1 files changed, 41 insertions, 0 deletions
diff --git a/spec/ruby/fixtures/code_loading.rb b/spec/ruby/fixtures/code_loading.rb
new file mode 100644
index 0000000000..decd56a358
--- /dev/null
+++ b/spec/ruby/fixtures/code_loading.rb
@@ -0,0 +1,41 @@
+module CodeLoadingSpecs
+  # The #require instance method is private, so this class enables
+  # calling #require like obj.require(file). This is used to share
+  # specs between Kernel#require and Kernel.require.
+  class Method
+    def require(name)
+      super name
+    end
+
+    def load(name, wrap=false)
+      super
+    end
+  end
+
+  def self.preload_rubygems
+    # Require RubyGems eagerly, to ensure #require is already the RubyGems
+    # version and RubyGems is only loaded once, before starting #require/#autoload specs
+    # which snapshot $LOADED_FEATURES and could cause RubyGems to load twice.
+    # #require specs also snapshot #require, and could end up redefining #require as the original core Kernel#require.
+    @rubygems ||= begin
+      require "rubygems"
+      true
+    rescue LoadError
+      true
+    end
+  end
+
+  def self.spec_setup
+    preload_rubygems
+
+    @saved_loaded_features = $LOADED_FEATURES.clone
+    @saved_load_path = $LOAD_PATH.clone
+    ScratchPad.record []
+  end
+
+  def self.spec_cleanup
+    $LOADED_FEATURES.replace @saved_loaded_features
+    $LOAD_PATH.replace @saved_load_path
+    ScratchPad.clear
+  end
+end