Port -r option test to RSpec examples

Merged: https://github.com/ruby/ruby/pull/12096

spec/bundler/bundled_gems_spec.rb

@@ -88,6 +88,13 @@ RSpec.describe "bundled_gems.rb" do
     expect(err).to include(/ostruct was loaded from (.*) from Ruby 3.5.0/)
   end
 
+  it "Show warning when bundle exec with -r option" do
+    create_file("Gemfile", "source 'https://rubygems.org'")
+    bundle "exec ruby -rostruct -e ''"
+
+    expect(err).to include(/ostruct was loaded from (.*) from Ruby 3.5.0/)
+  end
+
   it "Show warning when warn is not the standard one in the current scope" do
     script <<-RUBY
       module My
@@ -152,4 +159,12 @@ RSpec.describe "bundled_gems.rb" do
 
     expect(err).to be_empty
   end
+
+  it "Don't show warning for reline when using irb from standard library" do
+    create_file("Gemfile", "source 'https://rubygems.org'")
+    bundle "exec ruby -rirb -e ''"
+
+    expect(err).to include(/irb was loaded from (.*) from Ruby 3.5.0/)
+    expect(err).to_not include(/reline was loaded from (.*) from Ruby 3.5.0/)
+  end
 end

tool/test_for_warn_bundled_gems/Gemfile.lock

@@ -1,11 +0,0 @@
-GEM
-  specs:
-
-PLATFORMS
-  arm64-darwin-22
-  ruby
-
-DEPENDENCIES
-
-BUNDLED WITH
-   2.5.0.dev

tool/test_for_warn_bundled_gems/test.sh

@@ -4,10 +4,6 @@ echo "* Show warning sub-feature like bigdecimal/util"
 ruby test_warn_sub_feature.rb
 echo
 
-echo "* Show warning when bundle exec with -r option"
-bundle exec ruby -rostruct -e ''
-echo
-
 echo "* Show warning with bootsnap"
 ruby test_warn_bootsnap.rb
 echo
@@ -27,7 +23,3 @@ echo
 echo "* Show warning with bootsnap and some gem in Gemfile"
 ruby test_warn_bootsnap_and_gem.rb
 echo
-
-echo "* Don't show warning for reline when using irb from standard library"
-bundle exec ruby -rirb -e ''
-echo