Dateieingabe Verfahrens-DB und Linkliste in Tab A eingefügt, Verfahrensgebiets-Layerauswahl in Tab A eingefügt.

test/test_tab_a.py

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+import unittest
+import os
+import tempfile
+import sys
+
+# Plugin-Ordner in den Python-Pfad aufnehmen
+sys.path.insert(0, os.path.abspath(os.path.join(os.path.dirname(__file__), '..')))
+
+from qgis.PyQt.QtWidgets import QApplication
+from qgis.core import QgsProject, QgsVectorLayer
+
+from sn_plan41.ui.tabs import tab_a
+
+
+class TestTabA(unittest.TestCase):
+
+    @classmethod
+    def setUpClass(cls):
+        """Qt-Anwendung initialisieren."""
+        cls.app = QApplication([])
+
+    def setUp(self):
+        """Vor jedem Test: Projektvariablen löschen und TabA neu erzeugen."""
+        self.project = QgsProject.instance()
+        self.project.setCustomVariables({})
+
+        # TabA erzeugen
+        self.tab = TabA()
+
+        # Temporäre Testdateien
+        self.tmp_dir = tempfile.gettempdir()
+        self.test_db = os.path.join(self.tmp_dir, "test_db.gpkg")
+        self.test_link = os.path.join(self.tmp_dir, "test_link.gpkg")
+
+        # Dummy-Dateien anlegen
+        with open(self.test_db, "w") as f:
+            f.write("")
+        with open(self.test_link, "w") as f:
+            f.write("")
+
+    # ---------------------------------------------------------
+    # Verfahrens-DB speichern & wiederherstellen
+    # ---------------------------------------------------------
+    def test_save_and_restore_verfahrens_db(self):
+        self.tab.on_file_changed(self.test_db)
+
+        vars = self.project.customVariables()
+        self.assertEqual(vars.get("sn_verfahrens_db"), self.test_db)
+
+        tab2 = TabA()
+        self.assertEqual(tab2.verfahrens_db, self.test_db)
+        self.assertEqual(tab2.file_widget.filePath(), self.test_db)
+
+    # ---------------------------------------------------------
+    # Verfahrens-DB löschen
+    # ---------------------------------------------------------
+    def test_delete_verfahrens_db(self):
+        self.tab.on_file_changed(self.test_db)
+        self.tab.on_file_changed("")
+
+        vars = self.project.customVariables()
+        self.assertNotIn("sn_verfahrens_db", vars)
+        self.assertIsNone(self.tab.verfahrens_db)
+
+    # ---------------------------------------------------------
+    # Linkliste speichern & löschen
+    # ---------------------------------------------------------
+    def test_save_and_delete_linkliste(self):
+        self.tab.on_linkliste_changed(self.test_link)
+
+        vars = self.project.customVariables()
+        self.assertEqual(vars.get("sn_linkliste"), self.test_link)
+
+        self.tab.on_linkliste_changed("")
+
+        vars = self.project.customVariables()
+        self.assertNotIn("sn_linkliste", vars)
+
+    # ---------------------------------------------------------
+    # Layer-Vorauswahl
+    # ---------------------------------------------------------
+    def test_preselect_verfahrensgebiet_layer(self):
+        vg_layer = QgsVectorLayer("Polygon?crs=EPSG:4326", "Verfahrensgebiet", "memory")
+        other_layer = QgsVectorLayer("Polygon?crs=EPSG:4326", "AndereDaten", "memory")
+
+        self.project.addMapLayer(other_layer)
+        self.project.addMapLayer(vg_layer)
+
+        tab2 = TabA()
+
+        selected = tab2.layer_combo.currentLayer()
+        self.assertIsNotNone(selected)
+        self.assertEqual(selected.name(), "Verfahrensgebiet")
+
+    # ---------------------------------------------------------
+    # Gespeicherter Layer wird wiederhergestellt
+    # ---------------------------------------------------------
+    def test_restore_saved_layer(self):
+        vg_layer = QgsVectorLayer("Polygon?crs=EPSG:4326", "Verfahrensgebiet", "memory")
+        self.project.addMapLayer(vg_layer)
+
+        vars = {"sn_verfahrensgebiet_layer": vg_layer.id()}
+        self.project.setCustomVariables(vars)
+
+        tab2 = TabA()
+
+        selected = tab2.layer_combo.currentLayer()
+        self.assertEqual(selected.id(), vg_layer.id())
+
+
+if __name__ == "__main__":
+    unittest.main()