Step 1

Picking a random word and checking answers

tests/test_game.py

@@ -0,0 +1,16 @@
+from hangman.constants import WORD_LIST
+from hangman.game import choose_word, is_in_word
+
+
+def test_choose_word_from_list():
+    assert choose_word(["Cat"]) == "cat"
+    assert choose_word() in WORD_LIST
+
+
+def test_letter_in_word():
+    assert is_in_word("camel", "a")
+    assert is_in_word("camel", "A")
+
+
+def test_letter_not_in_word():
+    assert not is_in_word("camel", "z")