Fresh start

1 files changed, 1430 insertions, 0 deletions

diff --git a/jni/ruby/lib/rubygems/test_case.rb b/jni/ruby/lib/rubygems/test_case.rb
new file mode 100644
index 0000000..5dc7a1b
--- /dev/null
+++ b/jni/ruby/lib/rubygems/test_case.rb
@@ -0,0 +1,1430 @@
+# TODO: $SAFE = 1
+
+begin
+  gem 'minitest', '~> 4.0'
+rescue NoMethodError, Gem::LoadError
+  # for ruby tests
+end
+
+if defined? Gem::QuickLoader
+  Gem::QuickLoader.load_full_rubygems_library
+else
+  require 'rubygems'
+end
+
+begin
+  gem 'minitest'
+rescue Gem::LoadError
+end
+
+# We have to load these up front because otherwise we'll try to load
+# them while we're testing rubygems, and thus we can't actually load them.
+unless Gem::Dependency.new('rdoc', '>= 3.10').matching_specs.empty?
+  gem 'rdoc'
+  gem 'json'
+end
+
+require 'minitest/autorun'
+
+require 'rubygems/deprecate'
+
+require 'fileutils'
+require 'pathname'
+require 'pp'
+require 'rubygems/package'
+require 'shellwords'
+require 'tmpdir'
+require 'uri'
+require 'zlib'
+
+Gem.load_yaml
+
+require 'rubygems/mock_gem_ui'
+
+module Gem
+
+  ##
+  # Allows setting the gem path searcher.  This method is available when
+  # requiring 'rubygems/test_case'
+
+  def self.searcher=(searcher)
+    @searcher = searcher
+  end
+
+  ##
+  # Allows toggling Windows behavior.  This method is available when requiring
+  # 'rubygems/test_case'
+
+  def self.win_platform=(val)
+    @@win_platform = val
+  end
+
+  ##
+  # Allows setting path to Ruby.  This method is available when requiring
+  # 'rubygems/test_case'
+
+  def self.ruby= ruby
+    @ruby = ruby
+  end
+
+  ##
+  # When rubygems/test_case is required the default user interaction is a
+  # MockGemUi.
+
+  module DefaultUserInteraction
+    @ui = Gem::MockGemUi.new
+  end
+end
+
+##
+# RubyGemTestCase provides a variety of methods for testing rubygems and
+# gem-related behavior in a sandbox.  Through RubyGemTestCase you can install
+# and uninstall gems, fetch remote gems through a stub fetcher and be assured
+# your normal set of gems is not affected.
+#
+# Tests are always run at a safe level of 1.
+
+class Gem::TestCase < MiniTest::Unit::TestCase
+
+  attr_accessor :fetcher # :nodoc:
+
+  attr_accessor :gem_repo # :nodoc:
+
+  attr_accessor :uri # :nodoc:
+
+  def assert_activate expected, *specs
+    specs.each do |spec|
+      case spec
+      when String then
+        Gem::Specification.find_by_name(spec).activate
+      when Gem::Specification then
+        spec.activate
+      else
+        flunk spec.inspect
+      end
+    end
+
+    loaded = Gem.loaded_specs.values.map(&:full_name)
+
+    assert_equal expected.sort, loaded.sort if expected
+  end
+
+  # TODO: move to minitest
+  def assert_path_exists path, msg = nil
+    msg = message(msg) { "Expected path '#{path}' to exist" }
+    assert File.exist?(path), msg
+  end
+
+  ##
+  # Sets the ENABLE_SHARED entry in RbConfig::CONFIG to +value+ and restores
+  # the original value when the block ends
+
+  def enable_shared value
+    enable_shared = RbConfig::CONFIG['ENABLE_SHARED']
+    RbConfig::CONFIG['ENABLE_SHARED'] = value
+
+    yield
+  ensure
+    if enable_shared then
+      RbConfig::CONFIG['enable_shared'] = enable_shared
+    else
+      RbConfig::CONFIG.delete 'enable_shared'
+    end
+  end
+
+  # TODO: move to minitest
+  def refute_path_exists path, msg = nil
+    msg = message(msg) { "Expected path '#{path}' to not exist" }
+    refute File.exist?(path), msg
+  end
+
+  def scan_make_command_lines(output)
+    output.scan(/^#{Regexp.escape make_command}(?:[[:blank:]].*)?$/)
+  end
+
+  def parse_make_command_line(line)
+    command, *args = line.shellsplit
+
+    targets = []
+    macros = {}
+
+    args.each do |arg|
+      case arg
+      when /\A(\w+)=/
+        macros[$1] = $'
+      else
+        targets << arg
+      end
+    end
+
+    targets << '' if targets.empty?
+
+    {
+      :command => command,
+      :targets => targets,
+      :macros => macros,
+    }
+  end
+
+  def assert_contains_make_command(target, output, msg = nil)
+    if output.match(/\n/)
+      msg = message(msg) {
+        'Expected output containing make command "%s": %s' % [
+          ('%s %s' % [make_command, target]).rstrip,
+          output.inspect
+        ]
+      }
+    else
+      msg = message(msg) {
+        'Expected make command "%s": %s' % [
+          ('%s %s' % [make_command, target]).rstrip,
+          output.inspect
+        ]
+      }
+    end
+
+    assert scan_make_command_lines(output).any? { |line|
+      make = parse_make_command_line(line)
+
+      if make[:targets].include?(target)
+        yield make, line if block_given?
+        true
+      else
+        false
+      end
+    }, msg
+  end
+
+  include Gem::DefaultUserInteraction
+
+  undef_method :default_test if instance_methods.include? 'default_test' or
+                                instance_methods.include? :default_test
+
+  @@project_dir = Dir.pwd.untaint unless defined?(@@project_dir)
+
+  @@initial_reset = false
+
+  ##
+  # #setup prepares a sandboxed location to install gems.  All installs are
+  # directed to a temporary directory.  All install plugins are removed.
