Remove dependency on fluent theme.

tests/Avalonia.Benchmarks/Styling/ResourceBenchmarks.cs

@@ -3,7 +3,6 @@ using Avalonia.Controls;
 using Avalonia.Platform;
 using Avalonia.PlatformSupport;
 using Avalonia.Styling;
-using Avalonia.Themes.Fluent;
 using Avalonia.UnitTests;
 using BenchmarkDotNet.Attributes;
 using Moq;
@@ -25,7 +24,7 @@ namespace Avalonia.Benchmarks.Styling
                 renderInterface: new MockPlatformRenderInterface(),
                 standardCursorFactory: Mock.Of<ICursorFactory>(),
                 styler: new Styler(),
-                theme: () => LoadTheme(),
+                theme: () => CreateTheme(),
                 threadingInterface: new NullThreadingPlatform(),
                 fontManagerImpl: new MockFontManagerImpl(),
                 textShaperImpl: new MockTextShaperImpl(),
@@ -34,7 +33,7 @@ namespace Avalonia.Benchmarks.Styling
             return UnitTestApplication.Start(services);
         }
     
-        private static Styles LoadTheme()
+        private static Styles CreateTheme()
         {
             AssetLoader.RegisterResUriParsers();
             
@@ -43,11 +42,11 @@ namespace Avalonia.Benchmarks.Styling
             
             var postHost = new Style();
             postHost.Resources.Add("postTheme", null);
-            
+
             return new Styles
             {
                 preHost,
-                new FluentTheme(new Uri("avares://Avalonia.Benchmarks")),
+                new TestStyles(50, 3, 5),
                 postHost
             };
         }
@@ -81,11 +80,13 @@ namespace Avalonia.Benchmarks.Styling
 
             current.Child = _searchStart;
         }
+
+        private const int LookupCount = 100;
         
         [Benchmark]
         public void FindPreResource()
         {
-            for (int i = 0; i < 100; ++i)
+            for (int i = 0; i < LookupCount; ++i)
             {
                 _searchStart.FindResource("preTheme");
             }
@@ -94,7 +95,7 @@ namespace Avalonia.Benchmarks.Styling
         [Benchmark]
         public void FindPostResource()
         {
-            for (int i = 0; i < 100; ++i)
+            for (int i = 0; i < LookupCount; ++i)
             {
                 _searchStart.FindResource("postTheme");
             }
@@ -103,7 +104,7 @@ namespace Avalonia.Benchmarks.Styling
         [Benchmark]
         public void FindNotExistingResource()
         {
-            for (int i = 0; i < 100; ++i)
+            for (int i = 0; i < LookupCount; ++i)
             {
                 _searchStart.FindResource("notPresent");
             }

tests/Avalonia.Benchmarks/TestStyles.cs

@@ -0,0 +1,29 @@
+using Avalonia.Styling;
+
+namespace Avalonia.Benchmarks
+{
+    public class TestStyles : Styles
+    {
+        public TestStyles(int childStylesCount, int childInnerStyleCount, int childResourceCount)
+        {
+            for (int i = 0; i < childStylesCount; i++)
+            {
+                var childStyles = new Styles();
+
+                for (int j = 0; j < childInnerStyleCount; j++)
+                {
+                    var childStyle = new Style();
+
+                    for (int k = 0; k < childResourceCount; k++)
+                    {
+                        childStyle.Resources.Add($"resource.{i}.{j}.{k}", null);
+                    }
+                    
+                    childStyles.Add(childStyle);
+                }
+                
+                Add(childStyles);
+            }
+        }
+    }
+}