"""Cubre los endpoints obligatorios del shape: /health y /metrics."""

from fastapi.testclient import TestClient


def test_health_returns_200_ok(client: TestClient) -> None:
    response = client.get("/health")
    assert response.status_code == 200
    assert response.json() == {"status": "ok"}


def test_health_propagates_correlation_id(client: TestClient) -> None:
    cid = "test-cid-12345"
    response = client.get("/health", headers={"X-Correlation-ID": cid})
    assert response.headers.get("X-Correlation-ID") == cid


def test_health_generates_correlation_id_when_absent(client: TestClient) -> None:
    response = client.get("/health")
    assert response.headers.get("X-Correlation-ID")


def test_metrics_endpoint_serves_prometheus_format(client: TestClient) -> None:
    response = client.get("/metrics")
    assert response.status_code == 200
    assert "text/plain" in response.headers.get("content-type", "")