diff --git a/temporal/t.register/testsuite/test_t_register_raster.py b/temporal/t.register/testsuite/test_t_register_raster.py
index a2eee37498b..59a82a8acd7 100755
--- a/temporal/t.register/testsuite/test_t_register_raster.py
+++ b/temporal/t.register/testsuite/test_t_register_raster.py
@@ -110,17 +110,13 @@ def test_with_second_increment_and_intervall(self):
         t_rast_list.run()
 
         # Check registered raster maps
-        ref_str = "...".join(
-            [
-                "name|mapset|start_time|end_time",
-                "prec_1|...|2001-01-01 00:00:00|2001-01-01 00:00:01",
-                "prec_2|...|2001-01-01 00:00:01|2001-01-01 00:00:02",
-                "prec_3|...|2001-01-01 00:00:02|2001-01-01 00:00:03",
-                "prec_4|...|2001-01-01 00:00:03|2001-01-01 00:00:04",
-                "prec_5|...|2001-01-01 00:00:04|2001-01-01 00:00:05",
-                "prec_6|...|2001-01-01 00:00:05|2001-01-01 00:00:06",
-            ]
-        )
+        ref_str = """name|mapset|start_time|end_time
+prec_1|...|2001-01-01 00:00:00|2001-01-01 00:00:01
+prec_2|...|2001-01-01 00:00:01|2001-01-01 00:00:02
+prec_3|...|2001-01-01 00:00:02|2001-01-01 00:00:03
+prec_4|...|2001-01-01 00:00:03|2001-01-01 00:00:04
+prec_5|...|2001-01-01 00:00:04|2001-01-01 00:00:05
+prec_6|...|2001-01-01 00:00:05|2001-01-01 00:00:06"""
         self.assertLooksLike(str(t_rast_list.outputs.stdout), ref_str)
 
     def test_with_minutes_seconds_increment_and_intervall(self):
@@ -150,17 +146,13 @@ def test_with_minutes_seconds_increment_and_intervall(self):
         t_rast_list.run()
 
         # Check registered raster maps
-        ref_str = "...".join(
-            [
-                "name|mapset|start_time|end_time",
-                "prec_1|...|2001-01-01 00:00:00|2001-01-01 00:05:20",
-                "prec_2|...|2001-01-01 00:05:20|2001-01-01 00:10:40",
-                "prec_3|...|2001-01-01 00:10:40|2001-01-01 00:16:00",
-                "prec_4|...|2001-01-01 00:16:00|2001-01-01 00:21:20",
-                "prec_5|...|2001-01-01 00:21:20|2001-01-01 00:26:40",
-                "prec_6|...|2001-01-01 00:26:40|2001-01-01 00:32:00",
-            ]
-        )
+        ref_str = """name|mapset|start_time|end_time
+prec_1|...|2001-01-01 00:00:00|2001-01-01 00:05:20
+prec_2|...|2001-01-01 00:05:20|2001-01-01 00:10:40
+prec_3|...|2001-01-01 00:10:40|2001-01-01 00:16:00
+prec_4|...|2001-01-01 00:16:00|2001-01-01 00:21:20
+prec_5|...|2001-01-01 00:21:20|2001-01-01 00:26:40
+prec_6|...|2001-01-01 00:26:40|2001-01-01 00:32:00"""
         self.assertLooksLike(str(t_rast_list.outputs.stdout), ref_str)
 
     def test_with_hours_increment_and_intervall(self):
@@ -191,17 +183,13 @@ def test_with_hours_increment_and_intervall(self):
         t_rast_list.run()
 
         # Check registered raster maps
-        ref_str = "\n".join(
-            [
-                "name|mapset|start_time|end_time",
-                "prec_1|...|2001-01-01 00:00:00|2001-01-01 08:00:00",
-                "prec_2|...|2001-01-01 08:00:00|2001-01-01 16:00:00",
-                "prec_3|...|2001-01-01 16:00:00|2001-01-02 00:00:00",
-                "prec_4|...|2001-01-02 00:00:00|2001-01-02 08:00:00",
-                "prec_5|...|2001-01-02 08:00:00|2001-01-02 16:00:00",
-                "prec_6|...|2001-01-02 16:00:00|2001-01-03 00:00:00",
-            ]
-        )
+        ref_str = """name|mapset|start_time|end_time
+prec_1|...|2001-01-01 00:00:00|2001-01-01 08:00:00
+prec_2|...|2001-01-01 08:00:00|2001-01-01 16:00:00
+prec_3|...|2001-01-01 16:00:00|2001-01-02 00:00:00
+prec_4|...|2001-01-02 00:00:00|2001-01-02 08:00:00
+prec_5|...|2001-01-02 08:00:00|2001-01-02 16:00:00
+prec_6|...|2001-01-02 16:00:00|2001-01-03 00:00:00"""
         self.assertLooksLike(str(t_rast_list.outputs.stdout), ref_str)
 