+  #
+  # If the +RUBY+ environment variable is set the given path is used for
+  # Gem::ruby.  The local platform is set to <tt>i386-mswin32</tt> for Windows
+  # or <tt>i686-darwin8.10.1</tt> otherwise.
+  #
+  # If the +KEEP_FILES+ environment variable is set the files will not be
+  # removed from <tt>/tmp/test_rubygems_#{$$}.#{Time.now.to_i}</tt>.
+
+  def setup
+    super
+
+    @orig_gem_home   = ENV['GEM_HOME']
+    @orig_gem_path   = ENV['GEM_PATH']
+    @orig_gem_vendor = ENV['GEM_VENDOR']
+
+    ENV['GEM_VENDOR'] = nil
+
+    @current_dir = Dir.pwd
+    @fetcher     = nil
+    @ui          = Gem::MockGemUi.new
+
+    tmpdir = File.expand_path Dir.tmpdir
+    tmpdir.untaint
+
+    if ENV['KEEP_FILES'] then
+      @tempdir = File.join(tmpdir, "test_rubygems_#{$$}.#{Time.now.to_i}")
+    else
+      @tempdir = File.join(tmpdir, "test_rubygems_#{$$}")
+    end
+    @tempdir.untaint
+
+    FileUtils.mkdir_p @tempdir
+
+    # This makes the tempdir consistent on OS X.
+    # File.expand_path Dir.tmpdir                      #=> "/var/..."
+    # Dir.chdir Dir.tmpdir do File.expand_path '.' end #=> "/private/var/..."
+    # TODO use File#realpath above instead of #expand_path once 1.8 support is
+    # dropped.
+    Dir.chdir @tempdir do
+      @tempdir = File.expand_path '.'
+      @tempdir.untaint
+    end
+
+    @gemhome  = File.join @tempdir, 'gemhome'
+    @userhome = File.join @tempdir, 'userhome'
+    ENV["GEM_SPEC_CACHE"] = File.join @tempdir, 'spec_cache'
+
+    @orig_ruby = if ENV['RUBY'] then
+                   ruby = Gem.ruby
+                   Gem.ruby = ENV['RUBY']
+                   ruby
+                 end
+
+    @git = ENV['GIT'] || 'git'
+
+    Gem.ensure_gem_subdirectories @gemhome
+
+    @orig_LOAD_PATH = $LOAD_PATH.dup
+    $LOAD_PATH.map! { |s| File.expand_path(s).untaint }
+
+    Dir.chdir @tempdir
+
+    @orig_ENV_HOME = ENV['HOME']
+    ENV['HOME'] = @userhome
+    Gem.instance_variable_set :@user_home, nil
+    Gem.send :remove_instance_variable, :@ruby_version if
+      Gem.instance_variables.include? :@ruby_version
+
+    FileUtils.mkdir_p @gemhome
+    FileUtils.mkdir_p @userhome
+
+    @orig_gem_private_key_passphrase = ENV['GEM_PRIVATE_KEY_PASSPHRASE']
+    ENV['GEM_PRIVATE_KEY_PASSPHRASE'] = PRIVATE_KEY_PASSPHRASE
+
+    @default_dir = File.join @tempdir, 'default'
+    @default_spec_dir = File.join @default_dir, "specifications", "default"
+    Gem.instance_variable_set :@default_dir, @default_dir
+    FileUtils.mkdir_p @default_spec_dir
+
+    # We use Gem::Specification.reset the first time only so that if there
+    # are unresolved deps that leak into the whole test suite, they're at least
+    # reported once.
+    if @@initial_reset
+      Gem::Specification.unresolved_deps.clear # done to avoid cross-test warnings
+    else
+      @@initial_reset = true
+      Gem::Specification.reset
+    end
+    Gem.use_paths(@gemhome)
+
+    Gem::Security.reset
+
+    Gem.loaded_specs.clear
+    Gem.clear_default_specs
+    Gem::Specification.unresolved_deps.clear
+
+    Gem.configuration.verbose = true
+    Gem.configuration.update_sources = true
+
+    Gem::RemoteFetcher.fetcher = Gem::FakeFetcher.new
+
+    @gem_repo = "http://gems.example.com/"
+    @uri = URI.parse @gem_repo
+    Gem.sources.replace [@gem_repo]
+
+    Gem.searcher = nil
+    Gem::SpecFetcher.fetcher = nil
+    @orig_BASERUBY = RbConfig::CONFIG['BASERUBY']
+    RbConfig::CONFIG['BASERUBY'] = RbConfig::CONFIG['ruby_install_name']
+
+    @orig_arch = RbConfig::CONFIG['arch']
+
+    if win_platform?
+      util_set_arch 'i386-mswin32'
+    else
+      util_set_arch 'i686-darwin8.10.1'
+    end
+
+    @marshal_version = "#{Marshal::MAJOR_VERSION}.#{Marshal::MINOR_VERSION}"
+  end
+
+  ##
+  # #teardown restores the process to its original state and removes the
+  # tempdir unless the +KEEP_FILES+ environment variable was set.
