[ruby/rubygems] Cover required_ruby_version and required_rubygems_version overrides

Add integration coverage exercising :ignore_upper and nil overrides
against per-gem metadata fields, transitive propagation, and lockfile
re-resolution when a metadata override is added against an existing
lockfile. The cases drive `bundle lock` so they exercise the resolver
without RubyGems' install-time required_ruby_version gate, which is
addressed in a later step.

https://github.com/ruby/rubygems/commit/ec3a549df7

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

1 files changed, 102 insertions, 0 deletions

diff --git a/spec/bundler/install/gemfile/override_spec.rb b/spec/bundler/install/gemfile/override_spec.rb
index 410bf96737..20e812a553 100644
--- a/spec/bundler/install/gemfile/override_spec.rb
+++ b/spec/bundler/install/gemfile/override_spec.rb
@@ -141,4 +141,106 @@ RSpec.describe "override DSL" do
       expect(lockfile).not_to match(/override/i)
     end
   end
+
+  context "with a required_ruby_version: operation" do
+    it "lets the resolver pick a gem whose required_ruby_version excludes the current Ruby with :ignore_upper" do
+      build_repo2 do
+        build_gem "needs_old_ruby", "1.0" do |s|
+          s.required_ruby_version = "< #{Gem.ruby_version}"
+        end
+      end
+
+      gemfile <<-G
+        source "https://gem.repo2"
+        override "needs_old_ruby", required_ruby_version: :ignore_upper
+        gem "needs_old_ruby"
+      G
+
+      bundle :lock
+      expect(lockfile).to include("needs_old_ruby (1.0)")
+    end
+
+    it "lets the resolver pick the gem with required_ruby_version: nil" do
+      build_repo2 do
+        build_gem "needs_old_ruby", "1.0" do |s|
+          s.required_ruby_version = "< #{Gem.ruby_version}"
+        end
+      end
+
+      gemfile <<-G
+        source "https://gem.repo2"
+        override "needs_old_ruby", required_ruby_version: nil
+        gem "needs_old_ruby"
+      G
+
+      bundle :lock
+      expect(lockfile).to include("needs_old_ruby (1.0)")
+    end
+
+    it "applies to a transitive dependency's required_ruby_version" do
+      build_repo2 do
+        build_gem "needs_old_ruby", "1.0" do |s|
+          s.required_ruby_version = "< #{Gem.ruby_version}"
+        end
+        build_gem "wraps_old", "1.0" do |s|
+          s.add_dependency "needs_old_ruby"
+        end
+      end
+
+      gemfile <<-G
+        source "https://gem.repo2"
+        override "needs_old_ruby", required_ruby_version: :ignore_upper
+        gem "wraps_old"
+      G
+
+      bundle :lock
+      expect(lockfile).to include("needs_old_ruby (1.0)")
+      expect(lockfile).to include("wraps_old (1.0)")
+    end
+
+    it "re-resolves a direct dep when a metadata override is added against an existing lockfile" do
+      build_repo2 do
+        build_gem "selectable", "1.0"
+        build_gem "selectable", "2.0" do |s|
+          s.required_ruby_version = "< #{Gem.ruby_version}"
+        end
+      end
+
+      gemfile <<-G
+        source "https://gem.repo2"
+        gem "selectable"
+      G
+
+      bundle :lock
+      expect(lockfile).to include("selectable (1.0)")
+
+      gemfile <<-G
+        source "https://gem.repo2"
+        override "selectable", required_ruby_version: :ignore_upper
+        gem "selectable"
+      G
+
+      bundle :lock
+      expect(lockfile).to include("selectable (2.0)")
+    end
+  end
+
+  context "with a required_rubygems_version: operation" do
+    it "lets the resolver pick a gem whose required_rubygems_version excludes the current RubyGems with :ignore_upper" do
+      build_repo2 do
+        build_gem "needs_old_rubygems", "1.0" do |s|
+          s.required_rubygems_version = "< #{Gem.rubygems_version}"
+        end
+      end
+
+      gemfile <<-G
+        source "https://gem.repo2"
+        override "needs_old_rubygems", required_rubygems_version: :ignore_upper
+        gem "needs_old_rubygems"
+      G
+
+      bundle :lock
+      expect(lockfile).to include("needs_old_rubygems (1.0)")
+    end
+  end
 end