feat: CSV-Import ueber bestehende Pipeline mit dreiwertiger Saldo-Pruefung

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

finance/tests/test_gui.py

@@ -62,6 +62,41 @@ def test_import_list_fragment_renders_after_login(client):
     assert "Noch keine Imports" in r.text
 
 
+def test_preview_fragment_shows_balance_ok_none_for_format_without_saldo(
+        client, tmp_path, monkeypatch):
+    # UX-Regel: Saldo-Status ist IMMER sichtbar, auch wenn das Format (hier
+    # HVB-CSV) keine Saldodaten liefert - dreiwertig statt faelschlich "rot".
+    monkeypatch.setenv("FB_INBOX_DIR", str(tmp_path / "inbox"))
+    monkeypatch.setenv("FB_UPLOADS_DIR", str(tmp_path / "uploads"))
+    from app.config import get_settings
+    get_settings.cache_clear()
+    from tests.test_import_api import _hvb_csv_bytes
+    sid = client.post("/api/imports/upload", headers=H,
+                      files={"file": ("HVB_gui.csv", _hvb_csv_bytes(), "text/csv")}
+                      ).json()["id"]
+
+    client.post("/login", data={"username": "admin", "password": "geheim"})
+    r = client.get(f"/import/{sid}/preview-fragment")
+    assert r.status_code == 200
+    assert "Saldo-Prüfung: nicht verfügbar (Format ohne Saldodaten)" in r.text
+
+
+def test_preview_fragment_shows_balance_ok_true_for_vr_csv(client, tmp_path, monkeypatch):
+    monkeypatch.setenv("FB_INBOX_DIR", str(tmp_path / "inbox"))
+    monkeypatch.setenv("FB_UPLOADS_DIR", str(tmp_path / "uploads"))
+    from app.config import get_settings
+    get_settings.cache_clear()
+    from tests.test_import_api import _vr_csv_bytes
+    sid = client.post("/api/imports/upload", headers=H,
+                      files={"file": ("VR_gui.csv", _vr_csv_bytes(), "text/csv")}
+                      ).json()["id"]
+
+    client.post("/login", data={"username": "admin", "password": "geheim"})
+    r = client.get(f"/import/{sid}/preview-fragment")
+    assert r.status_code == 200
+    assert "Saldo plausibel" in r.text
+
+
 def test_version_visible(client):
     from pathlib import Path
     version = (Path(__file__).resolve().parent.parent / "VERSION").read_text().strip()