1 files changed, 34 insertions, 0 deletions

diff --git a/tests/integration/test_livesync.py b/tests/integration/test_livesync.py
index 1659a41..3a9ee58 100644
--- a/tests/integration/test_livesync.py
+++ b/tests/integration/test_livesync.py
@@ -130,3 +130,37 @@ class LiveSyncAccess(TrackerTestCase):
         info_hash = self.hash_for("sync-unblessed")
         self.tracker.livesync_send(packet(SYNC_PEER4, [(info_hash, peer4("10.1.2.12", 6881, FLAG_SEEDING))]))
         self.assertFalse(self.tracker.wait_until(lambda: self.tracker.torrent_count() != 0, timeout=1))
+
+
+@unittest.skipUnless(has_livesync(), "this build has no WANT_SYNC_LIVE")
+class LiveSyncUnconfigured(TrackerTestCase):
+    """A binary that has the feature but no cluster to join. Somebody whose
+    packager turned WANT_SYNC_LIVE on did not ask for live sync and should
+    not be able to tell that it is there."""
+
+    config = ""
+
+    def test_the_tracker_runs_anyway(self):
+        info_hash = self.hash_for("no-cluster")
+        self.tracker.announce(info_hash, port=6881, left=0)
+        self.assertEqual(self.tracker.torrent_count(), 1)
+
+    def test_nothing_is_said_about_the_missing_cluster(self):
+        self.assertNotIn("sync", self.tracker.output().lower())
+
+    def test_no_socket_is_bound_for_it(self):
+        """A configured tracker holds the wildcard address on that port, so
+        taking it here proves nothing was started."""
+        sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
+        try:
+            sock.bind(("0.0.0.0", self.tracker.livesync_port))
+        finally:
+            sock.close()
+
+    def test_announcing_stays_clean(self):
+        """Enough announces to pass the watermark that would flush an
+        outgoing buffer, if there were one to flush. The sanitizers in this
+        build turn anything the attempt touched into a failure."""
+        for i in range(200):
+            self.tracker.announce(self.hash_for("no-cluster-%d" % i), port=6881 + i, left=0)
+        self.assertEqual(self.tracker.torrent_count(), 200)