How to add Unit Test to Unity?

In general, everything is simple.

Suppose there is a class

public class MyTestClass { public int HP = 100; public void DecreaseHP(int value) { HP -= value; } } 

In the Assets folder, create an Editor folder (if you don’t have one yet). All files with tests should be located in the Editor folder, or in its sub-directories.

To create a test file on the Editor folder, press the RMB and select either Create → C# Script (long path) or Create → Editor Test C# Script

If you add the script to the second option, Unity will generate the class as it should be. If not, you need to know that

• need to connect namespace for tests using NUnit.Framework;
• All test methods must be marked with the attribute [Test]

You can also specify test attributes for the class, for example [TestFixture] , but this depends on ...

So, the minimum class for the test looks like this:

 using UnityEngine; using NUnit.Framework; public class NewEditorTest { [Test] public void SomeMethod() { } } 

In principle, this is enough for him to appear in the Unit Test Runner . Click Window → Unit Test Runner and watch. ¯ \ _ (ツ) _ / ¯

The test looks like this:

 // Имя метода желательно чтоб отражало, что проверяем, и каков результат ожидаем public void DecreaseHP_DescriptionOfWhatMethodWhouldDo() { var myTestClass = new MyTestClass(); myTestClass.HP = 10; myTestClass.DecreaseHP(2); // проверяем, что после манипуляций у нас значения совпадают Assert.AreEqual(8, myTestClass.HP); }