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Don't use global state for testing.

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This commit is contained in:
Itamar Turner-Trauring 2020-08-03 10:43:21 -04:00
parent 3a6587971a
commit 34e3052814
1 changed files with 8 additions and 6 deletions
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14
src/allmydata/test/test_iputil.py
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@ -236,26 +236,28 @@ class GcUtil(unittest.TestCase):
def test_gc_after_allocations(self):
"""The resource tracker triggers allocations every 26 allocations."""
tracker = gcutil._ResourceTracker()
collections = []
self.patch(gc, "collect", lambda: collections.append(1))
for _ in range(2):
for _ in range(25):
gcutil.fileDescriptorResource.allocate()
tracker.allocate()
self.assertEqual(len(collections), 0)
gcutil.fileDescriptorResource.allocate()
tracker.allocate()
self.assertEqual(len(collections), 1)
del collections[:]
def test_release_delays_gc(self):
"""Releasing a file descriptor resource delays GC collection."""
tracker = gcutil._ResourceTracker()
collections = []
self.patch(gc, "collect", lambda: collections.append(1))
for _ in range(2):
gcutil.fileDescriptorResource.allocate()
tracker.allocate()
for _ in range(3):
gcutil.fileDescriptorResource.release()
tracker.release()
for _ in range(25):
gcutil.fileDescriptorResource.allocate()
tracker.allocate()
self.assertEqual(len(collections), 0)
gcutil.fileDescriptorResource.allocate()
tracker.allocate()
self.assertEqual(len(collections), 1)