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# vim: ft=python fileencoding=utf-8 sts=4 sw=4 et:
# Copyright 2015 lamarpavel
#
# This file is part of qutebrowser.
#
# qutebrowser is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# qutebrowser is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with qutebrowser. If not, see <http://www.gnu.org/licenses/>.
"""Tests for qutebrowser.browser.cache"""
from PyQt5.QtCore import QUrl, QDateTime
from PyQt5.QtNetwork import QNetworkDiskCache, QNetworkCacheMetaData
from qutebrowser.browser import cache
def preload_cache(cache, url='http://www.example.com/', content=b'foobar'):
metadata = QNetworkCacheMetaData()
metadata.setUrl(QUrl(url))
assert metadata.isValid()
device = cache.prepare(metadata)
assert device is not None
device.write(content)
cache.insert(device)
def test_cache_size_leq_max_cache_size(config_stub, tmpdir):
"""Test cacheSize <= MaximumCacheSize when cache is activated."""
limit = 100
config_stub.data = {
'storage': {'cache-size': limit},
'general': {'private-browsing': False}
}
disk_cache = cache.DiskCache(str(tmpdir))
assert disk_cache.maximumCacheSize() == limit
preload_cache(disk_cache, 'http://www.example.com/')
preload_cache(disk_cache, 'http://qutebrowser.org')
preload_cache(disk_cache, 'http://foo.xxx')
preload_cache(disk_cache, 'http://bar.net')
assert disk_cache.expire() < limit
# Add a threshold to the limit due to unforseeable Qt internals
assert disk_cache.cacheSize() < limit+100
def test_cache_deactivated_private_browsing(config_stub, tmpdir):
"""Test if cache is deactivated in private-browsing mode."""
config_stub.data = {
'storage': {'cache-size': 1024},
'general': {'private-browsing': True}
}
disk_cache = cache.DiskCache(str(tmpdir))
metadata = QNetworkCacheMetaData()
metadata.setUrl(QUrl('http://www.example.com/'))
assert metadata.isValid()
assert disk_cache.prepare(metadata) is None
def test_cache_deactivated_get_data(config_stub, tmpdir):
"""Query some data from a deactivated cache."""
config_stub.data = {
'storage': {'cache-size': 1024},
'general': {'private-browsing': True}
}
disk_cache = cache.DiskCache(str(tmpdir))
url = QUrl('http://www.example.com/')
assert disk_cache.data(url) is None
def test_cache_get_nonexistent_data(config_stub, tmpdir):
"""Test querying some data that was never inserted."""
config_stub.data = {
'storage': {'cache-size': 1024},
'general': {'private-browsing': False}
}
disk_cache = cache.DiskCache(str(tmpdir))
preload_cache(disk_cache, 'https://qutebrowser.org')
assert disk_cache.data(QUrl('http://qutebrowser.org')) is None
def test_cache_deactivated_remove_data(config_stub, tmpdir):
"""Test removing some data from a deactivated cache."""
config_stub.data = {
'storage': {'cache-size': 1024},
'general': {'private-browsing': True}
}
disk_cache = cache.DiskCache(str(tmpdir))
url = QUrl('http://www.example.com/')
assert disk_cache.remove(url) == False
def test_cache_insert_data(tmpdir):
"""Test if entries inserted into the cache are actually there."""
url = 'http://qutebrowser.org'
content = b'foobar'
disk_cache = QNetworkDiskCache()
disk_cache.setCacheDirectory(str(tmpdir))
assert disk_cache.cacheSize() == 0
preload_cache(disk_cache, url, content)
assert disk_cache.cacheSize() != 0
assert disk_cache.data(QUrl(url)).readAll() == content
def test_cache_remove_data(tmpdir):
"""Test if a previously inserted entry can be removed from the cache."""
url = 'http://qutebrowser.org'
disk_cache = QNetworkDiskCache()
disk_cache.setCacheDirectory(str(tmpdir))
preload_cache(disk_cache, url)
assert disk_cache.cacheSize() > 0
assert disk_cache.remove(QUrl(url))
assert disk_cache.cacheSize() == 0
def test_cache_clear_activated(config_stub, tmpdir):
"""Test if cache is empty after clearing it."""
config_stub.data = {
'storage': {'cache-size': 1024},
'general': {'private-browsing': False}
}
disk_cache = cache.DiskCache(str(tmpdir))
assert disk_cache.cacheSize() == 0
preload_cache(disk_cache)
assert disk_cache.cacheSize() != 0
disk_cache.clear()
assert disk_cache.cacheSize() == 0
def test_cache_metadata(tmpdir):
"""Ensure that DiskCache.metaData() returns exactly what was inserted."""
url = 'http://qutebrowser.org'
metadata = QNetworkCacheMetaData()
metadata.setUrl(QUrl(url))
assert metadata.isValid()
disk_cache = QNetworkDiskCache()
disk_cache.setCacheDirectory(str(tmpdir))
device = disk_cache.prepare(metadata)
device.write(b'foobar')
disk_cache.insert(device)
assert disk_cache.metaData(QUrl(url)) == metadata
def test_cache_update_metadata(tmpdir):
"""Test updating the meta data for an existing cache entry."""
url = 'http://qutebrowser.org'
disk_cache = QNetworkDiskCache()
disk_cache.setCacheDirectory(str(tmpdir))
preload_cache(disk_cache, url, b'foo')
assert disk_cache.cacheSize() > 0
metadata = QNetworkCacheMetaData()
metadata.setUrl(QUrl(url))
assert metadata.isValid()
disk_cache.updateMetaData(metadata)
assert disk_cache.metaData(QUrl(url)) == metadata
def test_cache_full(config_stub, tmpdir):
"""Do a sanity test involving everything."""
config_stub.data = {
'storage': {'cache-size': 1024},
'general': {'private-browsing': False}
}
disk_cache = QNetworkDiskCache()
disk_cache.setCacheDirectory(str(tmpdir))
url = 'http://qutebrowser.org'
content = b'cutebowser'
preload_cache(disk_cache, url, content)
url2 = 'https://qutebrowser.org'
content2 = b'ohmycert'
preload_cache(disk_cache, url2, content2)
metadata = QNetworkCacheMetaData()
metadata.setUrl(QUrl(url))
soon = QDateTime.currentDateTime().addMonths(4)
assert soon.isValid()
metadata.setLastModified(soon)
assert metadata.isValid()
disk_cache.updateMetaData(metadata)
disk_cache.remove(QUrl(url2))
assert disk_cache.metaData(QUrl(url)).lastModified() == soon
assert disk_cache.data(QUrl(url)).readAll() == content
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