https://git.ruby-lang.org/ruby.git/commit/?id=ac56e5c1ab

From ac56e5c1ab6eb133102c395f63101060bad6725d Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?David=20Rodr=C3=ADguez?= <deivid.rodriguez@r...>
Date: Sat, 4 Dec 2021 13:44:07 +0100
Subject: [rubygems/rubygems] Put bundler gemspec stub at the right place

So that it's found when needed, rather than dynamically modifying
loaded stubs and thus messing with RubyGems internals.

https://github.com/rubygems/rubygems/commit/cd3e7cb9e5
---
 test/rubygems/test_gem.rb | 53 +++++++++++++++++++++++++----------------------
 1 file changed, 28 insertions(+), 25 deletions(-)

diff --git a/test/rubygems/test_gem.rb b/test/rubygems/test_gem.rb
index 02d128f352..f4c6e8ce76 100644
--- a/test/rubygems/test_gem.rb
+++ b/test/rubygems/test_gem.rb
@@ -615,7 +615,7 @@ class TestGem < Gem::TestCase https://github.com/ruby/ruby/blob/trunk/test/rubygems/test_gem.rb#L615
   end
 
   def test_self_use_gemdeps
-    with_local_bundler do
+    with_local_bundler_at(Gem.dir) do
       with_rubygems_gemdeps("-") do
         FileUtils.mkdir_p "detect/a/b"
         FileUtils.mkdir_p "detect/a/Isolate"
@@ -775,7 +775,7 @@ class TestGem < Gem::TestCase https://github.com/ruby/ruby/blob/trunk/test/rubygems/test_gem.rb#L775
   end
 
   def test_self_find_files_with_gemfile
-    with_local_bundler do
+    with_local_bundler_at(Gem.dir) do
       cwd = File.expand_path("test/rubygems", PROJECT_DIR)
       actual_load_path = $LOAD_PATH.unshift(cwd).dup
 
@@ -1635,7 +1635,7 @@ class TestGem < Gem::TestCase https://github.com/ruby/ruby/blob/trunk/test/rubygems/test_gem.rb#L1635
   end
 
   def test_auto_activation_of_specific_gemdeps_file
-    with_local_bundler do
+    with_local_bundler_at(Gem.dir) do
       a = util_spec "a", "1", nil, "lib/a.rb"
       b = util_spec "b", "1", nil, "lib/b.rb"
       c = util_spec "c", "1", nil, "lib/c.rb"
@@ -1659,7 +1659,7 @@ class TestGem < Gem::TestCase https://github.com/ruby/ruby/blob/trunk/test/rubygems/test_gem.rb#L1659
   end
 
   def test_auto_activation_of_used_gemdeps_file
-    with_local_bundler do
+    with_local_bundler_at(Gem.dir) do
       a = util_spec "a", "1", nil, "lib/a.rb"
       b = util_spec "b", "1", nil, "lib/b.rb"
       c = util_spec "c", "1", nil, "lib/c.rb"
@@ -1691,7 +1691,9 @@ class TestGem < Gem::TestCase https://github.com/ruby/ruby/blob/trunk/test/rubygems/test_gem.rb#L1691
   end
 
   def test_looks_for_gemdeps_files_automatically_from_binstubs
-    with_local_bundler do
+    path = File.join(@tempdir, "gd-tmp")
+
+    with_local_bundler_at(path) do
       a = util_spec "a", "1" do |s|
         s.executables = %w[foo]
         s.bindir = "exe"
@@ -1706,7 +1708,6 @@ class TestGem < Gem::TestCase https://github.com/ruby/ruby/blob/trunk/test/rubygems/test_gem.rb#L1708
 
       install_specs a, b, c
 
-      path = File.join(@tempdir, "gd-tmp")
       install_gem a, :install_dir => path
       install_gem b, :install_dir => path
       install_gem c, :install_dir => path
@@ -1740,7 +1741,9 @@ class TestGem < Gem::TestCase https://github.com/ruby/ruby/blob/trunk/test/rubygems/test_gem.rb#L1741
   end
 
   def test_looks_for_gemdeps_files_automatically_from_binstubs_in_parent_dir
-    with_local_bundler do
+    path = File.join(@tempdir, "gd-tmp")
+
+    with_local_bundler_at(path) do
       pend "IO.popen has issues on JRuby when passed :chdir" if Gem.java_platform?
 
