Don't raise on Post.tags if Post.raw_content is None

Fixes #17

CHANGELOG.md

@@ -3,6 +3,9 @@
 ### Changed
 - Test factories and other test files are now included in the package installation. Factories can be useful when creating project tests.
 
+### Fixes
+- Don't raise on Post.tags if Post.raw_content is None
+
 ## [0.3.1] - 2016-04-13
 
 ### Added

federation/entities/base.py

@@ -83,6 +83,8 @@ class RawContentMixin(BaseEntity):
     @property
     def tags(self):
         """Returns a `set` of unique tags contained in `raw_content`."""
+        if not self.raw_content:
+            return set()
         return set({word.strip("#") for word in self.raw_content.split() if word.startswith("#")})
 
 

federation/tests/entities/test_base.py

@@ -12,6 +12,10 @@ class TestPostEntityTags(object):
         post = TaggedPostFactory()
         assert post.tags == {"tagone", "tagtwo", "tagthree"}
 
+    def test_post_entity_without_raw_content_tags_returns_empty_set(self):
+        post = PostFactory(raw_content=None)
+        assert post.tags == set()
+
 
 class TestBaseEntityCallsValidateMethods(object):
     def test_entity_calls_attribute_validate_method(self):