+
+  def teardown
+    $LOAD_PATH.replace @orig_LOAD_PATH if @orig_LOAD_PATH
+
+    if @orig_BASERUBY
+      RbConfig::CONFIG['BASERUBY'] = @orig_BASERUBY
+    else
+      RbConfig::CONFIG.delete('BASERUBY')
+    end
+    RbConfig::CONFIG['arch'] = @orig_arch
+
+    if defined? Gem::RemoteFetcher then
+      Gem::RemoteFetcher.fetcher = nil
+    end
+
+    Dir.chdir @current_dir
+
+    FileUtils.rm_rf @tempdir unless ENV['KEEP_FILES']
+
+    ENV['GEM_HOME']   = @orig_gem_home
+    ENV['GEM_PATH']   = @orig_gem_path
+    ENV['GEM_VENDOR'] = @orig_gem_vendor
+
+    Gem.ruby = @orig_ruby if @orig_ruby
+
+    if @orig_ENV_HOME then
+      ENV['HOME'] = @orig_ENV_HOME
+    else
+      ENV.delete 'HOME'
+    end
+
+    Gem.instance_variable_set :@default_dir, nil
+
+    ENV['GEM_PRIVATE_KEY_PASSPHRASE'] = @orig_gem_private_key_passphrase
+
+    Gem::Specification._clear_load_cache
+  end
+
+  def common_installer_setup
+    common_installer_teardown
+
+    Gem.post_build do |installer|
+      @post_build_hook_arg = installer
+      true
+    end
+
+    Gem.post_install do |installer|
+      @post_install_hook_arg = installer
+    end
+
+    Gem.post_uninstall do |uninstaller|
+      @post_uninstall_hook_arg = uninstaller
+    end
+
+    Gem.pre_install do |installer|
+      @pre_install_hook_arg = installer
+      true
+    end
+
+    Gem.pre_uninstall do |uninstaller|
+      @pre_uninstall_hook_arg = uninstaller
+    end
+  end
+
+  def common_installer_teardown
+    Gem.post_build_hooks.clear
+    Gem.post_install_hooks.clear
+    Gem.done_installing_hooks.clear
+    Gem.post_reset_hooks.clear
+    Gem.post_uninstall_hooks.clear
+    Gem.pre_install_hooks.clear
+    Gem.pre_reset_hooks.clear
+    Gem.pre_uninstall_hooks.clear
+  end
+
+  ##
+  # A git_gem is used with a gem dependencies file.  The gem created here
+  # has no files, just a gem specification for the given +name+ and +version+.
+  #
+  # Yields the +specification+ to the block, if given
+
+  def git_gem name = 'a', version = 1
+    have_git?
+
+    directory = File.join 'git', name
+    directory = File.expand_path directory
+
+    git_spec = Gem::Specification.new name, version do |specification|
+      yield specification if block_given?
+    end
+
+    FileUtils.mkdir_p directory
+
+    gemspec = "#{name}.gemspec"
+
+    open File.join(directory, gemspec), 'w' do |io|
+      io.write git_spec.to_ruby
+    end
+
+    head = nil
+
+    Dir.chdir directory do
+      unless File.exist? '.git' then
+        system @git, 'init', '--quiet'
+        system @git, 'config', 'user.name',  'RubyGems Tests'
+        system @git, 'config', 'user.email', 'rubygems@example'
+      end
+
+      system @git, 'add', gemspec
+      system @git, 'commit', '-a', '-m', 'a non-empty commit message', '--quiet'
+      head = Gem::Util.popen('git', 'rev-parse', 'master').strip
+    end
+
+    return name, git_spec.version, directory, head
+  end
+
+  ##
+  # Skips this test unless you have a git executable
+
+  def have_git?
+    return if in_path? @git
+
+    skip 'cannot find git executable, use GIT environment variable to set'
+  end
+
+  def in_path? executable # :nodoc:
+    return true if %r%\A([A-Z]:|/)% =~ executable and File.exist? executable
+
+    ENV['PATH'].split(File::PATH_SEPARATOR).any? do |directory|
+      File.exist? File.join directory, executable
+    end
+  end
+
+  ##
+  # Builds and installs the Gem::Specification +spec+
+
+  def install_gem spec, options = {}
+    require 'rubygems/installer'
+
+    gem = File.join @tempdir, "gems", "#{spec.full_name}.gem"
+
+    unless File.exist? gem then
+      use_ui Gem::MockGemUi.new do
+        Dir.chdir @tempdir do
+          Gem::Package.build spec
+        end
+      end
+
+      gem = File.join(@tempdir, File.basename(spec.cache_file)).untaint
+    end
+
+    Gem::Installer.new(gem, options.merge({:wrappers => true})).install
+  end
+
+  ##
+  # Builds and installs the Gem::Specification +spec+ into the user dir
+
+  def install_gem_user spec
+    install_gem spec, :user_install => true
+  end
+
+  ##
+  # Uninstalls the Gem::Specification +spec+
+  def uninstall_gem spec
+    require 'rubygems/uninstaller'
+
+    Gem::Uninstaller.new(spec.name,
+                         :executables => true, :user_install => true).uninstall
+  end
+
+  ##
+  # creates a temporary directory with hax
+  # TODO: deprecate and remove
+
+  def create_tmpdir
+    tmpdir = nil
+    Dir.chdir Dir.tmpdir do tmpdir = Dir.pwd end # HACK OSX /private/tmp
+    tmpdir = File.join tmpdir, "test_rubygems_#{$$}"
+    FileUtils.mkdir_p tmpdir
+    return tmpdir
+  end
+
+  ##
+  # Enables pretty-print for all tests
+
+  def mu_pp(obj)
+    s = ''
+    s = PP.pp obj, s
+    s = s.force_encoding(Encoding.default_external) if defined? Encoding
+    s.chomp
+  end
+
+  ##
+  # Reads a Marshal file at +path+
+
+  def read_cache(path)
+    open path.dup.untaint, 'rb' do |io|
+      Marshal.load io.read
+    end
+  end
+
+  ##
+  # Reads a binary file at +path+
+
+  def read_binary(path)
+    Gem.read_binary path
+  end
+
+  ##
+  # Writes a binary file to +path+ which is relative to +@gemhome+
+
+  def write_file(path)
+    path = File.join @gemhome, path unless Pathname.new(path).absolute?
+    dir = File.dirname path
+    FileUtils.mkdir_p dir
+
+    open path, 'wb' do |io|
+      yield io if block_given?
