[rubygems/rubygems] Better approach to falling back to user installation when GEM_HOME not writable

https://github.com/rubygems/rubygems/commit/f67bced16b

1 files changed, 20 insertions, 0 deletions

diff --git a/test/rubygems/test_gem_installer.rb b/test/rubygems/test_gem_installer.rb
index a00814370f..03903ff9d3 100644
--- a/test/rubygems/test_gem_installer.rb
+++ b/test/rubygems/test_gem_installer.rb
@@ -1955,6 +1955,26 @@ end
     assert_equal "  Plugins dir: #{plugins_dir}", errors.shift
   end
 
+  def test_process_options_fallback_to_user_install_when_gem_home_not_writable
+    if Process.uid.zero?
+      pend("skipped in root privilege")
+      return
+    end
+
+    orig_gem_home = ENV.delete("GEM_HOME")
+
+    @gem = setup_base_gem
+
+    FileUtils.chmod 0o000, @gemhome
+
+    use_ui(@ui) { Gem::Installer.at @gem }
+
+    assert_equal "Defaulting to user installation because default installation directory (#{@gemhome}) is not writable.", @ui.output.strip
+  ensure
+    FileUtils.chmod 0o755, @gemhome
+    ENV["GEM_HOME"] = orig_gem_home
+  end
+
   def test_shebang_arguments
     load_relative "no" do
       installer = setup_base_installer