#--
# Copyright 2006 by Chad Fowler, Rich Kilmer, Jim Weirich and others.
# All rights reserved.
# See LICENSE.txt for permissions.
#++

require File.join(File.expand_path(File.dirname(__FILE__)), 'gemutilities')
require 'rubygems/source_index'
require 'rubygems/config_file'

class Gem::SourceIndex
  public :fetcher, :fetch_bulk_index, :fetch_quick_index,
         :find_missing, :gems, :remove_extra,
         :update_with_missing, :unzip
end

class TestGemSourceIndex < RubyGemTestCase

  def setup
    super

    util_setup_fake_fetcher
  end

  def test_self_from_gems_in
    spec_dir = File.join @gemhome, 'specifications'

    FileUtils.rm_r spec_dir

    FileUtils.mkdir_p spec_dir

    a1 = quick_gem 'a', '1' do |spec| spec.author = 'author 1' end

    spec_file = File.join spec_dir, "#{a1.full_name}.gemspec"

    File.open spec_file, 'w' do |fp|
      fp.write a1.to_ruby
    end

    si = Gem::SourceIndex.from_gems_in spec_dir

    assert_equal [spec_dir], si.spec_dirs
    assert_equal [a1.full_name], si.gems.keys
  end

  def test_self_load_specification
    spec_dir = File.join @gemhome, 'specifications'

    FileUtils.rm_r spec_dir

    FileUtils.mkdir_p spec_dir

    a1 = quick_gem 'a', '1' do |spec| spec.author = 'author 1' end

    spec_file = File.join spec_dir, "#{a1.full_name}.gemspec"

    File.open spec_file, 'w' do |fp|
      fp.write a1.to_ruby
    end

    spec = Gem::SourceIndex.load_specification spec_file

    assert_equal a1.author, spec.author
  end

  def test_self_load_specification_utf_8
    spec_dir = File.join @gemhome, 'specifications'

    FileUtils.rm_r spec_dir

    FileUtils.mkdir_p spec_dir

    spec_file = File.join spec_dir, "utf-8.gemspec"
    spec_data = <<-SPEC
Gem::Specification.new do |s|
  s.name = %q{utf}
  s.version = "8"

  s.required_rubygems_version = Gem::Requirement.new(">= 0")
  s.authors = ["\317\200"]
  s.date = %q{2008-09-10}
  s.description = %q{This is a test description}
  s.email = %q{example@example.com}
  s.has_rdoc = true
  s.homepage = %q{http://example.com}
  s.require_paths = ["lib"]
  s.rubygems_version = %q{1.2.0}
  s.summary = %q{this is a summary}

  if s.respond_to? :specification_version then
    current_version = Gem::Specification::CURRENT_SPECIFICATION_VERSION
    s.specification_version = 2

    if Gem::Version.new(Gem::RubyGemsVersion) >= Gem::Version.new('1.2.0') then
    else
    end
  else
  end
end
    SPEC

    spec_data.force_encoding 'UTF-8'

    File.open spec_file, 'w' do |io| io.write spec_data end

    spec = Gem::SourceIndex.load_specification spec_file

    pi = "\317\200"
    pi.force_encoding 'UTF-8' if pi.respond_to? :force_encoding

    assert_equal pi, spec.author
  end if Gem.ruby_version > Gem::Version.new('1.9')

  def test_self_load_specification_exception
    spec_dir = File.join @gemhome, 'specifications'

    FileUtils.mkdir_p spec_dir

    spec_file = File.join spec_dir, 'a-1.gemspec'

    File.open spec_file, 'w' do |fp|
      fp.write 'raise Exception, "epic fail"'
    end

    use_ui @ui do
      assert_equal nil, Gem::SourceIndex.load_specification(spec_file)
    end

    assert_equal '', @ui.output

    expected = <<-EOF
WARNING:  #<Exception: epic fail>
raise Exception, "epic fail"
WARNING:  Invalid .gemspec format in '#{spec_file}'
    EOF

    assert_equal expected, @ui.error
  end

  def test_self_load_specification_interrupt
    spec_dir = File.join @gemhome, 'specifications'

    FileUtils.mkdir_p spec_dir

    spec_file = File.join spec_dir, 'a-1.gemspec'

