Merge pull request #1 from donat-konan33/dictionary-api

TDD: Check that attempt exists in the English dictionary

tests/test_game.py

@@ -49,3 +49,11 @@ def test_is_invalid(self):
         assert new_game.is_valid(test_word) is False
         # teardown
         assert new_game.grid == list(test_grid) # Make sure the grid remained untouched
+
+# tests/test_game.py
+# [...]
+    def test_unknown_word_is_invalid(self):
+        """A word that is not in the English dictionary should not be valid"""
+        new_game = Game()
+        new_game.grid = list('KWIENFUQW') # Force the grid to a test case:
+        assert new_game.is_valid('FEUN') is False