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# Copyright (C) 2006-2018, Stefan Schwarzer <sschwarzer@sschwarzer.net>
# and ftputil contributors (see `doc/contributors.txt`)
# See the file LICENSE for licensing terms.
import time
import pytest
import ftputil.error
import ftputil.stat_cache
from test import scripted_session
from test import test_base
Call = scripted_session.Call
class TestStatCache:
def setup_method(self, method):
self.cache = ftputil.stat_cache.StatCache()
def test_get_set(self):
with pytest.raises(ftputil.error.CacheMissError):
self.cache.__getitem__("/path")
self.cache["/path"] = "test"
assert self.cache["/path"] == "test"
def test_invalidate(self):
# Don't raise a `CacheMissError` for missing paths
self.cache.invalidate("/path")
self.cache["/path"] = "test"
self.cache.invalidate("/path")
assert len(self.cache) == 0
def test_clear(self):
self.cache["/path1"] = "test1"
self.cache["/path2"] = "test2"
self.cache.clear()
assert len(self.cache) == 0
def test_contains(self):
self.cache["/path1"] = "test1"
assert "/path1" in self.cache
assert "/path2" not in self.cache
def test_len(self):
assert len(self.cache) == 0
self.cache["/path1"] = "test1"
self.cache["/path2"] = "test2"
assert len(self.cache) == 2
def test_resize(self):
self.cache.resize(100)
# Don't grow the cache beyond it's set size.
for i in range(150):
self.cache["/{0:d}".format(i)] = i
assert len(self.cache) == 100
def test_max_age1(self):
"""
Set expiration after setting a cache item.
"""
self.cache["/path1"] = "test1"
# Expire after one second
self.cache.max_age = 1
time.sleep(0.5)
# Should still be present
assert self.cache["/path1"] == "test1"
time.sleep(0.6)
# Should have expired (_setting_ the cache counts)
with pytest.raises(ftputil.error.CacheMissError):
self.cache.__getitem__("/path1")
def test_max_age2(self):
"""
Set expiration before setting a cache item.
"""
# Expire after one second
self.cache.max_age = 1
self.cache["/path1"] = "test1"
time.sleep(0.5)
# Should still be present
assert self.cache["/path1"] == "test1"
time.sleep(0.6)
# Should have expired (_setting_ the cache counts)
with pytest.raises(ftputil.error.CacheMissError):
self.cache.__getitem__("/path1")
def test_disabled(self):
self.cache["/path1"] = "test1"
self.cache.disable()
self.cache["/path2"] = "test2"
with pytest.raises(ftputil.error.CacheMissError):
self.cache.__getitem__("/path1")
with pytest.raises(ftputil.error.CacheMissError):
self.cache.__getitem__("/path2")
assert len(self.cache) == 1
# Don't raise a `CacheMissError` for missing paths.
self.cache.invalidate("/path2")
def test_cache_size_zero(self):
script = [
Call("__init__"),
Call("pwd", result="/"),
Call("cwd", args=("/",)),
Call("cwd", args=("/",)),
Call(
"dir",
args=("",),
result="drwxr-sr-x 2 45854 200 512 Jan 3 17:17 download\n"
"drwxr-sr-x 2 45854 200 512 Jul 30 17:14 dir with spaces\n"
"lrwxrwxrwx 2 45854 200 6 May 29 2000 link -> ../link_target\n"
"-rw-r--r-- 1 45854 200 4604 Jan 19 23:11 index.html",
),
Call("cwd", args=("/",)),
Call("close"),
]
with test_base.ftp_host_factory(scripted_session.factory(script)) as host:
with pytest.raises(ValueError):
host.stat_cache.resize(0)
# If bug #38 was present, this would raise an `IndexError`.
items = host.listdir(host.curdir)
assert items == ["download", "dir with spaces", "link", "index.html"]
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