[fix] restart gap

test/test_docker_runtime.py

@@ -11,7 +11,7 @@ from docker.types import Mount
 from adapter.config.model import SandboxConfig
 from adapter.docker.runtime import DockerSandboxRuntime
 from domain.error import SandboxError, SandboxStartError
-from domain.sandbox import SandboxStatus
+from domain.sandbox import SandboxSession, SandboxStatus
 
 CHAT_ID = UUID('123e4567-e89b-12d3-a456-426614174000')
 NON_CANONICAL_CHAT_ID = '123E4567E89B12D3A456426614174000'
@@ -27,6 +27,19 @@ class FakeContainer:
         self.stop_calls += 1
 
 
+class FakeListedContainer(FakeContainer):
+    def __init__(
+        self,
+        container_id: str,
+        *,
+        labels: dict[str, str],
+        created_at: str,
+    ) -> None:
+        super().__init__(container_id)
+        self.labels = labels
+        self.attrs = {'Created': created_at}
+
+
 class RunKwargs(TypedDict):
     detach: bool
     labels: dict[str, str]
@@ -42,8 +55,10 @@ class FakeContainers:
     def __init__(self, run_result: FakeContainer | None = None) -> None:
         self.run_calls: list[RunCall] = []
         self.get_calls: list[str] = []
+        self.list_calls: list[dict[str, object]] = []
         self.run_result = run_result or FakeContainer('container-123')
         self.get_result: FakeContainer | Exception | None = None
+        self.list_result: list[object] = []
 
     def run(
         self,
@@ -73,6 +88,10 @@ class FakeContainers:
             raise AssertionError('missing get result')
         return self.get_result
 
+    def list(self, *, filters: dict[str, list[str]]) -> list[object]:
+        self.list_calls.append({'filters': filters})
+        return self.list_result
+
 
 class FakeDockerClient(DockerClient):
     def __init__(self, containers: FakeContainers) -> None:
@@ -197,3 +216,47 @@ def test_runtime_stop_wraps_docker_errors(tmp_path: Path) -> None:
         runtime.stop('container-123')
 
     assert str(excinfo.value) == 'sandbox_stop_failed'
+
+
+def test_runtime_list_active_sessions_reads_valid_labeled_containers(
+    tmp_path: Path,
+) -> None:
+    config = build_config(tmp_path)
+    containers = FakeContainers()
+    expires_at = datetime(2026, 4, 2, 12, 5, tzinfo=UTC)
+    containers.list_result = [
+        FakeListedContainer(
+            'container-123',
+            labels={
+                'session_id': str(SESSION_ID),
+                'chat_id': str(CHAT_ID),
+                'expires_at': expires_at.isoformat(),
+            },
+            created_at='2026-04-02T12:00:00Z',
+        ),
+        FakeListedContainer(
+            'container-bad',
+            labels={
+                'chat_id': str(CHAT_ID),
+                'expires_at': expires_at.isoformat(),
+            },
+            created_at='2026-04-02T12:01:00Z',
+        ),
+    ]
+    runtime = DockerSandboxRuntime(config, FakeDockerClient(containers))
+
+    sessions = runtime.list_active_sessions()
+
+    assert sessions == [
+        SandboxSession(
+            session_id=SESSION_ID,
+            chat_id=CHAT_ID,
+            container_id='container-123',
+            status=SandboxStatus.RUNNING,
+            created_at=datetime(2026, 4, 2, 12, 0, tzinfo=UTC),
+            expires_at=expires_at,
+        )
+    ]
+    assert containers.list_calls == [
+        {'filters': {'label': ['session_id', 'chat_id', 'expires_at']}}
+    ]