package fingerprint

import "testing"

// TestFingerprint_Basic ensures the Fingerprint function executes without error
// and returns a Result with the default OS placeholder.
func TestFingerprint_Basic(t *testing.T) {
	res, err := Fingerprint("127.0.0.1")
	if err != nil {
		t.Fatalf("Fingerprint returned error: %v", err)
	}
	if res == nil {
		t.Fatalf("Fingerprint returned nil result")
	}
	if res.OS != "Unknown" {
		t.Fatalf("Expected OS to be 'Unknown', got %s", res.OS)
	}
	// The test does not require any open ports; an empty OpenPorts slice is acceptable.
}