    File.open spec_file, 'w' do |fp|
      fp.write 'raise Interrupt, "^C"'
    end

    use_ui @ui do
      assert_raises Interrupt do
        Gem::SourceIndex.load_specification(spec_file)
      end
    end

    assert_equal '', @ui.output
    assert_equal '', @ui.error
  end

  def test_self_load_specification_syntax_error
    spec_dir = File.join @gemhome, 'specifications'

    FileUtils.mkdir_p spec_dir

    spec_file = File.join spec_dir, 'a-1.gemspec'

    File.open spec_file, 'w' do |fp|
      fp.write '1 +'
    end

    use_ui @ui do
      assert_equal nil, Gem::SourceIndex.load_specification(spec_file)
    end

    assert_equal '', @ui.output

    assert_match(/syntax error/, @ui.error)
    assert_match(/1 \+/, @ui.error)
  end

  def test_self_load_specification_system_exit
    spec_dir = File.join @gemhome, 'specifications'

    FileUtils.mkdir_p spec_dir

    spec_file = File.join spec_dir, 'a-1.gemspec'

    File.open spec_file, 'w' do |fp|
      fp.write 'raise SystemExit, "bye-bye"'
    end

    use_ui @ui do
      assert_raises SystemExit do
        Gem::SourceIndex.load_specification(spec_file)
      end
    end

    assert_equal '', @ui.output
    assert_equal '', @ui.error
  end

  def test_create_from_directory
    # TODO
  end

  def test_fetcher
    assert_equal @fetcher, @source_index.fetcher
  end

  def test_fetch_bulk_index_compressed
    util_setup_bulk_fetch true

    use_ui @ui do
      fetched_index = @source_index.fetch_bulk_index @uri
      assert_equal [@a1.full_name, @a2.full_name, @a_evil9.full_name,
                    @c1_2.full_name].sort,
                   fetched_index.gems.map { |n,s| n }.sort
    end

    paths = @fetcher.paths

    assert_equal "#{@gem_repo}Marshal.#{@marshal_version}.Z", paths.shift

    assert_empty paths, paths.join(', ')
  end

  def test_fetch_bulk_index_error
    @fetcher.data["#{@gem_repo}Marshal.#{@marshal_version}.Z"] = proc { raise SocketError }
    @fetcher.data["#{@gem_repo}Marshal.#{@marshal_version}"] = proc { raise SocketError }
    @fetcher.data["#{@gem_repo}yaml.Z"] = proc { raise SocketError }
    @fetcher.data["#{@gem_repo}yaml"] = proc { raise SocketError }

    e = assert_raises Gem::RemoteSourceException do
      use_ui @ui do
        @source_index.fetch_bulk_index @uri
      end
    end

    paths = @fetcher.paths

    assert_equal "#{@gem_repo}Marshal.#{@marshal_version}.Z", paths.shift
    assert_equal "#{@gem_repo}Marshal.#{@marshal_version}", paths.shift
    assert_equal "#{@gem_repo}yaml.Z", paths.shift
    assert_equal "#{@gem_repo}yaml", paths.shift

    assert_empty paths, paths.join(', ')

    assert_equal 'Error fetching remote gem cache: SocketError',
                 e.message
  end

  def test_fetch_bulk_index_fallback
    @fetcher.data["#{@gem_repo}Marshal.#{@marshal_version}.Z"] =
      proc { raise SocketError }
    @fetcher.data["#{@gem_repo}Marshal.#{@marshal_version}"] =
      proc { raise SocketError }
    @fetcher.data["#{@gem_repo}yaml.Z"] = proc { raise SocketError }
    @fetcher.data["#{@gem_repo}yaml"] = @source_index.to_yaml

    use_ui @ui do
      fetched_index = @source_index.fetch_bulk_index @uri
      assert_equal [@a1.full_name, @a2.full_name, @a_evil9.full_name,
                    @c1_2.full_name].sort,
                   fetched_index.gems.map { |n,s| n }.sort
    end

    paths = @fetcher.paths

    assert_equal "#{@gem_repo}Marshal.#{@marshal_version}.Z", paths.shift
    assert_equal "#{@gem_repo}Marshal.#{@marshal_version}", paths.shift
    assert_equal "#{@gem_repo}yaml.Z", paths.shift
    assert_equal "#{@gem_repo}yaml", paths.shift

    assert_empty paths, paths.join(', ')
  end

  def test_fetch_bulk_index_marshal_mismatch
    marshal = @source_index.dump
    marshal[0] = (Marshal::MAJOR_VERSION - 1).chr

