Step 1

Picking a random word and checking answers

tests/test_main.py

@@ -0,0 +1,16 @@
+from hangman import main as cli
+
+
+def run(monkeypatch, capsys, word, letter):
+    monkeypatch.setattr(cli, "choose_word", lambda: word)
+    monkeypatch.setattr("builtins.input", lambda _="": letter)
+    cli.main()
+    return capsys.readouterr().out
+
+
+def test_right_guess(monkeypatch, capsys):
+    assert "Right" in run(monkeypatch, capsys, "camel", "a")
+
+
+def test_wrong_guess(monkeypatch, capsys):
+    assert "Wrong" in run(monkeypatch, capsys, "camel", "z")