Expose the ability to attach categories to test methods even to the c…

…one world.

Source/Cone/IHaveCategories.cs

@@ -0,0 +1,9 @@
+using System.Collections.Generic;
+
+namespace Cone
+{
+	public interface IHaveCategories
+	{
+		IEnumerable<string> Categories { get; }
+	}
+}

Source/Cone/ITestContext.cs

@@ -1,4 +1,4 @@
-using Cone.Core;
+using Cone.Core;
 
 namespace Cone
 {

Source/Cone/ITestDescription.cs

@@ -1,10 +1,9 @@
-using System.Collections.Generic;
+using System.Collections.Generic;
 
 namespace Cone
 {
-    public interface IFixtureDescription
+    public interface IFixtureDescription : IHaveCategories
     {
-        IEnumerable<string> Categories { get; }
         string SuiteName { get; }
         string SuiteType { get; }
         string TestName { get; }

Source/Cone/Runners/ConeTestMethodContext.cs

@@ -15,8 +15,10 @@ public class ConeTestMethodContext : IConeAttributeProvider
 		public readonly IReadOnlyCollection<string> Categories;
 		public readonly ExpectedTestResult ExpectedResult;
 
-		public static ConeTestMethodContext Attributes(object[] attributes) => 
-			new ConeTestMethodContext(ExpectedTestResult.None, Null.Categories, attributes);
+		public static ConeTestMethodContext Attributes(object[] attributes) {  
+			var categories = attributes.OfType<IHaveCategories>().SelectMany(x => x.Categories).ToArray();
+			return new ConeTestMethodContext(ExpectedTestResult.None, categories.Length == 0 ? Null.Categories : categories, attributes);
+		}
 
 		public ConeTestMethodContext(ExpectedTestResult result, IReadOnlyCollection<string> cats, object[] attributes) : this(null, result, cats, attributes) { }
 

Source/Version.cs

@@ -2,5 +2,5 @@
 using System.Runtime.InteropServices;
 
 [assembly: ComVisible(false)]
-[assembly: AssemblyVersion("2018.07.10")]
-[assembly: AssemblyInformationalVersion("2018.07.10")]
+[assembly: AssemblyVersion("2018.07.31")]
+[assembly: AssemblyInformationalVersion("2018.07.31")]

Specs/Cone.Specs/Runners/ConeTestMethodContextSpec.cs

@@ -0,0 +1,24 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using Cone.Runners;
+
+namespace Cone.Specs.Runners
+{
+	[Describe(typeof(ConeTestMethodContext))]
+    public class ConeTestMethodContextSpec
+    {
+		class MyCategories : IHaveCategories
+		{
+			public string[] Categories;
+			IEnumerable<string> IHaveCategories.Categories => Categories;
+		}
+
+		public void extracts_categories_from_attributes() {
+			Check.With(() => ConeTestMethodContext.Attributes(new[] { new MyCategories { Categories = new[] { "MyCat" } } }))
+				.That(context => context.Categories.Contains("MyCat"));
+		}
+    }
+}