usb1.testUSB1: Silence a deprecation warning triggered as part of the test
diff --git a/usb1/testUSB1.py b/usb1/testUSB1.py
index b978045..b2f7ecb 100644
--- a/usb1/testUSB1.py
+++ b/usb1/testUSB1.py
@@ -21,6 +21,7 @@
 import gc
 import itertools
 import unittest
+import warnings
 import weakref
 import usb1
 from . import libusb1
@@ -328,7 +329,11 @@
         """
         context = USBContext() # Deprecated
         try:
-            fd_list = context.getPollFDList()
+            with warnings.catch_warnings(
+                action='ignore',
+                category=DeprecationWarning,
+            ):
+                fd_list = context.getPollFDList()
         except NotImplementedError:
             raise unittest.SkipTest(
                 'libusb without file descriptor events',