Change include order for test assertions

Author: hsbt

tool/lib/core_assertions.rb

@@ -269,7 +269,7 @@ def assert_separately(args, file = nil, line = nil, src, ignore_stderr: nil, **o
         src = <<eom
 # -*- coding: #{line += __LINE__; src.encoding}; -*-
 BEGIN {
-  require "test/unit";include Test::Unit::Assertions;require #{__FILE__.dump};include Test::Unit::CoreAssertions
+  require "test/unit";include Test::Unit::Assertions;include Test::Unit::CoreAssertions;require #{__FILE__.dump}
   separated_runner #{res_c&.fileno}
 }
 #{line -= __LINE__; src}