Moving ToLookup tests.

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

@@ -26,150 +26,6 @@ namespace Tests
             await Assert.ThrowsAsync<ArgumentNullException>(() => AsyncEnumerableEx.IsEmpty<int>(null, CancellationToken.None));
         }
 
-        [Fact]
-        public async Task ToLookup_Null()
-        {
-            await Assert.ThrowsAsync<ArgumentNullException>(() => AsyncEnumerable.ToLookup<int, int>(default(IAsyncEnumerable<int>), x => 0));
-            await Assert.ThrowsAsync<ArgumentNullException>(() => AsyncEnumerable.ToLookup<int, int>(AsyncEnumerable.Return(42), default(Func<int, int>)));
-
-            await Assert.ThrowsAsync<ArgumentNullException>(() => AsyncEnumerable.ToLookup<int, int>(default(IAsyncEnumerable<int>), x => 0, EqualityComparer<int>.Default));
-            await Assert.ThrowsAsync<ArgumentNullException>(() => AsyncEnumerable.ToLookup<int, int>(AsyncEnumerable.Return(42), default(Func<int, int>), EqualityComparer<int>.Default));
-            await Assert.ThrowsAsync<ArgumentNullException>(() => AsyncEnumerable.ToLookup<int, int>(AsyncEnumerable.Return(42), x => 0, default(IEqualityComparer<int>)));
-
-            await Assert.ThrowsAsync<ArgumentNullException>(() => AsyncEnumerable.ToLookup<int, int, int>(default(IAsyncEnumerable<int>), x => 0, x => 0));
-            await Assert.ThrowsAsync<ArgumentNullException>(() => AsyncEnumerable.ToLookup<int, int, int>(AsyncEnumerable.Return(42), default(Func<int, int>), x => 0));
-            await Assert.ThrowsAsync<ArgumentNullException>(() => AsyncEnumerable.ToLookup<int, int, int>(AsyncEnumerable.Return(42), x => 0, default(Func<int, int>)));
-
-            await Assert.ThrowsAsync<ArgumentNullException>(() => AsyncEnumerable.ToLookup<int, int, int>(default(IAsyncEnumerable<int>), x => 0, x => 0, EqualityComparer<int>.Default));
-            await Assert.ThrowsAsync<ArgumentNullException>(() => AsyncEnumerable.ToLookup<int, int, int>(AsyncEnumerable.Return(42), default(Func<int, int>), x => 0, EqualityComparer<int>.Default));
-            await Assert.ThrowsAsync<ArgumentNullException>(() => AsyncEnumerable.ToLookup<int, int, int>(AsyncEnumerable.Return(42), x => 0, default(Func<int, int>), EqualityComparer<int>.Default));
-            await Assert.ThrowsAsync<ArgumentNullException>(() => AsyncEnumerable.ToLookup<int, int, int>(AsyncEnumerable.Return(42), x => 0, x => 0, default(IEqualityComparer<int>)));
-
-            await Assert.ThrowsAsync<ArgumentNullException>(() => AsyncEnumerable.ToLookup<int, int>(default(IAsyncEnumerable<int>), x => 0, CancellationToken.None));
-            await Assert.ThrowsAsync<ArgumentNullException>(() => AsyncEnumerable.ToLookup<int, int>(AsyncEnumerable.Return(42), default(Func<int, int>), CancellationToken.None));
-
-            await Assert.ThrowsAsync<ArgumentNullException>(() => AsyncEnumerable.ToLookup<int, int>(default(IAsyncEnumerable<int>), x => 0, EqualityComparer<int>.Default, CancellationToken.None));
-            await Assert.ThrowsAsync<ArgumentNullException>(() => AsyncEnumerable.ToLookup<int, int>(AsyncEnumerable.Return(42), default(Func<int, int>), EqualityComparer<int>.Default, CancellationToken.None));
-            await Assert.ThrowsAsync<ArgumentNullException>(() => AsyncEnumerable.ToLookup<int, int>(AsyncEnumerable.Return(42), x => 0, default(IEqualityComparer<int>), CancellationToken.None));
-
-            await Assert.ThrowsAsync<ArgumentNullException>(() => AsyncEnumerable.ToLookup<int, int, int>(default(IAsyncEnumerable<int>), x => 0, x => 0, CancellationToken.None));
