feat: Kategorien-Verwaltung auf der Admin-Seite

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

finance/tests/test_admin.py

@@ -234,6 +234,21 @@ def test_admin_passwort_success_returns_200_with_confirmation(
     assert r2.status_code == 200
 
 
+# --- Kategorien-Verwaltung --------------------------------------------------
+
+def test_admin_zeigt_kategorien_verwaltung(client_with_env_file, db):
+    from app.models.tables import Category
+    client, password = client_with_env_file
+    client.post("/login", data={"username": "admin", "password": password})
+    db.add(Category(name="Admin-Kat"))
+    db.commit()
+    r = client.get("/admin").text
+    assert "Kategorien" in r and "Admin-Kat" in r
+    assert "Neue Kategorie anlegen" in r
+    assert 'hx-patch="/api/categories/' in r
+    assert 'hx-post="/api/categories"' in r
+
+
 # --- Regeln neu anwenden ---------------------------------------------------
 
 def test_apply_rules_retroactively_categorizes_uncategorized_confirmed_tx(db):

finance/tests/test_crud_api.py

@@ -113,6 +113,23 @@ def test_rules_categorize(client):
     assert txs[0]["category_id"] == cat["id"]
 
 
+def test_category_patch(client):
+    a = client.post("/api/categories", headers=H, json={"name": "Kat-A"}).json()
+    b = client.post("/api/categories", headers=H, json={"name": "Kat-B"}).json()
+    # Umbenennen
+    r = client.patch(f"/api/categories/{a['id']}", headers=H, json={"name": "Kat-A-neu"})
+    assert r.status_code == 200 and r.json()["name"] == "Kat-A-neu"
+    # Umbenennen auf den EIGENEN Namen ist erlaubt (kein 409)
+    r = client.patch(f"/api/categories/{a['id']}", headers=H, json={"name": "Kat-A-neu"})
+    assert r.status_code == 200
+    # Kollision mit anderer Kategorie -> 409
+    r = client.patch(f"/api/categories/{a['id']}", headers=H, json={"name": "Kat-B"})
+    assert r.status_code == 409
+    # unbekannte id -> 404
+    assert client.patch("/api/categories/99999", headers=H,
+                        json={"name": "x"}).status_code == 404
+
+
 def test_patch_account_name(client):
     acc = client.post("/api/accounts", headers=H, json={
         "bank": "DKB", "iban": "DE71", "name": "DE71", "type": "giro"}).json()