add a big-value performance test for sftp

tests/test_backends.py

@@ -26,6 +26,10 @@ def posixfs_backend(tmp_path):
 def get_sftp_backend():
  # needs an authorized key loaded into the ssh agent. pytest works, tox doesn't:
  return Sftp(username="tw", hostname="localhost", path="/Users/tw/w/borgstore/temp-store")
+ # for tests with higher latency:
+ # return Sftp(
+ # username="twaldmann", hostname="shell.ipv4.thinkmo.de", port=2222, path="/home/twaldmann/borgstore/temp-store"
+ # )
 
 
 def check_sftp_available():

tests/test_store.py

@@ -7,7 +7,7 @@
 import pytest
 
 from . import key, list_store_names
-from .test_backends import posixfs_backend # noqa
+from .test_backends import posixfs_backend, sftp_backend, sftp_is_available # noqa
 
 from borgstore.constants import ROOTNS
 from borgstore.store import Store, ItemInfo
@@ -63,6 +63,20 @@ def test_scalability_count(posixfs_backend, levels, count):
  assert list_store_names(store, ROOTNS) == keys
 
 
+@pytest.mark.skipif(not sftp_is_available, reason="SFTP is not available")
+def test_scalability_big_values(sftp_backend):
+ levels = {ROOTNS: [0]}
+ count = 10
+ value = b"x" * 2**20
+ store = Store(backend=sftp_backend, levels=levels)
+ keys = [key(i) for i in range(count)]
+ for k in keys:
+ store.store(k, value)
+ for k in keys:
+ assert store.load(k) == value
+ assert list_store_names(store, ROOTNS) == keys
+
+
 def test_file_url(tmp_path):
  from borgstore.backends.posixfs import PosixFS