1 files changed, 37 insertions, 32 deletions

diff --git a/spec/bundler/support/rubygems_ext.rb b/spec/bundler/support/rubygems_ext.rb
index 59429884d6..ea774429c9 100644
--- a/spec/bundler/support/rubygems_ext.rb
+++ b/spec/bundler/support/rubygems_ext.rb
@@ -9,7 +9,7 @@ module Spec
     extend self
 
     def dev_setup
-      install_gems(dev_gemfile, dev_lockfile)
+      install_gems(dev_gemfile)
     end
 
     def gem_load(gem_name, bin_container)
@@ -33,25 +33,25 @@ module Spec
 
       ENV["HOME"] = Path.home.to_s
       ENV["TMPDIR"] = Path.tmpdir.to_s
-      ENV["XDG_CONFIG_HOME"] = Path.xdg_config_home.to_s
 
       require "rubygems/user_interaction"
       Gem::DefaultUserInteraction.ui = Gem::SilentUI.new
     end
 
     def install_parallel_test_deps
+      Gem.clear_paths
+
       require "parallel"
+      require "fileutils"
 
-      prev_env_test_number = ENV["TEST_ENV_NUMBER"]
+      install_test_deps
 
-      begin
-        Parallel.processor_count.times do |n|
-          ENV["TEST_ENV_NUMBER"] = (n + 1).to_s
+      (2..Parallel.processor_count).each do |n|
+        source = Path.source_root.join("tmp", "1")
+        destination = Path.source_root.join("tmp", n.to_s)
 
-          install_test_deps
-        end
-      ensure
-        ENV["TEST_ENV_NUMBER"] = prev_env_test_number
+        FileUtils.rm_rf destination
+        FileUtils.cp_r source, destination
       end
     end
 
@@ -67,9 +67,9 @@ module Spec
     def install_test_deps
       setup_test_paths
 
-      workaround_loaded_specs_issue
-
-      install_gems(test_gemfile, test_lockfile)
+      install_gems(test_gemfile)
+      install_gems(rubocop_gemfile, Path.rubocop_gems.to_s)
+      install_gems(standard_gemfile, Path.standard_gems.to_s)
     end
 
     def check_source_control_changes(success_message:, error_message:)
@@ -94,18 +94,6 @@ module Spec
 
     private
 
-    # Some rubygems versions include loaded specs when loading gemspec stubs
-    # from the file system. In this situation, that makes bundler incorrectly
-    # assume that `rake` is already installed at `tmp/` because it's installed
-    # globally, and makes it skip installing it to the proper location for our
-    # tests. To workaround, we remove `rake` from the loaded specs when running
-    # under those versions, so that `bundler` does the right thing.
-    def workaround_loaded_specs_issue
-      current_rubygems_version = Gem::Version.new(Gem::VERSION)
-
-      Gem.loaded_specs.delete("rake") if current_rubygems_version >= Gem::Version.new("3.0.0.beta2") && current_rubygems_version < Gem::Version.new("3.2.0")
-    end
-
     def gem_load_and_activate(gem_name, bin_container)
       gem_activate(gem_name)
       load Gem.bin_path(gem_name, bin_container)
@@ -119,14 +107,27 @@ module Spec
       gem gem_name, gem_requirement
     end
 
-    def install_gems(gemfile, lockfile)
+    def install_gems(gemfile, path = nil)
       old_gemfile = ENV["BUNDLE_GEMFILE"]
       ENV["BUNDLE_GEMFILE"] = gemfile.to_s
-      require "bundler"
-      definition = Bundler::Definition.build(gemfile, lockfile, nil)
-      definition.validate_runtime!
-      Bundler::Installer.install(Path.source_root, definition, :path => ENV["GEM_HOME"])
+
+      if path
+        old_path = ENV["BUNDLE_PATH"]
+        ENV["BUNDLE_PATH"] = path
+      else
+        old_path__system = ENV["BUNDLE_PATH__SYSTEM"]
+        ENV["BUNDLE_PATH__SYSTEM"] = "true"
+      end
+
+      output = `#{Gem.ruby} #{File.expand_path("support/bundle.rb", Path.spec_dir)} install`
+      raise "Error when installing gems in #{gemfile}: #{output}" unless $?.success?
     ensure
+      if path
+        ENV["BUNDLE_PATH"] = old_path
+      else
+        ENV["BUNDLE_PATH__SYSTEM"] = old_path__system
+      end
+
       ENV["BUNDLE_GEMFILE"] = old_gemfile
     end
 
@@ -134,8 +135,12 @@ module Spec
       Path.test_gemfile
     end
 
-    def test_lockfile
-      lockfile_for(test_gemfile)
+    def rubocop_gemfile
+      Path.rubocop_gemfile
+    end
+
+    def standard_gemfile
+      Path.standard_gemfile
     end
 
     def dev_gemfile