Files
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 unittest
from datetime import timezone
from unittest.mock import patch
from bot_bottle.backend.docker import util as docker_mod
def _ok(stdout: str = "", stderr: str = "") -> subprocess.CompletedProcess: # type: ignore
return subprocess.CompletedProcess(
args=[], returncode=0, stdout=stdout, stderr=stderr,
)
def _fail(stderr: str = "boom") -> subprocess.CompletedProcess: # type: ignore
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 TestImageCreatedAt(unittest.TestCase):
def test_parses_docker_timestamp_with_nanoseconds(self):
with patch.object(
docker_mod.subprocess, "run",
return_value=_ok(stdout="2026-07-06T15:33:47.123456789Z\n"),
) as run:
created = docker_mod.image_created_at("bot-bottle-claude:latest")
self.assertEqual(2026, created.year)
self.assertEqual(123456, created.microsecond)
self.assertEqual(timezone.utc, created.tzinfo)
self.assertEqual(
["docker", "image", "inspect", "--format", "{{.Created}}", "bot-bottle-claude:latest"],
run.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 TestCommitContainer(unittest.TestCase):
def test_runs_docker_commit(self):
with patch.object(
docker_mod.subprocess, "run", return_value=_ok(),
) as run, patch.object(docker_mod, "info"):
docker_mod.commit_container(
"bot-bottle-dev-abc12",
"bot-bottle-committed-dev-abc12:latest",
)
argv = run.call_args.args[0]
self.assertEqual(
[
"docker", "commit",
"bot-bottle-dev-abc12",
"bot-bottle-committed-dev-abc12:latest",
],
argv,
)
def test_dies_on_docker_commit_failure(self):
with patch.object(
docker_mod.subprocess, "run", return_value=_fail("No such container"),
), patch.object(
docker_mod, "die", side_effect=SystemExit("die"),
) as die:
with self.assertRaises(SystemExit):
docker_mod.commit_container("missing-container", "some:tag")
die.assert_called_once()
self.assertIn("missing-container", die.call_args.args[0])
def test_die_message_includes_image_tag(self):
with patch.object(
docker_mod.subprocess, "run", return_value=_fail("boom"),
), patch.object(
docker_mod, "die", side_effect=SystemExit("die"),
) as die:
with self.assertRaises(SystemExit):
docker_mod.commit_container("ctr", "my-tag:v1")
self.assertIn("my-tag:v1", die.call_args.args[0])
if __name__ == "__main__":
unittest.main()