1 files changed, 26 insertions, 4 deletions
diff --git a/tests/test_apt_cache.py b/tests/test_apt_cache.py
index 448aed75..fc429cf3 100644
--- a/tests/test_apt_cache.py
+++ b/tests/test_apt_cache.py
@@ -7,19 +7,21 @@
 # are permitted in any medium without royalty provided the copyright
 # notice and this notice are preserved.
 """Unit tests for verifying the correctness of check_dep, etc in apt_pkg."""
+
+import glob
+import logging
 import os
+import shutil
+import sys
 import tempfile
 import unittest
 
 from test_all import get_library_dir
-import sys
 sys.path.insert(0, get_library_dir())
 
 import apt
 import apt_pkg
-import shutil
-import glob
-import logging
+
 
 def if_sources_list_is_readable(f):
     def wrapper(*args, **kwargs):
@@ -29,6 +31,16 @@ def if_sources_list_is_readable(f):
             logging.warn("skipping '%s' because sources.list is not readable" % f)
     return wrapper
 
+
+def get_open_file_descriptors():
+    try:
+        fds = os.listdir("/proc/self/fd")
+    except OSError:
+        logging.warn("failed to list /proc/self/fd")
+        return set([])
+    return set(map(int, fds))
+
+
 class TestAptCache(unittest.TestCase):
     """ test the apt cache """
 
@@ -70,6 +82,16 @@ class TestAptCache(unittest.TestCase):
                 self.assertTrue(len(r['Description']) > 0)
                 self.assertTrue(str(r).startswith('Package: %s\n' % pkg.shortname))
 
+    @if_sources_list_is_readable
+    def test_closeable_cache(self):
+        fd_0 = get_open_file_descriptors()
+        cache = apt.Cache()
+        opened_fd = get_open_file_descriptors().difference(fd_0)
+        cache.close()
+        fd_1 = get_open_file_descriptors()
+        unclosed_fd = opened_fd.intersection(fd_1)
+        self.assertEqual(unclosed_fd, set())
+
     def test_get_provided_packages(self):
         apt.apt_pkg.config.set("Apt::architecture", "i386")
         cache = apt.Cache(rootdir="./data/test-provides/")