test: fix invalid XML

kou · kou · commit e86516510fd7 · 2021-02-23T15:56:12.000+09:00
DOCTYPE needs SYSTEM before system literal.
diff --git a/test/test_core.rb b/test/test_core.rb
@@ -1041,7 +1041,7 @@ def test_write_doctype
       document.write(s)
 
       ## XML Doctype
-      str = '<!DOCTYPE foo "bar">'
+      str = '<!DOCTYPE foo SYSTEM "bar">'
       source  = REXML::Source.new(str)
       doctype = REXML::DocType.new(source)
       document.add(doctype)
