5 files changed, 32 insertions, 6 deletions
diff --git a/spec/bundler/runtime/inline_spec.rb b/spec/bundler/runtime/inline_spec.rb
index 9029c9b854..dd22c86f90 100644
--- a/spec/bundler/runtime/inline_spec.rb
+++ b/spec/bundler/runtime/inline_spec.rb
@@ -89,7 +89,7 @@ RSpec.describe "bundler/inline#gemfile" do
 
     expect(out).to include("Installing activesupport")
     err_lines = err.split("\n")
-    err_lines.reject!{|line| line =~ /\.rb:\d+: warning: / } unless RUBY_VERSION < "2.7"
+    err_lines.reject! {|line| line =~ /\.rb:\d+: warning: / } unless RUBY_VERSION < "2.7"
     expect(err_lines).to be_empty
   end
 
diff --git a/spec/bundler/spec_helper.rb b/spec/bundler/spec_helper.rb
index dce2939e83..23db133b67 100644
--- a/spec/bundler/spec_helper.rb
+++ b/spec/bundler/spec_helper.rb
@@ -113,6 +113,10 @@ RSpec.configure do |config|
     end
   end
 
+  config.before :each, :sudo => true do
+    Spec::Sudo.write_safe_config
+  end
+
   config.after :suite do
     FileUtils.rm_r Spec::Path.pristine_system_gem_path
   end
diff --git a/spec/bundler/support/path.rb b/spec/bundler/support/path.rb
index 41b36997b2..a39e46c78a 100644
--- a/spec/bundler/support/path.rb
+++ b/spec/bundler/support/path.rb
@@ -258,6 +258,10 @@ module Spec
       end
     end
 
+    def git_root
+      ruby_core? ? source_root : source_root.parent
+    end
+
     private
 
     def git_ls_files(glob)
@@ -278,10 +282,6 @@ module Spec
       ruby_core? ? "man/bundle* man/gemfile*" : "lib/bundler/man/bundle*.1 lib/bundler/man/gemfile*.5"
     end
 
-    def git_root
-      ruby_core? ? source_root : source_root.parent
-    end
-
     def ruby_core_tarball?
       !git_root.join(".git").directory?
     end
diff --git a/spec/bundler/support/rubygems_ext.rb b/spec/bundler/support/rubygems_ext.rb
index fd5f06b14f..eb7e321080 100644
--- a/spec/bundler/support/rubygems_ext.rb
+++ b/spec/bundler/support/rubygems_ext.rb
@@ -18,6 +18,12 @@ module Spec
       gem_load_and_activate(gem_name, bin_container)
     end
 
+    def gem_load_and_possibly_install(gem_name, bin_container)
+      require_relative "switch_rubygems"
+
+      gem_load_activate_and_possibly_install(gem_name, bin_container)
+    end
+
     def gem_require(gem_name)
       gem_activate(gem_name)
       require gem_name
@@ -99,9 +105,21 @@ module Spec
       abort "We couldn't activate #{gem_name} (#{e.requirement}). Run `gem install #{gem_name}:'#{e.requirement}'`"
     end
 
+    def gem_load_activate_and_possibly_install(gem_name, bin_container)
+      gem_activate_and_possibly_install(gem_name)
+      load Gem.bin_path(gem_name, bin_container)
+    end
+
+    def gem_activate_and_possibly_install(gem_name)
+      gem_activate(gem_name)
+    rescue Gem::LoadError => e
+      Gem.install(gem_name, e.requirement)
+      retry
+    end
+
     def gem_activate(gem_name)
       require "bundler"
-      gem_requirement = Bundler::LockfileParser.new(File.read(dev_lockfile)).dependencies[gem_name]&.requirement
+      gem_requirement = Bundler::LockfileParser.new(File.read(dev_lockfile)).specs.find {|spec| spec.name == gem_name }.version
       gem gem_name, gem_requirement
     end
 
diff --git a/spec/bundler/support/sudo.rb b/spec/bundler/support/sudo.rb
index 04e9443945..7b9b392754 100644
--- a/spec/bundler/support/sudo.rb
+++ b/spec/bundler/support/sudo.rb
@@ -6,6 +6,10 @@ module Spec
       @which_sudo ||= Bundler.which("sudo")
     end
 
+    def self.write_safe_config
+      File.write(Spec::Path.tmp("gitconfig"), "[safe]\n\tdirectory = #{Spec::Path.git_root}")
+    end
+
     def sudo(cmd)
       raise "sudo not present" unless Sudo.present?
       sys_exec("sudo #{cmd}")