tests/test_apt_cache.py: add test for provides_list

1 files changed, 14 insertions, 1 deletions

diff --git a/tests/test_apt_cache.py b/tests/test_apt_cache.py
index 44b95cab..d6a2cbd4 100644
--- a/tests/test_apt_cache.py
+++ b/tests/test_apt_cache.py
@@ -62,7 +62,20 @@ class TestAptCache(unittest.TestCase):
                                          include_nonvirtual=True)
         self.assertTrue(len(l), 1)
         self.assertTrue("mail-transport-agent" in cache["postfix"].candidate.provides)
-        
+
+    def test_low_level_pkg_provides(self):
+        # low level cache provides list of the pkg
+        cache = apt_pkg.Cache()
+        l = cache["mail-transport-agent"].provides_list
+        # arbitrary number, just needs to be higher enough
+        self.assertTrue(len(l), 5)
+        for (providesname, providesver, version) in l:
+            self.assertEqual(providesname, "mail-transport-agent")
+            if version.parent_pkg.name == "postfix":
+                break
+        else:
+            self.assertNotReached()
+   
 
     def test_dpkg_journal_dirty(self):
         # backup old value