Class ActiveRecord::FixtureSet::ClassCache < Object

# File activerecord/lib/active_record/fixtures.rb, line 457
def initialize(class_names, config)
  @class_names = class_names.stringify_keys
  @config      = config

  # Remove string values that aren't constants or subclasses of AR
  @class_names.delete_if { |k,klass|
    unless klass.is_a? Class
      klass = klass.safe_constantize
      ActiveSupport::Deprecation.warn("The ability to pass in strings as a class name to `set_fixture_class` will be removed in Rails 4.2. Use the class itself instead.")
    end
    !insert_class(@class_names, k, klass)
  }
end

# File activerecord/lib/active_record/fixtures.rb, line 471
def [](fs_name)
  @class_names.fetch(fs_name) {
    klass = default_fixture_model(fs_name, @config).safe_constantize
    insert_class(@class_names, fs_name, klass)
  }
end