r.semantic.label: fix print raster map semantic label (#3595)

scripts/r.semantic.label/r.semantic.label.py

@@ -59,7 +59,7 @@ def print_map_semantic_label(name, label_reader):
         with RasterRow(name) as rast:
             semantic_label = rast.info.semantic_label
             if semantic_label:
-                label_reader.print_info(semantic_label)
+                label_reader.print_info(semantic_label=semantic_label)
             else:
                 gs.info(_("No semantic label assigned to <{}>").format(name))
     except OpenError as e:

scripts/r.semantic.label/testsuite/test_r_semantic_label.py

@@ -1,6 +1,6 @@
 from grass.gunittest.case import TestCase
 from grass.gunittest.main import test
-from grass.gunittest.gmodules import SimpleModule, call_module
+from grass.gunittest.gmodules import SimpleModule
 
 from grass.script.core import tempname
 from grass.pygrass.gis import Mapset
@@ -46,6 +46,21 @@ def test_semantic_label_assign(self):
         # check also using pygrass
         self.assertEqual(self.read_semantic_label(), self.semantic_label)
 
+    def test_semantic_label_print(self):
+        semantic_label = "S2_1"
+        semantic_label_desc = "S2 Visible (Coastal/Aerosol)"
+        module = SimpleModule(
+            "r.semantic.label",
+            map=self.map,
+            semantic_label=semantic_label,
+        )
+        self.assertModule(module)
+
+        module = SimpleModule("r.semantic.label", map=self.map, operation="print")
+        self.assertModule(module)
+
+        self.assertEqual(module.outputs.stdout.strip(), semantic_label_desc)
+
     def test_semantic_label_dissociate(self):
         module = SimpleModule("r.semantic.label", operation="remove", map=self.map)
         self.assertModule(module)