feat: Präfix System- für Tool-Serien reserviert, Kreditraten-Serie heißt System-Kreditraten (A12-T1)

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>

finance/tests/test_reserved.py

@@ -0,0 +1,50 @@
+import pytest
+
+from app.models.views import RESERVED_SCENARIO_NAME
+from app.reserved import SYSTEM_PREFIX, is_reserved_name
+from app.services.planning_chart import KREDITRATEN
+
+H = {"Authorization": "Bearer test-key"}
+
+
+def test_systemnamen_leiten_sich_vom_praefix_ab():
+    assert SYSTEM_PREFIX == "System-"
+    assert RESERVED_SCENARIO_NAME == "System-Ist"
+    assert KREDITRATEN == "System-Kreditraten"
+
+
+@pytest.mark.parametrize("name,expected", [
+    ("System-X", True), ("system-kreditraten", True), ("  SYSTEM-Ist  ", True),
+    ("Kreditraten", False), ("Systemkosten", False), ("Ist-System", False),
+    ("System", False),
+])
+def test_is_reserved_name(name, expected):
+    assert is_reserved_name(name) is expected
+
+
+@pytest.mark.parametrize("name", ["System-X", "system-kreditraten", "  SYSTEM-Ist  "])
+def test_kategorie_post_reserviert(client, name):
+    r = client.post("/api/categories", headers=H, json={"name": name})
+    assert r.status_code == 422
+    assert r.json()["detail"] == ("Namen, die mit »System-« beginnen, sind für "
+                                  "vom Tool erzeugte Einträge reserviert")
+
+
+def test_kategorie_patch_reserviert(client):
+    cat = client.post("/api/categories", headers=H, json={"name": "Normal"}).json()
+    r = client.patch(f"/api/categories/{cat['id']}", headers=H, json={"name": "System-Test"})
+    assert r.status_code == 422
+    names = [c["name"] for c in client.get("/api/categories", headers=H).json()]
+    assert "Normal" in names and "System-Test" not in names
+
+
+@pytest.mark.parametrize("name", ["Kreditraten", "Systemkosten", "Ist-System"])
+def test_kategorie_normale_namen_erlaubt(client, name):
+    assert client.post("/api/categories", headers=H, json={"name": name}).status_code == 201
+
+
+@pytest.mark.parametrize("name", ["System-Plan", "system-x"])
+def test_szenario_praefix_reserviert(client, name):
+    r = client.post("/api/scenarios", headers=H, json={"name": name})
+    assert r.status_code == 422
+    assert "reserviert" in r.json()["detail"]