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from os import remove
from os.path import exists
from unittest.mock import patch
from datacache import Cache
CACHE_DIR = "datacache_test"
TEST_URL = "http://www.google.com"
TEST_FILENAME = "google"
def eq_(x, y):
assert x == y
def test_cache_object_path():
cache = Cache(CACHE_DIR)
assert cache.cache_directory_path.endswith(CACHE_DIR), \
"Expected directory path to end with %s but got %s" % (
CACHE_DIR, cache.cache_directory_path)
def test_cache_object_local_filename():
filename = Cache(CACHE_DIR).local_filename(filename="test")
assert filename.endswith("test")
def notest_cache_fetch_google():
cache = Cache(CACHE_DIR)
path = cache.fetch(TEST_URL, filename=TEST_FILENAME)
assert path.endswith(TEST_FILENAME), \
"Expected local file to be named %s but got %s" % (
TEST_FILENAME, path)
assert exists(path), "File not found: %s" % path
assert(path == cache.local_path(TEST_URL, filename=TEST_FILENAME))
@patch('datacache.cache.download._download_and_decompress_if_necessary')
def test_cache_fetch_force(mock_download):
cache = Cache("datacache_test")
cache.fetch("http://www.google.com", filename="google", force=True)
cache.fetch("http://www.google.com", filename="google", force=True)
assert len(mock_download.call_args_list) == 2, \
"Expected two separate calls to _download, given force=True"
def notest_cache_delete_url():
cache = Cache(CACHE_DIR)
path = cache.fetch(TEST_URL, filename=TEST_FILENAME)
assert exists(path), "Expected %s to exist after download" % path
cache.delete_url(TEST_URL)
assert not exists(path), \
"Expected %s to be deleted after call to delete_url" % path
def notest_cache_missing_file():
"""test_cache_missing_file : Files can be deleted from the file system,
Cache should be aware that these files no longer exist
"""
cache = Cache(CACHE_DIR)
path = cache.fetch(TEST_URL, filename=TEST_FILENAME)
# does the filename exist?
assert exists(path)
# does the cache know the URL has been downloaded?
assert cache.exists(TEST_URL, filename=TEST_FILENAME)
remove(path)
assert not cache.exists(TEST_URL, filename=TEST_FILENAME), \
"Local file for %s has been deleted from the file system" % TEST_URL
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