Tirsvad
4abf984382
Order imports, format with ruff, make the account key constants Final so mypy --strict accepts them, and type the test helpers. Configure ruff and mypy in pyproject.toml and pin the dev tool versions. All modules, classes and functions already carry Doxygen comments; doxygen Doxyfile builds without warnings. Task: MIL-004#2 Closes #18
89 lines
2.6 KiB
Python
89 lines
2.6 KiB
Python
"""@file test_game_logic.py
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@brief Tests for the pure game functions.
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"""
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import random
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import pytest
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from higher_lower.constants import KEY_NAME
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from higher_lower.game_data import Account, data
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from higher_lower.game_logic import (
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check_answer,
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format_data,
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get_random_account,
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pick_pair,
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)
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def test_get_random_account_returns_an_entry_of_the_data() -> None:
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"""@brief The drawn account comes from the data set."""
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assert get_random_account(rng=random.Random(1)) in data
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def test_get_random_account_is_repeatable_with_a_seed() -> None:
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"""@brief The same seed draws the same account."""
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assert get_random_account(rng=random.Random(7)) == get_random_account(
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rng=random.Random(7)
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)
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def test_pick_pair_never_returns_the_same_account() -> None:
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"""@brief A and B are always different entries."""
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rng = random.Random(0)
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for _ in range(200):
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first, second = pick_pair(rng=rng)
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assert first[KEY_NAME] != second[KEY_NAME]
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def test_pick_pair_with_two_accounts_returns_both() -> None:
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"""@brief With only two accounts, the pair holds both of them."""
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two = data[:2]
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first, second = pick_pair(two, random.Random(3))
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assert {first[KEY_NAME], second[KEY_NAME]} == {a[KEY_NAME] for a in two}
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def test_pick_pair_with_one_account_raises() -> None:
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"""@brief A pair cannot be drawn from a single account."""
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with pytest.raises(ValueError):
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pick_pair(data[:1])
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def test_format_data_describes_the_account() -> None:
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"""@brief The description holds name, description and country."""
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account: Account = {
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"name": "Nike",
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"follower_count": 109,
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"description": "Sportswear multinational",
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"country": "United States",
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}
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assert (
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format_data(account) == "Nike, a Sportswear multinational, from United States"
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)
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@pytest.mark.parametrize(
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("guess", "a_followers", "b_followers", "expected"),
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[
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("a", 200, 100, True),
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("a", 100, 200, False),
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("b", 100, 200, True),
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("b", 200, 100, False),
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("A", 200, 100, True),
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("B", 100, 200, True),
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("a", 100, 100, True),
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("b", 100, 100, True),
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],
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)
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def test_check_answer(
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guess: str, a_followers: int, b_followers: int, expected: bool
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) -> None:
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"""@brief The answer is right for the higher account, and for either on a tie."""
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assert check_answer(guess, a_followers, b_followers) is expected
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def test_check_answer_rejects_an_unknown_choice() -> None:
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"""@brief A guess other than a or b is an error."""
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with pytest.raises(ValueError):
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check_answer("c", 1, 2)
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