Got ApplicationTreeTest working in new NUnit test project.

.hgignore

@@ -42,3 +42,4 @@ build/UmbracoCms.AllBinaries.zip
 build/UmbracoCms.WebPI.zip
 build/UmbracoCms.zip
 src/Umbraco.Tests/config/applications.config
+src/Umbraco.Tests/config/trees.config

src/Umbraco.Tests/BusinessLogic/ApplicationTreeTest.cs

@@ -1,9 +1,9 @@
-using umbraco.BusinessLogic;
-using Microsoft.VisualStudio.TestTools.UnitTesting;
+using NUnit.Framework;
+using umbraco.BusinessLogic;
 using System;
 using System.Linq;
 
-namespace Umbraco.LegacyTests
+namespace Umbraco.Tests.BusinessLogic
 {
     
     
@@ -11,8 +11,8 @@ namespace Umbraco.LegacyTests
     ///This is a test class for ApplicationTreeTest and is intended
     ///to contain all ApplicationTreeTest Unit Tests
     ///</summary>
-    [TestClass()]
-    public class ApplicationTreeTest
+    [TestFixture()]
+    public class ApplicationTreeTest :  BaseTest
     {
 
 
@@ -20,7 +20,7 @@ namespace Umbraco.LegacyTests
         /// <summary>
         /// Creates a new app tree linked to an application, then delete the application and make sure the tree is gone as well
         ///</summary>
-        [TestMethod()]
+        [Test()]
         public void ApplicationTree_Make_New_Then_Delete_App()
         {
             //create new app
@@ -40,7 +40,7 @@ namespace Umbraco.LegacyTests
             app.Delete();
 
             //check that the tree is gone
-            Assert.AreEqual<int>(0, ApplicationTree.getApplicationTree(name).Count());
+            Assert.AreEqual(0, ApplicationTree.getApplicationTree(name).Count());
         }
 
 

src/Umbraco.Tests/Umbraco.Tests.csproj

@@ -45,6 +45,7 @@
   </ItemGroup>
   <ItemGroup>
     <Compile Include="BusinessLogic\ApplicationTest.cs" />
+    <Compile Include="BusinessLogic\ApplicationTreeTest.cs" />
     <Compile Include="BusinessLogic\BaseTest.cs" />
     <Compile Include="Properties\AssemblyInfo.cs" />
   </ItemGroup>

src/umbraco.businesslogic/ApplicationTree.cs

@@ -471,8 +471,8 @@ namespace umbraco.BusinessLogic
         {
             lock (Locker)
             {
-                var doc = File.Exists(TreeConfigFileName)
-                    ? XDocument.Load(TreeConfigFileName)
+                var doc = File.Exists(TreeConfigFilePath)
+                    ? XDocument.Load(TreeConfigFilePath)
                     : XDocument.Parse("<?xml version=\"1.0\"?><trees />");
                 if (doc.Root != null)
                 {
@@ -480,7 +480,7 @@ namespace umbraco.BusinessLogic
 
                     if (saveAfterCallback)
                     {
-                        doc.Save(TreeConfigFileName);
+                        doc.Save(TreeConfigFilePath);
 
                         ReCache();
                     }

test/umbraco.Test/Umbraco.LegacyTests.csproj

@@ -121,7 +121,6 @@
     <Compile Include="..\..\src\SolutionInfo.cs">
       <Link>Properties\SolutionInfo.cs</Link>
     </Compile>
-    <Compile Include="ApplicationTreeTest.cs" />
     <Compile Include="DataTypeDefinitionTest.cs" />
     <Compile Include="DictionaryTest.cs" />
     <Compile Include="DocumentTest.cs" />