def _create_dba(self, dbpath, shape, dtype):
""" Initialize a `DBArray` with provided information.
"""
dba = DBArray(dbpath, self.DBTYPE)
dba.set_shape(shape)
dba.set_dtype(dtype)
return dba
def test_multi_handle(self):
""" Test the case of open multiple handle for the same database.
This test is for:
https://github.com/wanji/dbarray/issues/1
"""
dbpath = os.path.join(self.tempdir, self.DBTYPE,
'test_multi_handle.db')
for idx in range(2):
# Create random array
nrows = 1
ncols = 5
dtype = np.float32
arr = np.random.random((nrows, ncols))
arr = np.require(arr, dtype)
""" `DBArray` from scratch
"""
# Create `DBArray`
dba1 = DBArray(dbpath)
# Initialize
dba1.set_shape((nrows, ncols))
dba1.set_dtype(dtype)
# Set rows
dba1[:] = arr[:]
# Convert to ndarray
dba1.tondarray()
""" Open exsiting `DBArray`
"""
# Open another DB
dba2 = DBArray(dbpath)
dba2.tondarray()
# Check if a error rises while accessing closed db
dba1._storage.env.close()
self.assertRaises(lmdb.Error, dba2.tondarray)