sand-boxer/tests/test_runtime_builder.py

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import hashlib
import importlib.util
from pathlib import Path
import pytest
spec = importlib.util.spec_from_file_location(
"runtime_builder", Path(__file__).parents[1] / "scripts/build-rein-runtime.py"
)
builder = importlib.util.module_from_spec(spec)
spec.loader.exec_module(builder)
def test_claude_copy_is_pinned_and_excludes_home(tmp_path):
source = tmp_path / "native"
source.write_bytes(b"\x7fELFtest artifact, never executed")
(tmp_path / "credentials.json").write_text("must not enter artifact")
output = tmp_path / "runtime"
(output / "bin").mkdir(parents=True)
digest = hashlib.sha256(source.read_bytes()).hexdigest()
metadata = builder.install_claude(output, source, digest, "test-version")
assert metadata["sha256"] == digest
assert metadata["path"] == "/opt/sandboxer/runtime/bin/claude"
assert list((output / "bin").iterdir()) == [output / "bin/claude"]
assert (output / "bin/claude").read_bytes() == source.read_bytes()
assert (output / "bin/claude").stat().st_mode & 0o777 == 0o755
assert not (output / "credentials.json").exists()
with pytest.raises(FileExistsError):
builder.install_claude(output, source, digest, "test-version")
def test_changed_binary_and_host_wrapper_refuse(tmp_path):
source = tmp_path / "binary"
source.write_bytes(b"#!/usr/bin/env node\n")
output = tmp_path / "runtime"
(output / "bin").mkdir(parents=True)
with pytest.raises(ValueError, match="digest mismatch"):
builder.install_claude(output, source, "0" * 64, "test-version")
digest = hashlib.sha256(source.read_bytes()).hexdigest()
with pytest.raises(ValueError, match="native ELF"):
builder.install_claude(output, source, digest, "test-version")
link = tmp_path / "link"
link.symlink_to(source)
with pytest.raises(ValueError, match="symlink"):
builder.install_claude(output, link, digest, "test-version")
assert not (output / "bin/claude").exists()
def test_incomplete_claude_pin_refuses_before_build(tmp_path):
with pytest.raises(ValueError, match="supplied together"):
builder.build(tmp_path / "out", tmp_path, tmp_path, claude_binary=tmp_path / "claude")
assert not (tmp_path / "out").exists()