AssemblyFixtureProviderAttribute Class

Definition

Namespace:

Microsoft.VisualStudio.TestTools.UnitTesting

Assembly:

MSTest.TestFramework.dll

Package:

MSTest.TestFramework v4.3.0

Source:

AssemblyFixtureProviderAttribute.cs

Indicates that the methods on the specified FixtureType annotated with AssemblyInitializeAttribute or AssemblyCleanupAttribute should be discovered and executed once per consuming test assembly, even when the methods are not declared in that test assembly itself.

[System.AttributeUsage(System.AttributeTargets.Assembly, AllowMultiple=true, Inherited=false)]
public sealed class AssemblyFixtureProviderAttribute : Attribute

[System.AttributeUsage(System.AttributeTargets.Assembly, AllowMultiple=true, Inherited=false)]
[System.Runtime.CompilerServices.Nullable(0)]
public sealed class AssemblyFixtureProviderAttribute : Attribute

[<System.AttributeUsage(System.AttributeTargets.Assembly, AllowMultiple=true, Inherited=false)>]
type AssemblyFixtureProviderAttribute = class
    inherit Attribute

[<System.AttributeUsage(System.AttributeTargets.Assembly, AllowMultiple=true, Inherited=false)>]
[<System.Runtime.CompilerServices.Nullable(0)>]
type AssemblyFixtureProviderAttribute = class
    inherit Attribute

Public NotInheritable Class AssemblyFixtureProviderAttribute
Inherits Attribute

Inheritance

Attribute

AssemblyFixtureProviderAttribute

Attributes

AttributeUsageAttribute NullableAttribute

Examples

// In Contoso.TestInfra.dll
[assembly: AssemblyFixtureProvider(typeof(GlobalFixtures))]

public static class GlobalFixtures
{
    [AssemblyInitialize]
    public static void Init(TestContext context) { /* ... */ }

    [AssemblyCleanup]
    public static void Cleanup() { /* ... */ }
}

Remarks

Apply this attribute at the assembly level on the library that exposes the shared fixture. Every test assembly that ends up loading the library at runtime will then pick up its AssemblyInitializeAttribute / AssemblyCleanupAttribute methods without the test project needing to declare anything itself.

If the consuming test assembly already declares its own AssemblyInitializeAttribute or AssemblyCleanupAttribute method, the local declaration always wins; methods contributed via AssemblyFixtureProviderAttribute only fill empty slots.

The attribute can be applied multiple times on the same assembly to expose more than one fixture type. The attribute can also be applied on the consuming test assembly itself to opt into fixtures defined in a third-party library that cannot be modified.

Constructors

Name	Description
AssemblyFixtureProviderAttribute(Type)	Initializes a new instance of the AssemblyFixtureProviderAttribute class.

Properties

Name	Description
FixtureType	Gets the type whose AssemblyInitializeAttribute and AssemblyCleanupAttribute methods are exposed.