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test_pathslicer.py
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test_pathslicer.py
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# Copyright (C) 2021 The Software Heritage developers
# See the AUTHORS file at the top-level directory of this distribution
# License: GNU General Public License version 3, or any later version
# See top-level LICENSE file for more information
import pytest
from swh.objstorage.backends.pathslicing import PathSlicer
def test_pathslicer():
slicer = PathSlicer("/", "0:2/2:4/4:6")
assert len(slicer) == 3
assert slicer.check_config() is None
assert (
slicer.get_path("34973274ccef6ab4dfaaf86599792fa9c3fe4689")
== "/34/97/32/34973274ccef6ab4dfaaf86599792fa9c3fe4689"
)
assert (
slicer.get_directory("34973274ccef6ab4dfaaf86599792fa9c3fe4689") == "/34/97/32"
)
assert slicer.get_slices("34973274ccef6ab4dfaaf86599792fa9c3fe4689") == [
"34",
"97",
"32",
]
slicer = PathSlicer("/", "/0:1/0:5/") # trailing '/' are ignored
assert slicer.check_config() is None
assert len(slicer) == 2
assert (
slicer.get_path("34973274ccef6ab4dfaaf86599792fa9c3fe4689")
== "/3/34973/34973274ccef6ab4dfaaf86599792fa9c3fe4689"
)
assert (
slicer.get_directory("34973274ccef6ab4dfaaf86599792fa9c3fe4689") == "/3/34973"
)
assert slicer.get_slices("34973274ccef6ab4dfaaf86599792fa9c3fe4689") == [
"3",
"34973",
]
# funny one, with steps
slicer = PathSlicer("/", "0:6:2/1:7:2")
assert slicer.check_config() is None
assert slicer.get_slices("123456789".ljust(40, "0")) == ["135", "246"]
# reverse works too!
slicer = PathSlicer("/", "-1::-1")
assert slicer.check_config() is None
assert slicer.get_slices("34973274ccef6ab4dfaaf86599792fa9c3fe4689") == [
"34973274ccef6ab4dfaaf86599792fa9c3fe4689"[::-1]
]
def test_pathslicer_noop():
"test the 'empty' pathslicer"
slicer = PathSlicer("/", "")
assert len(slicer) == 0
assert slicer.check_config() is None
assert (
slicer.get_path("34973274ccef6ab4dfaaf86599792fa9c3fe4689")
== "/34973274ccef6ab4dfaaf86599792fa9c3fe4689"
)
def test_pathslicer_bad_hash():
slicer = PathSlicer("/", "0:2/2:4/4:6")
for hexhash in ("0" * 39, "0" * 41, ""):
with pytest.raises(AssertionError):
slicer.get_path(hexhash)
def test_pathslicer_check_config():
with pytest.raises(ValueError):
PathSlicer("/", "toto")
with pytest.raises(ValueError):
PathSlicer("/", "/1:2/a:b/")
assert PathSlicer("/", "0:40").check_config() is None
with pytest.raises(ValueError):
PathSlicer("/", "0:41").check_config()
assert PathSlicer("/", "40:").check_config() is None
with pytest.raises(ValueError):
PathSlicer("/", "41:").check_config()

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