Provides Unity-specific constraint types for use with NUnit's Assert.That method.
NUnit allows test authors to write assertions using the Assert.That()
method, where the first parameter is the object under test, and the second parameter describes the conditions that the object has to meet. These can often be expressed in a human-readable style, for example Assert.That(3, Is.Not.EqualTo(2))
.
Unity extends NUnit's mechanisms with some custom Unity-specific constraint types, and declares this "Is" class as an overlay on top of NUnit's. To resolve ambiguity between NUnit's own Is
class and Unity's, you must explicitly declare it in a using statement, like this:
using NUnit.Framework; using UnityEngine.TestTools.Constraints; using Is = UnityEngine.TestTools.Constraints.Is;
class MyTestClass { [Test] public void MyTest() { Assert.That(() => { var i = new int[500]; }, Is.AllocatingGCMemory()); } }
AllocatingGCMemory | Declares a constraint that the provided delegate allocates GC memory. |
Did you find this page useful? Please give it a rating:
Thanks for rating this page!
What kind of problem would you like to report?
Thanks for letting us know! This page has been marked for review based on your feedback.
If you have time, you can provide more information to help us fix the problem faster.
Provide more information
You've told us this page needs code samples. If you'd like to help us further, you could provide a code sample, or tell us about what kind of code sample you'd like to see:
You've told us there are code samples on this page which don't work. If you know how to fix it, or have something better we could use instead, please let us know:
You've told us there is information missing from this page. Please tell us more about what's missing:
You've told us there is incorrect information on this page. If you know what we should change to make it correct, please tell us:
You've told us this page has unclear or confusing information. Please tell us more about what you found unclear or confusing, or let us know how we could make it clearer:
You've told us there is a spelling or grammar error on this page. Please tell us what's wrong:
You've told us this page has a problem. Please tell us more about what's wrong:
Thank you for helping to make the Unity documentation better!
Your feedback has been submitted as a ticket for our documentation team to review.
We are not able to reply to every ticket submitted.