Description_string now only allows strings

kittengroomer/helpers.py

@@ -88,6 +88,21 @@ class FileBase(object):
         else:
             return True
 
+    @property
+    def description_string(self):
+        return self.__description_string
+
+    @description_string.setter
+    def description_string(self, value):
+        if hasattr(self, 'description_string'):
+            if isinstance(value, str):
+                if value not in self.__description_string:
+                    self.__description_string.append(value)
+            else:
+                raise TypeError("Description_string can only include strings")
+        else:
+            self.__description_string = value
+
     def set_property(self, prop_string, value):
         """
         Take a property and a value and add them to the file's stored props.
@@ -99,11 +114,7 @@ class FileBase(object):
         if hasattr(self, prop_string):
             setattr(self, prop_string, value)
         else:
-            if prop_string is 'description_string':
-                if value not in self.description_string:
-                    self.description_string.append(value)
-            else:
-                self._user_defined[prop_string] = value
+            self._user_defined[prop_string] = value
 
     def get_property(self, prop_string):
         """

tests/test_kittengroomer.py

@@ -44,8 +44,15 @@ class TestFileBase:
         return FileBase(file_path, dst_dir_path)
 
     @fixture
-    def file_marked_dangerous(self):
-        pass
+    def text_file(self):
+        with mock.patch(
+            'kittengroomer.helpers.magic.from_file',
+            return_value='text/plain'
+        ):
+            src_path = 'src/test.txt'
+            dst_path = 'dst/test.txt'
+            file = FileBase(src_path, dst_path)
+        return file
 
     # Constructor behavior
 
@@ -133,44 +140,55 @@ class TestFileBase:
         with mock.patch('kittengroomer.helpers.magic.from_file',
                         return_value='data'):
             file = FileBase('', '')
-        assert file.has_mimetype == False
+        assert file.has_mimetype is False
 
     # File properties
 
-    def get_property_doesnt_exist(self):
+    def get_property_doesnt_exist(self, text_file):
         """Trying to get a property that doesn't exist should return None."""
-        pass
+        assert text_file.get_property('thing') is None
 
-    def get_property_builtin(self):
-        """Getting a default property that's been set should return that property."""
-        pass
+    def get_property_builtin(self, text_file):
+        """Getting a property that's been set should return that property."""
+        assert text_file.get_property('is_dangerous') is False
 
-    def get_property_user_defined(self):
-        """Getting a user defined property should return that propety."""
-        pass
+    def get_property_user_defined(self, text_file):
+        """Getting a user defined property should return that property."""
+        text_file._user_defined = {'thing': True}
+        assert text_file.get_property('thing') is True
 
-    def set_property_user_defined(self):
+    def set_property_user_defined(self, text_file):
         """Setting a non-default property should make it available for
         get_property."""
-        pass
+        text_file.set_property('thing', True)
+        assert text_file.get_property('thing') is True
 
-    def set_property_builtin(self):
+    def set_property_builtin(self, text_file):
         """Setting a builtin property should assign that property."""
-        pass
+        text_file.set_property('is_dangerous', True)
+        assert text_file.get_property('is_dangerous') is True
 
-    def test_add_new_description(self):
-        pass
+    def test_add_new_description(self, text_file):
+        """Adding a new description should add it to the list of description strings."""
+        text_file.add_description('thing')
+        assert text_file.get_property('description_string') == ['thing']
 
-    def test_add_description_exists(self):
-        pass
+    def test_add_description_exists(self, text_file):
+        """Adding a description that already exists shouldn't duplicate it."""
+        text_file.add_description('thing')
+        text_file.add_description('thing')
+        assert text_file.get_property('description_string') == ['thing']
 
     def test_add_new_error(self):
+        """Adding a new error should add it to the dict of errors."""
         pass
 
     def test_add_error_exists(self):
+        """Adding an error that already exists shouldn't duplicate it."""
         pass
 
     def test_normal_file_mark_dangerous(self):
+        """Marking a normal file dangerous shouldn't make it """
         pass
 
     def test_normal_file_mark_dangerous_filename_change(self):