# frozen_string_literal: true require_relative 'helper' require 'rubygems' class TestGemRequire < Gem::TestCase class Latch def initialize(count = 1) @count = count @lock = Monitor.new @cv = @lock.new_cond end def release @lock.synchronize do @count -= 1 if @count > 0 @cv.broadcast if @count.zero? end end def await @lock.synchronize do @cv.wait_while { @count > 0 } end end end def setup super @old_loaded_features = $LOADED_FEATURES.dup assert_raise LoadError do require 'test_gem_require_a' end $LOADED_FEATURES.replace @old_loaded_features end def assert_require(path) assert require(path), "'#{path}' was already required" end def refute_require(path) refute require(path), "'#{path}' was not yet required" end def test_respect_loaded_features_caching_like_standard_require dir = Dir.mktmpdir("test_require", @tempdir) lp1 = File.join dir, 'foo1' foo1 = File.join lp1, 'foo.rb' FileUtils.mkdir_p lp1 File.open(foo1, 'w') {|f| f.write "class Object; HELLO = 'foo1' end" } lp = $LOAD_PATH.dup $LOAD_PATH.unshift lp1 assert_require 'foo' assert_equal "foo1", ::Object::HELLO lp2 = File.join dir, 'foo2' foo2 = File.join lp2, 'foo.rb' FileUtils.mkdir_p lp2 File.open(foo2, 'w') {|f| f.write "class Object; HELLO = 'foo2' end" } $LOAD_PATH.unshift lp2 refute_require 'foo' assert_equal "foo1", ::Object::HELLO ensure $LOAD_PATH.replace lp Object.send :remove_const, :HELLO if Object.const_defined? :HELLO end # Providing -I on the commandline should always beat gems def test_dash_i_beats_gems a1 = util_spec "a", "1", {"b" => "= 1"}, "lib/test_gem_require_a.rb" b1 = util_spec "b", "1", {"c" => "> 0"}, "lib/b/c.rb" c1 = util_spec "c", "1", nil, "lib/c/c.rb" c2 = util_spec "c", "2", nil, "lib/c/c.rb" install_specs c1, c2, b1, a1 dir = Dir.mktmpdir("test_require", @tempdir) dash_i_arg = File.join dir, 'lib' c_rb = File.join dash_i_arg, 'b', 'c.rb' FileUtils.mkdir_p File.dirname c_rb File.open(c_rb, 'w') {|f| f.write "class Object; HELLO = 'world' end" } lp = $LOAD_PATH.dup # Pretend to provide a commandline argument that overrides a file in gem b $LOAD_PATH.unshift dash_i_arg assert_require 'test_gem_require_a' assert_require 'b/c' # this should be required from -I assert_equal "world", ::Object::HELLO assert_equal %w[a-1 b-1], loaded_spec_names ensure $LOAD_PATH.replace lp Object.send :remove_const, :HELLO if Object.const_defined? :HELLO end def create_sync_thread Thread.new do begin yield ensure FILE_ENTERED_LATCH.release FILE_EXIT_LATCH.await end end end # Providing -I on the commandline should always beat gems def test_dash_i_beats_default_gems a1 = new_default_spec "a", "1", {"b" => "= 1"}, "test_gem_require_a.rb" b1 = new_default_spec "b", "1", {"c" => "> 0"}, "b/c.rb" c1 = new_default_spec "c", "1", nil, "c/c.rb" c2 = new_default_spec "c", "2", nil, "c/c.rb" install_default_gems c1, c2, b1, a1 dir = Dir.mktmpdir("test_require", @tempdir) dash_i_arg = File.join dir, 'lib' c_rb = File.join dash_i_arg, 'c', 'c.rb' FileUtils.mkdir_p File.dirname c_rb File.open(c_rb, 'w') {|f| f.write "class Object; HELLO = 'world' end" } assert_require 'test_gem_require_a' lp = $LOAD_PATH.dup # Pretend to provide a commandline argument that overrides a file in gem b $LOAD_PATH.unshift dash_i_arg assert_require 'b/c' assert_require 'c/c' # this should be required from -I assert_equal "world", ::Object::HELLO assert_equal %w[a-1 b-1], loaded_spec_names ensure $LOAD_PATH.replace lp Object.send :remove_const, :HELLO if Object.const_defined? :HELLO end def test_dash_i_respects_default_library_extension_priority pend "extensions don't