Class Is

NUnit allows you to write test assertions in a more descriptive and human readable way using the Assert.That mechanism, where the first parameter is an object under test and the second parameter describes conditions that the object has to meet.

We have extended NUnit API with a custom constraint type and declared an overlay Is class. To resolve ambiguity between the original implementation and the custom one you must explicitly declare it with a using statement or via addressing through the full type name UnityEngine.TestTools.Constraints.Is.

Inheritance

object

Is

Is

Inherited Members

Is.EqualTo(object)

Is.SameAs(object)

Is.GreaterThan(object)

Is.GreaterThanOrEqualTo(object)

Is.AtLeast(object)

Is.LessThan(object)

Is.LessThanOrEqualTo(object)

Is.AtMost(object)

Is.TypeOf(Type)

Is.TypeOf<TExpected>()

Is.InstanceOf(Type)

Is.InstanceOf<TExpected>()

Is.AssignableFrom(Type)

Is.AssignableFrom<TExpected>()

Is.AssignableTo(Type)

Is.AssignableTo<TExpected>()

Is.EquivalentTo(IEnumerable)

Is.SubsetOf(IEnumerable)

Is.SupersetOf(IEnumerable)

Is.StringContaining(string)

Is.StringStarting(string)

Is.StringEnding(string)

Is.StringMatching(string)

Is.SamePath(string)

Is.SubPathOf(string)

Is.SamePathOrUnder(string)

Is.InRange(IComparable, IComparable)

Is.Not

Is.All

Is.Null

Is.True

Is.False

Is.Positive

Is.Negative

Is.Zero

Is.NaN

Is.Empty

Is.Unique

Is.BinarySerializable

Is.XmlSerializable

Is.Ordered

object.Equals(object)

object.Equals(object, object)

object.GetHashCode()

object.GetType()

object.MemberwiseClone()

object.ReferenceEquals(object, object)

object.ToString()

Namespace: UnityEngine.TestTools.Constraints

Assembly: UnityEngine.TestRunner.dll

Syntax

public class Is : Is

Methods

AllocatingGCMemory()

A constraint type that invokes the delegate you provide as the parameter of Assert.That and checks whether it causes any GC memory allocations.

Declaration

public static AllocatingGCMemoryConstraint AllocatingGCMemory()

Returns

Type	Description
AllocatingGCMemoryConstraint	An AllocationGCMemoryConstrain.

Examples

using Is = UnityEngine.TestTools.Constraints.Is;

class MyTestClass
{
    [Test]
    public void MyTest()
    {
        Assert.That(() => {
        var i = new int[500];
        }, Is.AllocatingGCMemory());
    }
}