     def test_with_days_increment_and_no_intervall(self):
@@ -230,17 +218,13 @@ def test_with_days_increment_and_no_intervall(self):
         t_rast_list.run()
 
         # Check registered raster maps
-        ref_str = "...".join(
-            [
-                "name|mapset|start_time|end_time",
-                "prec_1|...|2001-01-01 00:00:00|None",
-                "prec_2|...|2001-01-04 00:00:00|None",
-                "prec_3|...|2001-01-07 00:00:00|None",
-                "prec_4|...|2001-01-10 00:00:00|None",
-                "prec_5|...|2001-01-13 00:00:00|None",
-                "prec_6|...|2001-01-16 00:00:00|None",
-            ]
-        )
+        ref_str = """name|mapset|start_time|end_time
+prec_1|...|2001-01-01 00:00:00|None
+prec_2|...|2001-01-04 00:00:00|None
+prec_3|...|2001-01-07 00:00:00|None
+prec_4|...|2001-01-10 00:00:00|None
+prec_5|...|2001-01-13 00:00:00|None
+prec_6|...|2001-01-16 00:00:00|None"""
         self.assertLooksLike(str(t_rast_list.outputs.stdout), ref_str)
 
     def test_with_weeks_increment_and_no_intervall(self):
@@ -269,17 +253,13 @@ def test_with_weeks_increment_and_no_intervall(self):
         t_rast_list.run()
 
         # Check registered raster maps
-        ref_str = "...".join(
-            [
-                "name|mapset|start_time|end_time",
-                "prec_1|...|2001-01-01 00:00:00|None",
-                "prec_2|...|2001-01-29 00:00:00|None",
-                "prec_3|...|2001-02-26 00:00:00|None",
-                "prec_4|...|2001-03-26 00:00:00|None",
-                "prec_5|...|2001-04-23 00:00:00|None",
-                "prec_6|...|2001-05-21 00:00:00|None",
-            ]
-        )
+        ref_str = """name|mapset|start_time|end_time
+prec_1|...|2001-01-01 00:00:00|None
+prec_2|...|2001-01-29 00:00:00|None
+prec_3|...|2001-02-26 00:00:00|None
+prec_4|...|2001-03-26 00:00:00|None
+prec_5|...|2001-04-23 00:00:00|None
+prec_6|...|2001-05-21 00:00:00|None"""
         self.assertLooksLike(str(t_rast_list.outputs.stdout), ref_str)
 
     def test_with_months_increment_and_no_intervall(self):
@@ -308,17 +288,13 @@ def test_with_months_increment_and_no_intervall(self):
         t_rast_list.run()
 
         # Check registered raster maps
-        ref_str = "...".join(
-            [
-                "name|mapset|start_time|end_time",
-                "prec_1|...|2001-08-01 00:00:00|None",
-                "prec_2|...|2001-10-01 00:00:00|None",
-                "prec_3|...|2001-12-01 00:00:00|None",
-                "prec_4|...|2002-02-01 00:00:00|None",
-                "prec_5|...|2002-04-01 00:00:00|None",
-                "prec_6|...|2002-06-01 00:00:00|None",
-            ]
-        )
+        ref_str = """name|mapset|start_time|end_time
+prec_1|...|2001-08-01 00:00:00|None
+prec_2|...|2001-10-01 00:00:00|None
+prec_3|...|2001-12-01 00:00:00|None
+prec_4|...|2002-02-01 00:00:00|None
+prec_5|...|2002-04-01 00:00:00|None
+prec_6|...|2002-06-01 00:00:00|None"""
         self.assertLooksLike(str(t_rast_list.outputs.stdout), ref_str)
 
     def test_re_registering(self):
@@ -351,17 +327,13 @@ def test_re_registering(self):
         t_rast_list.run()
 
