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microsoft / FeatureManagement-Dotnet

Microsoft.FeatureManagement provides standardized APIs for enabling feature flags within applications. Utilize this library to secure a consistent experience when developing applications that use patterns such as beta access, rollout, dark deployments, and more.
MIT License
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Fix build warning #462

Closed zhiyuanliang-ms closed 2 months ago

zhiyuanliang-ms commented 2 months ago

Why this PR?

Fix xUnit1031 warning.

Remove nullable property in example projects.

Visible changes

Update testcases to use async&await.

Update property.

zhiyuanliang-ms commented 2 months ago

/AzurePipeline run

rossgrambo commented 2 months ago

Incorrect nullable

What makes the nullable incorrect here?

zhiyuanliang-ms commented 2 months ago

What makes the nullable incorrect here?

@rossgrambo I am trying to fix these build warnings:

Microsoft.FeatureManagement -> C:\Users\zhiyuanliang\OneDrive - Microsoft\Desktop\Dev\FM\src\Microsoft.FeatureManagement\bin\Debug\netstandard2.1\Microsoft.FeatureManagement.dll C:\Users\zhiyuanliang\OneDrive - Microsoft\Desktop\Dev\FM\examples\TargetingConsoleApp\Identity\User.cs(10,23): warning CS8618: Non-nullable property 'Id' must contain a non-null value when exiting constructor. Consider declaring the property as nullable. [C:\Users\zhiyuanliang\OneDri ve - Microsoft\Desktop\Dev\FM\examples\TargetingConsoleApp\TargetingConsoleApp.csproj] C:\Users\zhiyuanliang\OneDrive - Microsoft\Desktop\Dev\FM\examples\TargetingConsoleApp\Identity\User.cs(12,36): warning CS8618: Non-nullable property 'Groups' must contain a non-null value when exiting constructor. Consider declaring the property as nullable. [C:\Users\zhiyuanliang\On eDrive - Microsoft\Desktop\Dev\FM\examples\TargetingConsoleApp\TargetingConsoleApp.csproj] C:\Users\zhiyuanliang\OneDrive - Microsoft\Desktop\Dev\FM\examples\TargetingConsoleApp\Identity\InMemoryUserRepository.cs(94,20): warning CS8619: Nullability of reference types in value of type 'Task<User?>' doesn't match target type 'Task'. [C:\Users\zhiyuanliang\OneDrive - Mic rosoft\Desktop\Dev\FM\examples\TargetingConsoleApp\TargetingConsoleApp.csproj] C:\Users\zhiyuanliang\OneDrive - Microsoft\Desktop\Dev\FM\examples\FeatureFlagDemo\Models\ErrorViewModel.cs(10,23): warning CS8618: Non-nullable property 'RequestId' must contain a non-null value when exiting constructor. Consider declaring the property as nullable. [C:\Users\zhiyuanl iang\OneDrive - Microsoft\Desktop\Dev\FM\examples\FeatureFlagDemo\FeatureFlagDemo.csproj] C:\Users\zhiyuanliang\OneDrive - Microsoft\Desktop\Dev\FM\examples\FeatureFlagDemo\HttpContextTargetingContextAccessor.cs(28,39): warning CS8600: Converting null literal or possible null value to non-nullable type. [C:\Users\zhiyuanliang\OneDrive - Microsoft\Desktop\Dev\FM\examples\Fe atureFlagDemo\FeatureFlagDemo.csproj] C:\Users\zhiyuanliang\OneDrive - Microsoft\Desktop\Dev\FM\examples\FeatureFlagDemo\HttpContextTargetingContextAccessor.cs(32,17): warning CS8602: Dereference of a possibly null reference. [C:\Users\zhiyuanliang\OneDrive - Microsoft\Desktop\Dev\FM\examples\FeatureFlagDemo\FeatureFlagDe mo.csproj] C:\Users\zhiyuanliang\OneDrive - Microsoft\Desktop\Dev\FM\examples\FeatureFlagDemo\HttpContextTargetingContextAccessor.cs(32,75): warning CS8600: Converting null literal or possible null value to non-nullable type. [C:\Users\zhiyuanliang\OneDrive - Microsoft\Desktop\Dev\FM\examples\Fe atureFlagDemo\FeatureFlagDemo.csproj] C:\Users\zhiyuanliang\OneDrive - Microsoft\Desktop\Dev\FM\examples\FeatureFlagDemo\HttpContextTargetingContextAccessor.cs(34,56): warning CS8600: Converting null literal or possible null value to non-nullable type. [C:\Users\zhiyuanliang\OneDrive - Microsoft\Desktop\Dev\FM\examples\Fe atureFlagDemo\FeatureFlagDemo.csproj] C:\Users\zhiyuanliang\OneDrive - Microsoft\Desktop\Dev\FM\examples\FeatureFlagDemo\HttpContextTargetingContextAccessor.cs(34,56): warning CS8604: Possible null reference argument for parameter 'result' in 'ValueTask.ValueTask(TargetingContext result)'. [C:\Users\zhiy uanliang\OneDrive - Microsoft\Desktop\Dev\FM\examples\FeatureFlagDemo\FeatureFlagDemo.csproj] C:\Users\zhiyuanliang\OneDrive - Microsoft\Desktop\Dev\FM\examples\FeatureFlagDemo\HttpContextTargetingContextAccessor.cs(55,26): warning CS8602: Dereference of a possibly null reference. [C:\Users\zhiyuanliang\OneDrive - Microsoft\Desktop\Dev\FM\examples\FeatureFlagDemo\FeatureFlagDe mo.csproj] C:\Users\zhiyuanliang\OneDrive - Microsoft\Desktop\Dev\FM\examples\FeatureFlagDemo\BrowserFilter.cs(44,32): warning CS8602: Dereference of a possibly null reference. [C:\Users\zhiyuanliang\OneDrive - Microsoft\Desktop\Dev\FM\examples\FeatureFlagDemo\FeatureFlagDemo.csproj]

There is inconsistent usage of nullable type. There are two options to fix these build warnings:

  1. Keep the nullable property in csproj file and add question marks for the type where the warnings occur.
  2. Remove the nullable property in csproj file and stop using nullable type.

I prefer the second option.

zhiyuanliang-ms commented 2 months ago

/AzurePipeline run

azure-pipelines[bot] commented 2 months ago
Azure Pipelines successfully started running 1 pipeline(s).
rossgrambo commented 2 months ago

I see. We're setting nullable true but not using the nullable ? everywhere where applicable.

<nullable>true</nullable> is automatically added in new projects. I'd prefer we keep it and add the question marks where needed.

zhiyuanliang-ms commented 2 months ago

@rossgrambo

I'd prefer we keep it and add the question marks where needed.

Then, too many changes are needed, especially for FeatureFlagDemo project. I don't think it's worthy because our feature management projects don't set property to true. Example projects just follow them.

zhiyuanliang-ms commented 2 months ago

@rossgrambo I will follow this PR #305 I will revert the change for RazorPages but keep the changes for other example projects.