quite work on jruby" if Gem.java_platform? pend "not installed yet" unless RbConfig::TOPDIR dash_i_ext_arg = util_install_extension_file('a') dash_i_lib_arg = util_install_ruby_file('a') lp = $LOAD_PATH.dup begin $LOAD_PATH.unshift dash_i_lib_arg $LOAD_PATH.unshift dash_i_ext_arg assert_require 'a' assert_match(/a\.rb$/, $LOADED_FEATURES.last) ensure $LOAD_PATH.replace lp end end def test_concurrent_require Object.const_set :FILE_ENTERED_LATCH, Latch.new(2) Object.const_set :FILE_EXIT_LATCH, Latch.new(1) a1 = util_spec "a#{$$}", "1", nil, "lib/a#{$$}.rb" b1 = util_spec "b#{$$}", "1", nil, "lib/b#{$$}.rb" install_specs a1, b1 t1 = create_sync_thread{ assert_require "a#{$$}" } t2 = create_sync_thread{ assert_require "b#{$$}" } # wait until both files are waiting on the exit latch FILE_ENTERED_LATCH.await # now let them finish FILE_EXIT_LATCH.release assert t1.join, "thread 1 should exit" assert t2.join, "thread 2 should exit" ensure Object.send :remove_const, :FILE_ENTERED_LATCH if Object.const_defined? :FILE_ENTERED_LATCH Object.send :remove_const, :FILE_EXIT_LATCH if Object.const_defined? :FILE_EXIT_LATCH end def test_require_is_not_lazy_with_exact_req a1 = util_spec "a", "1", {"b" => "= 1"}, "lib/test_gem_require_a.rb" b1 = util_spec "b", "1", nil, "lib/b/c.rb" b2 = util_spec "b", "2", nil, "lib/b/c.rb" install_specs b1, b2, a1 assert_require 'test_gem_require_a' assert_equal %w[a-1 b-1], loaded_spec_names assert_equal unresolved_names, [] assert_require "b/c" assert_equal %w[a-1 b-1], loaded_spec_names end def test_require_is_lazy_with_inexact_req a1 = util_spec "a", "1", {"b" => ">= 1"}, "lib/test_gem_require_a.rb" b1 = util_spec "b", "1", nil, "lib/b/c.rb" b2 = util_spec "b", "2", nil, "lib/b/c.rb" install_specs b1, b2, a1 assert_require 'test_gem_require_a' assert_equal %w[a-1], loaded_spec_names assert_equal unresolved_names, ["b (>= 1)"] assert_require "b/c" assert_equal %w[a-1 b-2], loaded_spec_names end def test_require_is_not_lazy_with_one_possible a1 = util_spec "a", "1", {"b" => ">= 1"}, "lib/test_gem_require_a.rb" b1 = util_spec "b", "1", nil, "lib/b/c.rb" install_specs b1, a1 assert_require 'test_gem_require_a' assert_equal %w[a-1 b-1], loaded_spec_names assert_equal unresolved_names, [] assert_require "b/c" assert_equal %w[a-1 b-1], loaded_spec_names end def test_require_can_use_a_pathname_object a1 = util_spec "a", "1", nil, "lib/test_gem_require_a.rb" install_specs a1 assert_require Pathname.new 'test_gem_require_a' assert_equal %w[a-1], loaded_spec_names assert_equal unresolved_names, [] end def test_activate_via_require_respects_loaded_files pend "Not sure what's going on. If another spec creates a 'a' gem before this test, somehow require will load the benchmark in b, and ignore that the stdlib one is already in $LOADED_FEATURES?. Reproducible by running the spaceship_specific_file test before this one" if java_platform? pend "not installed yet" unless RbConfig::TOPDIR lib_dir = File.expand_path("../../lib", File.dirname(__FILE__)) rubylibdir = File.realdirpath(RbConfig::CONFIG["rubylibdir"]) if rubylibdir == lib_dir # testing in the ruby repository where RubyGems' lib/ == stdlib lib/ # In that case we want to move the stdlib lib/ to still be after b-2 in $LOAD_PATH lp = $LOAD_PATH.dup $LOAD_PATH.delete lib_dir $LOAD_PATH.push lib_dir load_path_changed = true end require 'benchmark' # the stdlib a1 = util_spec "a", "1", {"b" => ">= 1"}, "lib/test_gem_require_a.rb" b1 = util_spec "b", "1", nil, "lib/benchmark.rb" b2 = util_spec "b", "2", nil, "lib/benchmark.rb" install_specs