    @fetcher.data["#{@gem_repo}Marshal.#{@marshal_version}"] = marshal
    @fetcher.data["#{@gem_repo}yaml"] = @source_index.to_yaml

    use_ui @ui do
      fetched_index = @source_index.fetch_bulk_index @uri
      assert_equal [@a1.full_name, @a2.full_name, @a_evil9.full_name,
                    @c1_2.full_name].sort,
                   fetched_index.gems.map { |n,s| n }.sort
    end

    paths = @fetcher.paths

    assert_equal "#{@gem_repo}Marshal.#{@marshal_version}.Z", paths.shift
    assert_equal "#{@gem_repo}Marshal.#{@marshal_version}", paths.shift
    assert_equal "#{@gem_repo}yaml.Z", paths.shift
    assert_equal "#{@gem_repo}yaml", paths.shift

    assert_empty paths, paths.join(', ')
  end

  def test_fetch_bulk_index_uncompressed
    util_setup_bulk_fetch false
    use_ui @ui do
      fetched_index = @source_index.fetch_bulk_index @uri
      assert_equal [@a1.full_name, @a2.full_name, @a_evil9.full_name,
                    @c1_2.full_name].sort,
                   fetched_index.gems.map { |n,s| n }.sort
    end

    paths = @fetcher.paths

    assert_equal "#{@gem_repo}Marshal.#{@marshal_version}.Z", paths.shift
    assert_equal "#{@gem_repo}Marshal.#{@marshal_version}", paths.shift

    assert_empty paths, paths.join(', ')
  end

  def test_fetch_quick_index
    index = util_zip @gem_names
    latest_index = util_zip [@a2.full_name, @b2.full_name].join("\n")

    @fetcher.data["#{@gem_repo}quick/index.rz"] = index
    @fetcher.data["#{@gem_repo}quick/latest_index.rz"] = latest_index

    quick_index = @source_index.fetch_quick_index @uri, false
    assert_equal [@a2.full_name, @b2.full_name].sort,
                 quick_index.sort

    paths = @fetcher.paths

    assert_equal "#{@gem_repo}quick/latest_index.rz", paths.shift

    assert_empty paths, paths.join(', ')
  end

  def test_fetch_quick_index_all
    index = util_zip @gem_names
    latest_index = util_zip [@a2.full_name, @b2.full_name].join("\n")

    @fetcher.data["#{@gem_repo}quick/index.rz"] = index
    @fetcher.data["#{@gem_repo}quick/latest_index.rz"] = latest_index

    quick_index = @source_index.fetch_quick_index @uri, true
    assert_equal [@a1.full_name, @a2.full_name, @b2.full_name].sort,
                 quick_index.sort

    paths = @fetcher.paths

    assert_equal "#{@gem_repo}quick/index.rz", paths.shift

    assert_empty paths, paths.join(', ')
  end

  def test_fetch_quick_index_error
    @fetcher.data["#{@gem_repo}quick/index.rz"] =
      proc { raise Exception }

    e = assert_raises Gem::OperationNotSupportedError do
      @source_index.fetch_quick_index @uri, true
    end

    assert_equal 'No quick index found: Exception', e.message

    paths = @fetcher.paths

    assert_equal "#{@gem_repo}quick/index.rz", paths.shift

    assert_empty paths, paths.join(', ')
  end

  def test_fetch_quick_index_fallback
    index = util_zip @gem_names

    @fetcher.data["#{@gem_repo}quick/index.rz"] = index

    quick_index = @source_index.fetch_quick_index @uri, false
    assert_equal @gem_names.split, quick_index.sort

    paths = @fetcher.paths

    assert_equal "#{@gem_repo}quick/latest_index.rz", paths.shift
    assert_equal "#{@gem_repo}quick/index.rz", paths.shift

    assert_empty paths, paths.join(', ')
  end

  def test_fetch_quick_index_subdir
    latest_index = util_zip [@a2.full_name, @b2.full_name].join("\n")
    repo = URI.parse "#{@gem_repo}~nobody/mirror/"

