public TestEnv()
{
_debugDir = Environment.CurrentDirectory;
_binDir = Path.GetDirectoryName(_debugDir);
_testProjectDir = Path.GetDirectoryName(_binDir);
_solutionDir = Path.GetDirectoryName(_testProjectDir);
_solutionFile = Path.GetFullPath(Path.Combine(_solutionDir, "VisualStudioTextTransform.sln"));
}