Added benchmarks for PathMarkupParser.

tests/Avalonia.Benchmarks/Avalonia.Benchmarks.csproj

@@ -1,6 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
-    <TargetFrameworks>netcoreapp2.0</TargetFrameworks>
+    <TargetFramework>netcoreapp2.0</TargetFramework>
+    <OutputType>Exe</OutputType>
   </PropertyGroup>
   <ItemGroup>
     <ProjectReference Include="..\..\src\Avalonia.Animation\Avalonia.Animation.csproj" />
@@ -15,7 +16,7 @@
     <ProjectReference Include="..\Avalonia.UnitTests\Avalonia.UnitTests.csproj" />
   </ItemGroup>
   <ItemGroup>
-    <PackageReference Include="BenchmarkDotNet" Version="0.10.8" />
+    <PackageReference Include="BenchmarkDotNet" Version="0.10.14" />
   </ItemGroup>
   <ItemGroup>
     <Folder Include="Properties\" />

tests/Avalonia.Benchmarks/Visuals/Media/PathMarkupParserTests.cs

@@ -0,0 +1,39 @@
+// Copyright (c) The Avalonia Project. All rights reserved.
+// Licensed under the MIT license. See licence.md file in the project root for full license information.
+
+using System;
+using Avalonia.Media;
+using Avalonia.UnitTests;
+using BenchmarkDotNet.Attributes;
+
+namespace Avalonia.Benchmarks.Visuals.Media
+{
+    [MemoryDiagnoser]
+    public class PathMarkupParserTests : IDisposable
+    {
+        private IDisposable _app;
+
+        public PathMarkupParserTests()
+        {
+            _app = UnitTestApplication.Start(TestServices.StyledWindow);
+        }
+
+        public void Dispose()
+        {
+            _app.Dispose();
+        }
+
+        [Benchmark]
+        public void Parse_Large_Path()
+        {
+            var path = "F1 M 16.6309 18.6563C 17.1309 8.15625 29.8809 14.1563 29.8809 14.1563C 30.8809 11.1563 34.1308 11.4063" +
+                " 34.1308 11.4063C 33.5 12 34.6309 13.1563 34.6309 13.1563C 32.1309 13.1562 31.1309 14.9062 31.1309 14.9" +
+                "062C 41.1309 23.9062 32.6309 27.9063 32.6309 27.9062C 24.6309 24.9063 21.1309 22.1562 16.6309 18.6563 Z" +
+                " M 16.6309 19.9063C 21.6309 24.1563 25.1309 26.1562 31.6309 28.6562C 31.6309 28.6562 26.3809 39.1562 18" +
+                ".3809 36.1563C 18.3809 36.1563 18 38 16.3809 36.9063C 15 36 16.3809 34.9063 16.3809 34.9063C 16.3809 34" +
+                ".9063 10.1309 30.9062 16.6309 19.9063 Z ";
+            var parser = new PathMarkupParser();
+            var result = parser.Parse(path);
+        }
+    }
+}