    @fetcher.data["#{repo}quick/latest_index.rz"] = latest_index

    quick_index = @source_index.fetch_quick_index repo, false
    assert_equal [@a2.full_name, @b2.full_name].sort,
                 quick_index.sort

    paths = @fetcher.paths

    assert_equal "#{repo}quick/latest_index.rz", paths.shift

    assert_empty paths, paths.join(', ')
  end

  def test_fetch_single_spec
    a1_spec_url = "#{@gem_repo}quick/Marshal.#{Gem.marshal_version}/#{@a1.full_name}.gemspec.rz"
    @fetcher.data[a1_spec_url] = util_zip Marshal.dump(@a1)

    spec = @source_index.send :fetch_single_spec, URI.parse(@gem_repo),
                              @a1.full_name

    assert_equal @a1.full_name, spec.full_name

    paths = @fetcher.paths

    assert_equal a1_spec_url, paths.shift

    assert_empty paths, paths.join(', ')
  end

  def test_fetch_single_spec_subdir
    repo = URI.parse "#{@gem_repo}~nobody/mirror/"

    a1_spec_url = "#{repo}quick/Marshal.#{Gem.marshal_version}/#{@a1.full_name}.gemspec.rz"
    @fetcher.data[a1_spec_url] = util_zip Marshal.dump(@a1)

    spec = @source_index.send :fetch_single_spec, repo, @a1.full_name

    assert_equal @a1.full_name, spec.full_name

    paths = @fetcher.paths

    assert_equal a1_spec_url, paths.shift

    assert_empty paths, paths.join(', ')
  end

  def test_fetch_single_spec_yaml
    a1_spec_url = "#{@gem_repo}quick/#{@a1.full_name}.gemspec.rz"
    @fetcher.data[a1_spec_url] = util_zip @a1.to_yaml

    repo = URI.parse @gem_repo

    spec = @source_index.send :fetch_single_spec, repo, @a1.full_name

    assert_equal @a1.full_name, spec.full_name

    paths = @fetcher.paths

    assert_equal "#{@gem_repo}quick/Marshal.#{Gem.marshal_version}/#{@a1.full_name}.gemspec.rz", paths.shift
    assert_equal a1_spec_url, paths.shift

    assert_empty paths, paths.join(', ')
  end

  def test_fetch_single_spec_yaml_subdir
    repo = URI.parse "#{@gem_repo}~nobody/mirror/"

    a1_spec_url = "#{repo}quick/#{@a1.full_name}.gemspec.rz"
    @fetcher.data[a1_spec_url] = util_zip @a1.to_yaml

    spec = @source_index.send :fetch_single_spec, repo, @a1.full_name

    assert_equal @a1.full_name, spec.full_name

    paths = @fetcher.paths

    assert_equal "#{repo}quick/Marshal.#{Gem.marshal_version}/#{@a1.full_name}.gemspec.rz", paths.shift
    assert_equal a1_spec_url, paths.shift

    assert_empty paths, paths.join(', ')
  end

  def test_find_missing
    missing = @source_index.find_missing [@b2.full_name]
    assert_equal [@b2.full_name], missing
  end

  def test_find_missing_none_missing
    missing = @source_index.find_missing [
      @a1.full_name, @a2.full_name, @c1_2.full_name
    ]

    assert_equal [], missing
  end

  def test_find_name
    assert_equal [@a1, @a2], @source_index.find_name('a')
    assert_equal [@a2], @source_index.find_name('a', '= 2')
    assert_equal [], @source_index.find_name('bogusstring')
    assert_equal [], @source_index.find_name('a', '= 3')

    source_index = Gem::SourceIndex.new
    source_index.add_spec @a1
    source_index.add_spec @a2

    assert_equal [@a1], source_index.find_name(@a1.name, '= 1')

    r1 = Gem::Requirement.create '= 1'
    assert_equal [@a1], source_index.find_name(@a1.name, r1)
  end

  def test_find_name_empty_cache
    empty_source_index = Gem::SourceIndex.new({})
    assert_equal [], empty_source_index.find_name("foo")
  end

  def test_latest_specs
    p1_ruby = quick_gem 'p', '1'
    p1_platform = quick_gem 'p', '1' do |spec|
      spec.platform = Gem::Platform::CURRENT
    end

    a1_platform = quick_gem @a1.name, (@a1.version) do |s|
      s.platform = Gem::Platform.new 'x86-my_platform1'
    end

    a2_platform = quick_gem @a2.name, (@a2.version) do |s|
      s.platform = Gem::Platform.new 'x86-my_platform1'
    end

    a2_platform_other = quick_gem @a2.name, (@a2.version) do |s|
      s.platform = Gem::Platform.new 'x86-other_platform1'
    end

    a3_platform_other = quick_gem @a2.name, (@a2.version.bump) do |s|
      s.platform = Gem::Platform.new 'x86-other_platform1'
    end

