fix(dir-filter): look for first parent project

In order to see if the directory should be scanned we need to check
upward for the first project (assuming that no file can be contained
within two or more projects at the same time).

Furthermore Ive changed some variable names and added a log if the
directory is ignored because it is determined not to be from the
solution project.

Author: Dynge

lua/neotest-vstest/init.lua

@@ -143,28 +143,28 @@ local function create_adapter(config)
     local fullpath = vim.fs.joinpath(root, rel_path)
     if solution_dir then
       local solution_info = dotnet_utils.get_solution_info(solution)
-      local project_files = vim.fs.find(function(path, _)
-        return path:match("%.[cf]sproj$")
-      end, {
-        upward = false,
-        type = "file",
-        path = fullpath,
-        limit = math.huge,
-      })
 
-      return vim
+      local is_project_reachable = vim
         .iter(solution_info and solution_info.projects or {})
         :map(function(proj)
-          return proj.proj_file
+          return vim.fs.dirname(proj.proj_file)
         end)
-        :any(function(proj_file)
-          for _, file in ipairs(project_files) do
-            if vim.fs.normalize(proj_file) == vim.fs.normalize(file) then
-              return true
-            end
-          end
-          return false
+        :any(function(project_dir)
+          -- path should be a subdir of a solution project
+          -- or the solution project should be a subdir of the path
+          return vim.fs.relpath(project_dir, fullpath) ~= nil
+            or vim.fs.relpath(fullpath, project_dir) ~= nil
         end)
+      if not is_project_reachable then
+        logger.debug(
+          string.format(
+            "neotest-vstest: file '%s' is not a part of the solution '%s'",
+            rel_path,
+            solution_info.solution_file
+          )
+        )
+      end
+      return is_project_reachable
     else
       return true
     end