public void TestCreateOrFindFolder()
 {
     ProjectNode projectNode = new ProjectNode(vsSolution, project.GUID);
     Assert.AreSame(projectNode, projectNode.FindOrCreateFolder("."));
     Assert.AreSame(projectNode, projectNode.FindSubfolder("."));
     Assert.AreSame(projectNode, projectNode.FindSubfolder(".\\."));
     Assert.AreSame(projectNode, projectNode.FindSubfolder(".\\.\\"));
     Assert.AreSame(projectNode, projectNode.FindSubfolder("\\"));
     Assert.AreSame(projectNode, projectNode.FindSubfolder("\\."));
     Assert.AreSame(projectNode, projectNode.FindSubfolder("\\.\\"));
     Assert.AreSame(projectNode, projectNode.FindSubfolder("\\.\\."));
 }