From a72d5f39db55dfecb48291acdd6566c6556e0b0b Mon Sep 17 00:00:00 2001 From: Erik Johnston Date: Wed, 27 May 2020 19:41:06 +0100 Subject: [PATCH] Add test for Linearizer.is_queued(..) --- tests/util/test_linearizer.py | 32 ++++++++++++++++++++++++++++++++ 1 file changed, 32 insertions(+) diff --git a/tests/util/test_linearizer.py b/tests/util/test_linearizer.py index 852ef2318..ca3858b18 100644 --- a/tests/util/test_linearizer.py +++ b/tests/util/test_linearizer.py @@ -45,6 +45,38 @@ class LinearizerTestCase(unittest.TestCase): with (yield d2): pass + @defer.inlineCallbacks + def test_linearizer_is_queued(self): + linearizer = Linearizer() + + key = object() + + d1 = linearizer.queue(key) + cm1 = yield d1 + + # Since d1 gets called immediately, "is_queued" should return false. + self.assertFalse(linearizer.is_queued(key)) + + d2 = linearizer.queue(key) + self.assertFalse(d2.called) + + # Now d2 is queued up behind successful completion of cm1 + self.assertTrue(linearizer.is_queued(key)) + + with cm1: + self.assertFalse(d2.called) + + # cm1 still not done, so d2 still queued. + self.assertTrue(linearizer.is_queued(key)) + + # And now d2 is called and nothing is in the queue again + self.assertFalse(linearizer.is_queued(key)) + + with (yield d2): + self.assertFalse(linearizer.is_queued(key)) + + self.assertFalse(linearizer.is_queued(key)) + def test_lots_of_queued_things(self): # we have one slow thing, and lots of fast things queued up behind it. # it should *not* explode the stack.