def test_one_step_available(self):
pipe = objects.Pipe(objects.Cell(0, 0), objects.Cell(2, 2))
puzzle = objects.Puzzle(3, 3, [pipe])
puzzle.cells[0][1] = True
ps = solver.PipeSolver(puzzle, pipe)
ps.take_only_available_steps()
self.assertEqual(1, len(ps.pipe.steps))
def test_uses_start_cell(self):
pipe = objects.Pipe(objects.Cell(0, 0), objects.Cell(1, 1))
puzzle = objects.Puzzle(3, 3, [pipe])
ps = solver.PipeSolver(puzzle, pipe)
cell = ps.get_current_cell()
self.assertEqual(0, cell.x)
self.assertEqual(0, cell.y)
def test_two_steps_available(self):
# should return the same pipe since there isn't just one optional step
pipe = objects.Pipe(objects.Cell(0, 0), objects.Cell(2, 2))
puzzle = objects.Puzzle(3, 3, [pipe])
ps = solver.PipeSolver(puzzle, pipe)
ps.take_only_available_steps()
self.assertEqual(pipe, ps.pipe)
def test_complete_the_pipe(self):
pipe = objects.Pipe(objects.Cell(0, 0), objects.Cell(1, 1))
puzzle = objects.Puzzle(3, 3, [pipe])
puzzle.cells[0][1] = True
puzzle.cells[2][0] = True
ps = solver.PipeSolver(puzzle, pipe)
ps.take_only_available_steps()
self.assertEqual(1, len(ps.pipe.steps))
self.assertEqual(True, ps.pipe.complete)
def test_one_possible_move_in_the_corner(self):
pipe = objects.Pipe(objects.Cell(0, 0), objects.Cell(1, 1))
puzzle = objects.Puzzle(3, 3, [pipe])
puzzle.cells[0][1] = True
ps = solver.PipeSolver(puzzle, pipe)
moves = ps.get_possible_next_moves()
self.assertEqual(1, len(moves))
self.assertEqual(1, moves[0].x)
self.assertEqual(0, moves[0].y)
def test_three_possible_moves_on_a_side(self):
pipe = objects.Pipe(objects.Cell(0, 1), objects.Cell(2, 2))
puzzle = objects.Puzzle(3, 3, [pipe])
ps = solver.PipeSolver(puzzle, pipe)
moves = ps.get_possible_next_moves()
self.assertEqual(3, len(moves))
self.assertEqual(1, moves[0].x)
self.assertEqual(1, moves[0].y)
self.assertEqual(0, moves[1].x)
self.assertEqual(2, moves[1].y)
self.assertEqual(0, moves[2].x)
self.assertEqual(0, moves[2].y)
def test_four_possible_moves_including_stop(self):
pipe = objects.Pipe(objects.Cell(1, 1), objects.Cell(1, 0))
puzzle = objects.Puzzle(4, 4, [pipe])
ps = solver.PipeSolver(puzzle, pipe)
moves = ps.get_possible_next_moves()
self.assertEqual(4, len(moves))
self.assertEqual(2, moves[0].x)
self.assertEqual(1, moves[0].y)
self.assertEqual(1, moves[1].x)
self.assertEqual(2, moves[1].y)
self.assertEqual(0, moves[2].x)
self.assertEqual(1, moves[2].y)
self.assertEqual(1, moves[3].x)
self.assertEqual(0, moves[3].y)