Fixed a few bugs and added laser mirror room generator.

tests/lasermirror_tests.py

@@ -0,0 +1,15 @@
+
+from __future__ import print_function
+import unittest
+from robotgame.logic.lasermirror import *
+from robotgame.logic.direction import *
+
+
+class LaserMirrorTest(unittest.TestCase):
+    def test_playfield_generation(self):
+        print()
+        playfield = generate_simple_playfield(13)
+        print_playfield(playfield, 12, 12)
+
+if __name__ == '__main__':
+    unittest.main()

tests/rollingstone_tests.py

@@ -35,5 +35,11 @@ class RollingStoneTest(unittest.TestCase):
         self.assertTrue(
             reaches_goal(playfield, 10, 10, steps, (0, 0), (9, 9)))
 
+        print()
+        playfield, steps = generate_simple_playfield(10, 10, 4, 11)
+        print_playfield(playfield, 10, 10, True)
+        self.assertTrue(
+            reaches_goal(playfield, 10, 10, steps, (0, 0), (9, 9)))
+        
 if __name__ == '__main__':
     unittest.main()