    @source_index.add_spec p1_ruby
    @source_index.add_spec p1_platform
    @source_index.add_spec a1_platform
    @source_index.add_spec a2_platform
    @source_index.add_spec a2_platform_other
    @source_index.add_spec a3_platform_other

    expected = [
      @a2.full_name,
      a2_platform.full_name,
      a3_platform_other.full_name,
      @c1_2.full_name,
      @a_evil9.full_name,
      p1_ruby.full_name,
      p1_platform.full_name,
    ].sort

    latest_specs = @source_index.latest_specs.map { |s| s.full_name }.sort

    assert_equal expected, latest_specs
  end

  def test_load_gems_in
    spec_dir1 = File.join @gemhome, 'specifications'
    spec_dir2 = File.join @tempdir, 'gemhome2', 'specifications'

    FileUtils.rm_r spec_dir1

    FileUtils.mkdir_p spec_dir1
    FileUtils.mkdir_p spec_dir2

    a1 = quick_gem 'a', '1' do |spec| spec.author = 'author 1' end
    a2 = quick_gem 'a', '1' do |spec| spec.author = 'author 2' end

    File.open File.join(spec_dir1, "#{a1.full_name}.gemspec"), 'w' do |fp|
      fp.write a1.to_ruby
    end

    File.open File.join(spec_dir2, "#{a2.full_name}.gemspec"), 'w' do |fp|
      fp.write a2.to_ruby
    end

    @source_index.load_gems_in spec_dir1, spec_dir2

    assert_equal a1.author, @source_index.specification(a1.full_name).author
  end

  def test_outdated
    util_setup_spec_fetcher

    assert_equal [], @source_index.outdated

    updated = quick_gem @a2.name, (@a2.version.bump)
    util_setup_spec_fetcher updated

    assert_equal [updated.name], @source_index.outdated

    updated_platform = quick_gem @a2.name, (updated.version.bump) do |s|
      s.platform = Gem::Platform.new 'x86-other_platform1'
    end

    util_setup_spec_fetcher updated, updated_platform

    assert_equal [updated_platform.name], @source_index.outdated
  end

  def test_prerelease_specs_kept_in_right_place
    gem_a1_alpha = quick_gem 'abba', '1.a'
    @source_index.add_spec gem_a1_alpha

    refute @source_index.latest_specs.include?(gem_a1_alpha)
    assert_nil @source_index.specification(gem_a1_alpha.full_name)
    assert @source_index.prerelease_specs.include?(gem_a1_alpha)

    # TODO: don't think this tests writing prerelease index to disk
  end

  def test_refresh_bang
    a1_spec = File.join @gemhome, "specifications", "#{@a1.full_name}.gemspec" 

    FileUtils.mv a1_spec, @tempdir

    source_index = Gem::SourceIndex.from_installed_gems

    refute source_index.gems.include?(@a1.full_name)

    FileUtils.mv File.join(@tempdir, "#{@a1.full_name}.gemspec"), a1_spec

    source_index.refresh!

    assert source_index.gems.include?(@a1.full_name)
  end

  def test_refresh_bang_not_from_dir
    source_index = Gem::SourceIndex.new

    e = assert_raises RuntimeError do
      source_index.refresh!
    end

    assert_equal 'source index not created from disk', e.message
  end

  def test_remove_extra
    @source_index.add_spec @a1
    @source_index.add_spec @a2
    @source_index.add_spec @pl1

    @source_index.remove_extra [@a1.full_name, @pl1.full_name]

    assert_equal [@a1.full_name],
                 @source_index.gems.map { |n,s| n }.sort
  end

  def test_remove_extra_no_changes
    gems = [@a1.full_name, @a2.full_name]
    @source_index.add_spec @a1
    @source_index.add_spec @a2

