Started implementation of Store.lookup_file.

2 files changed, 14 insertions, 0 deletions

diff --git a/obnam/store.py b/obnam/store.py
index abd2cc65..73e0458b 100644
--- a/obnam/store.py
+++ b/obnam/store.py
@@ -205,3 +205,13 @@ class Store:
 
         parts = self.parse_pathname(pathname)
         return self._lookup_dir_from_refs(generation.get_dirrefs(), parts)
+
+    def lookup_file(self, generation, pathname):
+        """Find a non-directory thingy in a generation.
+        
+        Return a FILE component that corresponds to the filesystem entity
+        in question. If not found, return None.
+        
+        """
+        
+        return None
diff --git a/obnam/storeTests.py b/obnam/storeTests.py
index 196547c4..2e3334a3 100644
--- a/obnam/storeTests.py
+++ b/obnam/storeTests.py
@@ -271,3 +271,7 @@ class StoreLookupTests(unittest.TestCase):
     def testDoesNotFindNonExistentDir(self):
         self.failUnlessEqual(self.store.lookup_dir(self.gen, "notexist"),
                              None)
+
+    def testDoesNotFindNonExistentFile(self):
+        self.failUnlessEqual(self.store.lookup_file(self.gen, "notexist"),
+                             None)