//go:build !cgo

package backend

import (
	"context"
	"testing"
)

// TestStartHeartbeat_StubNoOp verifies the no-CGO stub for StartHeartbeat
// is a no-op that does not panic or return an error.
func TestStartHeartbeat_StubNoOp(t *testing.T) {
	// Should not panic and completes immediately
	StartHeartbeat(context.Background())
}

// TestEvalSelectForHost_StubErrNoCGO verifies the no-CGO stub for
// EvalSelectForHost returns errNoCGO, blocking callers from using
// select expressions without the real CGO backend.
func TestEvalSelectForHost_StubErrNoCGO(t *testing.T) {
	err := EvalSelectForHost("host01", "mem>4")
	if err != errNoCGO {
		t.Errorf("EvalSelectForHost stub should return errNoCGO, got %v", err)
	}
}

// TestCleanup_StubNoOp verifies the no-CGO stub for Cleanup
// is a no-op that does not panic (the real CGO version frees C resources).
func TestCleanup_StubNoOp(t *testing.T) {
	// Should not panic and completes immediately
	Cleanup()
}

// TestRegisterToBackend_StubSingleHost verifies the stub returns errNoCGO
// for a single-host BackendConfig (no Peers).
func TestRegisterToBackend_StubSingleHost(t *testing.T) {
	err := RegisterToBackend(&BackendConfig{
		Address: "ctrl01",
		Port:    9990,
		From:    "xce_apiserver",
		Key:     "keepsecret$",
	})
	if err != errNoCGO {
		t.Errorf("expected errNoCGO, got %v", err)
	}
}

// TestRegisterToBackend_StubWithPeers verifies the stub returns errNoCGO
// even when Peers are configured (HA mode), since CGO is not available.
func TestRegisterToBackend_StubWithPeers(t *testing.T) {
	err := RegisterToBackend(&BackendConfig{
		Peers: []string{"ctrl01:9990", "ctrl02:9990"},
		From:  "xce_apiserver",
		Key:   "keepsecret$",
	})
	if err != errNoCGO {
		t.Errorf("expected errNoCGO with peers configured, got %v", err)
	}
}