b1, b2, a1 # Activates a-1, but not b-1 and b-2 assert_require 'test_gem_require_a' assert_equal %w[a-1], loaded_spec_names assert $LOAD_PATH.include? a1.load_paths[0] refute $LOAD_PATH.include? b1.load_paths[0] refute $LOAD_PATH.include? b2.load_paths[0] assert_equal unresolved_names, ["b (>= 1)"] # The require('benchmark') below will activate b-2. However, its # lib/benchmark.rb won't ever be loaded. The reason is MRI sees that even # though b-2 is earlier in $LOAD_PATH it already loaded a benchmark.rb file # and that still exists in $LOAD_PATH (further down), # and as a result #gem_original_require returns false. refute require('benchmark'), "the benchmark stdlib should be recognized as already loaded" assert_includes $LOAD_PATH, b2.load_paths[0] assert_includes $LOAD_PATH, rubylibdir message = proc { "this test relies on the b-2 gem lib/ to be before stdlib to make sense\n" + $LOAD_PATH.pretty_inspect } assert_operator $LOAD_PATH.index(b2.load_paths[0]), :<, $LOAD_PATH.index(rubylibdir), message # We detected that we should activate b-2, so we did so, but # then #gem_original_require decided "I've already got some benchmark.rb" loaded. # This case is fine because our lazy loading provided exactly # the same behavior as eager loading would have. assert_equal %w[a-1 b-2], loaded_spec_names ensure $LOAD_PATH.replace lp if load_path_changed end def test_activate_via_require_respects_loaded_default_from_default_gems a1 = new_default_spec "a", "1", nil, "a.rb" # simulate requiring a default gem before rubygems is loaded Kernel.send(:gem_original_require, "a") # simulate registering default specs on loading rubygems install_default_gems a1 a2 = util_spec "a", "2", nil, "lib/a.rb" install_specs a2 refute_require 'a' assert_equal %w[a-1], loaded_spec_names end def test_already_activated_direct_conflict a1 = util_spec "a", "1", { "b" => "> 0" } b1 = util_spec "b", "1", { "c" => ">= 1" }, "lib/ib.rb" b2 = util_spec "b", "2", { "c" => ">= 2" }, "lib/ib.rb" c1 = util_spec "c", "1", nil, "lib/d.rb" c2 = util_spec("c", "2", nil, "lib/d.rb") install_specs c1, c2, b1, b2, a1 a1.activate c1.activate assert_equal %w[a-1 c-1], loaded_spec_names assert_equal ["b (> 0)"], unresolved_names assert require("ib") assert_equal %w[a-1 b-1 c-1], loaded_spec_names assert_equal [], unresolved_names end def test_multiple_gems_with_the_same_path a1 = util_spec "a", "1", { "b" => "> 0", "x" => "> 0" } b1 = util_spec "b", "1", { "c" => ">= 1" }, "lib/ib.rb" b2 = util_spec "b", "2", { "c" => ">= 2" }, "lib/ib.rb" x1 = util_spec "x", "1", nil, "lib/ib.rb" x2 = util_spec "x", "2", nil, "lib/ib.rb" c1 = util_spec "c", "1", nil, "lib/d.rb" c2 = util_spec("c", "2", nil, "lib/d.rb") install_specs c1, c2, x1, x2, b1, b2, a1 a1.activate c1.activate assert_equal %w[a-1 c-1], loaded_spec_names assert_equal ["b (> 0)", "x (> 0)"], unresolved_names e = assert_raise(Gem::LoadError) do require("ib") end assert_equal "ib found in multiple gems: b, x", e.message end def test_unable_to_find_good_unresolved_version a1 = util_spec "a", "1", { "b" => "> 0" } b1 = util_spec "b", "1", { "c" => ">= 2" }, "lib/ib.rb" b2 = util_spec "b", "2", { "c" => ">= 3" }, "lib/ib.rb" c1 = util_spec "c", "1", nil, "lib/d.rb" c2 = util_spec "c", "2", nil, "lib/d.rb" c3 = util_spec "c", "3", nil, "lib/d.rb" install_specs c1, c2, c3, b1, b2, a1 a1.activate c1.activate assert_equal %w[a-1 c-1], loaded_spec_names assert_equal ["b (> 0)"], unresolved_names e = assert_raise(Gem::LoadError) do require("ib") end assert_equal "unable to find a version of 'b' to