PYTHON-888 - Skip UUID test on python 2.4.

test/test_bson.py

@@ -487,6 +487,9 @@ class TestBSON(unittest.TestCase):
                          BSON.encode({"tuple": (1, 2)}).decode())
 
     def test_backport_codec_options_uuid(self):
+        if not should_test_uuid:
+            raise SkipTest("No uuid module")
+
         # Generated by the Java driver
         from_java = b('bAAAAAdfaWQAUCBQxkVm+XdxJ9tOBW5ld2d1aWQAEAAAAAMIQkfACFu'
                       'Z/0RustLOU/G6Am5ld2d1aWRzdHJpbmcAJQAAAGZmOTk1YjA4LWMwND'