1 files changed, 3 insertions, 2 deletions

diff --git a/tests/integration/harness.py b/tests/integration/harness.py
index 10aa6de..e5ec621 100644
--- a/tests/integration/harness.py
+++ b/tests/integration/harness.py
@@ -77,7 +77,7 @@ def free_port(attempts=50):
 class Tracker:
     """One tracker process, listening on loopback."""
 
-    def __init__(self, extra_config="", files=None):
+    def __init__(self, extra_config="", files=None, extra_args=()):
         self.port = free_port()
         # Only used by a config that asks for live sync, but allocated either
         # way so {livesync_port} always resolves.
@@ -99,7 +99,8 @@ class Tracker:
             # where LeakSanitizer exists and off where it does not. Asking for it
             # by name makes the tracker refuse to start on macOS and FreeBSD.
             environment = dict(os.environ, ASAN_OPTIONS="abort_on_error=0")
-            self.process = subprocess.Popen([TRACKER, "-f", self.config], stdout=self.log, stderr=self.log, env=environment)
+            argv = [TRACKER, "-f", self.config] + [str(a) for a in extra_args]
+            self.process = subprocess.Popen(argv, stdout=self.log, stderr=self.log, env=environment)
             self._wait_for_port()
         except BaseException:
             self._cleanup()