Fix cleaned tests-dir.

build.cake

@@ -93,7 +93,7 @@ Task("Clean")
     CleanDirectory(parameters.NugetRoot);
     CleanDirectory(parameters.ZipRoot);
     CleanDirectory(parameters.BinRoot);
-    CleanDirectory(parameters.TestsRoot);
+    CleanDirectory(parameters.DesignerTestsRoot);
 });
 
 Task("Restore-NuGet-Packages")

parameters.cake

@@ -30,7 +30,7 @@ public class Parameters
     public DirectoryPath NugetRoot { get; private set; }
     public DirectoryPath ZipRoot { get; private set; }
     public DirectoryPath BinRoot { get; private set; }
-    public DirectoryPath TestsRoot { get; private set; }
+    public DirectoryPath DesignerTestsRoot { get; private set; }
     public string DirSuffix { get; private set; }
     public string DirSuffixIOS { get; private set; }
     public DirectoryPathCollection BuildDirs { get; private set; }
@@ -106,7 +106,7 @@ public class Parameters
         NugetRoot = ArtifactsDir.Combine("nuget");
         ZipRoot = ArtifactsDir.Combine("zip");
         BinRoot = ArtifactsDir.Combine("bin");
-        TestsRoot = ArtifactsDir.Combine("tests");
+        DesignerTestsRoot = ArtifactsDir.Combine("designer-tests");
 
         BuildDirs = context.GetDirectories("**/bin") + context.GetDirectories("**/obj");