Step 2

Replacing blanks with guesses

tests/test_game.py

@@ -1,5 +1,5 @@
 from hangman.constants import WORD_LIST
-from hangman.game import choose_word, is_in_word
+from hangman.game import Game, choose_word, is_in_word
 
 
 def test_choose_word_from_list():
@@ -14,3 +14,19 @@ def test_letter_in_word():
 
 def test_letter_not_in_word():
     assert not is_in_word("camel", "z")
+
+
+def test_display_starts_blank():
+    assert Game("cat").display() == "_ _ _"
+
+
+def test_correct_guess_reveals_letters():
+    g = Game("banana")
+    assert g.guess("a") is True
+    assert g.display() == "_ a _ a _ a"
+
+
+def test_wrong_guess_keeps_blanks():
+    g = Game("cat")
+    assert g.guess("z") is False
+    assert g.display() == "_ _ _"