-            await Assert.ThrowsAsync<ArgumentNullException>(() => AsyncEnumerable.ToLookup<int, int, int>(AsyncEnumerable.Return(42), default(Func<int, int>), x => 0, CancellationToken.None));
-            await Assert.ThrowsAsync<ArgumentNullException>(() => AsyncEnumerable.ToLookup<int, int, int>(AsyncEnumerable.Return(42), x => 0, default(Func<int, int>), CancellationToken.None));
-
-            await Assert.ThrowsAsync<ArgumentNullException>(() => AsyncEnumerable.ToLookup<int, int, int>(default(IAsyncEnumerable<int>), x => 0, x => 0, EqualityComparer<int>.Default, CancellationToken.None));
-            await Assert.ThrowsAsync<ArgumentNullException>(() => AsyncEnumerable.ToLookup<int, int, int>(AsyncEnumerable.Return(42), default(Func<int, int>), x => 0, EqualityComparer<int>.Default, CancellationToken.None));
-            await Assert.ThrowsAsync<ArgumentNullException>(() => AsyncEnumerable.ToLookup<int, int, int>(AsyncEnumerable.Return(42), x => 0, default(Func<int, int>), EqualityComparer<int>.Default, CancellationToken.None));
-            await Assert.ThrowsAsync<ArgumentNullException>(() => AsyncEnumerable.ToLookup<int, int, int>(AsyncEnumerable.Return(42), x => 0, x => 0, default(IEqualityComparer<int>), CancellationToken.None));
-        }
-
-        [Fact]
-        public void ToLookup1()
-        {
-            var xs = new[] { 1, 4 }.ToAsyncEnumerable();
-            var res = xs.ToLookup(x => x % 2).Result;
-            Assert.True(res.Contains(0));
-            Assert.True(res.Contains(1));
-            Assert.True(res[0].Contains(4));
-            Assert.True(res[1].Contains(1));
-            Assert.True(res.Count == 2);
-        }
-
-        [Fact]
-        public void ToLookup2()
-        {
-            var xs = new[] { 1, 4, 2 }.ToAsyncEnumerable();
-            var res = xs.ToLookup(x => x % 2).Result;
-            Assert.True(res.Contains(0));
-            Assert.True(res.Contains(1));
-            Assert.True(res[0].Contains(4));
-            Assert.True(res[0].Contains(2));
-            Assert.True(res[1].Contains(1));
-            Assert.True(res.Count == 2);
-        }
-
-        [Fact]
-        public void ToLookup3()
-        {
-            var xs = new[] { 1, 4 }.ToAsyncEnumerable();
-            var res = xs.ToLookup(x => x % 2, x => x + 1).Result;
-            Assert.True(res.Contains(0));
-            Assert.True(res.Contains(1));
-            Assert.True(res[0].Contains(5));
-            Assert.True(res[1].Contains(2));
-            Assert.True(res.Count == 2);
-        }
-
-        [Fact]
-        public void ToLookup4()
-        {
-            var xs = new[] { 1, 4, 2 }.ToAsyncEnumerable();
-            var res = xs.ToLookup(x => x % 2, x => x + 1).Result;
-            Assert.True(res.Contains(0));
-            Assert.True(res.Contains(1));
-            Assert.True(res[0].Contains(5));
-            Assert.True(res[0].Contains(3));
-            Assert.True(res[1].Contains(2));
-            Assert.True(res.Count == 2);
-        }
-
-        [Fact]
-        public void ToLookup5()
-        {
-            var xs = new[] { 1, 4 }.ToAsyncEnumerable();
-            var res = xs.ToLookup(x => x % 2, new Eq()).Result;
-            Assert.True(res.Contains(0));
-            Assert.True(res.Contains(1));
-            Assert.True(res[0].Contains(4));
-            Assert.True(res[1].Contains(1));
-            Assert.True(res.Count == 2);
-        }
-
-        [Fact]
-        public void ToLookup6()
-        {
-            var xs = new[] { 1, 4, 2 }.ToAsyncEnumerable();
