public void Find_File()
        {
            string refsText             = Path.GetFullPath(Path.Combine(DataPath, "refs.txt"));
            string fileName             = "UnityEngine.dll";
            BuildToolsRefsParser reader = new BuildToolsRefsParser(refsText);

            Assert.IsTrue(reader.FileExists);
            RootNode rootNodes = reader.ReadFile();
            FileNode target    = rootNodes.Find <FileNode>(f => f.GetFilename() == fileName);

            Assert.IsNotNull(target);
            Assert.AreEqual(fileName, target.GetFilename());
        }