+    end
+
+    path
+  end
+
+  def all_spec_names
+    Gem::Specification.map(&:full_name)
+  end
+
+  ##
+  # Creates a Gem::Specification with a minimum of extra work.  +name+ and
+  # +version+ are the gem's name and version,  platform, author, email,
+  # homepage, summary and description are defaulted.  The specification is
+  # yielded for customization.
+  #
+  # The gem is added to the installed gems in +@gemhome+ and the runtime.
+  #
+  # Use this with #write_file to build an installed gem.
+
+  def quick_gem(name, version='2')
+    require 'rubygems/specification'
+
+    spec = Gem::Specification.new do |s|
+      s.platform    = Gem::Platform::RUBY
+      s.name        = name
+      s.version     = version
+      s.author      = 'A User'
+      s.email       = 'example@example.com'
+      s.homepage    = 'http://example.com'
+      s.summary     = "this is a summary"
+      s.description = "This is a test description"
+
+      yield(s) if block_given?
+    end
+
+    Gem::Specification.map # HACK: force specs to (re-)load before we write
+
+    written_path = write_file spec.spec_file do |io|
+      io.write spec.to_ruby_for_cache
+    end
+
+    spec.loaded_from = spec.loaded_from = written_path
+
+    Gem::Specification.add_spec spec.for_cache
+
+    return spec
+  end
+
+  ##
+  # TODO:  remove in RubyGems 3.0
+
+  def quick_spec name, version = '2' # :nodoc:
+    util_spec name, version
+  end
+
+  ##
+  # Builds a gem from +spec+ and places it in <tt>File.join @gemhome,
+  # 'cache'</tt>.  Automatically creates files based on +spec.files+
+
+  def util_build_gem(spec)
+    dir = spec.gem_dir
+    FileUtils.mkdir_p dir
+
+    Dir.chdir dir do
+      spec.files.each do |file|
+        next if File.exist? file
+        FileUtils.mkdir_p File.dirname(file)
+        File.open file, 'w' do |fp| fp.puts "# #{file}" end
+      end
+
+      use_ui Gem::MockGemUi.new do
+        Gem::Package.build spec
+      end
+
+      cache = spec.cache_file
+      FileUtils.mv File.basename(cache), cache
+    end
+  end
+
+  def util_remove_gem(spec)
+    FileUtils.rm_rf spec.cache_file
+    FileUtils.rm_rf spec.spec_file
+  end
+
+  ##
+  # Removes all installed gems from +@gemhome+.
+
+  def util_clear_gems
+    FileUtils.rm_rf File.join(@gemhome, "gems") # TODO: use Gem::Dirs
+    FileUtils.mkdir File.join(@gemhome, "gems")
+    FileUtils.rm_rf File.join(@gemhome, "specifications")
+    FileUtils.mkdir File.join(@gemhome, "specifications")
+    Gem::Specification.reset
+  end
+
+  ##
+  # Install the provided specs
+
+  def install_specs(*specs)
+    Gem::Specification.add_specs(*specs)
+    Gem.searcher = nil
+  end
+
+  ##
+  # Installs the provided default specs including writing the spec file
+
+  def install_default_gems(*specs)
+    install_default_specs(*specs)
+
+    specs.each do |spec|
+      open spec.loaded_from, 'w' do |io|
+        io.write spec.to_ruby_for_cache
+      end
+    end
+  end
+
+  ##
+  # Install the provided default specs
+
+  def install_default_specs(*specs)
+    install_specs(*specs)
+    specs.each do |spec|
+      Gem.register_default_spec(spec)
+    end
+  end
+
+  def loaded_spec_names
+    Gem.loaded_specs.values.map(&:full_name).sort
+  end
+
+  def unresolved_names
+    Gem::Specification.unresolved_deps.values.map(&:to_s).sort
+  end
+
+  def save_loaded_features
+    old_loaded_features = $LOADED_FEATURES.dup
+    yield
+  ensure
+    $LOADED_FEATURES.replace old_loaded_features
+  end
+
+  ##
+  # new_spec is deprecated as it is never used.
+  #
+  # TODO:  remove in RubyGems 3.0
+
+  def new_spec name, version, deps = nil, *files # :nodoc:
+    require 'rubygems/specification'
+
+    spec = Gem::Specification.new do |s|
+      s.platform    = Gem::Platform::RUBY
+      s.name        = name
+      s.version     = version
+      s.author      = 'A User'
+      s.email       = 'example@example.com'
+      s.homepage    = 'http://example.com'
+      s.summary     = "this is a summary"
+      s.description = "This is a test description"
+
+      Array(deps).each do |n, req|
+        s.add_dependency n, (req || '>= 0')
+      end
+
+      s.files.push(*files) unless files.empty?
+
+      yield s if block_given?
+    end
+
+    spec.loaded_from = spec.spec_file
+
+    unless files.empty? then
+      write_file spec.spec_file do |io|
+        io.write spec.to_ruby_for_cache
+      end
+
+      util_build_gem spec
+
+      cache_file = File.join @tempdir, 'gems', "#{spec.full_name}.gem"
+      FileUtils.mkdir_p File.dirname cache_file
+      FileUtils.mv spec.cache_file, cache_file
+      FileUtils.rm spec.spec_file
+    end
+
+    spec
+  end
+
+  def new_default_spec(name, version, deps = nil, *files)
+    spec = util_spec name, version, deps
+
+    spec.loaded_from = File.join(@default_spec_dir, spec.spec_name)
+    spec.files = files
+
+    lib_dir = File.join(@tempdir, "default_gems", "lib")
+    $LOAD_PATH.unshift(lib_dir)
+    files.each do |file|
+      rb_path = File.join(lib_dir, file)
+      FileUtils.mkdir_p(File.dirname(rb_path))
+      File.open(rb_path, "w") do |rb|
+        rb << "# #{file}"
+      end
+    end
+
+    spec
+  end
+
+  ##
+  # Creates a spec with +name+, +version+.  +deps+ can specify the dependency
+  # or a +block+ can be given for full customization of the specification.