         # Check registered raster maps
-        ref_str = "...".join(
-            [
-                "name|mapset|start_time|end_time",
-                "prec_1|...|2001-01-01 00:00:00|None",
-                "prec_2|...|2021-04-02 04:00:00|None",
-                "prec_3|...|2041-07-03 08:00:00|None",
-                "prec_4|...|2061-10-04 12:00:00|None",
-                "prec_5|...|2082-01-05 16:00:00|None",
-                "prec_6|...|2102-04-06 20:00:00|None",
-            ]
-        )
+        ref_str = """name|mapset|start_time|end_time
+prec_1|...|2001-01-01 00:00:00|None
+prec_2|...|2021-04-02 04:00:00|None
+prec_3|...|2041-07-03 08:00:00|None
+prec_4|...|2061-10-04 12:00:00|None
+prec_5|...|2082-01-05 16:00:00|None
+prec_6|...|2102-04-06 20:00:00|None"""
         self.assertLooksLike(str(t_rast_list.outputs.stdout), ref_str)
 
         # Register with different valid time again
@@ -396,17 +368,13 @@ def test_re_registering(self):
         t_rast_list.run()
 
         # Check registered raster maps
-        ref_str = "...".join(
-            [
-                "name|mapset|start_time|end_time",
-                "prec_1|...|2001-01-01 00:00:00|None",
-                "prec_2|...|2100-10-10 09:00:00|None",
-                "prec_3|...|2200-07-19 18:00:00|None",
-                "prec_4|...|2300-04-29 03:00:00|None",
-                "prec_5|...|2400-02-07 12:00:00|None",
-                "prec_6|...|2499-11-16 21:00:00|None",
-            ]
-        )
+        ref_str = """name|mapset|start_time|end_time
+prec_1|...|2001-01-01 00:00:00|None
+prec_2|...|2100-10-10 09:00:00|None
+prec_3|...|2200-07-19 18:00:00|None
+prec_4|...|2300-04-29 03:00:00|None
+prec_5|...|2400-02-07 12:00:00|None
+prec_6|...|2499-11-16 21:00:00|None"""
         self.assertLooksLike(str(t_rast_list.outputs.stdout), ref_str)
 
         # Register with different valid time again creating an interval
@@ -442,17 +410,13 @@ def test_re_registering(self):
         t_rast_list.run()
 
         # Check registered raster maps
-        ref_str = "...".join(
-            [
-                "name|mapset|start_time|end_time",
-                "prec_1|...|2001-01-01 00:00:00|2100-10-10 09:00:00",
-                "prec_2|...|2100-10-10 09:00:00|2200-07-19 18:00:00",
-                "prec_3|...|2200-07-19 18:00:00|2300-04-29 03:00:00",
-                "prec_4|...|2300-04-29 03:00:00|2400-02-07 12:00:00",
-                "prec_5|...|2400-02-07 12:00:00|2499-11-17 21:00:00",
-                "prec_6|...|2499-11-16 21:00:00|2599-08-26 06:00:00",
-            ]
-        )
+        ref_str = """name|mapset|start_time|end_time
+prec_1|...|2001-01-01 00:00:00|2100-10-10 09:00:00
+prec_2|...|2100-10-10 09:00:00|2200-07-19 18:00:00
+prec_3|...|2200-07-19 18:00:00|2300-04-29 03:00:00
+prec_4|...|2300-04-29 03:00:00|2400-02-07 12:00:00
+prec_5|...|2400-02-07 12:00:00|2499-11-17 21:00:00
+prec_6|...|2499-11-16 21:00:00|2599-08-26 06:00:00"""
         self.assertLooksLike(str(t_rast_list.outputs.stdout), ref_str)
 
 
diff --git a/temporal/t.register/testsuite/test_t_register_raster_different_local.py b/temporal/t.register/testsuite/test_t_register_raster_different_local.py
index aa888a46cf6..5c0467ae06f 100644
--- a/temporal/t.register/testsuite/test_t_register_raster_different_local.py
+++ b/temporal/t.register/testsuite/test_t_register_raster_different_local.py
@@ -129,17 +129,13 @@ def test_with_different_local(self):
         t_rast_list.run()
 
