Add test for parentQuantityName

python/testing/__init__.py

@@ -305,6 +305,19 @@ class QgisTestCase(unittest.TestCase):
 
         return result
 
+    @staticmethod
+    def get_test_data_path(file_path: str) -> Path:
+        """
+        Returns the full path to a file contained within the test data
+        directory.
+        """
+        from utilities import unitTestDataPath
+
+        return (
+            Path(unitTestDataPath()) /
+            (file_path[1:] if file_path.startswith('/') else file_path)
+        )
+
     def assertLayersEqual(self, layer_expected, layer_result, **kwargs):
         """
         :param layer_expected: The first layer to compare

tests/src/python/CMakeLists.txt

@@ -177,6 +177,7 @@ ADD_PYTHON_TEST(PyQgsMargins test_qgsmargins.py)
 ADD_PYTHON_TEST(PyQgsMarkerLineSymbolLayer test_qgsmarkerlinesymbollayer.py)
 ADD_PYTHON_TEST(PyQgsMatrix4x4 test_qgsmatrix4x4.py)
 ADD_PYTHON_TEST(PyQgsMergedFeatureRenderer test_qgsmergedfeaturerenderer.py)
+ADD_PYTHON_TEST(PyQgsMeshLayer test_qgsmeshlayer.py)
 ADD_PYTHON_TEST(PyQgsMeshLayerElevationProperties test_qgsmeshlayerelevationproperties.py)
 ADD_PYTHON_TEST(PyQgsMeshLayerRenderer test_qgsmeshlayerrenderer.py)
 ADD_PYTHON_TEST(PyQgsMessageLog test_qgsmessagelog.py)

tests/src/python/test_qgsmeshlayer.py

@@ -0,0 +1,68 @@
+"""QGIS Unit tests for QgsMeshLayer
+
+.. note:: This program is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2 of the License, or
+(at your option) any later version.
+"""
+
+from qgis.core import (
+    QgsMeshLayer,
+    QgsMeshDatasetIndex
+)
+import unittest
+from qgis.testing import start_app, QgisTestCase
+
+start_app()
+
+
+class TestQgsMeshLayer(QgisTestCase):
+
+    def test_dataset_group_metadata(self):
+        """
+        Test datasetGroupMetadata
+        """
+        layer = QgsMeshLayer(
+            self.get_test_data_path('mesh/netcdf_parent_quantity.nc').as_posix(),
+            'mesh',
+            'mdal'
+        )
+        self.assertTrue(layer.isValid())
+
+        self.assertEqual(
+            layer.datasetGroupMetadata(QgsMeshDatasetIndex(0)).name(),
+            'air_temperature_height:10')
+        self.assertEqual(
+            layer.datasetGroupMetadata(
+                QgsMeshDatasetIndex(0)).parentQuantityName(),
+            'air_temperature_height')
+        self.assertEqual(
+            layer.datasetGroupMetadata(QgsMeshDatasetIndex(1)).name(),
+            'air_temperature_height:20')
+        self.assertEqual(
+            layer.datasetGroupMetadata(
+                QgsMeshDatasetIndex(1)).parentQuantityName(),
+            'air_temperature_height')
+        self.assertEqual(
+            layer.datasetGroupMetadata(QgsMeshDatasetIndex(2)).name(),
+            'air_temperature_height:30')
+        self.assertEqual(
+            layer.datasetGroupMetadata(
+                QgsMeshDatasetIndex(2)).parentQuantityName(),
+            'air_temperature_height')
+        self.assertEqual(
+            layer.datasetGroupMetadata(QgsMeshDatasetIndex(3)).name(),
+            'air_temperature_height:5')
+        self.assertEqual(
+            layer.datasetGroupMetadata(
+                QgsMeshDatasetIndex(3)).parentQuantityName(),
+            'air_temperature_height')
+        self.assertFalse(
+            layer.datasetGroupMetadata(QgsMeshDatasetIndex(4)).name())
+        self.assertFalse(
+            layer.datasetGroupMetadata(
+                QgsMeshDatasetIndex(4)).parentQuantityName())
+
+
+if __name__ == '__main__':
+    unittest.main()