from opentelemetry.sdk.trace import TracerProvider

from app import telemetry


def test_telemetry_is_fail_open_without_endpoint(monkeypatch) -> None:
    monkeypatch.delenv("OTEL_EXPORTER_OTLP_ENDPOINT", raising=False)
    monkeypatch.setattr(telemetry, "_runtime", None)

    assert telemetry.init_telemetry("sms-test") is None


def test_structlog_processor_adds_active_trace_context() -> None:
    tracer = TracerProvider().get_tracer("test")

    with tracer.start_as_current_span("sms.operation"):
        result = telemetry.add_trace_context(None, "info", {"event": "sms.safe"})

    assert result["event"] == "sms.safe"
    assert len(result["trace_id"]) == 32
    assert len(result["span_id"]) == 16