    @source_index.remove_extra gems

    assert_equal gems, @source_index.gems.map { |n,s| n }.sort
  end

  def test_search
    requirement = Gem::Requirement.create '= 9'
    with_version = Gem::Dependency.new(/^a/, requirement)
    assert_equal [@a_evil9], @source_index.search(with_version)

    with_default = Gem::Dependency.new(/^a/, Gem::Requirement.default)
    assert_equal [@a1, @a2, @a_evil9], @source_index.search(with_default)
  end

  def test_search_platform
    util_set_arch 'x86-my_platform1'

    a1 = quick_gem 'a', '1'
    a1_mine = quick_gem 'a', '1' do |s|
      s.platform = Gem::Platform.new 'x86-my_platform1'
    end
    a1_other = quick_gem 'a', '1' do |s|
      s.platform = Gem::Platform.new 'x86-other_platform1'
    end

    si = Gem::SourceIndex.new(a1.full_name => a1, a1_mine.full_name => a1_mine,
                              a1_other.full_name => a1_other)

    dep = Gem::Dependency.new 'a', Gem::Requirement.new('1')

    gems = si.search dep, true

    assert_equal [a1, a1_mine], gems.sort
  end

  def test_signature
    sig = @source_index.gem_signature('foo-1.2.3')
    assert_equal 64, sig.length
    assert_match(/^[a-f0-9]{64}$/, sig)
  end

  def test_specification
    assert_equal @a1, @source_index.specification(@a1.full_name)

    assert_nil @source_index.specification("foo-1.2.4")
  end

  def test_index_signature
    sig = @source_index.index_signature
    assert_match(/^[a-f0-9]{64}$/, sig)
  end

  def test_unzip
    input = "x\234+\316\317MU(I\255(\001\000\021\350\003\232"
    assert_equal 'some text', @source_index.unzip(input)
  end

  def test_update_bulk
    util_setup_bulk_fetch true

    @source_index.gems.replace({})
    assert_equal [], @source_index.gems.keys.sort

    use_ui @ui do
      @source_index.update @uri, true

      assert_equal [@a1.full_name, @a2.full_name, @a_evil9.full_name,
                    @c1_2.full_name],
                   @source_index.gems.keys.sort
    end

    paths = @fetcher.paths

    assert_equal "#{@gem_repo}quick/index.rz", paths.shift
    assert_equal "#{@gem_repo}Marshal.#{@marshal_version}.Z", paths.shift

    assert_empty paths, paths.join(', ')
  end

  def test_update_incremental
    old_gem_conf = Gem.configuration
    Gem.configuration = Gem::ConfigFile.new([])

    latest_names = [@a2, @a_evil9, @b2, @c1_2].map { |s| s.full_name }
    latest_index = util_zip latest_names.join("\n")
    @fetcher.data["#{@gem_repo}quick/latest_index.rz"] = latest_index

    marshal_uri = File.join @gem_repo, "quick", "Marshal.#{@marshal_version}",
                            "#{@b2.full_name}.gemspec.rz"
    @fetcher.data[marshal_uri] = util_zip Marshal.dump(@b2)

    use_ui @ui do
      @source_index.update @uri, false

      assert_equal latest_names, @source_index.gems.keys.sort
    end

    paths = @fetcher.paths
    assert_equal "#{@gem_repo}quick/latest_index.rz", paths.shift
    assert_equal marshal_uri, paths.shift

    assert_empty paths, paths.join(', ')
  ensure
    Gem.configuration = old_gem_conf
  end

  def test_update_incremental_all
    old_gem_conf = Gem.configuration
    Gem.configuration = Gem::ConfigFile.new([])

    quick_index = util_zip @all_gem_names.join("\n")
    @fetcher.data["#{@gem_repo}quick/index.rz"] = quick_index

    marshal_uri = File.join @gem_repo, "quick", "Marshal.#{@marshal_version}",
                            "#{@b2.full_name}.gemspec.rz"
    @fetcher.data[marshal_uri] = util_zip Marshal.dump(@b2)

    use_ui @ui do
      @source_index.update @uri, true

      assert_equal @all_gem_names, @source_index.gems.keys.sort
    end

    paths = @fetcher.paths
    assert_equal "#{@gem_repo}quick/index.rz", paths.shift
    assert_equal marshal_uri, paths.shift

