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#!/usr/bin/env python3
# -*- coding: utf-8 -*-
# Copyright 2020 Mike Fährmann
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License version 2 as
# published by the Free Software Foundation.
import os
import sys
import unittest
from unittest.mock import patch
import tempfile
sys.path.insert(0, os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
from gallery_dl import config, util # noqa E402
dbpath = tempfile.mkstemp()[1]
config.set(("cache",), "file", dbpath)
from gallery_dl import cache # noqa E402
cache._init()
# def tearDownModule():
# util.remove_file(dbpath)
class TestCache(unittest.TestCase):
def test_decorator(self):
@cache.memcache()
def mc1():
pass
@cache.memcache(maxage=10)
def mc2():
pass
@cache.cache()
def dbc():
pass
self.assertIsInstance(mc1, cache.CacheDecorator)
self.assertIsInstance(mc2, cache.MemoryCacheDecorator)
self.assertIsInstance(dbc, cache.DatabaseCacheDecorator)
def test_keyarg_mem_simple(self):
@cache.memcache(keyarg=2)
def ka(a, b, c):
return a+b+c
self.assertEqual(ka(1, 1, 1), 3)
self.assertEqual(ka(2, 2, 2), 6)
self.assertEqual(ka(0, 0, 1), 3)
self.assertEqual(ka(9, 9, 1), 3)
self.assertEqual(ka(0, 0, 2), 6)
self.assertEqual(ka(9, 9, 2), 6)
def test_keyarg_mem(self):
@cache.memcache(keyarg=2, maxage=10)
def ka(a, b, c):
return a+b+c
self.assertEqual(ka(1, 1, 1), 3)
self.assertEqual(ka(2, 2, 2), 6)
self.assertEqual(ka(0, 0, 1), 3)
self.assertEqual(ka(9, 9, 1), 3)
self.assertEqual(ka(0, 0, 2), 6)
self.assertEqual(ka(9, 9, 2), 6)
def test_keyarg_db(self):
@cache.cache(keyarg=2, maxage=10)
def ka(a, b, c):
return a+b+c
self.assertEqual(ka(1, 1, 1), 3)
self.assertEqual(ka(2, 2, 2), 6)
self.assertEqual(ka(0, 0, 1), 3)
self.assertEqual(ka(9, 9, 1), 3)
self.assertEqual(ka(0, 0, 2), 6)
self.assertEqual(ka(9, 9, 2), 6)
def test_expires_mem(self):
@cache.memcache(maxage=2)
def ex(a, b, c):
return a+b+c
with patch("time.time") as tmock:
tmock.return_value = 0.001
self.assertEqual(ex(1, 1, 1), 3)
self.assertEqual(ex(2, 2, 2), 3)
self.assertEqual(ex(3, 3, 3), 3)
# value is still cached after 1 second
tmock.return_value += 1.0
self.assertEqual(ex(3, 3, 3), 3)
self.assertEqual(ex(2, 2, 2), 3)
self.assertEqual(ex(1, 1, 1), 3)
# new value after 'maxage' seconds
tmock.return_value += 1.0
self.assertEqual(ex(3, 3, 3), 9)
self.assertEqual(ex(2, 2, 2), 9)
self.assertEqual(ex(1, 1, 1), 9)
def test_expires_db(self):
@cache.cache(maxage=2)
def ex(a, b, c):
return a+b+c
with patch("time.time") as tmock:
tmock.return_value = 0.999
self.assertEqual(ex(1, 1, 1), 3)
self.assertEqual(ex(2, 2, 2), 3)
self.assertEqual(ex(3, 3, 3), 3)
# value is still cached after 1 second
tmock.return_value += 1.0
self.assertEqual(ex(3, 3, 3), 3)
self.assertEqual(ex(2, 2, 2), 3)
self.assertEqual(ex(1, 1, 1), 3)
# new value after 'maxage' seconds
tmock.return_value += 1.0
self.assertEqual(ex(3, 3, 3), 9)
self.assertEqual(ex(2, 2, 2), 9)
self.assertEqual(ex(1, 1, 1), 9)
def test_update_mem_simple(self):
@cache.memcache(keyarg=0)
def up(a, b, c):
return a+b+c
self.assertEqual(up(1, 1, 1), 3)
up.update(1, 0)
up.update(2, 9)
self.assertEqual(up(1, 0, 0), 0)
self.assertEqual(up(2, 0, 0), 9)
def test_update_mem(self):
@cache.memcache(keyarg=0, maxage=10)
def up(a, b, c):
return a+b+c
self.assertEqual(up(1, 1, 1), 3)
up.update(1, 0)
up.update(2, 9)
self.assertEqual(up(1, 0, 0), 0)
self.assertEqual(up(2, 0, 0), 9)
def test_update_db(self):
@cache.cache(keyarg=0, maxage=10)
def up(a, b, c):
return a+b+c
self.assertEqual(up(1, 1, 1), 3)
up.update(1, 0)
up.update(2, 9)
self.assertEqual(up(1, 0, 0), 0)
self.assertEqual(up(2, 0, 0), 9)
def test_invalidate_mem_simple(self):
@cache.memcache(keyarg=0)
def inv(a, b, c):
return a+b+c
self.assertEqual(inv(1, 1, 1), 3)
inv.invalidate(1)
inv.invalidate(2)
self.assertEqual(inv(1, 0, 0), 1)
self.assertEqual(inv(2, 0, 0), 2)
def test_invalidate_mem(self):
@cache.memcache(keyarg=0, maxage=10)
def inv(a, b, c):
return a+b+c
self.assertEqual(inv(1, 1, 1), 3)
inv.invalidate(1)
inv.invalidate(2)
self.assertEqual(inv(1, 0, 0), 1)
self.assertEqual(inv(2, 0, 0), 2)
def test_invalidate_db(self):
@cache.cache(keyarg=0, maxage=10)
def inv(a, b, c):
return a+b+c
self.assertEqual(inv(1, 1, 1), 3)
inv.invalidate(1)
inv.invalidate(2)
self.assertEqual(inv(1, 0, 0), 1)
self.assertEqual(inv(2, 0, 0), 2)
def test_database_read(self):
@cache.cache(keyarg=0, maxage=10)
def db(a, b, c):
return a+b+c
# initialize cache
self.assertEqual(db(1, 1, 1), 3)
db.update(2, 6)
# check and clear the in-memory portion of said cache
self.assertEqual(db.cache[1][0], 3)
self.assertEqual(db.cache[2][0], 6)
db.cache.clear()
self.assertEqual(db.cache, {})
# fetch results from database
self.assertEqual(db(1, 0, 0), 3)
self.assertEqual(db(2, 0, 0), 6)
# check in-memory cache updates
self.assertEqual(db.cache[1][0], 3)
self.assertEqual(db.cache[2][0], 6)
if __name__ == "__main__":
unittest.main()
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