-            var res = xs.ToLookup(x => x % 2, new Eq()).Result;
-            Assert.True(res.Contains(0));
-            Assert.True(res.Contains(1));
-            Assert.True(res[0].Contains(4));
-            Assert.True(res[0].Contains(2));
-            Assert.True(res[1].Contains(1));
-            Assert.True(res.Count == 2);
-        }
-
-        [Fact]
-        public void ToLookup7()
-        {
-            var xs = new[] { 1, 4, 2 }.ToAsyncEnumerable();
-            var res = xs.ToLookup(x => x % 2).Result;
-            foreach (var g in res)
-                Assert.True(g.Key == 0 || g.Key == 1);
-        }
-
-        [Fact]
-        public void ToLookup8()
-        {
-            var xs = new[] { 1, 4, 2 }.ToAsyncEnumerable();
-            var res = xs.ToLookup(x => x % 2).Result;
-#pragma warning disable IDE0007 // Use implicit type
-            foreach (IGrouping<int, int> g in (IEnumerable)res)
-                Assert.True(g.Key == 0 || g.Key == 1);
-#pragma warning restore IDE0007 // Use implicit type
-        }
-
-        [Fact]
-        public void ToLookup9()
-        {
-            var xs = new[] { 1, 4, 2 }.ToAsyncEnumerable();
-            var res = xs.ToLookup(x => x % 2, x => x, new Eq()).Result;
-            Assert.True(res.Contains(0));
-            Assert.True(res.Contains(1));
-            Assert.True(res[0].Contains(4));
-            Assert.True(res[0].Contains(2));
-            Assert.True(res[1].Contains(1));
-            Assert.True(res.Count == 2);
-        }
-
         [Fact]
         public async Task Min_Null()
         {

Ix.NET/Source/System.Linq.Async.Tests/System/Linq/Operators/ToLookup.cs

@@ -0,0 +1,174 @@
+// 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;
+using System.Collections.Generic;
+using System.Linq;
+using System.Threading;
+using System.Threading.Tasks;
+using Xunit;
+
+namespace Tests
+{
+    public class ToLookup : AsyncEnumerableTests
+    {
+        [Fact]
+        public async Task ToLookup_Null()
+        {
+            await Assert.ThrowsAsync<ArgumentNullException>(() => AsyncEnumerable.ToLookup<int, int>(default(IAsyncEnumerable<int>), x => 0));
+            await Assert.ThrowsAsync<ArgumentNullException>(() => AsyncEnumerable.ToLookup<int, int>(AsyncEnumerable.Return(42), default(Func<int, int>)));
+
+            await Assert.ThrowsAsync<ArgumentNullException>(() => AsyncEnumerable.ToLookup<int, int>(default(IAsyncEnumerable<int>), x => 0, EqualityComparer<int>.Default));
+            await Assert.ThrowsAsync<ArgumentNullException>(() => AsyncEnumerable.ToLookup<int, int>(AsyncEnumerable.Return(42), default(Func<int, int>), EqualityComparer<int>.Default));
+            await Assert.ThrowsAsync<ArgumentNullException>(() => AsyncEnumerable.ToLookup<int, int>(AsyncEnumerable.Return(42), x => 0, default(IEqualityComparer<int>)));
+
+            await Assert.ThrowsAsync<ArgumentNullException>(() => AsyncEnumerable.ToLookup<int, int, int>(default(IAsyncEnumerable<int>), x => 0, x => 0));
+            await Assert.ThrowsAsync<ArgumentNullException>(() => AsyncEnumerable.ToLookup<int, int, int>(AsyncEnumerable.Return(42), default(Func<int, int>), x => 0));
+            await Assert.ThrowsAsync<ArgumentNullException>(() => AsyncEnumerable.ToLookup<int, int, int>(AsyncEnumerable.Return(42), x => 0, default(Func<int, int>)));
+
+            await Assert.ThrowsAsync<ArgumentNullException>(() => AsyncEnumerable.ToLookup<int, int, int>(default(IAsyncEnumerable<int>), x => 0, x => 0, EqualityComparer<int>.Default));
