Clean up test classes

Library/Homebrew/test/test_formula.rb

@@ -201,7 +201,6 @@ class FormulaTests < Test::Unit::TestCase
         class #{Formulary.class_s(name)} < Formula
           url 'foo-1.0'
           def initialize(*args)
-            @homepage = 'http://example.com/'
             super
           end
         end

Library/Homebrew/test/test_formula_install.rb

@@ -5,12 +5,10 @@ require 'keg'
 
 
 class TestScriptFileFormula < ScriptFileFormula
-  url "file:///#{Pathname.new(ABS__FILE__).realpath}"
+  url "file:///#{__FILE__}"
   version "1"
 
-  def initialize
-    @name='test-script-formula'
-    @homepage = 'http://example.com/'
+  def initialize(name="test_script_formula", path=nil)
     super
   end
 end
@@ -58,11 +56,9 @@ class InstallTests < Test::Unit::TestCase
   def test_a_basic_install
     f=TestBall.new
 
-    assert_equal Formula.path(f.name), f.path
     assert !f.installed?
 
     temporary_install f do
-      assert_match Regexp.new("^#{HOMEBREW_CELLAR}/"), f.prefix.to_s
 
       # Test that things made it into the Keg
       assert f.bin.directory?

Library/Homebrew/test/test_formula_validation.rb

@@ -49,7 +49,7 @@ class FormulaValidationTests < Test::Unit::TestCase
   def test_validates_when_initialize_overridden
     assert_invalid :name do
       formula do
-        def initialize; end
+        def initialize(*); end
       end.brew {}
     end
   end

Library/Homebrew/test/testball.rb

@@ -1,8 +1,7 @@
 require 'formula'
 
 class TestBall < Formula
-  def initialize(name="test_ball")
-    @homepage = 'http://example.com/'
+  def initialize(name="test_ball", path=nil)
     self.class.instance_eval do
       stable.url "file:///#{TEST_FOLDER}/tarballs/testball-0.1.tbz"
       stable.sha1 "482e737739d946b7c8cbaf127d9ee9c148b999f5"