RubyMine reporter provides file URL. Jump to test fixed

RUBY-16613 minitest failure result nodes need "jump to test" functionality

lib/minitest/reporters/rubymine_reporter.rb

@@ -88,8 +88,8 @@ def after_suite(suite)
 
         def before_test(test)
           super
-          fqn = "#{test.class.name}.#{test.name}"
-          log(@message_factory.create_test_started(test.name, minitest_test_location(fqn)))
+          location = test.class.instance_method(test.name).source_location
+          log(@message_factory.create_test_started(test.name, "file://#{location[0]}:#{location[1]}"))
         end
 
         #########
@@ -102,11 +102,6 @@ def log(msg)
           msg
         end
 
-        def minitest_test_location(fqn)
-          return nil if (fqn.nil?)
-          "ruby_minitest_qn://#{fqn}"
-        end
-
         def with_result(test)
           exception = test.failure
           msg = exception.nil? ? "" : "#{exception.class.name}: #{exception.message}"