test: add test-charmap.py

nodejs/node-gyp#1335
Reviewed-By: Refael Ackermann <refack@gmail.com>

test/fixtures/test-charmap.py

@@ -0,0 +1,23 @@
+from __future__ import print_function
+import sys
+import locale
+
+reload(sys)
+
+def main():
+  encoding = locale.getdefaultlocale()[1]
+  if not encoding:
+    return False
+
+  sys.setdefaultencoding(encoding)
+  textmap = {
+    'cp936': u'\u4e2d\u6587',
+    'cp1252': u'Lat\u012Bna',
+    'cp932': u'\u306b\u307b\u3093\u3054'
+  }
+  if encoding in textmap:
+    print(textmap[encoding])
+  return True
+
+if __name__ == '__main__':
+  print(main())