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# Unit tests for cache framework
# Uses whatever cache backend is set in the test settings file.
from django.core.cache import cache
import time, unittest
# functions/classes for complex data type tests
def f():
return 42
class C:
def m(n):
return 24
class Cache(unittest.TestCase):
def test_simple(self):
# simple set/get
cache.set("key", "value")
self.assertEqual(cache.get("key"), "value")
def test_non_existent(self):
# get with non-existent keys
self.assertEqual(cache.get("does not exist"), None)
self.assertEqual(cache.get("does not exist", "bang!"), "bang!")
def test_get_many(self):
# get_many
cache.set('a', 'a')
cache.set('b', 'b')
cache.set('c', 'c')
cache.set('d', 'd')
self.assertEqual(cache.get_many(['a', 'c', 'd']), {'a' : 'a', 'c' : 'c', 'd' : 'd'})
self.assertEqual(cache.get_many(['a', 'b', 'e']), {'a' : 'a', 'b' : 'b'})
def test_delete(self):
# delete
cache.set("key1", "spam")
cache.set("key2", "eggs")
self.assertEqual(cache.get("key1"), "spam")
cache.delete("key1")
self.assertEqual(cache.get("key1"), None)
self.assertEqual(cache.get("key2"), "eggs")
def test_has_key(self):
# has_key
cache.set("hello", "goodbye")
self.assertEqual(cache.has_key("hello"), True)
self.assertEqual(cache.has_key("goodbye"), False)
def test_data_types(self):
# test data types
stuff = {
'string' : 'this is a string',
'int' : 42,
'list' : [1, 2, 3, 4],
'tuple' : (1, 2, 3, 4),
'dict' : {'A': 1, 'B' : 2},
'function' : f,
'class' : C,
}
for (key, value) in stuff.items():
cache.set(key, value)
self.assertEqual(cache.get(key), value)
def test_expiration(self):
# expiration
cache.set('expire', 'very quickly', 1)
time.sleep(2)
self.assertEqual(cache.get("expire"), None)
if __name__ == '__main__':
unittest.main()
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