Split metadata validators in validators and parsers. Move document and upload wizard metadata validation logic to model. Add metadata tests.

mayan/apps/metadata/validators.py

@@ -2,42 +2,33 @@ from __future__ import unicode_literals
 
 from dateutil.parser import parse
 
+from django.core.exceptions import ValidationError
 
-class MetadataValidator(object):
+from .parsers import MetadataParser
+
+
+class MetadataValidator(MetadataParser):
     _registry = []
 
-    @classmethod
-    def register(cls, parser):
-        cls._registry.append(parser)
-
-    @classmethod
-    def get_all(cls):
-        return cls._registry
-
-    @classmethod
-    def get_import_path(cls):
-        return cls.__module__ + '.' + cls.__name__
-
-    @classmethod
-    def get_import_paths(cls):
-        return [validator.get_import_path() for validator in cls.get_all()]
-
-    def parse(self, input_data):
-        raise NotImplementedError
+    def validate(self, input_data):
+        try:
+            self.execute(input_data)
+        except Exception as exception:
+            raise ValidationError(exception)
 
 
 class DateAndTimeValidator(MetadataValidator):
-    def validate(self, input_data):
+    def execute(self, input_data):
         return parse(input_data).isoformat()
 
 
 class DateValidator(MetadataValidator):
-    def validate(self, input_data):
+    def execute(self, input_data):
         return parse(input_data).date().isoformat()
 
 
 class TimeValidator(MetadataValidator):
-    def validate(self, input_data):
+    def execute(self, input_data):
         return parse(input_data).time().isoformat()