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fix: support SHA-256 zero OIDs in pre-push #3721

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tianrking wants to merge 1 commit into from
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fix: support SHA-256 zero OIDs in pre-push #3721

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9 changes: 7 additions & 2 deletions pre_commit/commands/hook_impl.py
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Original file line number Diff line number Diff line change
Expand Up @@ -12,6 +12,11 @@
from pre_commit.store import Store

Z40 = '0' * 40
Z64 = '0' * 64


def _is_zero_oid(oid: str) -> bool:
return oid in {Z40, Z64}


def _run_legacy(
Expand Down Expand Up @@ -128,9 +133,9 @@ def _pre_push_ns(
for line in stdin.decode().splitlines():
parts = line.rsplit(maxsplit=3)
local_branch, local_sha, remote_branch, remote_sha = parts
if local_sha == Z40:
if _is_zero_oid(local_sha):
continue
elif remote_sha != Z40 and _rev_exists(remote_sha):
elif not _is_zero_oid(remote_sha) and _rev_exists(remote_sha):
return _ns(
'pre-push', color,
from_ref=remote_sha, to_ref=local_sha,
Expand Down
5 changes: 3 additions & 2 deletions tests/commands/hook_impl_test.py
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Original file line number Diff line number Diff line change
Expand Up @@ -336,12 +336,13 @@ def test_pushing_orphan_branch(push_example):
assert ns.all_files is True


def test_run_ns_pre_push_deleting_branch(push_example):
@pytest.mark.parametrize('zero_oid', (hook_impl.Z40, hook_impl.Z64))
def test_run_ns_pre_push_deleting_branch(push_example, zero_oid):
src, src_head, clone, _ = push_example

with cwd(clone):
args = ('origin', src)
stdin = f'(delete) {hook_impl.Z40} refs/heads/b {src_head}'.encode()
stdin = f'(delete) {zero_oid} refs/heads/b {src_head}'.encode()
ns = hook_impl._run_ns('pre-push', False, args, stdin)

assert ns is None
Expand Down
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