+
+  def util_spec name, version = 2, deps = nil # :yields: specification
+    raise "deps or block, not both" if deps and block_given?
+
+    spec = Gem::Specification.new do |s|
+      s.platform    = Gem::Platform::RUBY
+      s.name        = name
+      s.version     = version
+      s.author      = 'A User'
+      s.email       = 'example@example.com'
+      s.homepage    = 'http://example.com'
+      s.summary     = "this is a summary"
+      s.description = "This is a test description"
+
+      yield s if block_given?
+    end
+
+    if deps then
+      # Since Hash#each is unordered in 1.8, sort the keys and iterate that
+      # way so the tests are deterministic on all implementations.
+      deps.keys.sort.each do |n|
+        spec.add_dependency n, (deps[n] || '>= 0')
+      end
+    end
+
+    spec.loaded_from = spec.spec_file
+
+    Gem::Specification.add_spec spec
+
+    return spec
+  end
+
+  ##
+  # Creates a gem with +name+, +version+ and +deps+.  The specification will
+  # be yielded before gem creation for customization.  The gem will be placed
+  # in <tt>File.join @tempdir, 'gems'</tt>.  The specification and .gem file
+  # location are returned.
+
+  def util_gem(name, version, deps = nil, &block)
+    # TODO: deprecate
+    raise "deps or block, not both" if deps and block
+
+    if deps then
+      block = proc do |s|
+        # Since Hash#each is unordered in 1.8, sort
+        # the keys and iterate that way so the tests are
+        # deterministic on all implementations.
+        deps.keys.sort.each do |n|
+          s.add_dependency n, (deps[n] || '>= 0')
+        end
+      end
+    end
+
+    spec = quick_gem(name, version, &block)
+
+    util_build_gem spec
+
+    cache_file = File.join @tempdir, 'gems', "#{spec.original_name}.gem"
+    FileUtils.mkdir_p File.dirname cache_file
+    FileUtils.mv spec.cache_file, cache_file
+    FileUtils.rm spec.spec_file
+
+    spec.loaded_from = nil
+
+    [spec, cache_file]
+  end
+
+  ##
+  # Gzips +data+.
+
+  def util_gzip(data)
+    out = StringIO.new
+
+    Zlib::GzipWriter.wrap out do |io|
+      io.write data
+    end
+
+    out.string
+  end
+
+  ##
+  # Creates several default gems which all have a lib/code.rb file.  The gems
+  # are not installed but are available in the cache dir.
+  #
+  # +@a1+:: gem a version 1, this is the best-described gem.
+  # +@a2+:: gem a version 2
+  # +@a3a:: gem a version 3.a
+  # +@a_evil9+:: gem a_evil version 9, use this to ensure similarly-named gems
+  #              don't collide with a.
+  # +@b2+:: gem b version 2
+  # +@c1_2+:: gem c version 1.2
+  # +@pl1+:: gem pl version 1, this gem has a legacy platform of i386-linux.
+  #
+  # Additional +prerelease+ gems may also be created:
+  #
+  # +@a2_pre+:: gem a version 2.a
+  # TODO: nuke this and fix tests. this should speed up a lot
+
+  def util_make_gems(prerelease = false)
+    @a1 = quick_gem 'a', '1' do |s|
+      s.files = %w[lib/code.rb]
+      s.require_paths = %w[lib]
+      s.date = Gem::Specification::TODAY - 86400
+      s.homepage = 'http://a.example.com'
+      s.email = %w[example@example.com example2@example.com]
+      s.authors = %w[Example Example2]
+      s.description = <<-DESC
+This line is really, really long.  So long, in fact, that it is more than eighty characters long!  The purpose of this line is for testing wrapping behavior because sometimes people don't wrap their text to eighty characters.  Without the wrapping, the text might not look good in the RSS feed.
+
+Also, a list:
+  * An entry that\'s actually kind of sort
+  * an entry that\'s really long, which will probably get wrapped funny.  That's ok, somebody wasn't thinking straight when they made it more than eighty characters.
+      DESC
+    end
+
+    init = proc do |s|
+      s.files = %w[lib/code.rb]
+      s.require_paths = %w[lib]
+    end
+
+    @a2      = quick_gem('a', '2',      &init)
+    @a3a     = quick_gem('a', '3.a',    &init)
+    @a_evil9 = quick_gem('a_evil', '9', &init)
+    @b2      = quick_gem('b', '2',      &init)
+    @c1_2    = quick_gem('c', '1.2',    &init)
+    @x       = quick_gem('x', '1',      &init)
+    @dep_x   = quick_gem('dep_x', '1') do |s|
+      s.files = %w[lib/code.rb]
+      s.require_paths = %w[lib]
+      s.add_dependency 'x', '>= 1'
+    end
+
+    @pl1     = quick_gem 'pl', '1' do |s| # l for legacy
+      s.files = %w[lib/code.rb]
+      s.require_paths = %w[lib]
+      s.platform = Gem::Platform.new 'i386-linux'
+      s.instance_variable_set :@original_platform, 'i386-linux'
+    end
+
+    if prerelease
+      @a2_pre = quick_gem('a', '2.a', &init)
+      write_file File.join(*%W[gems #{@a2_pre.original_name} lib code.rb])
+      util_build_gem @a2_pre
+    end
+
+    write_file File.join(*%W[gems #{@a1.original_name}      lib code.rb])
+    write_file File.join(*%W[gems #{@a2.original_name}      lib code.rb])
+    write_file File.join(*%W[gems #{@a3a.original_name}     lib code.rb])
+    write_file File.join(*%W[gems #{@a_evil9.original_name} lib code.rb])
+    write_file File.join(*%W[gems #{@b2.original_name}      lib code.rb])
+    write_file File.join(*%W[gems #{@c1_2.original_name}    lib code.rb])
+    write_file File.join(*%W[gems #{@pl1.original_name}     lib code.rb])
+    write_file File.join(*%W[gems #{@x.original_name}       lib code.rb])
+    write_file File.join(*%W[gems #{@dep_x.original_name}   lib code.rb])
+
+    [@a1, @a2, @a3a, @a_evil9, @b2, @c1_2, @pl1, @x, @dep_x].each do |spec|
+      util_build_gem spec
+    end
+
+    FileUtils.rm_r File.join(@gemhome, "gems", @pl1.original_name)
+  end
+
+  ##
+  # Set the platform to +arch+
+
+  def util_set_arch(arch)
+    RbConfig::CONFIG['arch'] = arch
+    platform = Gem::Platform.new arch
+
+    Gem.instance_variable_set :@platforms, nil
+    Gem::Platform.instance_variable_set :@local, nil
+
+    platform
+  end
+
+  ##
+  # Sets up a fake fetcher using the gems from #util_make_gems.  Optionally
+  # additional +prerelease+ gems may be included.
