FLTFY10: AutoInitializeWith ignored when SkipAutoInitialization is present

Type Name	FLTFY10_SkipAutoInitializationAttributeAnalyzer
Diagnostic Id	FLTFY10
Category	Usage
Severity	Info
Is Enabled By Default	Yes

Cause

Both SkipAutoInitialization and AutoInitializeWith are applied to the same type.

Rule Description

SkipAutoInitialization indicates that a type cannot be automatically instantiated. When AutoInitializeWith is also applied to the same type, the skip attribute takes precedence and the auto initiation path is ignored. The analyzer highlights the conflict to avoid confusion.

For example:

[AutoInitializeWith(nameof(Default))]
[SkipAutoInitialization]
public sealed class Dependent
{
    public static Dependent Default => new();
}

In this scenario, the Default property will not be used because the type explicitly opts out of auto initialization.

How to Fix Violations

Remove the AutoInitializeWith attribute when SkipAutoInitialization is present, or remove SkipAutoInitialization if the type should be eligible for auto initiation.

[AutoInitializeWith(nameof(Default))]
public sealed class Dependent
{
    public static Dependent Default => new();
}

How to Suppress Violations

It is not recommended to suppress the rule. Instead, decide whether or not the type should use AutoInitializeWith or SkipAutoInitialization. Once the decision is made, remove the other attribute.

If suppression is desired, one of the following approaches can be used:

#pragma warning disable FLTFY10 // AutoInitializeWith ignored when SkipAutoInitialization is present
[AutoInitializeWith(nameof(Default))]
[SkipAutoInitialization]
public sealed class Dependent
#pragma warning restore FLTFY10 // AutoInitializeWith ignored when SkipAutoInitialization is present

or alternatively:

using System.Diagnostics.CodeAnalysis;
using Fluentify;

[AutoInitializeWith(nameof(Default))]
[SkipAutoInitialization]
[SuppressMessage("Design", "FLTFY10:AutoInitializeWith ignored when SkipAutoInitialization is present", Justification = "Explanation for suppression")]
public sealed class Dependent

How to Disable FLTFY09

It is not recommended to disable the rule, as this may result in some confusion if expected extension methods are not present.

# Disable FLTFY10: AutoInitializeWith ignored when SkipAutoInitialization is present
[*.cs]
dotnet_diagnostic.FLTFY10.severity = none