instrument sandbox docker runtime

test/test_docker_runtime.py

@@ -10,6 +10,7 @@ from docker.types import Mount
 
 from adapter.config.model import SandboxConfig
 from adapter.docker.runtime import DockerSandboxRuntime
+from adapter.observability.noop import NoopMetrics, NoopTracer
 from domain.error import SandboxError, SandboxStartError
 from domain.sandbox import SandboxSession, SandboxStatus
 
@@ -116,6 +117,18 @@ def build_config(tmp_path: Path) -> SandboxConfig:
     )
 
 
+def build_runtime(
+    config: SandboxConfig,
+    containers: FakeContainers,
+) -> DockerSandboxRuntime:
+    return DockerSandboxRuntime(
+        config,
+        FakeDockerClient(containers),
+        NoopMetrics(),
+        NoopTracer(),
+    )
+
+
 def test_runtime_create_applies_mount_policy_and_labels_with_canonical_chat_id(
     tmp_path: Path,
 ) -> None:
@@ -123,7 +136,7 @@ def test_runtime_create_applies_mount_policy_and_labels_with_canonical_chat_id(
     (tmp_path / 'dependencies').mkdir()
     (tmp_path / 'lambda-tools').mkdir()
     containers = FakeContainers()
-    runtime = DockerSandboxRuntime(config, FakeDockerClient(containers))
+    runtime = build_runtime(config, containers)
     created_at = datetime(2026, 4, 2, 12, 0, tzinfo=UTC)
     expires_at = created_at + timedelta(minutes=5)
 
@@ -181,7 +194,7 @@ def test_runtime_create_raises_start_error_when_container_id_is_missing(
     (tmp_path / 'dependencies').mkdir()
     (tmp_path / 'lambda-tools').mkdir()
     containers = FakeContainers(run_result=FakeContainer(''))
-    runtime = DockerSandboxRuntime(config, FakeDockerClient(containers))
+    runtime = build_runtime(config, containers)
 
     with pytest.raises(SandboxStartError) as excinfo:
         runtime.create(
@@ -199,7 +212,7 @@ def test_runtime_stop_ignores_missing_container(tmp_path: Path) -> None:
     config = build_config(tmp_path)
     containers = FakeContainers()
     containers.get_result = NotFound('missing')
-    runtime = DockerSandboxRuntime(config, FakeDockerClient(containers))
+    runtime = build_runtime(config, containers)
 
     runtime.stop('container-123')
 
@@ -210,7 +223,7 @@ def test_runtime_stop_wraps_docker_errors(tmp_path: Path) -> None:
     config = build_config(tmp_path)
     containers = FakeContainers()
     containers.get_result = DockerException('boom')
-    runtime = DockerSandboxRuntime(config, FakeDockerClient(containers))
+    runtime = build_runtime(config, containers)
 
     with pytest.raises(SandboxError) as excinfo:
         runtime.stop('container-123')
@@ -243,7 +256,7 @@ def test_runtime_list_active_sessions_reads_valid_labeled_containers(
             created_at='2026-04-02T12:01:00Z',
         ),
     ]
-    runtime = DockerSandboxRuntime(config, FakeDockerClient(containers))
+    runtime = build_runtime(config, containers)
 
     sessions = runtime.list_active_sessions()