add simple write method

src/utilities/feedfile.py

@@ -1 +1,31 @@
 __author__ = 'stubbfel'
+
+import feedparser
+from utilities.textfile import TextFile
+
+
+class FeedFile(TextFile):
+
+    def __init__(self, filename):
+        """
+        init class
+        :param filename: path to the file
+        """
+        super(FeedFile, self).__init__(filename)
+
+    def read_feed_file(self):
+        """
+        method read and convert the content of the file to a FeedParserDict
+        :return: dict - feed object
+        """
+        feed_str = self.read_text_file()
+        return feedparser.parse(feed_str)
+
+    def write_feed_file(self, feed, serializer):
+        assert isinstance(feed, feedparser.FeedParserDict)
+
+        if serializer is None:
+            feed_string = str(feed)
+        else:
+            feed_string = serializer.toString(feed)
+        self.write_text_file(feed_string)

testenv/tests/utilities/testfeedfile.py

@@ -1,12 +1,34 @@
 __author__ = 'stubbfel'
 
 import unittest
+import feedparser
+from utilities.feedfile import FeedFile
 
 
 class MyTestCase(unittest.TestCase):
-    def test_something(self):
-        self.assertEqual(True, False)
+    def setUp(self):
+        self.__ff = FeedFile("testfeeds/rss/feed.xml")
 
+    def test_read_feed_file(self):
+        feed = self.__ff.read_feed_file()
+        self.assertTrue(isinstance(feed, feedparser.FeedParserDict))
+
+    def test_write_feed_file(self):
+        feed = self.__ff.read_feed_file()
+        ff2 = FeedFile("testfeed.xml")
+        serializer = None
+        ff2.write_feed_file(feed, serializer)
+        feed2 = ff2.read_feed_file()
+        self.assertTrue(isinstance(feed2, feedparser.FeedParserDict))
+        ff2.check_and_remove_file()
+        # self.assertDictEqual(feed, feed2)
+
+    def test_write_feed_file_none_feedparser_object(self):
+        feed = "Fail"
+        ff2 = FeedFile("testfeed.xml")
+        serializer = None
+        self.assertRaises(AssertionError, ff2.write_feed_file, feed, serializer)
+        ff2.check_and_remove_file()
 
 if __name__ == '__main__':
     unittest.main()