diff --git a/tests/test_api.py b/tests/test_api.py
index 1dc3c2c..39b0e38 100644
--- a/tests/test_api.py
+++ b/tests/test_api.py
@@ -167,10 +167,9 @@ def test_netcdf_extract_bbox_time():
         [-90.0, 0.0, 90.0, 357.5], ['2002-07-01', '2002-07-31']]
 
 
-def test_gpkg_extract_bboxs():
-    result = geoextent.fromFile("tests/testdata/geopackage/nc.gpkg", bbox=True)
-    assert result['bbox'] == pytest.approx([-84.323835, 33.882102, -75.456585, 36.589757], abs=tolerance)
-    assert result["crs"] == "4326"
+def test_gpkg_extract_tbox():
+    result = geoextent.fromFile("tests/testdata/geopackage/wandelroute_maastricht.gpkg", tbox=True)
+    assert result['tbox'] == ['2021-01-05', '2021-01-05']
 
 
 @pytest.mark.skipif("TRAVIS" in os.environ and os.environ["TRAVIS"] == "true",
diff --git a/tests/test_cli.py b/tests/test_cli.py
index 3156285..2cc7bea 100644
--- a/tests/test_cli.py
+++ b/tests/test_cli.py
@@ -199,6 +199,14 @@ def test_gpkg_bbox(script_runner):
     assert "4326" in result
 
 
+def test_gpkg_tbox(script_runner):
+    ret = script_runner.run('geoextent', '-t', 'tests/testdata/geopackage/wandelroute_maastricht.gpkg')
+    result = ret.stdout
+    assert ret.success, "process should return success"
+    assert ret.stderr == '', "stderr should be empty"
+    assert "['2021-01-05', '2021-01-05']" in result
+
+
 def test_csv_bbox(script_runner):
     ret = script_runner.run('geoextent', '-b', 'tests/testdata/csv/cities_NL.csv')
     assert ret.success, "process should return success"
diff --git a/tests/testdata/data-sources.md b/tests/testdata/data-sources.md
index f14e005..0d4f88b 100644
--- a/tests/testdata/data-sources.md
+++ b/tests/testdata/data-sources.md
@@ -19,7 +19,8 @@
 | [Carto BCN / martgnz]         | Barcelona districts                          | geojson   | CC-BY 4.0                              |
 | [Google]         | abstractviews_timeprimitive_example                         | kml   | CC-BY 4.0                              |
 | [Tkrajina]        | gpx1.1_with_all_fields.gpx                         | gpx   | Apache License 2.0                             |
-
+| [geoextent]        | ifgi_to_denkpause.sph                        | shp   | PDDL    |
+| [geoextent]        | wandelroute_maastricht.gpkg                        | gpkg   | PDDL    |
 
 [sf]: https://github.com/r-spatial/sf
 [geoextent]: https://github.com/o2r-project/geoextent
diff --git a/tests/testdata/geopackage/wandelroute_maastricht.gpkg b/tests/testdata/geopackage/wandelroute_maastricht.gpkg
new file mode 100644
index 0000000..df15449
Binary files /dev/null and b/tests/testdata/geopackage/wandelroute_maastricht.gpkg differ