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Gem::TestCase

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.

Public Class Methods

make_command() click to toggle source

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’.

 
               # File rubygems/test_case.rb, line 747
def self.make_command
  ENV["make"] || (vc_windows? ? 'nmake' : 'make')
end
            
process_based_port() click to toggle source

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.

 
               # File rubygems/test_case.rb, line 772
def self.process_based_port
  @@process_based_port ||= 8000 + $$ % 1000
end
            
rubybin() click to toggle source

Finds the path to the ruby executable

 
               # File rubygems/test_case.rb, line 804
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
            
vc_windows?() click to toggle source

Returns whether or not we’re on a version of Ruby built with VC++ (or Borland) versus Cygwin, Mingw, etc.

 
               # File rubygems/test_case.rb, line 730
def self.vc_windows?
  RUBY_PLATFORM.match('mswin')
end
            
win_platform?() click to toggle source

Is this test being run on a Windows platform?

 
               # File rubygems/test_case.rb, line 715
def self.win_platform?
  Gem.win_platform?
end
            

Public Instance Methods

all_spec_names() click to toggle source
 
               # File rubygems/test_case.rb, line 328
def all_spec_names
  Gem::Specification.map(&:full_name)
end
            
assert_path_exists(path, msg = nil) click to toggle source

TODO: move to minitest

 
               # File rubygems/test_case.rb, line 84
def assert_path_exists path, msg = nil
  msg = message(msg) { "Expected path '#{path}' to exist" }
  assert File.exist?(path), msg
end
            
build_rake_in() click to toggle source

Allows the proper version of rake to be used for the test.

 
               # File rubygems/test_case.rb, line 786
def build_rake_in
  gem_ruby = Gem.ruby
  Gem.ruby = @@ruby
  env_rake = ENV["rake"]
  ENV["rake"] = @@rake
  yield @@rake
ensure
  Gem.ruby = gem_ruby
  if env_rake
    ENV["rake"] = env_rake
  else
    ENV.delete("rake")
  end
end
            
create_tmpdir() click to toggle source

creates a temporary directory with hax

 
               # File rubygems/test_case.rb, line 279
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
            
dep(name, *requirements) click to toggle source

Construct a new Gem::Dependency.

 
               # File rubygems/test_case.rb, line 844
def dep name, *requirements
  Gem::Dependency.new name, *requirements
end
            
install_gem(spec, options = {}) click to toggle source

Builds and installs the Gem::Specification spec

 
               # File rubygems/test_case.rb, line 246
def install_gem spec, options = {}
  require 'rubygems/installer'

  use_ui Gem::MockGemUi.new do
    Dir.chdir @tempdir do
      Gem::Builder.new(spec).build
    end
  end

  gem = File.join(@tempdir, File.basename(spec.cache_file)).untaint

  Gem::Installer.new(gem, options.merge({:wrappers => true})).install
end
            
install_gem_user(spec) click to toggle source

Builds and installs the Gem::Specification spec into the user dir

 
               # File rubygems/test_case.rb, line 263
def install_gem_user spec
  install_gem spec, :user_install => true
end
            
install_specs(*specs) click to toggle source

Install the provided specs

 
               # File rubygems/test_case.rb, line 432
def install_specs(*specs)
  Gem::Specification.add_specs(*specs)
  Gem.searcher = nil
end
            
make_command() click to toggle source

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’.

 
               # File rubygems/test_case.rb, line 756
def make_command
  ENV["make"] || (vc_windows? ? 'nmake' : 'make')
end
            
mu_pp(obj) click to toggle source

Enables pretty-print for all tests

 
               # File rubygems/test_case.rb, line 290
def mu_pp(obj)
  s = ''
  s = PP.pp obj, s
  s = s.force_encoding(Encoding.default_external) if defined? Encoding
  s.chomp
end
            
new_spec(name, version, deps = nil, *files) click to toggle source

Create a new spec (or gem if passed an array of files) and set it up properly. Use this instead of #util_spec and util_gem.

 
               # File rubygems/test_case.rb, line 441
def new_spec name, version, deps = nil, *files
  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
            
nmake_found?() click to toggle source

Returns whether or not the nmake command could be found.

 
               # File rubygems/test_case.rb, line 763
def nmake_found?
  system('nmake /? 1>NUL 2>&1')
end
            
process_based_port() click to toggle source

See ::process_based_port

 
               # File rubygems/test_case.rb, line 779
def process_based_port
  self.class.process_based_port
end
            
quick_gem(name, version='2') click to toggle source

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 to the current source_index.

Use this with write_file to build an installed gem.

