public void WhereToNext_Finds_Direction_From_Start()
{
var asciiPathFinder = new ASCIIPathFinder();
var map1 = @"
@A
";
asciiPathFinder.LoadASCIIMap(map1);
asciiPathFinder.GoToStart();
Assert.AreEqual(asciiPathFinder.WhereToNext(), Direction.Right);
var map2 = @"
@
|
";
asciiPathFinder.LoadASCIIMap(map2);
asciiPathFinder.GoToStart();
Assert.AreEqual(asciiPathFinder.WhereToNext(), Direction.Down);
var map3 = @"
+@
";
asciiPathFinder.LoadASCIIMap(map3);
asciiPathFinder.GoToStart();
Assert.AreEqual(asciiPathFinder.WhereToNext(), Direction.Left);
}
public void WhereToNext_Null_If_No_Path()
{
var asciiPathFinder = new ASCIIPathFinder();
var map1 = @"
@
|
B --+
|
x--+
";
asciiPathFinder.LoadASCIIMap(map1);
asciiPathFinder.GoToStart();
asciiPathFinder.Go(Direction.Down);
asciiPathFinder.Go(Direction.Down);
Assert.AreEqual(asciiPathFinder.CurrentChar, 'B');
Assert.AreEqual(asciiPathFinder.WhereToNext(), null);
}
public void WhereToNext_Prefers_Maintaining_Direction()
{
var asciiPathFinder = new ASCIIPathFinder();
var map1 = @"
@
|
B--+
| |
x--+
";
asciiPathFinder.LoadASCIIMap(map1);
asciiPathFinder.GoToStart();
asciiPathFinder.Go(Direction.Down);
asciiPathFinder.Go(Direction.Down);
Assert.AreEqual(asciiPathFinder.CurrentChar, 'B');
Assert.AreEqual(asciiPathFinder.LastMovedInDirection, Direction.Down);
Assert.AreEqual(asciiPathFinder.WhereToNext(), Direction.Down);
}