def test_list_hashes(dvc):
tree = BaseRemoteTree(dvc, {})
tree.path_info = PathInfo("foo")
with mock.patch.object(tree, "list_paths", return_value=["12/3456",
"bar"]):
hashes = list(tree.list_hashes())
assert hashes == ["123456"]
def test_list_paths(dvc):
tree = BaseRemoteTree(dvc, {})
tree.path_info = PathInfo("foo")
with mock.patch.object(tree, "walk_files", return_value=[]) as walk_mock:
for _ in tree.list_paths():
pass
walk_mock.assert_called_with(tree.path_info, prefix=False)
for _ in tree.list_paths(prefix="000"):
pass
walk_mock.assert_called_with(tree.path_info / "00" / "0", prefix=True)
def test_checksums_exist(object_exists, traverse, dvc):
remote = Remote(BaseRemoteTree(dvc, {}))
# remote does not support traverse
remote.tree.CAN_TRAVERSE = False
with mock.patch.object(
remote.tree, "list_checksums", return_value=list(range(256))
):
checksums = set(range(1000))
remote.checksums_exist(checksums)
object_exists.assert_called_with(checksums, None, None)
traverse.assert_not_called()
remote.tree.CAN_TRAVERSE = True
# large remote, small local
object_exists.reset_mock()
traverse.reset_mock()
with mock.patch.object(
remote.tree, "list_checksums", return_value=list(range(256))
):
checksums = list(range(1000))
remote.checksums_exist(checksums)
# verify that _cache_paths_with_max() short circuits
# before returning all 256 remote checksums
max_checksums = math.ceil(
remote.tree._max_estimation_size(checksums)
/ pow(16, remote.tree.TRAVERSE_PREFIX_LEN)
)
assert max_checksums < 256
object_exists.assert_called_with(
frozenset(range(max_checksums, 1000)), None, None
)
traverse.assert_not_called()
# large remote, large local
object_exists.reset_mock()
traverse.reset_mock()
remote.tree.JOBS = 16
with mock.patch.object(
remote.tree, "list_checksums", return_value=list(range(256))
):
checksums = list(range(1000000))
remote.checksums_exist(checksums)
object_exists.assert_not_called()
traverse.assert_called_with(
256 * pow(16, remote.tree.TRAVERSE_PREFIX_LEN),
set(range(256)),
None,
None,
)
def test_cmd_error(dvc):
config = {}
cmd = "sed 'hello'"
ret = "1"
err = "sed: expression #1, char 2: extra characters after command"
with mock.patch.object(
BaseRemoteTree,
"remove",
side_effect=RemoteCmdError("base", cmd, ret, err),
):
with pytest.raises(RemoteCmdError):
BaseRemoteTree(dvc, config).remove("file")
def test_list_hashes_traverse(_path_to_hash, list_hashes, dvc):
tree = BaseRemoteTree(dvc, {})
tree.path_info = PathInfo("foo")
# parallel traverse
size = 256 / tree.JOBS * tree.LIST_OBJECT_PAGE_SIZE
list(tree.list_hashes_traverse(size, {0}))
for i in range(1, 16):
list_hashes.assert_any_call(prefix=f"{i:03x}",
progress_callback=CallableOrNone)
for i in range(1, 256):
list_hashes.assert_any_call(prefix=f"{i:02x}",
progress_callback=CallableOrNone)
# default traverse (small remote)
size -= 1
list_hashes.reset_mock()
list(tree.list_hashes_traverse(size - 1, {0}))
list_hashes.assert_called_with(prefix=None,
progress_callback=CallableOrNone)
def test_missing_deps(dvc):
requires = {"missing": "missing"}
with mock.patch.object(BaseRemoteTree, "REQUIRES", requires):
with pytest.raises(RemoteMissingDepsError):
BaseRemoteTree(dvc, {})