 
               # File rubygems/test_case.rb, line 343
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
            
quick_spec(name, version = '2') click to toggle source
 
               # File rubygems/test_case.rb, line 372
def quick_spec name, version = '2'
  # TODO: deprecate
  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

  spec.loaded_from = spec.spec_file

  Gem::Specification.add_spec spec

  return spec
end
            
read_binary(path) click to toggle source

Reads a binary file at path

 
               # File rubygems/test_case.rb, line 309
def read_binary(path)
  Gem.read_binary path
end
            
read_cache(path) click to toggle source

Reads a Marshal file at path

 
               # File rubygems/test_case.rb, line 300
def read_cache(path)
  open path.dup.untaint, 'rb' do |io|
    Marshal.load io.read
  end
end
            
refute_path_exists(path, msg = nil) click to toggle source

TODO: move to minitest

 
               # File rubygems/test_case.rb, line 90
def refute_path_exists path, msg = nil
  msg = message(msg) { "Expected path '#{path}' to not exist" }
  refute File.exist?(path), msg
end
            
req(*requirements) click to toggle source

Constructs a new Gem::Requirement.

 
               # File rubygems/test_case.rb, line 851
def req *requirements
  return requirements.first if Gem::Requirement === requirements.first
  Gem::Requirement.create requirements
end
            
setup() click to toggle source

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 i386-mswin32 for Windows or i686-darwin8.10.1 otherwise.

If the KEEP_FILES environment variable is set the files will not be removed from /tmp/test_rubygems_#{$$}.#{Time.now.to_i}.

 
               # File rubygems/test_case.rb, line 113
def setup
  super

  @orig_gem_home = ENV['GEM_HOME']
  @orig_gem_path = ENV['GEM_PATH']

  @current_dir = Dir.pwd
  @ui = Gem::MockGemUi.new

  tmpdir = nil
  Dir.chdir Dir.tmpdir do tmpdir = Dir.pwd end # HACK OSX /private/tmp

  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
  @gemhome  = File.join @tempdir, 'gemhome'
  @userhome = File.join @tempdir, 'userhome'

  @orig_ruby = if ruby = ENV['RUBY'] then
                 Gem.class_eval { ruby, @ruby = @ruby, ruby }
                 ruby
               end

  Gem.ensure_gem_subdirectories @gemhome

  @orig_LOAD_PATH = $LOAD_PATH.dup
  $LOAD_PATH.map! { |s| File.expand_path s }

  Dir.chdir @tempdir

  @orig_ENV_HOME = ENV['HOME']
  ENV['HOME'] = @userhome
  Gem.instance_variable_set :@user_home, nil

  FileUtils.mkdir_p @gemhome
  FileUtils.mkdir_p @userhome

  Gem.use_paths(@gemhome)

  Gem.loaded_specs.clear
  Gem.unresolved_deps.clear

  Gem.configuration.verbose = true
  Gem.configuration.update_sources = true

  @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 = Gem::ConfigMap[:BASERUBY]
  Gem::ConfigMap[:BASERUBY] = Gem::ConfigMap[:ruby_install_name]

  @orig_arch = Gem::ConfigMap[: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}"

  # TODO: move to installer test cases
  Gem.post_build_hooks.clear
  Gem.post_install_hooks.clear
  Gem.post_uninstall_hooks.clear
  Gem.pre_install_hooks.clear
  Gem.pre_uninstall_hooks.clear

  # TODO: move to installer test cases
  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
            
spec(name, version, &block) click to toggle source

Constructs a new Gem::Specification.

 
               # File rubygems/test_case.rb, line 859
def spec name, version, &block
  Gem::Specification.new name, v(version), &block
end
            
teardown() click to toggle source

teardown restores the process to its original state and removes the tempdir unless the KEEP_FILES environment variable was set.

 
               # File rubygems/test_case.rb, line 216
def teardown
  $LOAD_PATH.replace @orig_LOAD_PATH

  Gem::ConfigMap[:BASERUBY] = @orig_BASERUBY
  Gem::ConfigMap[: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

  _ = @orig_ruby
  Gem.class_eval { @ruby = _ } if _

  if @orig_ENV_HOME then
    ENV['HOME'] = @orig_ENV_HOME
  else
    ENV.delete 'HOME'
  end
end
            
uninstall_gem(spec) click to toggle source

Uninstalls the Gem::Specification spec

 
               # File rubygems/test_case.rb, line 269
def uninstall_gem spec
  require 'rubygems/uninstaller'

  Gem::Uninstaller.new(spec.name,
                       :executables => true, :user_install => true).uninstall
end
            
util_build_gem(spec) click to toggle source

Builds a gem from spec and places it in File.join @gemhome, 'cache'. Automatically creates files based on spec.files

 
               # File rubygems/test_case.rb, line 400
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::Builder.new(spec).build
    end

    cache = spec.cache_file
    FileUtils.mv File.basename(cache), cache
  end
end
            
util_clear_gems() click to toggle source

Removes all installed gems from +@gemhome+.

