Delete AS::Dependencies.depend_on

activesupport/lib/active_support/dependencies.rb

@@ -301,21 +301,6 @@ def load?
       mechanism == :load
     end
 
-    def depend_on(file_name, message = "No such file to load -- %s.rb")
-      path = search_for_file(file_name)
-      require_or_load(path || file_name)
-    rescue LoadError => load_error
-      if file_name = load_error.message[/ -- (.*?)(\.rb)?$/, 1]
-        load_error_message = if load_error.respond_to?(:original_message)
-          load_error.original_message
-        else
-          load_error.message
-        end
-        load_error_message.replace(message % file_name)
-      end
-      raise
-    end
-
     def clear
       Dependencies.unload_interlock do
         loaded.clear

activesupport/test/dependencies_test.rb

@@ -28,24 +28,6 @@ class DependenciesTest < ActiveSupport::TestCase
     $LOAD_PATH.pop
   end
 
-  def test_depend_on_path
-    expected = assert_raises(LoadError) do
-      Kernel.require "omgwtfbbq"
-    end
-
-    e = assert_raises(LoadError) do
-      ActiveSupport::Dependencies.depend_on "omgwtfbbq"
-    end
-    assert_equal expected.path, e.path
-  end
-
-  def test_depend_on_message
-    e = assert_raises(LoadError) do
-      ActiveSupport::Dependencies.depend_on "omgwtfbbq"
-    end
-    assert_equal "No such file to load -- omgwtfbbq.rb", e.message
-  end
-
   def test_smart_name_error_strings
     e = assert_raise NameError do
       Object.module_eval "ImaginaryObject"