def test_get_keys():
test_obj = LRUCache(1)
test_obj.refresh("some_key", 43, time.time())
test_obj.write("some_other_key", 42)
assert "some_key" in test_obj.get_keys()
assert "some_other_key" in test_obj.get_keys()
assert not "some_keyXYZ" in test_obj.get_keys()
def test_get_modified():
test_obj = LRUCache(1)
modified_time = time.time()
test_obj.refresh("some_key", 43, modified_time)
assert test_obj.get_modified("some_key") == modified_time
test_obj.write("some_key", 42)
assert test_obj.get_modified("some_key") < time.time()
def test_update():
test_obj = LRUCache(1)
test_obj.write("some_key", 42)
time.sleep(2)
assert test_obj.is_expired("some_key")
test_obj.update("some_key")
assert not test_obj.is_expired("some_key")
def test_resize():
test_obj = LRUCache(0.00001,30)
test_obj.set_resize_intervall(0)
for i in range(10,62):
test_obj.refresh(str(i), "a"*2000000, time.time())
time.sleep(0.001)
assert test_obj.get_size_of_cached_data() < 50000000
for j in range(10,i-15+1):
assert not str(j) in test_obj.get_keys()
for j in range(10,i+1)[-14:]:
assert test_obj.get_value(str(j)) == "a"*2000000
def test_set_modified():
test_obj = LRUCache(1)
modified_time = 42
before_modification = time.time()
test_obj.write("some_key", 101)
assert test_obj.get_modified("some_key") < time.time()
assert test_obj.get_modified("some_key") > before_modification
test_obj.set_modified("some_key", modified_time)
assert test_obj.get_modified("some_key") == modified_time
def test_write():
test_obj = LRUCache(1)
test_obj.write("some_key", 42)
test_obj.write(42, "some_key")
assert test_obj.get_value("some_key") == 42
assert test_obj.get_value(42) == "some_key"
assert test_obj.is_dirty("some_key")
def test_get_size_of_cached_data():
test_obj = LRUCache(1)
modified_time = time.time()
assert test_obj.get_size_of_cached_data() == 0
test_obj.refresh("some_key", "abcd", modified_time)
assert test_obj.get_size_of_cached_data() == sys.getsizeof("abcd")
test_obj.write("some_other_key", 42)
assert test_obj.get_size_of_cached_data() == sys.getsizeof(42)+sys.getsizeof("abcd")
test_obj.write("some_other_key", 52)
assert test_obj.get_size_of_cached_data() == sys.getsizeof(52)+sys.getsizeof("abcd")
test_obj.refresh("some_key", "abcd", modified_time)
assert test_obj.get_size_of_cached_data() == sys.getsizeof(52)+sys.getsizeof("abcd")
def test_get_size_of_dirty_data():
test_obj = LRUCache(1)
assert test_obj.get_size_of_dirty_data() == 0
test_obj.refresh("some_key", "abcd", time.time())
assert test_obj.get_size_of_dirty_data() == 0
test_obj.write("some_other_key", 42)
assert test_obj.get_size_of_dirty_data() == sys.getsizeof(42)
test_obj.write("some_other_key", 52)
assert test_obj.get_size_of_dirty_data() == sys.getsizeof(52)
test_obj.write("some_key", "abcd")
assert test_obj.get_size_of_dirty_data() == sys.getsizeof(52)+sys.getsizeof("abcd")
test_obj.refresh("some_other_key", 42, time.time())
assert test_obj.get_size_of_dirty_data() == sys.getsizeof("abcd")
def test_get_value():
test_obj = LRUCache(1)
test_obj.refresh("some_key", 43, time.time())
assert test_obj.get_value("some_key") == 43
test_obj.write("some_key", 42)
assert test_obj.get_value("some_key") == 42
def test_resize_dirty():
test_obj = LRUCache(1,0)
test_obj.set_resize_intervall(0)
for i in range(10,62):
test_obj.write(str(i), "a"*2000000)
assert test_obj.get_size_of_cached_data() > 50000000
def test_resize_zerosize():
test_obj = LRUCache(0.001,0)
test_obj.set_resize_intervall(0)
test_obj.refresh("some_key", 43, time.time())
time.sleep(0.001)
assert "some_key" in test_obj.get_keys()
test_obj.refresh("some_other_key", 42, time.time())
assert "some_other_key" in test_obj.get_keys()
assert not "some_key" in test_obj.get_keys() #deleted due to internal resize
assert test_obj.get_value("some_other_key") == 42
def test_delete():
test_obj = LRUCache(1)
test_obj.write("some_key", 42)
test_obj.write(42, "some_key")
test_obj.delete("some_key")
test_obj.delete("non_existant_key")
test_obj.delete(42)
assert_raises( KeyError, test_obj.get_value, (42) )
assert_raises( KeyError, test_obj.get_value, ("some_key") )
assert not test_obj.exists(42)
assert not test_obj.exists("some_key")
def test_exists():
test_obj = LRUCache(1)
assert not test_obj.exists("some_key")
test_obj.write("some_key", 42)
assert test_obj.exists("some_key")
assert not test_obj.exists("some_other_key")
def test_is_dirty():
test_obj = LRUCache(1)
test_obj.refresh("some_key", 43, time.time())
assert not test_obj.is_dirty("some_key")
test_obj.write("some_key", 42)
assert test_obj.is_dirty("some_key")
def test_refresh():
test_obj = LRUCache(1)
test_obj.refresh("some_key", 43, time.time())
test_obj.refresh("some_key",42, time.time())
assert test_obj.get_value("some_key") == 42
test_obj.refresh("some_key",43, time.time()-1000)
assert test_obj.get_value("some_key") == 42, "Refresh should not have worked since the modified time of the 'disk' entry is older than the cache entry."
assert not test_obj.is_dirty("some_key")