activate", e.message end def test_require_works_after_cleanup a1 = new_default_spec "a", "1.0", nil, "a/b.rb" b1 = new_default_spec "b", "1.0", nil, "b/c.rb" b2 = new_default_spec "b", "2.0", nil, "b/d.rb" install_default_gems a1 install_default_gems b1 install_default_gems b2 # Load default ruby gems fresh as if we've just started a ruby script. Gem::Specification.reset require 'rubygems' Gem::Specification.stubs # Remove an old default gem version directly from disk as if someone ran # gem cleanup. FileUtils.rm_rf(File.join @gemhome, "#{b1.full_name}") FileUtils.rm_rf(File.join @gemhome, "specifications", "default", "#{b1.full_name}.gemspec") # Require gems that have not been removed. assert_require 'a/b' assert_equal %w[a-1.0], loaded_spec_names assert_require 'b/d' assert_equal %w[a-1.0 b-2.0], loaded_spec_names end def test_require_doesnt_traverse_development_dependencies a = util_spec("a#{$$}", "1", nil, "lib/a#{$$}.rb") z = util_spec("z", "1", "w" => "> 0") w1 = util_spec("w", "1") {|s| s.add_development_dependency "non-existent" } w2 = util_spec("w", "2") {|s| s.add_development_dependency "non-existent" } install_specs a, w1, w2, z assert gem("z") assert_equal %w[z-1], loaded_spec_names assert_equal ["w (> 0)"], unresolved_names assert require("a#{$$}") end def test_default_gem_only default_gem_spec = new_default_spec("default", "2.0.0.0", nil, "default/gem.rb") install_default_gems(default_gem_spec) assert_require "default/gem" assert_equal %w[default-2.0.0.0], loaded_spec_names end def test_default_gem_require_activates_just_once default_gem_spec = new_default_spec("default", "2.0.0.0", nil, "default/gem.rb") install_default_gems(default_gem_spec) assert_require "default/gem" times_called = 0 Kernel.stub(:gem, ->(name, requirement) { times_called += 1 }) do refute_require "default/gem" end assert_equal 0, times_called end def test_second_gem_require_does_not_resolve_path_manually_before_going_through_standard_require a1 = util_spec "a", "1", nil, "lib/test_gem_require_a.rb" install_gem a1 assert_require "test_gem_require_a" stub(:gem_original_require, ->(path) { assert_equal "test_gem_require_a", path }) do require "test_gem_require_a" end end def test_realworld_default_gem testing_ruby_repo = !ENV["GEM_COMMAND"].nil? pend "this test can't work under ruby-core setup" if testing_ruby_repo || java_platform? cmd = <<-RUBY $stderr = $stdout require "json" puts Gem.loaded_specs["json"] RUBY output = Gem::Util.popen(*ruby_with_rubygems_in_load_path, "-e", cmd).strip assert $?.success? refute_empty output end def test_realworld_upgraded_default_gem testing_ruby_repo = !ENV["GEM_COMMAND"].nil? pend "this test can't work under ruby-core setup" if testing_ruby_repo newer_json = util_spec("json", "999.99.9", nil, ["lib/json.rb"]) install_gem newer_json path = "#{@tempdir}/test_realworld_upgraded_default_gem.rb" code = <<-RUBY $stderr = $stdout require "json" puts Gem.loaded_specs["json"].version puts $LOADED_FEATURES RUBY File.write(path, code) output = Gem::Util.popen({ 'GEM_HOME' => @gemhome }, *ruby_with_rubygems_in_load_path, path).strip assert $?.success? refute_empty output assert_equal "999.99.9", output.lines[0].chomp # Make sure only files from the newer json gem are loaded, and no files from the default json gem assert_equal ["#{@gemhome}/gems/json-999.99.9/lib/json.rb"], output.lines.grep(%r{/gems/json-}).map(&:chomp) end def test_default_gem_and_normal_gem default_gem_spec = new_default_spec("default", "2.0.0.0", nil, "default/gem.rb") install_default_gems(default_gem_spec) normal_gem_spec = util_spec("default", "3.0", nil, "lib/default/gem.rb") install_specs(normal_gem_spec) assert_require "default/gem" assert_equal %w[default-3.0], loaded_spec_names end def test_normal_gems_with_overridden_load_error_message normal_gem_spec = util_spec("normal", "3.0", nil, "lib/normal/gem.rb") install_specs(normal_gem_spec) File.write("require_with_overridden_load_error_message.rb", <<-RUBY) LoadError.class_eval do def message "Overridden message" end end require 'normal/gem' RUBY require "open3" output, exit_status = Open3.capture2e( { "GEM_HOME" => Gem.paths.home }, *ruby_with_rubygems_in_load_path, "-r", "./require_with_overridden_load_error_message.rb" ) assert exit_status.success?, "Require failed due to #{output}" end def test_default_gem_prerelease default_gem_spec = new_default_spec("default", "2.0.0", nil, "default/gem.rb") install_default_gems(default_gem_spec) normal_gem_higher_prerelease_spec = util_spec("default", "3.0.0.rc2", nil, "lib/default/gem.rb") install_default_gems(normal_gem_higher_prerelease_spec) assert_require "default/gem" assert_equal %w[default-3.0.0.rc2], loaded_spec_names 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 test_try_activate_error_unlocks_require_monitor silence_warnings do class << ::Gem alias old_try_activate try_activate def try_activate(*); raise 'raised from try_activate'; end end end require 'does_not_exist_for_try_activate_test' rescue RuntimeError => e assert_match(/raised from try_activate/, e.message) assert Kernel::RUBYGEMS_ACTIVATION_MONITOR.try_enter, "require monitor was not unlocked when try_activate raised" ensure silence_warnings do class << ::Gem alias try_activate old_try_activate end end Kernel::RUBYGEMS_ACTIVATION_MONITOR.exit end def test_require_when_gem_defined default_gem_spec = new_default_spec("default", "2.0.0.0", nil, "default/gem.rb") install_default_gems(default_gem_spec) c = Class.new do def self.gem(*args) raise "received #gem with #{args.inspect}" end end assert c.send(:require, "default/gem") assert_equal %w[default-2.0.0.0], loaded_spec_names end def test_require_default_when_gem_defined a = util_spec("a#{$$}", "1", nil, "lib/a#{$$}.rb") install_specs a c = Class.new do def self.gem(*args) raise "received #gem with #{args.inspect}" end end assert c.send(:require, "a#{$$}") assert_equal %W[a#{$$}-1], loaded_spec_names end def test_require_bundler b1 = util_spec('bundler', '1', nil, "lib/bundler/setup.rb") b2a = util_spec('bundler', '2.a', nil, "lib/bundler/setup.rb") install_specs b1, b2a require "rubygems/bundler_version_finder" $:.clear assert_require 'bundler/setup' assert_equal %w[bundler-2.a], loaded_spec_names assert_empty unresolved_names end def test_require_bundler_missing_bundler_version Gem::BundlerVersionFinder.stub(:bundler_version_with_reason, ["55", "reason"]) do b1 = util_spec('bundler', '1.999999999', nil, "lib/bundler/setup.rb") b2a = util_spec('bundler', '2.a', nil, "lib/bundler/setup.rb") install_specs b1, b2a e = assert_raise Gem::MissingSpecVersionError do gem('bundler') end assert_match "Could not find 'bundler' (55) required by reason.", e.message end end def test_require_bundler_with_bundler_version Gem::BundlerVersionFinder.stub(:bundler_version_with_reason, ["1", "reason"]) do b1 = util_spec('bundler', '1.999999999', nil, "lib/bundler/setup.rb") b2 = util_spec('bundler', '2', nil, "lib/bundler/setup.rb") install_specs b1, b2 $:.clear assert_require 'bundler/setup' assert_equal %w[bundler-1.999999999], loaded_spec_names end end # uplevel is 2.5+ only if RUBY_VERSION >= "2.5" ["", "Kernel."].each