v2 v3   Error

xUnit9000

"Type must have non-obsolete public constructor"

Cause

A violation of this rule occurs when a type needs to have a non-obsolete, non-static public constructor that matches a specific pattern, but none of the available constructors meet the requirements.

Reason for rule

The code generator needs to call the constructor with a specific set of arguments (or an empty argument list), but there is no constructor that meets the requirement.

How to fix violations

To fix a violation of this rule, create a constructor that meets the requirements.

Examples

Violates

Assembly fixture

using Xunit;

[assembly: AssemblyFixture(typeof(MyAssemblyFixture))]

public class MyAssemblyFixture
{
    public MyAssemblyFixture(int x)
    { /*...*/ }
}

error xUnit9000: Type 'MyAssemblyFixture' must have a non-obsolete public constructor: public MyAssemblyFixture()

Test framework

[assembly: TestFramework(typeof(MyTestFramework))]

public class MyTestFramework : ITestFramework
{
    public MyTestFramework(int x)
    { /*...*/ }

    // ...implementation of ITestFramework...
}

error xUnit9000: Type 'MyTestFramework' must have a non-obsolete public constructor: public MyTestFramework(string? configFileName)

Does not violate

Assembly fixture

using Xunit;

[assembly: AssemblyFixture(typeof(MyAssemblyFixture))]

public class MyAssemblyFixture
{
    public MyAssemblyFixture()
    { /*...*/ }
}

Test framework

[assembly: TestFramework(typeof(MyTestFramework))]

public class MyTestFramework : ITestFramework
{
    public MyTestFramework(string? configFileName)
    { /*...*/ }

    // ...implementation of ITestFramework...
}