Remove dependency on System.Interactive for async tests.

Ix.NET/Source/System.Interactive.Async.Providers.Tests/System.Interactive.Async.Providers.Tests.csproj

@@ -14,7 +14,6 @@
 
   <ItemGroup>
     <ProjectReference Include="..\System.Interactive.Async.Providers\System.Interactive.Async.Providers.csproj" />
-    <ProjectReference Include="..\System.Interactive\System.Interactive.csproj" />
     <ProjectReference Include="..\System.Linq.Async\System.Linq.Async.csproj" />
   </ItemGroup>
 

Ix.NET/Source/System.Interactive.Async.Tests/AsyncTests.Bugs.cs

@@ -158,13 +158,27 @@ namespace Tests
     {
         public static IEnumerable<T> WithDispose<T>(this IEnumerable<T> source, Action a)
         {
-            return EnumerableEx.Create(() =>
+            return new Enumerable<T>(() =>
             {
                 var e = source.GetEnumerator();
                 return new Enumerator<T>(e.MoveNext, () => e.Current, () => { e.Dispose(); a(); });
             });
         }
 
+        private sealed class Enumerable<T> : IEnumerable<T>
+        {
+            private readonly Func<IEnumerator<T>> _getEnumerator;
+
+            public Enumerable(Func<IEnumerator<T>> getEnumerator)
+            {
+                _getEnumerator = getEnumerator;
+            }
+
+            public IEnumerator<T> GetEnumerator() => _getEnumerator();
+
+            IEnumerator IEnumerable.GetEnumerator() => GetEnumerator();
+        }
+
         private sealed class Enumerator<T> : IEnumerator<T>
         {
             private readonly Func<bool> _moveNext;

Ix.NET/Source/System.Interactive.Async.Tests/System.Interactive.Async.Tests.csproj

@@ -14,7 +14,6 @@
 
   <ItemGroup>
     <ProjectReference Include="..\System.Interactive.Async.Providers\System.Interactive.Async.Providers.csproj" />
-    <ProjectReference Include="..\System.Interactive\System.Interactive.csproj" />
     <ProjectReference Include="..\System.Linq.Async\System.Linq.Async.csproj" />
   </ItemGroup>