tests/test_api.py

"""Tests for the FastAPI REST API layer."""

from __future__ import annotations

import json
import pytest
from fastapi.testclient import TestClient

from backend.app import app
from backend.deps import services
from agentic_core.project_store import ProjectStore
from agentic_core.artifacts import ArtifactStore
from agentic_core.orchestrator import ExecutionTracker, EventBus, Orchestrator
from agentic_core.llm import LLMService, FakeLLMProvider
from tests.helpers import discovery_output, build_handler


@pytest.fixture
def api_client(tmp_path, settings):
    # Override global services for hermetic testing
    fake_provider = FakeLLMProvider()
    fake_provider.set_handler(build_handler())
    
    app_settings = settings
    service = LLMService(fake_provider, app_settings)
    bus = EventBus()
    tracker = ExecutionTracker(app_settings.runs_dir)
    store = ProjectStore(app_settings.db_path)
    artifacts = ArtifactStore(app_settings.artifacts_dir)
    orchestrator = Orchestrator(service, bus, tracker, app_settings)
    
    services.settings = app_settings
    services.provider = fake_provider
    services.llm_service = service
    services.event_bus = bus
    services.tracker = tracker
    services.project_store = store
    services.artifact_store = artifacts
    services.orchestrator = orchestrator
    services.generation_tasks = {}

    client = TestClient(app)
    yield client


def test_health_check(api_client):
    response = api_client.get("/api/health")
    assert response.status_code == 200
    data = response.json()
    assert data["status"] == "healthy"
    assert "version" in data
    assert "provider" in data


def test_project_lifecycle_api(api_client):
    # 1. Create project
    create_resp = api_client.post("/api/projects", json={"business_idea": "Build a task manager app"})
    assert create_resp.status_code == 201
    proj_data = create_resp.json()
    project_id = proj_data["project_id"]
    assert proj_data["business_idea"] == "Build a task manager app"

    # 2. List projects
    list_resp = api_client.get("/api/projects")
    assert list_resp.status_code == 200
    assert project_id in list_resp.json()["projects"]

    # 3. Fetch project
    get_resp = api_client.get(f"/api/projects/{project_id}")
    assert get_resp.status_code == 200
    assert get_resp.json()["project_id"] == project_id

    # 4. Fetch runs (telemetry)
    runs_resp = api_client.get(f"/api/projects/{project_id}/runs")
    assert runs_resp.status_code == 200
    assert "runs" in runs_resp.json()

    # 5. Delete project
    del_resp = api_client.delete(f"/api/projects/{project_id}")
    assert del_resp.status_code == 200
    assert del_resp.json()["status"] == "deleted"

    # 6. Verify 404 after deletion
    get_again = api_client.get(f"/api/projects/{project_id}")
    assert get_again.status_code == 404