+            await Assert.ThrowsAsync<ArgumentNullException>(() => AsyncEnumerable.ToLookup<int, int, int>(AsyncEnumerable.Return(42), default(Func<int, int>), x => 0, EqualityComparer<int>.Default));
+            await Assert.ThrowsAsync<ArgumentNullException>(() => AsyncEnumerable.ToLookup<int, int, int>(AsyncEnumerable.Return(42), x => 0, default(Func<int, int>), EqualityComparer<int>.Default));
+            await Assert.ThrowsAsync<ArgumentNullException>(() => AsyncEnumerable.ToLookup<int, int, int>(AsyncEnumerable.Return(42), x => 0, x => 0, default(IEqualityComparer<int>)));
+
+            await Assert.ThrowsAsync<ArgumentNullException>(() => AsyncEnumerable.ToLookup<int, int>(default(IAsyncEnumerable<int>), x => 0, CancellationToken.None));
+            await Assert.ThrowsAsync<ArgumentNullException>(() => AsyncEnumerable.ToLookup<int, int>(AsyncEnumerable.Return(42), default(Func<int, int>), CancellationToken.None));
+
+            await Assert.ThrowsAsync<ArgumentNullException>(() => AsyncEnumerable.ToLookup<int, int>(default(IAsyncEnumerable<int>), x => 0, EqualityComparer<int>.Default, CancellationToken.None));
+            await Assert.ThrowsAsync<ArgumentNullException>(() => AsyncEnumerable.ToLookup<int, int>(AsyncEnumerable.Return(42), default(Func<int, int>), EqualityComparer<int>.Default, CancellationToken.None));
+            await Assert.ThrowsAsync<ArgumentNullException>(() => AsyncEnumerable.ToLookup<int, int>(AsyncEnumerable.Return(42), x => 0, default(IEqualityComparer<int>), CancellationToken.None));
+
+            await Assert.ThrowsAsync<ArgumentNullException>(() => AsyncEnumerable.ToLookup<int, int, int>(default(IAsyncEnumerable<int>), x => 0, x => 0, CancellationToken.None));
+            await Assert.ThrowsAsync<ArgumentNullException>(() => AsyncEnumerable.ToLookup<int, int, int>(AsyncEnumerable.Return(42), default(Func<int, int>), x => 0, CancellationToken.None));
+            await Assert.ThrowsAsync<ArgumentNullException>(() => AsyncEnumerable.ToLookup<int, int, int>(AsyncEnumerable.Return(42), x => 0, default(Func<int, int>), CancellationToken.None));
+
+            await Assert.ThrowsAsync<ArgumentNullException>(() => AsyncEnumerable.ToLookup<int, int, int>(default(IAsyncEnumerable<int>), x => 0, x => 0, EqualityComparer<int>.Default, CancellationToken.None));
+            await Assert.ThrowsAsync<ArgumentNullException>(() => AsyncEnumerable.ToLookup<int, int, int>(AsyncEnumerable.Return(42), default(Func<int, int>), x => 0, EqualityComparer<int>.Default, CancellationToken.None));
+            await Assert.ThrowsAsync<ArgumentNullException>(() => AsyncEnumerable.ToLookup<int, int, int>(AsyncEnumerable.Return(42), x => 0, default(Func<int, int>), EqualityComparer<int>.Default, CancellationToken.None));
+            await Assert.ThrowsAsync<ArgumentNullException>(() => AsyncEnumerable.ToLookup<int, int, int>(AsyncEnumerable.Return(42), x => 0, x => 0, default(IEqualityComparer<int>), CancellationToken.None));
+        }
+
+        [Fact]
+        public void ToLookup1()
+        {
+            var xs = new[] { 1, 4 }.ToAsyncEnumerable();
+            var res = xs.ToLookup(x => x % 2).Result;
+            Assert.True(res.Contains(0));
+            Assert.True(res.Contains(1));
+            Assert.True(res[0].Contains(4));
+            Assert.True(res[1].Contains(1));
+            Assert.True(res.Count == 2);
+        }
+
+        [Fact]
+        public void ToLookup2()
+        {
+            var xs = new[] { 1, 4, 2 }.ToAsyncEnumerable();
+            var res = xs.ToLookup(x => x % 2).Result;
+            Assert.True(res.Contains(0));
