Added test

Author: marklagendijk

tests/ImageSharp.Web.Tests/Commands/PresetOnlyQueryCollectionRequestParserTests.cs

@@ -33,6 +33,28 @@ public void PresetOnlyQueryCollectionRequestParserExtractsCommands()
             Assert.Equal(expected, actual);
         }
 
+        [Fact]
+        public void PresetOnlyQueryCollectionRequestParserExtractsCommandsWithOtherCasing()
+        {
+            IDictionary<string, string> expected = new Dictionary<string, string>(StringComparer.OrdinalIgnoreCase)
+            {
+                { "width", "400" },
+                { "height", "200" }
+            };
+
+            HttpContext context = CreateHttpContext("?PRESET=PRESET1");
+            IDictionary<string, string> actual = new PresetOnlyQueryCollectionRequestParser(Options.Create(new PresetOnlyQueryCollectionRequestParserOptions
+            {
+                Presets = new Dictionary<string, string>(StringComparer.OrdinalIgnoreCase)
+                {
+                    { "Preset1", "width=400&height=200" }
+                }
+            })).ParseRequestCommands(context);
+
+            Assert.Equal(expected, actual);
+        }
+
+
         [Fact]
         public void PresetOnlyQueryCollectionRequestParserCommandsWithoutPresetParam()
         {