+  #
+  # Gems created by this method may be fetched using Gem::RemoteFetcher.
+
+  def util_setup_fake_fetcher(prerelease = false)
+    require 'zlib'
+    require 'socket'
+    require 'rubygems/remote_fetcher'
+
+    @fetcher = Gem::FakeFetcher.new
+
+    util_make_gems(prerelease)
+    Gem::Specification.reset
+
+    @all_gems = [@a1, @a2, @a3a, @a_evil9, @b2, @c1_2].sort
+    @all_gem_names = @all_gems.map { |gem| gem.full_name }
+
+    gem_names = [@a1.full_name, @a2.full_name, @a3a.full_name, @b2.full_name]
+    @gem_names = gem_names.sort.join("\n")
+
+    Gem::RemoteFetcher.fetcher = @fetcher
+  end
+
+  ##
+  # Add +spec+ to +@fetcher+ serving the data in the file +path+.
+  # +repo+ indicates which repo to make +spec+ appear to be in.
+
+  def add_to_fetcher(spec, path=nil, repo=@gem_repo)
+    path ||= spec.cache_file
+    @fetcher.data["#{@gem_repo}gems/#{spec.file_name}"] = read_binary(path)
+  end
+
+  ##
+  # Sets up Gem::SpecFetcher to return information from the gems in +specs+.
+  # Best used with +@all_gems+ from #util_setup_fake_fetcher.
+
+  def util_setup_spec_fetcher(*specs)
+    specs -= Gem::Specification._all
+    Gem::Specification.add_specs(*specs)
+
+    spec_fetcher = Gem::SpecFetcher.fetcher
+
+    prerelease, all = Gem::Specification.partition { |spec|
+      spec.version.prerelease?
+    }
+
+    spec_fetcher.specs[@uri] = []
+    all.each do |spec|
+      spec_fetcher.specs[@uri] << spec.name_tuple
+    end
+
+    spec_fetcher.latest_specs[@uri] = []
+    Gem::Specification.latest_specs.each do |spec|
+      spec_fetcher.latest_specs[@uri] << spec.name_tuple
+    end
+
+    spec_fetcher.prerelease_specs[@uri] = []
+    prerelease.each do |spec|
+      spec_fetcher.prerelease_specs[@uri] << spec.name_tuple
+    end
+
+    # HACK for test_download_to_cache
+    unless Gem::RemoteFetcher === @fetcher then
+      v = Gem.marshal_version
+
+      specs = all.map { |spec| spec.name_tuple }
+      s_zip = util_gzip Marshal.dump Gem::NameTuple.to_basic specs
+
+      latest_specs = Gem::Specification.latest_specs.map do |spec|
+        spec.name_tuple
+      end
+
+      l_zip = util_gzip Marshal.dump Gem::NameTuple.to_basic latest_specs
+
+      prerelease_specs = prerelease.map { |spec| spec.name_tuple }
+      p_zip = util_gzip Marshal.dump Gem::NameTuple.to_basic prerelease_specs
+
+      @fetcher.data["#{@gem_repo}specs.#{v}.gz"]            = s_zip
+      @fetcher.data["#{@gem_repo}latest_specs.#{v}.gz"]     = l_zip
+      @fetcher.data["#{@gem_repo}prerelease_specs.#{v}.gz"] = p_zip
+
+      v = Gem.marshal_version
+
+      Gem::Specification.each do |spec|
+        path = "#{@gem_repo}quick/Marshal.#{v}/#{spec.original_name}.gemspec.rz"
+        data = Marshal.dump spec
+        data_deflate = Zlib::Deflate.deflate data
+        @fetcher.data[path] = data_deflate
+      end
+    end
+
+    nil # force errors
+  end
+
+  ##
+  # Deflates +data+
+
+  def util_zip(data)
+    Zlib::Deflate.deflate data
+  end
+
+  def util_set_RUBY_VERSION(version, patchlevel = nil, revision = nil)
+    if Gem.instance_variables.include? :@ruby_version or
+       Gem.instance_variables.include? '@ruby_version' then
+      Gem.send :remove_instance_variable, :@ruby_version
+    end
+
+    @RUBY_VERSION    = RUBY_VERSION
+    @RUBY_PATCHLEVEL = RUBY_PATCHLEVEL if defined?(RUBY_PATCHLEVEL)
+    @RUBY_REVISION   = RUBY_REVISION   if defined?(RUBY_REVISION)
+
+    Object.send :remove_const, :RUBY_VERSION
+    Object.send :remove_const, :RUBY_PATCHLEVEL if defined?(RUBY_PATCHLEVEL)
+    Object.send :remove_const, :RUBY_REVISION   if defined?(RUBY_REVISION)
+
+    Object.const_set :RUBY_VERSION,    version
+    Object.const_set :RUBY_PATCHLEVEL, patchlevel if patchlevel
+    Object.const_set :RUBY_REVISION,   revision   if revision
+  end
+
+  def util_restore_RUBY_VERSION
+    Object.send :remove_const, :RUBY_VERSION
+    Object.send :remove_const, :RUBY_PATCHLEVEL if defined?(RUBY_PATCHLEVEL)
+    Object.send :remove_const, :RUBY_REVISION   if defined?(RUBY_REVISION)
+
+    Object.const_set :RUBY_VERSION,    @RUBY_VERSION
+    Object.const_set :RUBY_PATCHLEVEL, @RUBY_PATCHLEVEL if
+      defined?(@RUBY_PATCHLEVEL)
+    Object.const_set :RUBY_REVISION,   @RUBY_REVISION   if
+      defined?(@RUBY_REVISION)
+  end
+
+  ##
+  # Is this test being run on a Windows platform?
