nilmdb/tests/test_misc.py
Jim Paris ea67e45be9 Clean up how we handle cherrypy's calls of os._exit(70)
With this solution, we can catch it cleanly in the standalone
nilmdb-server, and test the error paths in our normal test suite.
2019-08-30 11:59:52 -04:00

140 lines
4.7 KiB
Python

from nose.tools import *
from nose.tools import assert_raises
from testutil.helpers import *
import io
import os
import sys
import time
import socket
import cherrypy
import nilmdb.server
from nilmdb.utils import timer, lock
class TestMisc(object):
def test_timer(self):
capture = io.StringIO()
old = sys.stdout
sys.stdout = capture
with nilmdb.utils.Timer("test"):
time.sleep(0.01)
with nilmdb.utils.Timer("test syslog", tosyslog=True):
time.sleep(0.01)
sys.stdout = old
in_("test: ", capture.getvalue())
def test_lock(self):
with open("/dev/null") as f:
eq_(nilmdb.utils.lock.exclusive_lock(f), True)
nilmdb.utils.lock.exclusive_unlock(f)
# Test error conditions
class FakeFile():
def __init__(self, fileno):
self._fileno = fileno
def fileno(self):
return self._fileno
with assert_raises(TypeError):
nilmdb.utils.lock.exclusive_lock(FakeFile('none'))
with assert_raises(ValueError):
nilmdb.utils.lock.exclusive_lock(FakeFile(-1))
with assert_raises(IOError):
nilmdb.utils.lock.exclusive_lock(FakeFile(12345))
# Lock failure is tested in test_bulkdata
def test_replace_file(self):
fn = b"tests/misc-testdb/file"
try:
os.mkdir(os.path.dirname(fn))
except FileExistsError:
pass
with open(fn, "wb") as f:
f.write(b"hello, world")
nilmdb.utils.atomic.replace_file(fn, b"goodbye, world")
with open(fn, "rb") as f:
eq_(f.read(), b"goodbye, world")
def test_punch(self):
fn = b"tests/misc-testdb/punchit"
try:
os.mkdir(os.path.dirname(fn))
except FileExistsError:
pass
with open(fn, "wb") as f:
f.write(b"hello, world")
nilmdb.utils.fallocate.punch_hole(fn, 3, 5)
with open(fn, "rb") as f:
eq_(f.read(), b"hel\0\0\0\0\0orld")
with assert_raises(OSError):
nilmdb.utils.fallocate.punch_hole(fn, 1, -1, False)
with assert_raises(OSError):
nilmdb.utils.fallocate.punch_hole("/", 1, 1, False)
# no exception because we ignore errors by default
nilmdb.utils.fallocate.punch_hole(fn, 1, -1)
def test_diskusage(self):
hs = nilmdb.utils.diskusage.human_size
eq_(hs(0), "0 bytes")
eq_(hs(1), "1 byte")
eq_(hs(1023), "1023 bytes")
eq_(hs(1024), "1 kiB")
eq_(hs(1048575), "1024 kiB")
eq_(hs(1048576), "1.0 MiB")
eq_(hs(1073741823), "1024.0 MiB")
eq_(hs(1073741824), "1.00 GiB")
eq_(hs(1099511627775), "1024.00 GiB")
eq_(hs(1099511627776), "1.00 TiB")
eq_(hs(1099511627776 * 5000.1234), "5000.12 TiB")
nilmdb.utils.diskusage.du("/dev")
with assert_raises(OSError):
nilmdb.utils.diskusage.du("/dev/null/bogus")
nilmdb.utils.diskusage.du("super-bogus-does-not-exist")
def test_cors_allow(self):
# Just to get some test coverage; these code paths aren't actually
# used in current code
cpy = nilmdb.server.serverutil.cherrypy
(req, resp) = (cpy.request, cpy.response)
cpy.request.method = "DELETE"
with assert_raises(cpy.HTTPError):
nilmdb.server.serverutil.CORS_allow(methods="POST")
with assert_raises(cpy.HTTPError):
nilmdb.server.serverutil.CORS_allow(methods=["POST"])
with assert_raises(cpy.HTTPError):
nilmdb.server.serverutil.CORS_allow(methods=["GET"])
with assert_raises(cpy.HTTPError):
nilmdb.server.serverutil.CORS_allow(methods=[])
(cpy.request, cpy.response) = (req, resp)
def test_cherrypy_failure(self):
# Test failure of cherrypy to start up because the port is
# already in use. This also tests the functionality of
# serverutil:cherrypy_patch_exit()
sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
sock.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
try:
sock.bind(("127.0.0.1", 32180))
sock.listen(1)
except OSError:
raise AssertionError("port 32180 must be free for tests")
nilmdb.server.serverutil.cherrypy_patch_exit()
cherrypy.config.update({
'environment': 'embedded',
'server.socket_host': '127.0.0.1',
'server.socket_port': 32180,
'engine.autoreload.on': False,
})
with assert_raises(Exception) as e:
cherrypy.engine.start()
in_("Address already in use", str(e.exception))
sock.close()