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from django.core import cache
from ..base import BaseTestCase
class CachePanelTestCase(BaseTestCase):
panel_id = "CachePanel"
def test_recording(self):
self.assertEqual(len(self.panel.calls), 0)
cache.cache.set("foo", "bar")
cache.cache.get("foo")
cache.cache.delete("foo")
self.assertFalse(cache.cache.touch("foo"))
cache.cache.set("foo", "bar")
self.assertTrue(cache.cache.touch("foo"))
# Verify that the cache has a valid clear method.
cache.cache.clear()
self.assertEqual(len(self.panel.calls), 7)
def test_recording_caches(self):
self.assertEqual(len(self.panel.calls), 0)
default_cache = cache.caches[cache.DEFAULT_CACHE_ALIAS]
second_cache = cache.caches["second"]
default_cache.set("foo", "bar")
second_cache.get("foo")
self.assertEqual(len(self.panel.calls), 2)
def test_hits_and_misses(self):
cache.cache.clear()
cache.cache.get("foo")
self.assertEqual(self.panel.hits, 0)
self.assertEqual(self.panel.misses, 1)
cache.cache.set("foo", 1)
cache.cache.get("foo")
self.assertEqual(self.panel.hits, 1)
self.assertEqual(self.panel.misses, 1)
cache.cache.get_many(["foo", "bar"])
self.assertEqual(self.panel.hits, 2)
self.assertEqual(self.panel.misses, 2)
cache.cache.set("bar", 2)
cache.cache.get_many(keys=["foo", "bar"])
self.assertEqual(self.panel.hits, 4)
self.assertEqual(self.panel.misses, 2)
def test_get_or_set_value(self):
cache.cache.get_or_set("baz", "val")
self.assertEqual(cache.cache.get("baz"), "val")
calls = [
(call["name"], call["args"], call["kwargs"]) for call in self.panel.calls
]
self.assertEqual(
calls,
[
("get_or_set", ("baz", "val"), {}),
("get", ("baz",), {}),
],
)
self.assertEqual(
self.panel.counts,
{
"add": 0,
"get": 1,
"set": 0,
"get_or_set": 1,
"touch": 0,
"delete": 0,
"clear": 0,
"get_many": 0,
"set_many": 0,
"delete_many": 0,
"has_key": 0,
"incr": 0,
"decr": 0,
"incr_version": 0,
"decr_version": 0,
},
)
def test_get_or_set_does_not_override_existing_value(self):
cache.cache.set("foo", "bar")
cached_value = cache.cache.get_or_set("foo", "other")
self.assertEqual(cached_value, "bar")
calls = [
(call["name"], call["args"], call["kwargs"]) for call in self.panel.calls
]
self.assertEqual(
calls,
[
("set", ("foo", "bar"), {}),
("get_or_set", ("foo", "other"), {}),
],
)
self.assertEqual(
self.panel.counts,
{
"add": 0,
"get": 0,
"set": 1,
"get_or_set": 1,
"touch": 0,
"delete": 0,
"clear": 0,
"get_many": 0,
"set_many": 0,
"delete_many": 0,
"has_key": 0,
"incr": 0,
"decr": 0,
"incr_version": 0,
"decr_version": 0,
},
)
def test_insert_content(self):
"""
Test that the panel only inserts content after generate_stats and
not the process_request.
"""
cache.cache.get("café")
response = self.panel.process_request(self.request)
# ensure the panel does not have content yet.
self.assertNotIn("café", self.panel.content)
self.panel.generate_stats(self.request, response)
# ensure the panel renders correctly.
content = self.panel.content
self.assertIn("café", content)
self.assertValidHTML(content)
def test_generate_server_timing(self):
self.assertEqual(len(self.panel.calls), 0)
cache.cache.set("foo", "bar")
cache.cache.get("foo")
cache.cache.delete("foo")
self.assertEqual(len(self.panel.calls), 3)
response = self.panel.process_request(self.request)
self.panel.generate_stats(self.request, response)
self.panel.generate_server_timing(self.request, response)
stats = self.panel.get_stats()
expected_data = {
"total_time": {
"title": "Cache {} Calls".format(stats["total_calls"]),
"value": stats["total_time"],
}
}
self.assertEqual(self.panel.get_server_timing_stats(), expected_data)
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