Test Part 3

test_maze_runner.py

+"""
+Created on Wed Nov 20 15:31:10 2024
+"""
+
+__author__ = "Son Hoang"
+__copyright__ = "Copyright (c) 2024, University of Southampton"
+__credits__ = ["Son Hoang"]
+__licence__ = "MIT"
+__version__ = "1.0"
+__maintainer__ = "Son Hoang"
+__email__ = "T.S.Hoang@soton.ac.uk"
+__status__ = "Prototype"
+
+from maze import Maze  # type: ignore
+from runner import (  # type: ignore
+    create_runner,
+    get_x,
+    get_y,
+    turn,
+    get_orientation,
+)
+
+
+def test_runner_sense_walls() -> None:
+    """A Unit test for :py:func:`~Maze.sense_walls`
+
+    Below is the test sequence:
+
+    1. Create a maze of size (11, 5).
+
+    2. Add a horizontal wall at (5, 2).
+
+    3. Add a runner at (5, 2) facing East
+
+    4. Assert that the runner sense no walls on the left and in the front, but
+    there is a wall on the right.
+    """
+    maze = Maze(11, 5)
+    maze.add_horizontal_wall(5, 2)
+    runner = create_runner(5, 2, "E")
+    assert maze.sense_walls(runner) == (False, False, True)
+
+
+def test_runner_go_straight() -> None:
+    """A Unit test for :py:func:`~Maze.go_straight`
+
+    Below is the test sequence:
+
+    1. Create a maze of size (11, 5).
+
+    2. Add a horizontal wall at (5, 2).
+
+    3. Add a runner at (5, 2) facing East
+
+    4. Let the runner go straight
+
+    4. Assert that the runner is at (6, 2)
+    """
+    maze = Maze(11, 5)
+    maze.add_horizontal_wall(5, 2)
+    runner = create_runner(5, 2, "E")
+    runner = maze.go_straight(runner)
+    assert get_x(runner) == 6
+    assert get_y(runner) == 2
+
+
+def test_move() -> None:
+    """A Unit test for :py:func:`~Maze.move`
+
+    Below is the test sequence:
+
+    1. Create a maze of size (11, 5).
+
+    2. Add a horizontal wall at (5, 2).
+
+    3. Add a runner at (5, 2) facing South (toward the wall)
+
+    4. Let the runner moves and get the (new) runner and the actions.
+
+    5. Assert that the new runner is at one of four locations (5, 3), (5, 1),
+    (4, 2), (6, 2).
+
+    6. Create a test runner at (5, 2) facing South (toward the wall).
+
+    7. Replay the actions with the test runner. Rely on go_straight() method to
+    check if the runner hits the wall.
+
+    8. Assert that the test runner is the same as the runner after the replay.
+    """
+    maze = Maze(11, 5)
+    maze.add_horizontal_wall(5, 2)
+    runner = create_runner(5, 2, "S")
+    runner, actions = maze.move(runner)
+
+    test_runner = create_runner(5, 2, "S")
+    assert (get_x(runner), get_y(runner)) in [
+        (5, 3),
+        (5, 1),
+        (4, 2),
+        (6, 2),
+    ], f"Runner moves to far to {(get_x(runner), get_y(runner))}"
+
+    for action in actions:
+        if action == "L":
+            test_runner = turn(test_runner, "Left")
+        elif action == "R":
+            test_runner = turn(test_runner, "Right")
+        elif action == "F":
+            test_runner = maze.go_straight(test_runner)
+        else:
+            assert False, f"Unexpected action {action}"
+
+    assert get_x(runner) == get_x(test_runner), "Incorrect x-coordinate for the runner"
+    assert get_y(runner) == get_y(test_runner), "Incorrect y-coordinate for the runner"
+    assert get_orientation(runner) == get_orientation(
+        test_runner
+    ), "Incorrect orientation for the runner"
+
+
+def test_explore() -> None:
+    """
+    The test for :py:func:~Maze.explore should be similar to test_move() above
+    (i.e., replaying the action to see if a test runner can follow the action to
+    get to the target destination. This will be left as an exercise for any keen
+    testers.
+    """
+    pass