Need to install all of dependency for bundler test suite

Author: hsbt

common.mk

@@ -1601,7 +1601,8 @@ no-install-for-test-bundled-gems: no-update-default-gemspecs
 yes-install-for-test-bundled-gems: yes-update-default-gemspecs
 	$(XRUBY) -C "$(srcdir)" -r./tool/lib/gem_env.rb bin/gem \
 		install --no-document --conservative \
-		"hoe" "json-schema" "test-unit-rr" "simplecov" "simplecov-html" "simplecov-json" "rspec" "zeitwerk"
+		"hoe" "json-schema" "test-unit-rr" "simplecov" "simplecov-html" "simplecov-json" "rspec" "zeitwerk" \
+		"sinatra" "rack" "tilt" "mustermann" "base64" "compact_index" "rack-test"
 
 test-bundled-gems-fetch: yes-test-bundled-gems-fetch
 yes-test-bundled-gems-fetch:

spec/bundled_gems_spec.rb

@@ -27,6 +27,11 @@ def self.ruby=(ruby)
 
   config.around(:each) do |example|
     FileUtils.cp_r Spec::Path.pristine_system_gem_path, Spec::Path.system_gem_path
+    FileUtils.mkdir_p Spec::Path.base_system_gem_path.join("gems")
+    %w[sinatra rack tilt rack-protection rack-session rack-test mustermann base64 compact_index].each do |gem|
+      path = Dir[File.expand_path("../.bundle/gems/#{gem}-*", __dir__)].map(&:to_s).first
+      FileUtils.cp_r path, Spec::Path.base_system_gem_path.join("gems")
+    end
 
     with_gem_path_as(system_gem_path) do
       Bundler.ui.silence { example.run }