Tirsvad
8a0e03a6ff
Add 19 pytest tests covering the report, resource check, coin processing, refunds, change, profit, make_coffee and the main loop. Add a tests package and put the project root on the pytest path. Doxygen output is clean. The repository description and topics were set on the git host. Closes #13 Closes #14 Closes #15 Closes #16 Closes #17 Task: MIL-003#1 Task: MIL-003#2 Task: MIL-003#3 Task: MIL-003#4 Task: MIL-003#5
108 lines
3.2 KiB
Python
108 lines
3.2 KiB
Python
"""!
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@file test_machine.py
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@brief Tests for making drinks and the main loop.
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"""
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import pytest
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from coffee_machine.constants import MENU
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from coffee_machine.main import main, make_coffee
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from tests.conftest import ScriptInput
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COINS_FOR_LATTE = ["10", "0", "0", "0"]
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NO_COINS = ["0", "0", "0", "0"]
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FULL_REPORT = "Water: 300ml\nMilk: 200ml\nCoffee: 100g\nMoney: $0.00"
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def test_make_coffee_uses_up_ingredients(capsys: pytest.CaptureFixture[str]) -> None:
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"""!
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@brief The drink's ingredients are deducted and the drink is served.
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"""
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resources = {"water": 300, "milk": 200, "coffee": 100}
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make_coffee("latte", MENU["latte"]["ingredients"], resources)
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assert resources == {"water": 100, "milk": 50, "coffee": 76}
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assert capsys.readouterr().out == "Here is your latte. Enjoy!\n"
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def test_off_ends_the_machine(script_input: ScriptInput) -> None:
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"""!
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@brief Typing off returns from the loop.
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"""
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script_input(["off"])
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main()
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def test_report_shows_starting_resources(
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script_input: ScriptInput, capsys: pytest.CaptureFixture[str]
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) -> None:
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"""!
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@brief A fresh machine reports full resources and no money.
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"""
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script_input(["report", "off"])
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main()
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assert FULL_REPORT in capsys.readouterr().out
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def test_unknown_input_is_rejected(
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script_input: ScriptInput, capsys: pytest.CaptureFixture[str]
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) -> None:
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"""!
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@brief Anything that is not a drink or command prints a message.
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"""
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script_input(["tea", "off"])
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main()
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assert "Sorry, we do not serve that." in capsys.readouterr().out
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def test_sale_updates_resources_and_profit(
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script_input: ScriptInput, capsys: pytest.CaptureFixture[str]
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) -> None:
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"""!
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@brief A paid drink is served, resources drop and profit rises by the price.
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"""
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script_input(["latte", *COINS_FOR_LATTE, "report", "off"])
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main()
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out = capsys.readouterr().out
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assert "Here is your latte. Enjoy!" in out
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assert "Water: 100ml\nMilk: 50ml\nCoffee: 76g\nMoney: $2.50" in out
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def test_refund_changes_nothing(
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script_input: ScriptInput, capsys: pytest.CaptureFixture[str]
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) -> None:
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"""!
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@brief An underpaid order is refunded: no drink, no profit.
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"""
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script_input(["espresso", *NO_COINS, "report", "off"])
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main()
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out = capsys.readouterr().out
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assert "Money refunded." in out
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assert "Enjoy" not in out
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assert FULL_REPORT in out
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def test_overpayment_adds_only_price_to_profit(
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script_input: ScriptInput, capsys: pytest.CaptureFixture[str]
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) -> None:
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"""!
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@brief Change is returned and only the price is counted as profit.
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"""
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script_input(["espresso", "7", "0", "0", "0", "report", "off"])
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main()
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out = capsys.readouterr().out
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assert "Here is $0.25 in change." in out
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assert "Money: $1.50" in out
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def test_order_refused_when_resources_run_out(
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script_input: ScriptInput, capsys: pytest.CaptureFixture[str]
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) -> None:
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"""!
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@brief After the water is used up, the next order is refused before payment.
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"""
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script_input(["latte", *COINS_FOR_LATTE, "latte", "off"])
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main()
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out = capsys.readouterr().out
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assert out.count("Please insert coins.") == 1
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assert "Sorry there is not enough water." in out
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