===

# File railties/lib/rails/test_unit/runner.rb, line 168
      def ===(method)
        return unless @runnable.method_defined?(method)

        if @line_range
          test_file, test_range = definition_for(@runnable.instance_method(method))
          test_file == @file && @line_range.overlaps?(test_range)
        else
          @runnable.instance_method(method).source_location.first == @file
        end
      end