+
+  def self.win_platform?
+    Gem.win_platform?
+  end
+
+  ##
+  # Is this test being run on a Windows platform?
+
+  def win_platform?
+    Gem.win_platform?
+  end
+
+  ##
+  # Returns whether or not we're on a version of Ruby built with VC++ (or
+  # Borland) versus Cygwin, Mingw, etc.
+
+  def self.vc_windows?
+    RUBY_PLATFORM.match('mswin')
+  end
+
+  ##
+  # Returns whether or not we're on a version of Ruby built with VC++ (or
+  # Borland) versus Cygwin, Mingw, etc.
+
+  def vc_windows?
+    RUBY_PLATFORM.match('mswin')
+  end
+
+  ##
+  # Returns the make command for the current platform. For versions of Ruby
+  # built on MS Windows with VC++ or Borland it will return 'nmake'. On all
+  # other platforms, including Cygwin, it will return 'make'.
+
+  def self.make_command
+    ENV["make"] || (vc_windows? ? 'nmake' : 'make')
+  end
+
+  ##
+  # Returns the make command for the current platform. For versions of Ruby
+  # built on MS Windows with VC++ or Borland it will return 'nmake'. On all
+  # other platforms, including Cygwin, it will return 'make'.
+
+  def make_command
+    ENV["make"] || (vc_windows? ? 'nmake' : 'make')
+  end
+
+  ##
+  # Returns whether or not the nmake command could be found.
+
+  def nmake_found?
+    system('nmake /? 1>NUL 2>&1')
+  end
+
+  # In case we're building docs in a background process, this method waits for
+  # that process to exit (or if it's already been reaped, or never happened,
+  # swallows the Errno::ECHILD error).
+  def wait_for_child_process_to_exit
+    Process.wait if Process.respond_to?(:fork)
+  rescue Errno::ECHILD
+  end
+
+  ##
+  # Allows tests to use a random (but controlled) port number instead of
+  # a hardcoded one. This helps CI tools when running parallels builds on
+  # the same builder slave.
+
+  def self.process_based_port
+    @@process_based_port ||= 8000 + $$ % 1000
+  end
+
+  ##
+  # See ::process_based_port
+
+  def process_based_port
+    self.class.process_based_port
+  end
+
+  ##
+  # Allows the proper version of +rake+ to be used for the test.
+
+  def build_rake_in(good=true)
+    gem_ruby = Gem.ruby
+    Gem.ruby = @@ruby
+    env_rake = ENV["rake"]
+    rake = (good ? @@good_rake : @@bad_rake)
+    ENV["rake"] = rake
+    yield rake
+  ensure
+    Gem.ruby = gem_ruby
+    if env_rake
+      ENV["rake"] = env_rake
+    else
+      ENV.delete("rake")
+    end
+  end
+
+  ##
+  # Finds the path to the Ruby executable
+
+  def self.rubybin
+    ruby = ENV["RUBY"]
+    return ruby if ruby
+    ruby = "ruby"
+    rubyexe = "#{ruby}.exe"
+
+    3.times do
+      if File.exist? ruby and File.executable? ruby and !File.directory? ruby
+        return File.expand_path(ruby)
+      end
+      if File.exist? rubyexe and File.executable? rubyexe
+        return File.expand_path(rubyexe)
+      end
+      ruby = File.join("..", ruby)
+    end
+
+    begin
+      require "rbconfig"
+      File.join(RbConfig::CONFIG["bindir"],
+                RbConfig::CONFIG["ruby_install_name"] +
+                RbConfig::CONFIG["EXEEXT"])
+    rescue LoadError
+      "ruby"
+    end
+  end
+
+  @@ruby = rubybin
+  @@good_rake = "#{rubybin} #{File.expand_path('../../../test/rubygems/good_rake.rb', __FILE__)}"
+  @@bad_rake = "#{rubybin} #{File.expand_path('../../../test/rubygems/bad_rake.rb', __FILE__)}"
+
+  ##
+  # Construct a new Gem::Dependency.
+
+  def dep name, *requirements
+    Gem::Dependency.new name, *requirements
+  end
+
+  ##
+  # Constructs a Gem::Resolver::DependencyRequest from a
+  # Gem::Dependency +dep+, a +from_name+ and +from_version+ requesting the
+  # dependency and a +parent+ DependencyRequest
+
+  def dependency_request dep, from_name, from_version, parent = nil
+    remote = Gem::Source.new @uri
+
+    unless parent then
+      parent_dep = dep from_name, from_version
+      parent = Gem::Resolver::DependencyRequest.new parent_dep, nil
+    end
+
+    spec = Gem::Resolver::IndexSpecification.new \
+      nil, from_name, from_version, remote, Gem::Platform::RUBY
+    activation = Gem::Resolver::ActivationRequest.new spec, parent
+
+    Gem::Resolver::DependencyRequest.new dep, activation
+  end
+
+  ##
+  # Constructs a new Gem::Requirement.
+
+  def req *requirements
+    return requirements.first if Gem::Requirement === requirements.first
+    Gem::Requirement.create requirements
+  end
+
+  ##
+  # Constructs a new Gem::Specification.
