Merge 6a7b062 into a4a6cf6

docs/libearth.rst

@@ -5,6 +5,7 @@
       :maxdepth: 2
 
       libearth/compat
+      libearth/feed
       libearth/repository
       libearth/schema
       libearth/session

docs/libearth/feed.rst

@@ -0,0 +1,3 @@
+
+.. automodule:: libearth.feed
+   :members:

libearth/feed.py

@@ -0,0 +1,40 @@
+""":mod:`libearth.feed` --- Feed list
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+"""
+
+from .compat import xrange
+
+class Feed(object):
+    def __init__(self, path=None):
+        """Initializer of Feed list
+        when path is None, it doesn't save opml file. just use memory
+        """
+        #TODO: save with file, load with file
+        self.path = path
+        self.feedlist = {}
+
+    def __len__(self):
+        return len(self.feedlist)
+
+    def __repr__(self):
+        return '<{0.__module__}.{0.__name__} using {1}>'.format(type(self), self.path)
+
+    def add_feed(self, title, url):
+        if url in self.feedlist:
+            raise AlreadyExistException("{0} is already Exist".format(title))
+        self.feedlist[url] = {'title': title}
+
+    def remove_feed(self, url):
+        """Remove feed from feed list
+        :returns: :const:`True` when successfuly removed. :const:`False` when have not to or failed to remove.
+        :rtype: :class:`bool`
+        """
+        if url not in self.feedlist:
+            return False
+        else:
+            self.feedlist.pop(url)
+            return True
+
+class AlreadyExistException(Exception):
+    pass

tests/feed_test.py

@@ -0,0 +1,23 @@
+from pytest import raises
+
+from libearth.compat import xrange
+from libearth.feed import Feed, AlreadyExistException
+
+def test_count_empty_list():
+    f = Feed()
+    assert len(f) == 0
+
+def test_count_duplicated_url():
+    f = Feed()
+    with raises(AlreadyExistException):
+        for i in xrange(30):
+            f.add_feed('title', 'url')
+
+    assert len(f) == 1
+
+def test_count_after_remove():
+    f = Feed()
+    f.add_feed('title', 'url')
+    f.remove_feed('url')
+
+    assert len(f) == 0