Add more typing and use mypy in the CI

1 files changed, 4 insertions, 3 deletions

diff --git a/libmat2/harmless.py b/libmat2/harmless.py
index a63407f..d25603b 100644
--- a/libmat2/harmless.py
+++ b/libmat2/harmless.py
@@ -1,17 +1,18 @@
+from typing import Dict
 from . import abstract
 
 
 class HarmlessParser(abstract.AbstractParser):
     """ This is the parser for filetypes that do not contain metadata. """
-    mimetypes = {'application/xml', 'text/plain'}
+    mimetypes = {'application/xml', 'text/plain', 'application/rdf+xml'}
 
     def __init__(self, filename: str) -> None:
         super().__init__(filename)
         self.filename = filename
         self.output_filename = filename
 
-    def get_meta(self):
+    def get_meta(self) -> Dict[str, str]:
         return dict()
 
-    def remove_all(self):
+    def remove_all(self) -> bool:
         return True