More test with open fds and WordList.

Make sure WordLists handle open file descriptors correctly.

tests/test_wordlist.py

@@ -219,6 +219,24 @@ class TestWordList(object):
             assert w_list.fd is not None
             assert w_list.path is None
 
+    def test_open_file_descriptor_simple(self, tmpdir):
+        # we handle simple lists from open file descriptors correctly
+        in_file = tmpdir.mkdir("work").join("mywordlist")
+        in_file.write("foo\nbar\n\nbaz\n")
+        with open(str(in_file), "r") as my_open_file:
+            w_list = WordList(my_open_file)
+            result = tuple(w_list)
+        assert result == ("foo", "bar", "baz")
+
+    def test_open_file_descriptor_signed(self):
+        # we can handle signed wordlists from open file descriptors
+        in_path = os.path.join(
+            os.path.dirname(__file__), "sample_signed_wordlist.asc")
+        with open(str(in_path), "r") as my_open_file:
+            w_list = WordList(my_open_file)
+            result = tuple(w_list)
+        assert ("foo", "bar", "-dash-at-start", "baz") == result
+
     def test_detect_unsigned_wordlists(self, tmpdir):
         # we can detect unsigned wordlist files.
         in_file = tmpdir.mkdir("work").join("mywordlist")