 
               # File rubygems/test_case.rb, line 423
def util_clear_gems
  FileUtils.rm_rf File.join(@gemhome, "gems") # TODO: use Gem::Dirs
  FileUtils.rm_rf File.join(@gemhome, "specifications")
  Gem::Specification.reset
end
            
util_gem(name, version, deps = nil, &block) click to toggle source

Creates a gem with name, version and deps. The specification will be yielded before gem creation for customization. The gem will be placed in File.join @tempdir, 'gems'. The specification and .gem file location are returned.

 
               # File rubygems/test_case.rb, line 508
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
      # deteriminstic 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
            
util_gzip(data) click to toggle source

Gzips data.

 
               # File rubygems/test_case.rb, line 540
def util_gzip(data)
  out = StringIO.new

  Zlib::GzipWriter.wrap out do |io|
    io.write data
  end

  out.string
end
            
util_make_gems(prerelease = false) click to toggle source

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

 
               # File rubygems/test_case.rb, line 568
  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)

    @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 #{@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])

    [@a1, @a2, @a3a, @a_evil9, @b2, @c1_2, @pl1].each do |spec|
      util_build_gem spec
    end

    FileUtils.rm_r File.join(@gemhome, "gems", @pl1.original_name)
  end
            
util_set_arch(arch) click to toggle source

Set the platform to arch

 
               # File rubygems/test_case.rb, line 626
def util_set_arch(arch)
  Gem::ConfigMap[:arch] = arch
  platform = Gem::Platform.new arch

  Gem.instance_variable_set :@platforms, nil
  Gem::Platform.instance_variable_set :@local, nil

  platform
end
            
util_setup_fake_fetcher(prerelease = false) click to toggle source

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.

 
               # File rubygems/test_case.rb, line 642
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
            
util_setup_spec_fetcher(*specs) click to toggle source

Sets up Gem::SpecFetcher to return information from the gems in specs. Best used with +@all_gems+ from util_setup_fake_fetcher.

 
               # File rubygems/test_case.rb, line 665
def util_setup_spec_fetcher(*specs)
  specs -= Gem::Specification._all
  Gem::Specification.add_specs(*specs)

  spec_fetcher = Gem::SpecFetcher.fetcher

  prerelease, _ = Gem::Specification.partition { |spec|
    spec.version.prerelease?
  }

  spec_fetcher.specs[@uri] = []
  Gem::Specification.each do |spec|
    spec_tuple = [spec.name, spec.version, spec.original_platform]
    spec_fetcher.specs[@uri] << spec_tuple
  end

  spec_fetcher.latest_specs[@uri] = []
  Gem::Specification.latest_specs.each do |spec|
    spec_tuple = [spec.name, spec.version, spec.original_platform]
    spec_fetcher.latest_specs[@uri] << spec_tuple
  end

  spec_fetcher.prerelease_specs[@uri] = []
  prerelease.each do |spec|
    spec_tuple = [spec.name, spec.version, spec.original_platform]
    spec_fetcher.prerelease_specs[@uri] << spec_tuple
  end

  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 unless Gem::RemoteFetcher === @fetcher # HACK for test_download_to_cache

  nil # force errors
end
            
util_spec(name, version, deps = nil, &block) click to toggle source

Creates a spec with name, version and deps.

 
               # File rubygems/test_case.rb, line 484
def util_spec(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
      # deteriminstic on all implementations.
      deps.keys.sort.each do |n|
        s.add_dependency n, (deps[n] || '>= 0')
      end
    end
  end

  quick_spec(name, version, &block)
end
            
util_zip(data) click to toggle source

Deflates data

 
               # File rubygems/test_case.rb, line 708
def util_zip(data)
  Zlib::Deflate.deflate data
end
            
v(string) click to toggle source

Construct a new Gem::Version.

 
               # File rubygems/test_case.rb, line 866
def v string
  Gem::Version.create string
end
            
vc_windows?() click to toggle source

Returns whether or not we’re on a version of Ruby built with VC++ (or Borland) versus Cygwin, Mingw, etc.

 
               # File rubygems/test_case.rb, line 738
def vc_windows?
  RUBY_PLATFORM.match('mswin')
end
            
win_platform?() click to toggle source

Is this test being run on a Windows platform?

 
               # File rubygems/test_case.rb, line 722
def win_platform?
  Gem.win_platform?
end
            
write_file(path) click to toggle source

Writes a binary file to path which is relative to +@gemhome+

 
               # File rubygems/test_case.rb, line 316
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
            

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