[Touch.Client] Add API to exclude tests based on categories.

The NUnitLite API to create test filters is very rudimentary (either subclass
TestFilter, or have NUnitLite create the filter based on an xml string), so we
can at least make it easy for consumers to exclude tests based on categories,
which we need to be able to do for our tests anyway.

NUnitLite/TouchRunner/ExcludedCategoryFilter.cs

@@ -0,0 +1,42 @@
+using System;
+using System.Collections.Generic;
+
+using NUnit.Framework.Internal;
+using NUnit.Framework.Interfaces;
+
+namespace MonoTouch.NUnit.UI {
+	class ExcludeCategoryFilter : TestFilter {
+		public HashSet<string> ExcludedCategories { get; private set; }
+
+		public ExcludeCategoryFilter (IEnumerable<string> categories)
+		{
+			ExcludedCategories = new HashSet<string> (categories);
+		}
+
+		public override TNode AddToXml (TNode parentNode, bool recursive)
+		{
+			throw new NotImplementedException ();
+		}
+
+		public override bool Match (ITest test)
+		{
+			var categories = test.Properties ["Category"];
+			if (categories != null) {
+				foreach (string cat in categories) {
+					if (ExcludedCategories.Contains (cat))
+						return false;
+				}
+			}
+
+			if (test.Parent != null)
+				return Match (test.Parent);
+
+			return true;
+		}
+
+		public override bool Pass (ITest test)
+		{
+			return Match (test);
+		}
+	}
+}

NUnitLite/TouchRunner/TouchRunner.cs

@@ -23,6 +23,7 @@
 using System.Collections;
 using System.Collections.Generic;
 using System.Net.Sockets;
+using System.Linq;
 using System.Reflection;
 using System.Runtime.InteropServices;
 using System.Threading;
@@ -84,6 +85,8 @@ public ITestFilter Filter {
 			set { filter = value; }
 		}
 
+		public HashSet<string> ExcludedCategories { get; set; }
+
 		public bool TerminateAfterExecution {
 			get { return TouchOptions.Current.TerminateAfterExecution && !connection_failure; }
 			set { TouchOptions.Current.TerminateAfterExecution = value; }
@@ -591,6 +594,10 @@ public void Run (Test test)
 
 #if NUNITLITE_NUGET
 			var filter = new MatchTestFilter { MatchTest = test };
+			if (this.filter != null)
+				filter.AndFilters.Add (this.filter);
+			if (ExcludedCategories != null)
+				filter.AndFilters.Add (new ExcludeCategoryFilter (ExcludedCategories));
 			foreach (var runner in runners)
 				runner.Run (this, filter);
 
@@ -878,6 +885,7 @@ protected override void ExecuteOnMainThread (Action action)
 	// A filter that matches a specific test
 	class MatchTestFilter : TestFilter {
 		public ITest MatchTest;
+		public List<ITestFilter> AndFilters = new List<ITestFilter> ();
 
 #if NUNITLITE_NUGET
 		public override TNode AddToXml (TNode parentNode, bool recursive)
@@ -888,6 +896,12 @@ public override TNode AddToXml (TNode parentNode, bool recursive)
 
 		public override bool Match (ITest test)
 		{
+			if (AndFilters != null) {
+				// If any of the And filters returns false, then return false too.
+				if (AndFilters.Any ((v) => !v.Pass (test)))
+					return false;
+			}
+
 			return IsMatch (test, MatchTest);
 		}
 

Touch.Client/dotnet/iOS/Touch.Client-iOS.dotnet.csproj

@@ -9,6 +9,9 @@
     <AssemblyName>Touch.Client</AssemblyName>
   </PropertyGroup>
   <ItemGroup>
+    <Compile Include="..\..\NUnitLite\TouchRunner\ExcludedCategoryFilter.cs">
+      <Link>ExcludedCategoryFilter.cs</Link>
+    </Compile>
     <Compile Include="..\..\NUnitLite\TouchRunner\HttpTextWriter.cs">
       <Link>HttpTextWriter.cs</Link>
     </Compile>

Touch.Client/dotnet/tvOS/Touch.Client-tvOS.dotnet.csproj

@@ -9,6 +9,9 @@
     <AssemblyName>Touch.Client</AssemblyName>
   </PropertyGroup>
   <ItemGroup>
+    <Compile Include="..\..\NUnitLite\TouchRunner\ExcludedCategoryFilter.cs">
+      <Link>ExcludedCategoryFilter.cs</Link>
+    </Compile>
     <Compile Include="..\..\NUnitLite\TouchRunner\HttpTextWriter.cs">
       <Link>HttpTextWriter.cs</Link>
     </Compile>

Touch.Client/iOS/Touch.Client-iOS.csproj

@@ -41,6 +41,9 @@
     <Folder Include="Resources\" />
   </ItemGroup>
   <ItemGroup>
+    <Compile Include="..\..\NUnitLite\TouchRunner\ExcludedCategoryFilter.cs">
+      <Link>ExcludedCategoryFilter.cs</Link>
+    </Compile>
     <Compile Include="..\..\NUnitLite\TouchRunner\HttpTextWriter.cs">
       <Link>HttpTextWriter.cs</Link>
     </Compile>

Touch.Client/macOS/full/Touch.Client-macOS-full.csproj

@@ -41,6 +41,9 @@
     <Folder Include="Resources\" />
   </ItemGroup>
   <ItemGroup>
+    <Compile Include="..\..\..\NUnitLite\TouchRunner\ExcludedCategoryFilter.cs">
+      <Link>ExcludedCategoryFilter.cs</Link>
+    </Compile>
     <Compile Include="..\..\..\NUnitLite\TouchRunner\HttpTextWriter.cs">
       <Link>HttpTextWriter.cs</Link>
     </Compile>

Touch.Client/macOS/mobile/Touch.Client-macOS-mobile.csproj

@@ -41,6 +41,9 @@
     <Folder Include="Resources\" />
   </ItemGroup>
   <ItemGroup>
+    <Compile Include="..\..\..\NUnitLite\TouchRunner\ExcludedCategoryFilter.cs">
+      <Link>ExcludedCategoryFilter.cs</Link>
+    </Compile>
     <Compile Include="..\..\..\NUnitLite\TouchRunner\HttpTextWriter.cs">
       <Link>HttpTextWriter.cs</Link>
     </Compile>

Touch.Client/tvOS/Touch.Client-tvOS.csproj

@@ -41,6 +41,9 @@
     <Folder Include="Resources\" />
   </ItemGroup>
   <ItemGroup>
+    <Compile Include="..\..\NUnitLite\TouchRunner\ExcludedCategoryFilter.cs">
+      <Link>ExcludedCategoryFilter.cs</Link>
+    </Compile>
     <Compile Include="..\..\NUnitLite\TouchRunner\HttpTextWriter.cs">
       <Link>HttpTextWriter.cs</Link>
     </Compile>

Touch.Client/watchOS/Touch.Client-watchOS.csproj

@@ -41,6 +41,9 @@
     <Folder Include="Resources\" />
   </ItemGroup>
   <ItemGroup>
+    <Compile Include="..\..\NUnitLite\TouchRunner\ExcludedCategoryFilter.cs">
+      <Link>ExcludedCategoryFilter.cs</Link>
+    </Compile>
     <Compile Include="..\..\NUnitLite\TouchRunner\HttpTextWriter.cs">
       <Link>HttpTextWriter.cs</Link>
     </Compile>