         # Check registered raster maps
-        ref_str = "...".join(
-            [
-                "name|mapset|start_time|end_time",
-                "prec_1|...|2000-01-01 00:00:00|2000-02-01 00:00:00",
-                "prec_2|...|2000-02-01 00:00:00|2000-03-01 00:00:00",
-                "prec_3|...|2000-03-01 00:00:00|2000-04-01 00:00:00",
-                "prec_4|...|2000-04-01 00:00:00|2000-05-01 00:00:00",
-                "prec_5|...|2000-05-01 00:00:00|2000-06-01 00:00:00",
-                "prec_6|...|2000-06-01 00:00:00|2000-07-01 00:00:00",
-            ]
-        )
+        ref_str = """name|mapset|start_time|end_time
+prec_1|...|2000-01-01 00:00:00|2000-02-01 00:00:00
+prec_2|...|2000-02-01 00:00:00|2000-03-01 00:00:00
+prec_3|...|2000-03-01 00:00:00|2000-04-01 00:00:00
+prec_4|...|2000-04-01 00:00:00|2000-05-01 00:00:00
+prec_5|...|2000-05-01 00:00:00|2000-06-01 00:00:00
+prec_6|...|2000-06-01 00:00:00|2000-07-01 00:00:00"""
         self.assertLooksLike(str(t_rast_list.outputs.stdout), ref_str)
 
 
diff --git a/temporal/t.register/testsuite/test_t_register_raster_file.py b/temporal/t.register/testsuite/test_t_register_raster_file.py
index c8f8abeb55c..c05a9d07140 100755
--- a/temporal/t.register/testsuite/test_t_register_raster_file.py
+++ b/temporal/t.register/testsuite/test_t_register_raster_file.py
@@ -107,17 +107,13 @@ def test_with_file_and_increment(self):
         t_rast_list.run()
 
         # Check registered raster maps
-        ref_str = "...".join(
-            [
-                "name|mapset|start_time|end_time",
-                "prec_1|...|2001-01-01 00:00:00|None",
-                "prec_2|...|2001-02-01 00:00:00|None",
-                "prec_3|...|2001-03-01 00:00:00|None",
-                "prec_4|...|2001-04-01 00:00:00|None",
-                "prec_5|...|2001-05-01 00:00:00|None",
-                "prec_6|...|2001-06-01 00:00:00|None",
-            ]
-        )
+        ref_str = """name|mapset|start_time|end_time
+prec_1|...|2001-01-01 00:00:00|None
+prec_2|...|2001-02-01 00:00:00|None
+prec_3|...|2001-03-01 00:00:00|None
+prec_4|...|2001-04-01 00:00:00|None
+prec_5|...|2001-05-01 00:00:00|None
+prec_6|...|2001-06-01 00:00:00|None"""
         self.assertLooksLike(str(t_rast_list.outputs.stdout), ref_str)
 
     def test_with_file_and_no_increment(self):
@@ -147,18 +143,14 @@ def test_with_file_and_no_increment(self):
         t_rast_list = SimpleModule("t.rast.list", input="precip_abs8")
         t_rast_list.run()
 
-        # Check registered raster maps
-        ref_str = "...".join(
-            [
-                "name|mapset|start_time|end_time",
-                "prec_1|...|2001-01-01 00:00:00|None",
-                "prec_2|...|2001-01-01 00:00:00|None",
-                "prec_3|...|2001-01-01 00:00:00|None",
-                "prec_4|...|2001-01-01 00:00:00|None",
-                "prec_5|...|2001-01-01 00:00:00|None",
-                "prec_6|...|2001-01-01 00:00:00|None",
-            ]
-        )
+        # Check registered raster maps - using newlines instead of ...
+        ref_str = """name|mapset|start_time|end_time
+prec_1|...|2001-01-01 00:00:00|None
+prec_2|...|2001-01-01 00:00:00|None
+prec_3|...|2001-01-01 00:00:00|None
+prec_4|...|2001-01-01 00:00:00|None
+prec_5|...|2001-01-01 00:00:00|None
+prec_6|...|2001-01-01 00:00:00|None"""
         self.assertLooksLike(str(t_rast_list.outputs.stdout), ref_str)
 
     def test_with_file_increment_and_intervall(self):
@@ -192,32 +184,24 @@ def test_with_file_increment_and_intervall(self):
         t_rast_list.run()
 
