public void ExampleTest()
{
var field = new List <char[]>(5)
{
".S..".ToCharArray(),
"###.".ToCharArray(),
"T...".ToCharArray(),
".##.".ToCharArray(),
"....".ToCharArray()
};
_lab = new Labyrinth(field);
_lab.Bfs();
var route = _lab.GetBestRoute();
route.Length.Should().Be(7);
new string(route).Should().BeEquivalentTo("RRDDLLL");
}