+
+  def spec name, version, &block
+    Gem::Specification.new name, v(version), &block
+  end
+
+  ##
+  # Creates a SpecFetcher pre-filled with the gems or specs defined in the
+  # block.
+  #
+  # Yields a +fetcher+ object that responds to +spec+ and +gem+.  +spec+ adds
+  # a specification to the SpecFetcher while +gem+ adds both a specification
+  # and the gem data to the RemoteFetcher so the built gem can be downloaded.
+  #
+  # If only the a-3 gem is supposed to be downloaded you can save setup
+  # time by creating only specs for the other versions:
+  #
+  #   spec_fetcher do |fetcher|
+  #     fetcher.spec 'a', 1
+  #     fetcher.spec 'a', 2, 'b' => 3 # dependency on b = 3
+  #     fetcher.gem 'a', 3 do |spec|
+  #       # spec is a Gem::Specification
+  #       # ...
+  #     end
+  #   end
+
+  def spec_fetcher repository = @gem_repo
+    Gem::TestCase::SpecFetcherSetup.declare self, repository do |spec_fetcher_setup|
+      yield spec_fetcher_setup if block_given?
+    end
+  end
+
+  ##
+  # Construct a new Gem::Version.
+
+  def v string
+    Gem::Version.create string
+  end
+
+  ##
+  # A vendor_gem is used with a gem dependencies file.  The gem created here
+  # has no files, just a gem specification for the given +name+ and +version+.
+  #
+  # Yields the +specification+ to the block, if given
+
+  def vendor_gem name = 'a', version = 1
+    directory = File.join 'vendor', name
+
+    vendor_spec = Gem::Specification.new name, version do |specification|
+      yield specification if block_given?
+    end
+
+    FileUtils.mkdir_p directory
+
+    open File.join(directory, "#{name}.gemspec"), 'w' do |io|
+      io.write vendor_spec.to_ruby
+    end
+
+    return name, vendor_spec.version, directory
+  end
+
+  ##
+  # The StaticSet is a static set of gem specifications used for testing only.
+  # It is available by requiring Gem::TestCase.
+
+  class StaticSet < Gem::Resolver::Set
+
+    ##
+    # A StaticSet ignores remote because it has a fixed set of gems.
+
+    attr_accessor :remote
+
+    ##
+    # Creates a new StaticSet for the given +specs+
+
+    def initialize(specs)
+      super()
+
+      @specs = specs
+
+      @remote = true
+    end
+
+    ##
+    # Adds +spec+ to this set.
+
+    def add spec
+      @specs << spec
+    end
+
+    ##
+    # Finds +dep+ in this set.
+
+    def find_spec(dep)
+      @specs.reverse_each do |s|
+        return s if dep.matches_spec? s
+      end
+    end
+
+    ##
+    # Finds all gems matching +dep+ in this set.
+
+    def find_all(dep)
+      @specs.find_all { |s| dep.match? s, @prerelease }
+    end
+
+    ##
+    # Loads a Gem::Specification from this set which has the given +name+,
+    # version +ver+, +platform+.  The +source+ is ignored.
+
+    def load_spec name, ver, platform, source
+      dep = Gem::Dependency.new name, ver
+      spec = find_spec dep
+
+      Gem::Specification.new spec.name, spec.version do |s|
+        s.platform = spec.platform
+      end
+    end
+
+    def prefetch reqs # :nodoc:
+    end
+  end
+
+  ##
+  # Loads certificate named +cert_name+ from <tt>test/rubygems/</tt>.
+
+  def self.load_cert cert_name
+    cert_file = cert_path cert_name
+
+    cert = File.read cert_file
+
+    OpenSSL::X509::Certificate.new cert
+  end
+
+  ##
+  # Returns the path to the certificate named +cert_name+ from
+  # <tt>test/rubygems/</tt>.
+
+  def self.cert_path cert_name
+    if 32 == (Time.at(2**32) rescue 32) then
+      cert_file =
+        File.expand_path "../../../test/rubygems/#{cert_name}_cert_32.pem",
+                         __FILE__
+
+      return cert_file if File.exist? cert_file
+    end
+
+    File.expand_path "../../../test/rubygems/#{cert_name}_cert.pem", __FILE__
+  end
+
+  ##
+  # Loads an RSA private key named +key_name+ with +passphrase+ in <tt>test/rubygems/</tt>
+
+  def self.load_key key_name, passphrase = nil
+    key_file = key_path key_name
+
+    key = File.read key_file
+
+    OpenSSL::PKey::RSA.new key, passphrase
+  end
+
+  ##
+  # Returns the path to the key named +key_name+ from <tt>test/rubygems</tt>
+
+  def self.key_path key_name
+    File.expand_path "../../../test/rubygems/#{key_name}_key.pem", __FILE__
+  end
+
+  # :stopdoc:
+  # only available in RubyGems tests
+
+  PRIVATE_KEY_PASSPHRASE      = 'Foo bar'
+
+  begin
+    PRIVATE_KEY                 = load_key 'private'
+    PRIVATE_KEY_PATH            = key_path 'private'
+
+    # ENCRYPTED_PRIVATE_KEY is PRIVATE_KEY encrypted with PRIVATE_KEY_PASSPHRASE
+    ENCRYPTED_PRIVATE_KEY       = load_key 'encrypted_private', PRIVATE_KEY_PASSPHRASE
+    ENCRYPTED_PRIVATE_KEY_PATH  = key_path 'encrypted_private'
+
+    PUBLIC_KEY                  = PRIVATE_KEY.public_key
+
+    PUBLIC_CERT                 = load_cert 'public'
+    PUBLIC_CERT_PATH            = cert_path 'public'
+  rescue Errno::ENOENT
+    PRIVATE_KEY = nil
+    PUBLIC_KEY  = nil
+    PUBLIC_CERT = nil
+  end if defined?(OpenSSL::SSL)
+
+end
+
+require 'rubygems/test_utilities'
+