Add LocalTest attribute and discoverer

src/Xunit.Categories/LocalTestAttribute.cs

@@ -0,0 +1,31 @@
+using System;
+using Xunit.Sdk;
+
+namespace Xunit.Categories
+{
+	/// <summary>
+	/// For tests that should only be executed locally and excluded from automated pipeline runs
+	/// </summary>
+	/// <example>trying out LINQ for the first time, writing a piece of code to understand IEnumerable.Take and Skip.</example>
+	[TraitDiscoverer(LocalTestDiscoverer.DiscovererTypeName, DiscovererUtil.AssemblyName)]
+	[AttributeUsage(AttributeTargets.Class | AttributeTargets.Method, AllowMultiple = true)]
+	public class LocalTestAttribute:Attribute,ITraitAttribute
+	{
+		public LocalTestAttribute(string id)
+		{
+			this.Id = id;
+		}
+
+		public LocalTestAttribute(long id)
+		{
+			this.Id = id.ToString();
+		}
+
+		public LocalTestAttribute()
+		{
+
+		}
+
+		public string Id { get; }
+	}
+}

src/Xunit.Categories/LocalTestDiscoverer.cs

@@ -0,0 +1,23 @@
+using System.Collections.Generic;
+using Xunit.Abstractions;
+using Xunit.Sdk;
+
+namespace Xunit.Categories
+{
+	public class LocalTestDiscoverer : ITraitDiscoverer
+	{
+		internal const string DiscovererTypeName = DiscovererUtil.AssemblyName + "." + nameof(LocalTestDiscoverer);
+
+		public IEnumerable<KeyValuePair<string, string>> GetTraits(IAttributeInfo traitAttribute)
+		{
+			var id = traitAttribute.GetNamedArgument<string>("Id");
+
+
+			yield return new KeyValuePair<string, string>("Category", "LocalTest");
+
+			if (!string.IsNullOrWhiteSpace(id))
+				yield return new KeyValuePair<string, string>("LocalTest", id);
+
+		}
+	}
+}

test/Xunit.Categories.Test/Scratch.cs

@@ -92,5 +92,14 @@ public void TestTestCase()
         {
             throw new NotImplementedException("I'm not that important, all the world knows about me, I'll be fixed in 2030");
         }
+
+        [Fact]
+        [LocalTest]
+        [LocalTest(666)]
+        [LocalTest("666 a")]
+        public void TestLocalTest()
+        {
+	        throw new NotImplementedException("I'm not that important, all the world knows about me, I'll be fixed in 2030");
+        }
     }
 }