         # Check registered raster maps
-        ref_str = "\n".join(
-            [
-                "name|mapset|start_time|end_time",
-                "prec_1|...|2001-01-01 00:00:00|2001-02-01 00:00:00",
-                "prec_2|...|2001-02-01 00:00:00|2001-03-01 00:00:00",
-                "prec_3|...|2001-03-01 00:00:00|2001-04-01 00:00:00",
-                "prec_4|...|2001-04-01 00:00:00|2001-05-01 00:00:00",
-                "prec_5|...|2001-05-01 00:00:00|2001-06-01 00:00:00",
-                "prec_6|...|2001-06-01 00:00:00|2001-07-01 00:00:00",
-            ]
-        )
+        ref_str = """name|mapset|start_time|end_time
+prec_1|...|2001-01-01 00:00:00|2001-02-01 00:00:00
+prec_2|...|2001-02-01 00:00:00|2001-03-01 00:00:00
+prec_3|...|2001-03-01 00:00:00|2001-04-01 00:00:00
+prec_4|...|2001-04-01 00:00:00|2001-05-01 00:00:00
+prec_5|...|2001-05-01 00:00:00|2001-06-01 00:00:00
+prec_6|...|2001-06-01 00:00:00|2001-07-01 00:00:00"""
         self.assertLooksLike(str(t_rast_list.outputs.stdout), ref_str)
 
     def test_with_start_in_file(self):
         tmp_file = gs.tempfile()
         Path(tmp_file).write_text(
-            "\n".join(
-                [
-                    "prec_1|2001-01-01",
-                    "prec_2|2001-02-01",
-                    "prec_3|2001-03-01",
-                    "prec_4|2001-04-01",
-                    "prec_5|2001-05-01",
-                    "prec_6|2001-06-01",
-                ]
-            )
+            """prec_1|2001-01-01
+prec_2|2001-02-01
+prec_3|2001-03-01
+prec_4|2001-04-01
+prec_5|2001-05-01
+prec_6|2001-06-01"""
         )
 
         register_module = SimpleModule(
@@ -242,33 +226,25 @@ def test_with_start_in_file(self):
         t_rast_list = SimpleModule("t.rast.list", input="precip_abs8")
         t_rast_list.run()
 
-        # Check registered raster maps
-        ref_str = "...".join(
-            [
-                "name|mapset|start_time|end_time",
-                "prec_1|...|2001-01-01 00:00:00|None",
-                "prec_2|...|2001-02-01 00:00:00|None",
-                "prec_3|...|2001-03-01 00:00:00|None",
-                "prec_4|...|2001-04-01 00:00:00|None",
-                "prec_5|...|2001-05-01 00:00:00|None",
-                "prec_6|...|2001-06-01 00:00:00|None",
-            ]
-        )
+        # Check registered raster maps - using newlines instead of ...
+        ref_str = """name|mapset|start_time|end_time
+prec_1|...|2001-01-01 00:00:00|None
+prec_2|...|2001-02-01 00:00:00|None
+prec_3|...|2001-03-01 00:00:00|None
+prec_4|...|2001-04-01 00:00:00|None
+prec_5|...|2001-05-01 00:00:00|None
+prec_6|...|2001-06-01 00:00:00|None"""
         self.assertLooksLike(str(t_rast_list.outputs.stdout), ref_str)
 
     def test_with_start_in_file_and_increment(self):
         tmp_file = gs.tempfile()
         Path(tmp_file).write_text(
-            "\n".join(
-                [
-                    "prec_1|2001-01-01",
-                    "prec_2|2001-02-01",
-                    "prec_3|2001-03-01",
-                    "prec_4|2001-04-01",
-                    "prec_5|2001-05-01",
-                    "prec_6|2001-06-01",
-                ]
-            )
+            """prec_1|2001-01-01
+prec_2|2001-02-01
+prec_3|2001-03-01
+prec_4|2001-04-01
+prec_5|2001-05-01
+prec_6|2001-06-01"""
         )
 