       a = util_spec "a", "1" do |s|
@@ -1757,7 +1760,6 @@ class TestGem < Gem::TestCase https://github.com/ruby/ruby/blob/trunk/test/rubygems/test_gem.rb#L1760
 
       install_specs a, b, c
 
-      path = File.join(@tempdir, "gd-tmp")
       install_gem a, :install_dir => path
       install_gem b, :install_dir => path
       install_gem c, :install_dir => path
@@ -1835,7 +1837,7 @@ class TestGem < Gem::TestCase https://github.com/ruby/ruby/blob/trunk/test/rubygems/test_gem.rb#L1837
   end
 
   def test_use_gemdeps
-    with_local_bundler do
+    with_local_bundler_at(Gem.dir) do
       gem_deps_file = "gem.deps.rb".tap(&Gem::UNTAINT)
       spec = util_spec "a", 1
       install_specs spec
@@ -1857,7 +1859,7 @@ class TestGem < Gem::TestCase https://github.com/ruby/ruby/blob/trunk/test/rubygems/test_gem.rb#L1859
   end
 
   def test_use_gemdeps_ENV
-    with_local_bundler do
+    with_local_bundler_at(Gem.dir) do
       with_rubygems_gemdeps(nil) do
         spec = util_spec "a", 1
 
@@ -1875,7 +1877,7 @@ class TestGem < Gem::TestCase https://github.com/ruby/ruby/blob/trunk/test/rubygems/test_gem.rb#L1877
   end
 
   def test_use_gemdeps_argument_missing
-    with_local_bundler do
+    with_local_bundler_at(Gem.dir) do
       e = assert_raise ArgumentError do
         Gem.use_gemdeps "gem.deps.rb"
       end
@@ -1886,7 +1888,7 @@ class TestGem < Gem::TestCase https://github.com/ruby/ruby/blob/trunk/test/rubygems/test_gem.rb#L1888
   end
 
   def test_use_gemdeps_argument_missing_match_ENV
-    with_local_bundler do
+    with_local_bundler_at(Gem.dir) do
       with_rubygems_gemdeps("gem.deps.rb") do
         e = assert_raise ArgumentError do
           Gem.use_gemdeps "gem.deps.rb"
@@ -1899,7 +1901,7 @@ class TestGem < Gem::TestCase https://github.com/ruby/ruby/blob/trunk/test/rubygems/test_gem.rb#L1901
   end
 
   def test_use_gemdeps_automatic
-    with_local_bundler do
+    with_local_bundler_at(Gem.dir) do
       with_rubygems_gemdeps("-") do
         spec = util_spec "a", 1
         install_specs spec
@@ -1919,7 +1921,7 @@ class TestGem < Gem::TestCase https://github.com/ruby/ruby/blob/trunk/test/rubygems/test_gem.rb#L1921
   end
 
   def test_use_gemdeps_automatic_missing
-    with_local_bundler do
+    with_local_bundler_at(Gem.dir) do
       with_rubygems_gemdeps("-") do
         Gem.use_gemdeps
 
@@ -1929,7 +1931,7 @@ class TestGem < Gem::TestCase https://github.com/ruby/ruby/blob/trunk/test/rubygems/test_gem.rb#L1931
   end
 
   def test_use_gemdeps_disabled
-    with_local_bundler do
+    with_local_bundler_at(Gem.dir) do
       with_rubygems_gemdeps("") do
         spec = util_spec "a", 1
 
@@ -1947,7 +1949,7 @@ class TestGem < Gem::TestCase https://github.com/ruby/ruby/blob/trunk/test/rubygems/test_gem.rb#L1949
   end
 
   def test_use_gemdeps_missing_gem
-    with_local_bundler do
+    with_local_bundler_at(Gem.dir) do
       with_rubygems_gemdeps("x") do
         File.open "x", "w" do |io|
           io.write 'gem "a"'
@@ -1971,7 +1973,7 @@ You may need to `bundle install` to install missing gems https://github.com/ruby/ruby/blob/trunk/test/rubygems/test_gem.rb#L1973
   end
 
   def test_use_gemdeps_specific
-    with_local_bundler do
+    with_local_bundler_at(Gem.dir) do
       with_rubygems_gemdeps("x") do
         spec = util_spec "a", 1
         install_specs spec
@@ -2121,17 +2123,18 @@ You may need to `bundle install` to install missing gems https://github.com/ruby/ruby/blob/trunk/test/rubygems/test_gem.rb#L2123
     ENV["RUBYGEMS_GEMDEPS"] = rubygems_gemdeps
   end
 
-  def with_local_bundler
-    # If bundler gemspec exists, add to stubs
+  def with_local_bundler_at(path)
+    require "bundler"
+
+    # If bundler gemspec exists, pretend it's installed
     bundler_gemspec = File.expand_path("../../bundler/bundler.gemspec", __dir__)
     if File.exist?(bundler_gemspec)
-      Gem::Specification.dirs.unshift File.dirname(bundler_gemspec)
-      Gem::Specification.class_variable_set :@@stubs, nil
-      Gem::Specification.stubs
-      Gem::Specification.dirs.shift
-    end
+      target_gemspec_location = "#{path}/specifications/bundler-#{Bundler::VERSION}.gemspec"
 
-    require "bundler"
+      FileUtils.mkdir_p File.dirname(target_gemspec_location)
+
+      File.write target_gemspec_location, Gem::Specification.load(bundler_gemspec).to_ruby_for_cache
+    end
 
     yield
   ensure
-- 
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