cache_filename
+    @clone = HOMEBREW_CACHE.join(cache_filename)
   end
 
   def extract_ref(specs)
@@ -51,8 +51,8 @@ class VCSDownloadStrategy < AbstractDownloadStrategy
     return key, specs[key]
   end
 
-  def cache_filename(tag=cache_tag)
-    "#{name}--#{tag}"
+  def cache_filename
+    "#{name}--#{cache_tag}"
   end
 
   def cache_tag
@@ -634,7 +634,7 @@ class CVSDownloadStrategy < VCSDownloadStrategy
     unless @clone.exist?
       HOMEBREW_CACHE.cd do
         safe_system cvspath, '-d', url, 'login'
-        safe_system cvspath, '-d', url, 'checkout', '-d', cache_filename("cvs"), mod
+        safe_system cvspath, '-d', url, 'checkout', '-d', cache_filename, mod
       end
     else
       puts "Updating #{@clone}"

Library/Homebrew/test/test_download_strategies.rb

@@ -37,18 +37,11 @@ class AbstractDownloadStrategyTests < Homebrew::TestCase
 end
 
 class VCSDownloadStrategyTests < Homebrew::TestCase
-  def setup
-    @resource = ResourceDouble.new("http://example.com/bar")
-    @strategy = VCSDownloadStrategy
-  end
-
-  def escaped(tag)
-    "#{ERB::Util.url_encode(@resource.url)}--#{tag}"
-  end
-
-  def test_explicit_name
-    downloader = @strategy.new("baz", @resource)
-    assert_equal "baz--foo", downloader.cache_filename("foo")
+  def test_cache_filename
+    resource = ResourceDouble.new("http://example.com/bar")
+    strategy = Class.new(VCSDownloadStrategy) { def cache_tag; "foo"; end }
+    downloader = strategy.new("baz", resource)
+    assert_equal "baz--foo", downloader.cache_filename
   end
 end