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bot-bottle/tests/unit/test_docker_util_image.py
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Python

"""Unit: image_id / tag / push helpers in
bot_bottle.backend.docker.util (PRD 0023 chunk 4c additions).
Tests mock `subprocess.run` and assert on argv shape + parsing.
The actual docker round-trip is covered by the chunk 4c
integration smoke."""
from __future__ import annotations
import subprocess
import tempfile
import unittest
from pathlib import Path
from unittest.mock import patch
from bot_bottle.backend.docker import util as docker_mod
from bot_bottle.workspace import WorkspacePlan
def _ok(stdout: str = "", stderr: str = "") -> subprocess.CompletedProcess:
return subprocess.CompletedProcess(
args=[], returncode=0, stdout=stdout, stderr=stderr,
)
def _fail(stderr: str = "boom") -> subprocess.CompletedProcess:
return subprocess.CompletedProcess(
args=[], returncode=1, stdout="", stderr=stderr,
)
class TestImageId(unittest.TestCase):
def test_strips_trailing_newline(self):
# docker image inspect --format ... emits a trailing newline.
with patch.object(
docker_mod.subprocess, "run",
return_value=_ok(stdout="sha256:abcdef\n"),
) as run:
self.assertEqual(
"sha256:abcdef", docker_mod.image_id("bot-bottle-claude:latest")
)
argv = run.call_args.args[0]
self.assertEqual(
["docker", "image", "inspect", "--format", "{{.Id}}", "bot-bottle-claude:latest"],
argv,
)
def test_dies_on_inspect_failure(self):
with patch.object(
docker_mod.subprocess, "run", return_value=_fail("No such image"),
), patch.object(
docker_mod, "die", side_effect=SystemExit("die"),
) as die:
with self.assertRaises(SystemExit):
docker_mod.image_id("missing:tag")
die.assert_called_once()
self.assertIn("missing:tag", die.call_args.args[0])
class TestSave(unittest.TestCase):
def test_save_runs_docker_save(self):
with patch.object(
docker_mod.subprocess, "run", return_value=_ok(),
) as run:
docker_mod.save("bot-bottle-claude:latest", "/tmp/img.tar")
argv = run.call_args.args[0]
self.assertEqual(
["docker", "save", "bot-bottle-claude:latest", "-o", "/tmp/img.tar"],
argv,
)
class TestBuildImageWithCwd(unittest.TestCase):
def test_uses_workspace_plan_paths(self):
with tempfile.TemporaryDirectory(prefix="bb-docker-cwd.") as tmp:
workspace = WorkspacePlan(
enabled=True,
host_path=Path(tmp),
guest_home="/guest/home",
guest_path="/guest/home/workspace",
workdir="/guest/home/workspace",
)
with patch.object(docker_mod.subprocess, "run") as run:
docker_mod.build_image_with_cwd("derived:tag", "base:tag", workspace)
argv = run.call_args.args[0]
dockerfile = run.call_args.kwargs["input"]
self.assertEqual(["docker", "build", "-t", "derived:tag", "-f", "-", tmp], argv)
self.assertIn("FROM base:tag\n", dockerfile)
self.assertIn("COPY --chown=node:node . /guest/home/workspace\n", dockerfile)
self.assertIn("WORKDIR /guest/home/workspace\n", dockerfile)
if __name__ == "__main__":
unittest.main()