public void FloorPlan_detects_agents()
{
FloorPlan plan = new FloorPlan(); //NSubstitute.Substitute.For<FloorPlan>();
plan.FloorTiles.AddRange(_FillArea(30, 10, 1));
plan.IsAgentOnTile(11, 4).Should().BeFalse();
var agent = new Agent(); // NSubstitute.Substitute.For<IAgent>();
agent.Move(new Location(11, 4));
plan.AddAgent("Test Agent", agent);
plan.IsAgentOnTile(11, 4).Should().BeTrue();
plan.IsAgentOnTile(4, 11).Should().BeFalse();
}