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-- test if cache module properties work
local function test_properties()
is(type(cache), 'table', 'cache module is loaded')
is(cache.count(), 0, 'cache is empty on startup')
local backends = cache.backends()
is(type(backends), 'table', 'cache provides a list of backends')
ok(backends['lmdb'], 'cache provides built-in lmdb backend')
is(cache.current_storage, 'lmdb://', 'cache starts with lmdb backend')
is(cache.current_size, 100 * MB, 'cache starts with default size limit')
is(cache.max_ttl(10), 10, 'allows setting maximum TTL')
is(cache.max_ttl(), 10, 'stored maximum TTL')
is(cache.min_ttl(1), 1, 'allows setting minimum TTL')
is(cache.min_ttl(), 1, 'stored minimum TTL')
end
-- test if the stats work with reopening the cache and operations fail with closed cache
local function test_stats()
ok(cache.close(), 'cache can be closed')
boom(cache.open, {100 * MB, 'invalid://'}, 'cache cannot be opened with invalid backend')
boom(cache.clear, {}, '.clear() does not work on closed cache')
boom(cache.count, {}, '.count() does not work on closed cache')
boom(cache.get, { 'key' }, '.get(...) does not work on closed cache')
ok(cache.open(100 * MB), 'cache can be reopened')
local s = cache.stats()
is(type(s), 'table', 'stats returns a table')
same({s.hit, s.miss, s.insert, s.delete}, {0, 0, 0, 0}, 'stats returns correct fields')
end
-- test if cache can be resized or shrunk
local function test_resize()
ok(cache.open(200 * MB, 'lmdb://'), 'cache can be resized')
is(cache.current_size, 200 * MB, 'cache was resized')
ok(cache.open(50 * MB), 'cache can be shrunk')
is(cache.current_size, 50 * MB, 'cache was shrunk')
end
-- test access to cache through context
local function test_context_cache()
local c = kres.context().cache
is(type(c), 'cdata', 'context has a cache object')
local s = c.stats
same({s.hit, s.miss, s.insert, s.delete}, {0, 0, 0, 0}, 'context cache stats works')
-- insert a record into cache
local rdata = '\1\2\3\4'
local rr = kres.rrset('\3com\0', kres.type.A, kres.class.IN, 66)
rr:add_rdata(rdata, #rdata)
ok(c:insert(rr, nil, 0, 0), 'cache insertion works')
ok(c:sync(), 'cache sync works')
same(s.insert, 1, 'cache insertion increments counters')
end
return {
test_properties,
test_stats,
test_resize,
test_context_cache,
}
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