kaizen-agentic/tests/test_registry_lazy_load.py

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"""Registry lazy-loading performance tests (WP-0001 T06)."""
from __future__ import annotations
from pathlib import Path
from unittest.mock import patch
import pytest
from kaizen_agentic.installer import AgentInstaller, InstallationConfig
from kaizen_agentic.registry import AgentDefinition, AgentRegistry
def _write_agent(path: Path, name: str) -> None:
path.write_text(
f"""---
name: {name}
description: Agent {name}
category: testing
---
# {name}
""",
encoding="utf-8",
)
@pytest.fixture
def large_registry(tmp_path: Path) -> AgentRegistry:
agents_dir = tmp_path / "agents"
agents_dir.mkdir()
for index in range(15):
_write_agent(agents_dir / f"agent-agent-{index}.md", f"agent-{index}")
_write_agent(agents_dir / "agent-tdd-workflow.md", "tdd-workflow")
return AgentRegistry(agents_dir)
def test_registry_indexes_without_full_parse(large_registry: AgentRegistry):
assert len(large_registry.agent_names()) == 16
assert large_registry._agents == {}
def test_get_agent_loads_only_requested_agent(large_registry: AgentRegistry):
with patch.object(
AgentDefinition,
"from_file",
wraps=AgentDefinition.from_file,
) as mock_from_file:
agent = large_registry.get_agent("tdd-workflow")
assert agent is not None
assert agent.name == "tdd-workflow"
assert mock_from_file.call_count == 1
def test_install_single_agent_parses_minimal_subset(
large_registry: AgentRegistry, tmp_path: Path
):
installer = AgentInstaller(large_registry)
project_dir = tmp_path / "project"
with patch.object(
AgentDefinition,
"from_file",
wraps=AgentDefinition.from_file,
) as mock_from_file:
results = installer.install_agents(
["tdd-workflow"],
InstallationConfig(
target_dir=project_dir,
create_backup=False,
update_docs=False,
),
)
assert results["tdd-workflow"] == "INSTALLED"
assert (project_dir / "agents" / "agent-tdd-workflow.md").exists()
# resolve_dependencies loads only the target agent, not the full fleet
assert mock_from_file.call_count == 1