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import os
import time
import unittest
from unittest import TestCase, skipIf, skipUnless
from packaging import version
import mongomock
import mongomock.gridfs
from mongomock import helpers
try:
import gridfs
from gridfs import errors
_HAVE_GRIDFS = True
except ImportError:
_HAVE_GRIDFS = False
try:
from bson.objectid import ObjectId
import pymongo
from pymongo import MongoClient as PymongoClient
except ImportError:
...
@skipUnless(helpers.HAVE_PYMONGO, "pymongo not installed")
@skipUnless(_HAVE_GRIDFS and hasattr(gridfs.__builtins__, "copy"), "gridfs not installed")
@skipIf(os.getenv("NO_LOCAL_MONGO"), "No local Mongo server running")
class GridFsTest(TestCase):
@classmethod
def setUpClass(cls):
mongomock.gridfs.enable_gridfs_integration()
def setUp(self):
super().setUp()
self.fake_conn = mongomock.MongoClient()
self.mongo_conn = self._connect_to_local_mongodb()
self.db_name = "mongomock___testing_db"
self.mongo_conn[self.db_name]["fs"]["files"].drop()
self.mongo_conn[self.db_name]["fs"]["chunks"].drop()
self.real_gridfs = gridfs.GridFS(self.mongo_conn[self.db_name])
self.fake_gridfs = gridfs.GridFS(self.fake_conn[self.db_name])
def tearDown(self):
super().setUp()
self.mongo_conn.close()
self.fake_conn.close()
def test__put_get_small(self):
before = time.time()
fid = self.fake_gridfs.put(GenFile(50))
rid = self.real_gridfs.put(GenFile(50))
after = time.time()
ffile = self.fake_gridfs.get(fid)
rfile = self.real_gridfs.get(rid)
self.assertEqual(ffile.read(), rfile.read())
fake_doc = self.get_fake_file(fid)
mongo_doc = self.get_mongo_file(rid)
self.assertSameFile(mongo_doc, fake_doc, max_delta_seconds=after - before + 1)
def test__put_get_big(self):
# 500k files are bigger than doc size limit
before = time.time()
fid = self.fake_gridfs.put(GenFile(500000, 10))
rid = self.real_gridfs.put(GenFile(500000, 10))
after = time.time()
ffile = self.fake_gridfs.get(fid)
rfile = self.real_gridfs.get(rid)
self.assertEqual(ffile.read(), rfile.read())
fake_doc = self.get_fake_file(fid)
mongo_doc = self.get_mongo_file(rid)
self.assertSameFile(mongo_doc, fake_doc, max_delta_seconds=after - before + 1)
def test__delete_exists_small(self):
fid = self.fake_gridfs.put(GenFile(50))
self.assertTrue(self.get_fake_file(fid) is not None)
self.assertTrue(self.fake_gridfs.exists(fid))
self.fake_gridfs.delete(fid)
self.assertFalse(self.fake_gridfs.exists(fid))
self.assertFalse(self.get_fake_file(fid) is not None)
# All the chunks got removed
self.assertEqual(0, self.fake_conn[self.db_name].fs.chunks.count_documents({}))
def test__delete_exists_big(self):
fid = self.fake_gridfs.put(GenFile(500000))
self.assertTrue(self.get_fake_file(fid) is not None)
self.assertTrue(self.fake_gridfs.exists(fid))
self.fake_gridfs.delete(fid)
self.assertFalse(self.fake_gridfs.exists(fid))
self.assertFalse(self.get_fake_file(fid) is not None)
# All the chunks got removed
self.assertEqual(0, self.fake_conn[self.db_name].fs.chunks.count_documents({}))
def test__delete_no_file(self):
# Just making sure we don't crash
self.fake_gridfs.delete(ObjectId())
def test__list_files(self):
fids = [
self.fake_gridfs.put(GenFile(50, 9), filename="one"),
self.fake_gridfs.put(GenFile(62, 5), filename="two"),
self.fake_gridfs.put(GenFile(654, 1), filename="three"),
self.fake_gridfs.put(GenFile(5), filename="four"),
]
names = ["one", "two", "three", "four"]
names_no_two = [x for x in names if x != "two"]
for x in self.fake_gridfs.list():
self.assertIn(x, names)
self.fake_gridfs.delete(fids[1])
for x in self.fake_gridfs.list():
self.assertIn(x, names_no_two)
three_file = self.get_fake_file(fids[2])
self.assertEqual("three", three_file["filename"])
self.assertEqual(654, three_file["length"])
self.fake_gridfs.delete(fids[0])
self.fake_gridfs.delete(fids[2])
self.fake_gridfs.delete(fids[3])
self.assertEqual(0, len(self.fake_gridfs.list()))
def test__find_files(self):
file_ids = []
for name, data in [
("a", GenFile(50, 9)),
("b", GenFile(62, 5)),
("b", GenFile(654, 1)),
("a", GenFile(5)),
]:
time.sleep(0.001)
file_ids.append(self.fake_gridfs.put(data, filename=name))
c = self.fake_gridfs.find({"filename": "a"}).sort("uploadDate", -1)
file3 = c.next()
file0 = c.next()
self.assertFalse(c.alive)
self.assertNotEqual(file3.uploadDate, file0.uploadDate)
self.assertEqual(file_ids[3], file3._id)
self.assertEqual(file_ids[0], file0._id)
def test__put_exists(self):
self.fake_gridfs.put(GenFile(1), _id="12345")
with self.assertRaises(errors.FileExists):
self.fake_gridfs.put(GenFile(2, 3), _id="12345")
def assertSameFile(self, real, fake, max_delta_seconds=1):
# https://pymongo.readthedocs.io/en/stable/migrate-to-pymongo4.html#disable-md5-parameter-is-removed
if helpers.PYMONGO_VERSION < version.parse("4.0"):
self.assertEqual(real["md5"], fake["md5"])
self.assertEqual(real["length"], fake["length"])
self.assertEqual(real["chunkSize"], fake["chunkSize"])
self.assertLessEqual(
abs(real["uploadDate"] - fake["uploadDate"]).seconds,
max_delta_seconds,
msg="real: {}, fake: {}".format(real["uploadDate"], fake["uploadDate"]),
)
def get_mongo_file(self, i):
return self.mongo_conn[self.db_name]["fs"]["files"].find_one({"_id": i})
def get_fake_file(self, i):
return self.fake_conn[self.db_name]["fs"]["files"].find_one({"_id": i})
def _connect_to_local_mongodb(self, num_retries=60):
"""Performs retries on connection refused errors (for travis-ci builds)"""
for retry in range(num_retries):
if retry > 0:
time.sleep(0.5)
try:
return PymongoClient(
host=os.environ.get("TEST_MONGO_HOST", "localhost"), maxPoolSize=1
)
except pymongo.errors.ConnectionFailure as e:
if retry == num_retries - 1:
raise
if "connection refused" not in e.message.lower():
raise
class GenFile:
def __init__(self, length, value=0, do_encode=True):
self.gen = self._gen_data(length, value)
self.do_encode = do_encode
def _gen_data(self, length, value):
while length:
length -= 1
yield value
def _maybe_encode(self, s):
if self.do_encode and isinstance(s, str):
return s.encode("UTF-8")
return s
def read(self, num_bytes=-1):
s = ""
if num_bytes <= 0:
bytes_left = -1
else:
bytes_left = num_bytes
while True:
n = next(self.gen, None)
if n is None:
return self._maybe_encode(s)
s += chr(n)
bytes_left -= 1
if bytes_left == 0:
return self._maybe_encode(s)
if __name__ == "__main__":
unittest.main()
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