    assert_empty paths, paths.join(', ')
  ensure
    Gem.configuration = old_gem_conf
  end

  def test_update_incremental_fallback
    old_gem_conf = Gem.configuration
    Gem.configuration = Gem::ConfigFile.new([])

    quick_index = util_zip @all_gem_names.join("\n")
    @fetcher.data["#{@gem_repo}quick/index.rz"] = quick_index

    marshal_uri = File.join @gem_repo, "quick", "Marshal.#{@marshal_version}",
                            "#{@b2.full_name}.gemspec.rz"

    yaml_uri = "#{@gem_repo}quick/#{@b2.full_name}.gemspec.rz"
    @fetcher.data[yaml_uri] = util_zip @b2.to_yaml

    use_ui @ui do
      @source_index.update @uri, true

      assert_equal @all_gem_names, @source_index.gems.keys.sort
    end

    paths = @fetcher.paths
    assert_equal "#{@gem_repo}quick/index.rz", paths.shift
    assert_equal marshal_uri, paths.shift
    assert_equal yaml_uri, paths.shift

    assert_empty paths, paths.join(', ')
  ensure
    Gem.configuration = old_gem_conf
  end

  def test_update_incremental_marshal_mismatch
    old_gem_conf = Gem.configuration
    Gem.configuration = Gem::ConfigFile.new([])

    quick_index = util_zip @all_gem_names.join("\n")
    @fetcher.data["#{@gem_repo}quick/index.rz"] = quick_index

    marshal_uri = File.join @gem_repo, "quick", "Marshal.#{@marshal_version}",
                            "#{@b2.full_name}.gemspec.rz"
    marshal_data = Marshal.dump(@b2)
    marshal_data[0] = (Marshal::MAJOR_VERSION - 1).chr
    @fetcher.data[marshal_uri] = util_zip marshal_data

    yaml_uri = "#{@gem_repo}quick/#{@b2.full_name}.gemspec.rz"
    @fetcher.data[yaml_uri] = util_zip @b2.to_yaml

    use_ui @ui do
      @source_index.update @uri, true

      assert_equal @all_gem_names, @source_index.gems.keys.sort
    end

    paths = @fetcher.paths
    assert_equal "#{@gem_repo}quick/index.rz", paths.shift
    assert_equal marshal_uri, paths.shift
    assert_equal yaml_uri, paths.shift

    assert_empty paths, paths.join(', ')
  ensure
    Gem.configuration = old_gem_conf
  end

  def test_update_subdir
    @gem_repo = @gem_repo + 'subdir/'

    util_setup_bulk_fetch true

    @source_index.gems.replace({})
    assert_equal [], @source_index.gems.keys.sort

    uri = @uri.to_s + 'subdir/'

    use_ui @ui do
      @source_index.update uri, true

      assert_equal [@a1.full_name, @a2.full_name, @a_evil9.full_name,
                    @c1_2.full_name],
                   @source_index.gems.keys.sort
    end

    paths = @fetcher.paths

    assert_equal "#{@gem_repo}quick/index.rz", paths.shift
    assert_equal "#{@gem_repo}Marshal.#{@marshal_version}.Z", paths.shift

    assert_empty paths, paths.join(', ')
  end

  def test_update_with_missing
    marshal_uri = File.join @gem_repo, "quick", "Marshal.#{@marshal_version}",
                            "#{@c1_2.full_name}.gemspec.rz"
    dumped = Marshal.dump @c1_2
    @fetcher.data[marshal_uri] = util_zip(dumped)

    use_ui @ui do
      @source_index.update_with_missing @uri, [@c1_2.full_name]
    end

    spec = @source_index.specification(@c1_2.full_name)
    # We don't care about the equality of undumped attributes
    @c1_2.files = spec.files
    @c1_2.loaded_from = spec.loaded_from

    assert_equal @c1_2, spec
  end

  def util_setup_bulk_fetch(compressed)
    source_index = @source_index.dump

    if compressed then
      @fetcher.data["#{@gem_repo}Marshal.#{@marshal_version}.Z"] = util_zip source_index
    else
      @fetcher.data["#{@gem_repo}Marshal.#{@marshal_version}"] = source_index
    end
  end

end