+            Assert.True(res.Contains(1));
+            Assert.True(res[0].Contains(4));
+            Assert.True(res[0].Contains(2));
+            Assert.True(res[1].Contains(1));
+            Assert.True(res.Count == 2);
+        }
+
+        [Fact]
+        public void ToLookup3()
+        {
+            var xs = new[] { 1, 4 }.ToAsyncEnumerable();
+            var res = xs.ToLookup(x => x % 2, x => x + 1).Result;
+            Assert.True(res.Contains(0));
+            Assert.True(res.Contains(1));
+            Assert.True(res[0].Contains(5));
+            Assert.True(res[1].Contains(2));
+            Assert.True(res.Count == 2);
+        }
+
+        [Fact]
+        public void ToLookup4()
+        {
+            var xs = new[] { 1, 4, 2 }.ToAsyncEnumerable();
+            var res = xs.ToLookup(x => x % 2, x => x + 1).Result;
+            Assert.True(res.Contains(0));
+            Assert.True(res.Contains(1));
+            Assert.True(res[0].Contains(5));
+            Assert.True(res[0].Contains(3));
+            Assert.True(res[1].Contains(2));
+            Assert.True(res.Count == 2);
+        }
+
+        [Fact]
+        public void ToLookup5()
+        {
+            var xs = new[] { 1, 4 }.ToAsyncEnumerable();
+            var res = xs.ToLookup(x => x % 2, new Eq()).Result;
+            Assert.True(res.Contains(0));
+            Assert.True(res.Contains(1));
+            Assert.True(res[0].Contains(4));
+            Assert.True(res[1].Contains(1));
+            Assert.True(res.Count == 2);
+        }
+
+        [Fact]
+        public void ToLookup6()
+        {
+            var xs = new[] { 1, 4, 2 }.ToAsyncEnumerable();
+            var res = xs.ToLookup(x => x % 2, new Eq()).Result;
+            Assert.True(res.Contains(0));
+            Assert.True(res.Contains(1));
+            Assert.True(res[0].Contains(4));
+            Assert.True(res[0].Contains(2));
+            Assert.True(res[1].Contains(1));
+            Assert.True(res.Count == 2);
+        }
+
+        [Fact]
+        public void ToLookup7()
+        {
+            var xs = new[] { 1, 4, 2 }.ToAsyncEnumerable();
+            var res = xs.ToLookup(x => x % 2).Result;
+            foreach (var g in res)
+                Assert.True(g.Key == 0 || g.Key == 1);
+        }
+
+        [Fact]
+        public void ToLookup8()
+        {
+            var xs = new[] { 1, 4, 2 }.ToAsyncEnumerable();
+            var res = xs.ToLookup(x => x % 2).Result;
+#pragma warning disable IDE0007 // Use implicit type
+            foreach (IGrouping<int, int> g in (IEnumerable)res)
+                Assert.True(g.Key == 0 || g.Key == 1);
+#pragma warning restore IDE0007 // Use implicit type
+        }
+
+        [Fact]
+        public void ToLookup9()
+        {
+            var xs = new[] { 1, 4, 2 }.ToAsyncEnumerable();
+            var res = xs.ToLookup(x => x % 2, x => x, new Eq()).Result;
+            Assert.True(res.Contains(0));
+            Assert.True(res.Contains(1));
+            Assert.True(res[0].Contains(4));
+            Assert.True(res[0].Contains(2));
+            Assert.True(res[1].Contains(1));
+            Assert.True(res.Count == 2);
+        }
+
+        private sealed class Eq : IEqualityComparer<int>
+        {
+            public bool Equals(int x, int y)
+            {
+                return EqualityComparer<int>.Default.Equals(Math.Abs(x), Math.Abs(y));
+            }
+
+            public int GetHashCode(int obj)
+            {
+                return EqualityComparer<int>.Default.GetHashCode(Math.Abs(obj));
+            }
+        }
+    }
+}