Moving Defer tests.

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

@@ -150,32 +150,6 @@ namespace Tests
             await SequenceIdentity(xs);
         }
 
-        [Fact]
-        public void Defer_Null()
-        {
-            AssertThrows<ArgumentNullException>(() => AsyncEnumerableEx.Defer<int>(default(Func<IAsyncEnumerable<int>>)));
-        }
-
-        [Fact]
-        public void Defer1()
-        {
-            var x = 0;
-            var xs = AsyncEnumerableEx.Defer<int>(() => new[] { x }.ToAsyncEnumerable());
-
-            {
-                var e = xs.GetAsyncEnumerator();
-                HasNext(e, 0);
-                NoNext(e);
-            }
-
-            {
-                x++;
-                var e = xs.GetAsyncEnumerator();
-                HasNext(e, 1);
-                NoNext(e);
-            }
-        }
-
         [Fact]
         public void Generate_Null()
         {

Ix.NET/Source/System.Interactive.Async.Tests/System/Linq/Operators/Defer.cs

@@ -0,0 +1,40 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the Apache 2.0 License.
+// See the LICENSE file in the project root for more information. 
+
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using Xunit;
+
+namespace Tests
+{
+    public class Defer : AsyncEnumerableExTests
+    {
+        [Fact]
+        public void Defer_Null()
+        {
+            AssertThrows<ArgumentNullException>(() => AsyncEnumerableEx.Defer<int>(default(Func<IAsyncEnumerable<int>>)));
+        }
+
+        [Fact]
+        public void Defer1()
+        {
+            var x = 0;
+            var xs = AsyncEnumerableEx.Defer<int>(() => new[] { x }.ToAsyncEnumerable());
+
+            {
+                var e = xs.GetAsyncEnumerator();
+                HasNext(e, 0);
+                NoNext(e);
+            }
+
+            {
+                x++;
+                var e = xs.GetAsyncEnumerator();
+                HasNext(e, 1);
+                NoNext(e);
+            }
+        }
+    }
+}