Version: 2017.3
public static void IsTrue (bool condition);
public static void IsTrue (bool condition, string message);

Description

Asserts that the condition is true.

using UnityEngine;
using UnityEngine.Assertions;

public class AssertionExampleClass : MonoBehaviour { void Update() { //Make sure the Game Object is always in active state Assert.IsFalse(gameObject.activeSelf); } }