Add project structure, license, and README for Rock Paper Scissors game

tests/test_game.py

@@ -0,0 +1,53 @@
+import pytest
+
+from rock_paper_scissors import game
+
+
+@pytest.mark.parametrize(
+    ("user", "computer", "expected"),
+    [
+        (0, 0, game.DRAW),
+        (1, 1, game.DRAW),
+        (2, 2, game.DRAW),
+        (0, 2, game.WIN),   # rock beats scissors
+        (1, 0, game.WIN),   # paper beats rock
+        (2, 1, game.WIN),   # scissors beats paper
+        (2, 0, game.LOSE),
+        (0, 1, game.LOSE),
+        (1, 2, game.LOSE),
+    ],
+)
+def test_determine_result(user, computer, expected):
+    assert game.determine_result(user, computer) == expected
+
+
+@pytest.mark.parametrize(
+    ("text", "expected"),
+    [("0", 0), (" 1 ", 1), ("2", 2), ("3", None), ("-1", None), ("rock", None), ("", None)],
+)
+def test_parse_choice(text, expected):
+    assert game.parse_choice(text) == expected
+
+
+def test_main_invalid_input(monkeypatch, capsys):
+    monkeypatch.setattr("builtins.input", lambda _: "9")
+    game.main()
+    assert "invalid" in capsys.readouterr().out
+
+
+def test_main_win(monkeypatch, capsys):
+    monkeypatch.setattr("builtins.input", lambda _: "0")
+    monkeypatch.setattr(game.random, "randint", lambda a, b: 2)
+    game.main()
+    assert "You win!" in capsys.readouterr().out
+
+
+def test_colorize_title_disabled_returns_plain():
+    assert game.colorize_title(enabled=False) == game.TITLE
+
+
+def test_colorize_title_enabled_colors_each_word():
+    out = game.colorize_title(enabled=True)
+    for color in game.TITLE_COLORS:
+        assert color in out
+    assert out.count(game.RESET) == len(game.TITLE.strip().splitlines())