         register_module = SimpleModule(
@@ -287,16 +263,12 @@ def test_with_start_in_file_and_increment(self):
     def test_with_start_and_end_in_file_and_interval(self):
         tmp_file = gs.tempfile()
         Path(tmp_file).write_text(
-            "\n".join(
-                [
-                    "prec_1|2001-01-01|2001-04-01",
-                    "prec_2|2001-04-01|2001-07-01",
-                    "prec_3|2001-07-01|2001-10-01",
-                    "prec_4|2001-10-01|2002-01-01",
-                    "prec_5|2002-01-01|2002-04-01",
-                    "prec_6|2002-04-01|2002-07-01",
-                ]
-            )
+            """prec_1|2001-01-01|2001-04-01
+prec_2|2001-04-01|2001-07-01
+prec_3|2001-07-01|2001-10-01
+prec_4|2001-10-01|2002-01-01
+prec_5|2002-01-01|2002-04-01
+prec_6|2002-04-01|2002-07-01"""
         )
 
         register_module = SimpleModule(
@@ -352,18 +324,14 @@ def test_with_mapset_and_semantic_label(self):
         t_rast_list = SimpleModule("t.rast.list", input="precip_abs8")
         t_rast_list.run()
 
-        # Check registered raster maps
-        ref_str = "...".join(
-            [
-                "name|mapset|start_time|end_time",
-                "prec_1|...|2001-01-01 00:00:00|2001-04-01 00:00:00",
-                "prec_2|...|2001-04-01 00:00:00|2001-07-01 00:00:00",
-                "prec_3|...|2001-07-01 00:00:00|2001-10-01 00:00:00",
-                "prec_4|...|2001-10-01 00:00:00|2002-01-01 00:00:00",
-                "prec_5|...|2002-01-01 00:00:00|2002-04-01 00:00:00",
-                "prec_6|...|2002-04-01 00:00:00|2002-07-01 00:00:00",
-            ]
-        )
+        # Check registered raster maps - using newlines instead of ...
+        ref_str = """name|mapset|start_time|end_time
+prec_1|...|2001-01-01 00:00:00|2001-04-01 00:00:00
+prec_2|...|2001-04-01 00:00:00|2001-07-01 00:00:00
+prec_3|...|2001-07-01 00:00:00|2001-10-01 00:00:00
+prec_4|...|2001-10-01 00:00:00|2002-01-01 00:00:00
+prec_5|...|2002-01-01 00:00:00|2002-04-01 00:00:00
+prec_6|...|2002-04-01 00:00:00|2002-07-01 00:00:00"""
         self.assertLooksLike(str(t_rast_list.outputs.stdout), ref_str)
 
 
diff --git a/temporal/t.register/testsuite/test_t_register_raster_mapmetadata.py b/temporal/t.register/testsuite/test_t_register_raster_mapmetadata.py
index 3e434856d42..d466e91a0f6 100644
--- a/temporal/t.register/testsuite/test_t_register_raster_mapmetadata.py
+++ b/temporal/t.register/testsuite/test_t_register_raster_mapmetadata.py
@@ -120,17 +120,13 @@ def test_register_metadata_from_file(self):
         t_rast_list.run()
 
         # Check registered raster maps
-        ref_str = "\n".join(
-            [
-                "name|mapset|start_time|end_time",
-                "prec_1|...|2001-01-01 00:00:00|2001-01-01 08:00:00",
-                "prec_2|...|2001-01-01 08:00:00|2001-01-01 16:00:00",
-                "prec_3|...|2001-01-01 16:00:00|2001-01-02 00:00:00",
-                "prec_4|...|2001-01-02 00:00:00|2001-01-02 08:00:00",
-                "prec_5|...|2001-01-02 08:00:00|2001-01-02 16:00:00",
-                "prec_6|...|2001-01-02 16:00:00|2001-01-03 00:00:00",
-            ]
-        )
+        ref_str = """name|mapset|start_time|end_time
+prec_1|...|2001-01-01 00:00:00|2001-01-01 08:00:00
+prec_2|...|2001-01-01 08:00:00|2001-01-01 16:00:00
+prec_3|...|2001-01-01 16:00:00|2001-01-02 00:00:00
+prec_4|...|2001-01-02 00:00:00|2001-01-02 08:00:00
+prec_5|...|2001-01-02 08:00:00|2001-01-02 16:00:00
+prec_6|...|2001-01-02 16:00:00|2001-01-03 00:00:00"""
         self.assertLooksLike(str(t_rast_list.outputs.stdout), ref_str)