# frozen_string_literal: true require 'rubygems/test_case' 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_raises 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 append_latch spec dir = spec.gem_dir Dir.chdir dir do spec.files.each do |file| File.open file, 'a' do |fp| fp.puts "FILE_ENTERED_LATCH.release" fp.puts "FILE_EXIT_LATCH.await" end end end end # Providing -I on the commandline should always beat gems def test_dash_i_beats_gems a1 = new_spec "a", "1", {"b" => "= 1"}, "lib/test_gem_require_a.rb" b1 = new_spec "b", "1", {"c" => "> 0"}, "lib/b/c.rb" c1 = new_spec "c", "1", nil, "lib/c/c.rb" c2 = new_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 ensure $LOAD_PATH.replace lp Object.send :remove_const, :HELLO if Object.const_defined? :HELLO end def test_concurrent_require skip 'deadlock' if /^1\.8\./ =~ RUBY_VERSION Object.const_set :FILE_ENTERED_LATCH, Latch.new(2) Object.const_set :FILE_EXIT_LATCH, Latch.new(1) a1 = new_spec "a", "1", nil, "lib/a.rb" b1 = new_spec "b", "1", nil, "lib/b.rb" install_specs a1, b1 append_latch a1 append_latch b1 t1 = Thread.new { assert_require 'a' } t2 = Thread.new { 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 return if $! # skipping Object.send :remove_const, :FILE_ENTERED_LATCH Object.send :remove_const, :FILE_EXIT_LATCH end def test_require_is_not_lazy_with_exact_req a1 = new_spec "a", "1", {"b" => "= 1"}, "lib/test_gem_require_a.rb" b1 = new_spec "b", "1", nil, "lib/b/c.rb" b2 = new_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 = new_spec "a", "1", {"b" => ">= 1"}, "lib/test_gem_require_a.rb" b1 = new_spec "b", "1", nil, "lib/b/c.rb" b2 = new_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 = new_spec "a", "1", {"b" => ">= 1"}, "lib/test_gem_require_a.rb" b1 = new_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 = new_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 a1 = new_spec "a", "1", {"b" => ">= 1"}, "lib/test_gem_require_a.rb" b1 = new_spec "b", "1", nil, "lib/benchmark.rb" b2 = new_spec "b", "2", nil, "lib/benchmark.rb" install_specs b1, b2, a1 require 'test_gem_require_a' assert_equal unresolved_names, ["b (>= 1)"] refute require('benchmark'), "benchmark should have already been loaded" # We detected that we should activate b-2, so we did so, but # then original_require decided "I've already got benchmark.rb" loaded. # This case is fine because our lazy loading is provided exactly # the same behavior as eager loading would have. assert_equal %w(a-1 b-2), loaded_spec_names end def test_already_activated_direct_conflict a1 = new_spec "a", "1", { "b" => "> 0" } b1 = new_spec "b", "1", { "c" => ">= 1" }, "lib/ib.rb" b2 = new_spec "b", "2", { "c" => ">= 2" }, "lib/ib.rb" c1 = new_spec "c", "1", nil, "lib/d.rb" c2 = new_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 = new_spec "a", "1", { "b" => "> 0", "x" => "> 0" } b1 = new_spec "b", "1", { "c" => ">= 1" }, "lib/ib.rb" b2 = new_spec "b", "2", { "c" => ">= 2" }, "lib/ib.rb" x1 = new_spec "x", "1", nil, "lib/ib.rb" x2 = new_spec "x", "2", nil, "lib/ib.rb" c1 = new_spec "c", "1", nil, "lib/d.rb" c2 = new_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_raises(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 = new_spec "a", "1", { "b" => "> 0" } b1 = new_spec "b", "1", { "c" => ">= 2" }, "lib/ib.rb" b2 = new_spec "b", "2", { "c" => ">= 3" }, "lib/ib.rb" c1 = new_spec "c", "1", nil, "lib/d.rb" c2 = new_spec "c", "2", nil, "lib/d.rb" c3 = new_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_raises(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 @default_dir, "#{b1.full_name}") FileUtils.rm_rf(File.join @default_spec_dir, "#{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 = new_spec("a", "1", nil, "lib/a.rb") z = new_spec("z", "1", "w" => "> 0") w1 = new_spec("w", "1") { |s| s.add_development_dependency "non-existent" } w2 = new_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_specs(default_gem_spec) assert_require "default/gem" assert_equal %w(default-2.0.0.0), loaded_spec_names 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_specs(default_gem_spec) normal_gem_spec = new_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 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_specs(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 = new_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 silence_warnings old_verbose, $VERBOSE = $VERBOSE, false yield ensure $VERBOSE = old_verbose end end