A bit of repairs to vector tiles algorithm test

python/plugins/processing/tests/AlgorithmsTestBase.py

@@ -170,6 +170,12 @@ def load_param(self, param, id=None):
         try:
             if param['type'] in ('vector', 'raster', 'table'):
                 return self.load_layer(id, param).id()
+            elif param['type'] == 'vrtlayers':
+                vals = []
+                for p in param['params']:
+                    p['layer'] = self.load_layer(None, {'type': 'vector', 'name': p['layer']})
+                    vals.append(p)
+                return vals
             elif param['type'] == 'multi':
                 return [self.load_param(p) for p in param['params']]
             elif param['type'] == 'file':

python/plugins/processing/tests/testdata/qgis_algorithm_tests4.yaml

@@ -2242,9 +2242,11 @@ tests:
     name: Generate vector tiles (Directory)
     params:
       LAYERS:
-      - layer: ../../../../../tests/testdata/lines.shp
-      - layer: ../../../../../tests/testdata/points.shp
-      - layer: ../../../../../tests/testdata/polys.shp
+        type: vrtlayers
+        params:
+        - layer: ../../../../../tests/testdata/lines.shp
+        - layer: ../../../../../tests/testdata/points.shp
+        - layer: ../../../../../tests/testdata/polys.shp
       MAX_ZOOM: 3
       MIN_ZOOM: 1
       XYZ_TEMPLATE: '{z}/{x}/{y}.pbf'