Sort endpoint pattern with OrdinalIgnoreCase

Author: JamesNK

src/Http/Routing/src/Matching/EndpointComparer.cs

@@ -1,4 +1,4 @@
-// Copyright (c) .NET Foundation. All rights reserved.
+// Copyright (c) .NET Foundation. All rights reserved.
 // Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
 
 using System;
@@ -61,7 +61,7 @@ private int ComparePattern(Endpoint x, Endpoint y)
             {
                 if (routeEndpointY != null)
                 {
-                    return routeEndpointX.RoutePattern.RawText.CompareTo(routeEndpointY.RoutePattern.RawText);
+                    return string.Compare(routeEndpointX.RoutePattern.RawText, routeEndpointY.RoutePattern.RawText, StringComparison.OrdinalIgnoreCase);
                 }
 
                 return 1;

src/Http/Routing/test/UnitTests/Matching/RouteEndpointComparerTest.cs renamed to src/Http/Routing/test/UnitTests/Matching/EndpointComparerTest.cs

@@ -1,4 +1,4 @@
-// Copyright (c) .NET Foundation. All rights reserved.
+// Copyright (c) .NET Foundation. All rights reserved.
 // Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
 
 using System.Collections.Generic;
@@ -87,7 +87,7 @@ public void Compare_PrefersTemplate_IfOtherCriteriaIsSame()
             var result = comparer.Compare(endpoint1, endpoint2);
 
             // Assert
-            Assert.Equal(1, result);
+            Assert.True(result > 0);
         }
 
         [Fact]
@@ -218,6 +218,29 @@ public void Sort_MoreSpecific_FirstInList()
                 e => Assert.Same(endpoint7, e));
         }
 
+        [Fact]
+        public void Compare_PatternOrder_OrdinalIgnoreCaseSort()
+        {
+            // Arrange
+            var endpoint1 = CreateEndpoint("/I", order: 0);
+            var endpoint2 = CreateEndpoint("/i", order: 0);
+            var endpoint3 = CreateEndpoint("/\u0131", order: 0); // Turkish lowercase i
+
+            var list = new List<RouteEndpoint>() { endpoint1, endpoint2, endpoint3 };
+
+            var comparer = CreateComparer();
+
+            // Act
+            list.Sort(comparer);
+
+            // Assert
+            Assert.Collection(
+                list,
+                e => Assert.Same(endpoint1, e),
+                e => Assert.Same(endpoint2, e),
+                e => Assert.Same(endpoint3, e));
+        }
+
         private static RouteEndpoint CreateEndpoint(string template, int order, params object[] metadata)
         {
             return new RouteEndpoint(