roslyn-analyzers | Roslyn is the compiler platform | Code Editor library

Short question: How to setup a roslyn code analyzer project with a working unit-test project in Visual Studio 2019 v16.6.2?

A few months (and a few Visual Studio updates) ago I experimented with setting up a code analyzer project using the "Analyzer with Code Fix (.NET Standard)" project template. It worked well and just as documented in all the available how-tos.

Today (VS2019 v16.6.2) I wanted to start a real analyzer project, but unfortunatly the updated template seems to be broken or to be released with a lot of unfinished work in progress. (One minor issue is the fact that suddenly the package manager seems unable to restore packages, because it does not like the vsix project using the same assembly name as the analyzer project.)

The template contains a unit-test project. In the earlier version I experimented with, this test project contained a lot of code that acted like a test infrastructure to make it easy for developers to test the analyzer against real code.

All this code now seems to be integrated in a lot of language-specific nuget packages. But these packages

• are no longer hosted in https://dotnet.myget.org/F/roslyn/api/v3/index.json, but in https://dotnet.myget.org/F/roslyn-analyzers/api/v3/index.json instead
• they are all pre-release versions and
• they do not contain the expected classes/code.

These are the package references apparently required (ommitted test framework packages):

• Microsoft.CodeAnalysis.CSharp.Analyzer.Testing.MSTest v1.0.1-beta1.20384.1
• Microsoft.CodeAnalysis.CSharp.CodeFix.Testing.MSTest v1.0.1-beta1.20384.1
• Microsoft.CodeAnalysis.CSharp.CodeRefactoring.Testing.MSTest v1.0.1-beta1.20384.1

And this is the sample unit-test code:

I want to add rules to a .net core project. In a .net normal project I have the facility to edit directly the web.config file

Actually I need to achieve this, in a .net core project

I have a couple of projects where under Dependencies there are one or two branches of code analyzers like this:

I tried the right mouse click on every branch as explaind here but there is no option to configure them and I also searched for *.ruleset files insinde the solution, I also check the packages as shown in the docs but there is nothing like that anywhere.

There is also nothing suspicious in the .csproj files, just some nuget packages that I've installed but nothing analyzer related.

How do I get rid of them? They give me warnings when I reference such projects in other solutions and nuget restore doesn't fix it either:

I have no idea where they come from. Some projects have them and others don't. However, they seem to somehow be related to ASP.NET Core or MVC packages that are installed in those projects.

Analyzer feedback severity levels are explained in the documentation. But in my eyes silent and none severity levels seem both to have the same meaning - "I don't want this rule checked for":

For none:

Suppressed completely.

For silent:

Non-visible to user. The diagnostic is reported to the IDE diagnostic engine, however.

What exactly is the effect of "reporting to IDE" for VS2019 and in what scenarios should one prefer silent over none?

When running Code-analysis ([Roslyn] Microsoft.CodeAnalysis.FxCopAnalyzers) on my solution I get the following warning:

I'd like to disable code inspections for certain projects (like tests or quick-n-dirty proof-of-concept ones).

The section Suppressing code inspections in specific scope goes only up to the file level by suggesting this:

Inspection [name of inspection] | Disable once with comment | Disable all inspection in file - this option inserts a single comment - ReSharper disable All in the beginning of the file. This comment suppresses all inspections the file.

What would I have to do to go even further and do the same but for an entire project?

This means:

• not a solution
• not a file
• not a method
• not entirely
• not roslyn-analyzers
• but just a single project

We have a custom ruleset (created from an earlier .net framework project)

I added the ruleset to our new project's file:

Where can I find Roslyn analyzer template to use it by Rider?

There is no template in Rider as for VisualStudio mentioned at roslyn-analyzers-docs. Also this template is not presented in Available templates for dotnet.