1 files changed, 28 insertions, 0 deletions
diff --git a/activesupport/test/dependencies_test_helpers.rb b/activesupport/test/dependencies_test_helpers.rb
new file mode 100644
index 0000000000..e4d5197112
--- /dev/null
+++ b/activesupport/test/dependencies_test_helpers.rb
@@ -0,0 +1,28 @@
+module DependenciesTestHelpers
+  def with_loading(*from)
+    old_mechanism, ActiveSupport::Dependencies.mechanism = ActiveSupport::Dependencies.mechanism, :load
+    this_dir = File.dirname(__FILE__)
+    parent_dir = File.dirname(this_dir)
+    path_copy = $LOAD_PATH.dup
+    $LOAD_PATH.unshift(parent_dir) unless $LOAD_PATH.include?(parent_dir)
+    prior_autoload_paths = ActiveSupport::Dependencies.autoload_paths
+    ActiveSupport::Dependencies.autoload_paths = from.collect { |f| "#{this_dir}/#{f}" }
+    yield
+  ensure
+    $LOAD_PATH.replace(path_copy)
+    ActiveSupport::Dependencies.autoload_paths = prior_autoload_paths
+    ActiveSupport::Dependencies.mechanism = old_mechanism
+    ActiveSupport::Dependencies.explicitly_unloadable_constants = []
+    ActiveSupport::Dependencies.clear
+  end
+
+  def with_autoloading_fixtures(&block)
+    with_loading 'autoloading_fixtures', &block
+  end
+
+  def remove_constants(*constants)
+    constants.each do |constant|
+      Object.send(:remove_const, constant) if Object.const_defined?(constant)
+    end
+  end
+end
+\ No newline at end of file