How to disable specific Code Analysis Warning for entire class

Question

I'm trying to disable a code analysis rule across an entire class, but NOT for the entire project, just a single class. In the example below, the build generates a CA1822 warning because it thinks that the unit test methods should be static.

The fix is to add the following attribute to each unit test method: [System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Performance", "CA1822:MarkMembersAsStatic")]

However, that's cumbersome and clutters a class with many unit tests.

I've tried:

1. Moving the attribute to the class
2. Wrapping all of the methods in

#pragma warning disable CA1822

#pragma warning restore CA1822

Neither of these two approaches have worked.

public class TestClass
{
    public TestClass()
    {
        // some setup here
    }

    [Fact]
    public void My_Unit_Test1()
    {
        // the 'this' parameter is never used, causes CA warning 1822
    }

    [Fact]
    public void My_Unit_Test2()
    {
        // the 'this' parameter is never used, causes CA warning 1822
    }
}

Using VS2015 Update 2, .net 4.61, and the new Code Analysis Analyzers.

Answer 1

Click the light bulb icon [💡] or press Ctrl + . combination. This should open a context menu like bellow.

Then select Suppress or Configure issues > Suppress XXX > in Suppression File menu item. It will create GlobalSuppression.cs file if not exists and add a new line to it.

By default it will only suppress warning for selected member (method). You can change Scope to type and Target to full class name (eg: Project.Domain.MyAwesomeClass).

Here's an example:

[assembly: SuppressMessage("Design", "CA1062:Validate arguments of public methods", Justification = "This parameter of extension methods are always not null.", Scope = "type", Target = "Fonibo.Identity.Extensions.ClaimsIdentityExtension")]