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Ensure each cache config test uses separate state. (#11019)

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Hopefully this fixes these tests sometimes failing in CI.
This commit is contained in:
Patrick Cloke 2021-10-07 09:38:31 -04:00 committed by GitHub
parent e0bf34dada
commit 7301019d48
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2 changed files with 13 additions and 8 deletions
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1
changelog.d/11019.misc Normal file
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@ -0,0 +1 @@
Ensure that cache config tests do not share state.

20
tests/config/test_cache.py
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@ -12,12 +12,16 @@
# See the License for the specific language governing permissions and
# limitations under the License.
from unittest.mock import patch
from synapse.config.cache import CacheConfig, add_resizable_cache
from synapse.util.caches.lrucache import LruCache
from tests.unittest import TestCase
# Patch the global _CACHES so that each test runs against its own state.
@patch("synapse.config.cache._CACHES", new_callable=dict)
class CacheConfigTests(TestCase):
def setUp(self):
# Reset caches before each test
@ -26,7 +30,7 @@ class CacheConfigTests(TestCase):
def tearDown(self):
self.config.reset()
def test_individual_caches_from_environ(self):
def test_individual_caches_from_environ(self, _caches):
"""
Individual cache factors will be loaded from the environment.
"""
@ -39,7 +43,7 @@ class CacheConfigTests(TestCase):
self.assertEqual(dict(self.config.cache_factors), {"something_or_other": 2.0})
def test_config_overrides_environ(self):
def test_config_overrides_environ(self, _caches):
"""
Individual cache factors defined in the environment will take precedence
over those in the config.
@ -56,7 +60,7 @@ class CacheConfigTests(TestCase):
{"foo": 1.0, "bar": 3.0, "something_or_other": 2.0},
)
def test_individual_instantiated_before_config_load(self):
def test_individual_instantiated_before_config_load(self, _caches):
"""
If a cache is instantiated before the config is read, it will be given
the default cache size in the interim, and then resized once the config
@ -72,7 +76,7 @@ class CacheConfigTests(TestCase):
self.assertEqual(cache.max_size, 300)
def test_individual_instantiated_after_config_load(self):
def test_individual_instantiated_after_config_load(self, _caches):
"""
If a cache is instantiated after the config is read, it will be
immediately resized to the correct size given the per_cache_factor if
@ -85,7 +89,7 @@ class CacheConfigTests(TestCase):
add_resizable_cache("foo", cache_resize_callback=cache.set_cache_factor)
self.assertEqual(cache.max_size, 200)
def test_global_instantiated_before_config_load(self):
def test_global_instantiated_before_config_load(self, _caches):
"""
If a cache is instantiated before the config is read, it will be given
the default cache size in the interim, and then resized to the new
@ -100,7 +104,7 @@ class CacheConfigTests(TestCase):
self.assertEqual(cache.max_size, 400)
def test_global_instantiated_after_config_load(self):
def test_global_instantiated_after_config_load(self, _caches):
"""
If a cache is instantiated after the config is read, it will be
immediately resized to the correct size given the global factor if there
@ -113,7 +117,7 @@ class CacheConfigTests(TestCase):
add_resizable_cache("foo", cache_resize_callback=cache.set_cache_factor)
self.assertEqual(cache.max_size, 150)
def test_cache_with_asterisk_in_name(self):
def test_cache_with_asterisk_in_name(self, _caches):
"""Some caches have asterisks in their name, test that they are set correctly."""
config = {
@ -139,7 +143,7 @@ class CacheConfigTests(TestCase):
add_resizable_cache("*cache_c*", cache_resize_callback=cache_c.set_cache_factor)
self.assertEqual(cache_c.max_size, 200)
def test_apply_cache_factor_from_config(self):
def test_apply_cache_factor_from_config(self, _caches):
"""Caches can disable applying cache factor updates, mainly used by
event cache size.
"""