do |prefix| define_method "test_no_kernel_require_in_#{prefix.tr(".", "_")}warn_with_uplevel" do Dir.mktmpdir("warn_test") do |dir| File.write(dir + "/sub.rb", "#{prefix}warn 'uplevel', 'test', uplevel: 1\n") File.write(dir + "/main.rb", "require 'sub'\n") _, err = capture_subprocess_io do system(*ruby_with_rubygems_in_load_path, "-w", "--disable=gems", "-C", dir, "-I", dir, "main.rb") end assert_match(/main\.rb:1: warning: uplevel\ntest\n$/, err) _, err = capture_subprocess_io do system(*ruby_with_rubygems_in_load_path, "-w", "--enable=gems", "-C", dir, "-I", dir, "main.rb") end assert_match(/main\.rb:1: warning: uplevel\ntest\n$/, err) end end define_method "test_no_other_behavioral_changes_with_#{prefix.tr(".", "_")}warn" do Dir.mktmpdir("warn_test") do |dir| File.write(dir + "/main.rb", "#{prefix}warn({x:1}, {y:2}, [])\n") _, err = capture_subprocess_io do system(*ruby_with_rubygems_in_load_path, "-w", "--disable=gems", "-C", dir, "main.rb") end assert_match(/{:x=>1}\n{:y=>2}\n$/, err) _, err = capture_subprocess_io do system(*ruby_with_rubygems_in_load_path, "-w", "--enable=gems", "-C", dir, "main.rb") end assert_match(/{:x=>1}\n{:y=>2}\n$/, err) end end end def test_no_crash_when_overriding_warn_with_warning_module Dir.mktmpdir("warn_test") do |dir| File.write(dir + "/main.rb", "module Warning; def warn(str); super; end; end; warn 'Foo Bar'") _, err = capture_subprocess_io do system(*ruby_with_rubygems_in_load_path, "-w", "--disable=gems", "-C", dir, "main.rb") end assert_match(/Foo Bar\n$/, err) _, err = capture_subprocess_io do system(*ruby_with_rubygems_in_load_path, "-w", "--enable=gems", "-C", dir, "main.rb") end assert_match(/Foo Bar\n$/, err) end end def test_expected_backtrace_location_when_inheriting_from_basic_object_and_including_kernel Dir.mktmpdir("warn_test") do |dir| File.write(dir + "/main.rb", "\nrequire 'sub'\n") File.write(dir + "/sub.rb", <<-'RUBY') require 'rubygems' class C < BasicObject include ::Kernel def deprecated warn "This is a deprecated method", uplevel: 2 end end C.new.deprecated RUBY _, err = capture_subprocess_io do system(*ruby_with_rubygems_in_load_path, "-w", "--disable=gems", "-C", dir, "-I", dir, "main.rb") end assert_match(/main\.rb:2: warning: This is a deprecated method$/, err) _, err = capture_subprocess_io do system(*ruby_with_rubygems_in_load_path, "-w", "--enable=gems", "-C", dir, "-I", dir, "main.rb") end assert_match(/main\.rb:2: warning: This is a deprecated method$/, err) end end end private def silence_warnings old_verbose, $VERBOSE = $VERBOSE, false yield ensure $VERBOSE = old_verbose end def util_install_extension_file(name) spec = quick_gem name util_build_gem spec spec.extensions << "extconf.rb" write_file File.join(@tempdir, "extconf.rb") do |io| io.write <<-RUBY require "mkmf" CONFIG['LDSHARED'] = '$(TOUCH) $@ ||' create_makefile("#{name}") RUBY end write_file File.join(@tempdir, "#{name}.c") do |io| io.write <<-C void Init_#{name}() { } C end write_file File.join(@tempdir, "depend") spec.files += ["extconf.rb", "depend", "#{name}.c"] so = File.join(spec.gem_dir, "#{name}.#{RbConfig::CONFIG["DLEXT"]}") assert_path_not_exist so path = Gem::Package.build spec installer = Gem::Installer.at path installer.install assert_path_exist so spec.gem_dir end def util_install_ruby_file(name) dir_lib = Dir.mktmpdir("test_require_lib", @tempdir) dash_i_lib_arg = File.join dir_lib a_rb = File.join dash_i_lib_arg, "#{name}.rb" FileUtils.mkdir_p File.dirname a_rb File.open(a_rb, 'w') {|f| f.write "# #{name}.rb" } dash_i_lib_arg end end