CI demo: metrics + Gitea Actions

tests/test_discounts.py

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+import sys
+
+import pytest
+
+from app.discounts import NoDiscount, discount_for
+from app.service import Order, OrderService
+
+
+def make_order() -> Order:
+    return Order({"чай": 300, "кофе": 700})
+
+
+def test_vip_discount() -> None:
+    service = OrderService(discount_for("vip"))
+    assert service.total(make_order()) == pytest.approx(900.0)
+
+
+def test_employee_discount() -> None:
+    service = OrderService(discount_for("employee"))
+    assert service.total(make_order()) == pytest.approx(700.0)
+
+
+def test_regular_has_no_discount() -> None:
+    service = OrderService(discount_for("regular"))
+    assert service.total(make_order()) == pytest.approx(1000.0)
+
+
+def test_unknown_type_falls_back_to_regular() -> None:
+    assert isinstance(discount_for("unknown"), NoDiscount)
+
+
+def test_python_version_supported() -> None:
+    # Для акта с матрицей: на Python 3.11 этот тест падает
+    assert sys.version_info >= (3, 12), (
+        f"нужен Python 3.12+, получено {sys.version.split()[0]}"
+    )