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from caffe2.python import workspace
import os
import tempfile
import unittest
class TestDB(unittest.TestCase):
def setUp(self):
handle, self.file_name = tempfile.mkstemp()
os.close(handle)
self.data = [
(
"key{}".format(i).encode("ascii"),
"value{}".format(i).encode("ascii")
)
for i in range(1, 10)
]
def testSimple(self):
db = workspace.C.create_db(
"minidb", self.file_name, workspace.C.Mode.write)
for key, value in self.data:
transaction = db.new_transaction()
transaction.put(key, value)
del transaction
del db # should close DB
db = workspace.C.create_db(
"minidb", self.file_name, workspace.C.Mode.read)
cursor = db.new_cursor()
data = []
while cursor.valid():
data.append((cursor.key(), cursor.value()))
cursor.next() # noqa: B305
del cursor
db.close() # test explicit db closer
self.assertEqual(data, self.data)
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