diff --git a/.appveyor.yml b/.appveyor.yml
index b958416..0fbc9c4 100644
--- a/.appveyor.yml
+++ b/.appveyor.yml
@@ -8,12 +8,12 @@ environment:
 
 install:
     # windows config (for installation)
-    - cmd: "SET PATH=%PYTHON%;%PYTHON%\\Scripts;%PATH%"
+    - cmd: "%PYTHON%\\Scripts\\activate"
     - cmd: setlocal
     - cmd: set ANACONDA_API_TOKEN=
     # conda config
     - conda config --set always_yes yes --set changeps1 no
-    - conda update -q conda
+    - conda update -q conda tqdm
     - conda install conda-build anaconda-client
     - pip install -i https://pypi.anaconda.org/psyplot/simple --no-deps psyplot-ci-orb
     - conda config --add channels conda-forge
diff --git a/psy_maps/plotters.py b/psy_maps/plotters.py
index c6ab713..49de4c4 100755
--- a/psy_maps/plotters.py
+++ b/psy_maps/plotters.py
@@ -39,7 +39,6 @@
 from matplotlib.colors import BoundaryNorm
 import numpy as np
 from psyplot import rcParams
-from psyplot.compat.pycompat import map
 from psyplot.docstring import docstrings
 from psyplot.data import InteractiveList, _infer_interval_breaks
 from psyplot.plotter import (
diff --git a/tests/circumpolar_test.nc b/tests/circumpolar_test.nc
deleted file mode 100644
index a95942f..0000000
Binary files a/tests/circumpolar_test.nc and /dev/null differ
diff --git a/tests/test_plotters_combinedplotter_circumpolar.py b/tests/test_plotters_combinedplotter_circumpolar.py
deleted file mode 100755
index 32abb26..0000000
--- a/tests/test_plotters_combinedplotter_circumpolar.py
+++ /dev/null
@@ -1,197 +0,0 @@
-"""Test module of the :mod:`psyplot.plotter.maps` module"""
-
-# Disclaimer
-# ----------
-#
-# Copyright (C) 2021 Helmholtz-Zentrum Hereon
-# Copyright (C) 2020-2021 Helmholtz-Zentrum Geesthacht
-# Copyright (C) 2016-2021 University of Lausanne
-#
-# This file is part of psy-maps and is released under the GNU LGPL-3.O license.
-# See COPYING and COPYING.LESSER in the root of the repository for full
-# licensing details.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Lesser General Public License version 3.0 as
-# published by the Free Software Foundation.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU LGPL-3.0 license for more details.
-#
-# You should have received a copy of the GNU LGPL-3.0 license
-# along with this program.  If not, see <https://www.gnu.org/licenses/>.
-
-import os
-import unittest
-from itertools import starmap, repeat
-import numpy as np
-import cartopy.crs as ccrs
-from psy_maps.plotters import rcParams, InteractiveList
-import _base_testing as bt
-import test_plotters_combinedplotter as tpc
-
-
-class CircumpolarCombinedPlotterTest(tpc.CombinedPlotterTest):
-    """Test :class:`psyplot.plotter.maps.CombinedPlotter` class for circumpolar
-    grid"""
-
-    grid_type = 'circumpolar'
-
-    ncfile = os.path.join(bt.test_dir, 'circumpolar_test.nc')
-
-    @classmethod
-    def setUpClass(cls):
-        rcParams['plotter.maps.projection'] = 'northpole'
-        rcParams['plotter.maps.clat'] = 90
-        rcParams['plotter.vector.arrowsize'] = 200
-        rcParams['plotter.maps.lonlatbox'] = 'Europe'
-        super(CircumpolarCombinedPlotterTest, cls).setUpClass()
-
-    def ref_map_grid(self, close=True):
-        """Create reference file for xgrid formatoption.
-
-        Create reference file for
-        :attr:`~psyplot.plotter.maps.FieldPlotter.xgrid` (and others)
-        formatoption"""
-        sp = self.plot()
-        sp.update(xgrid=False, ygrid=False)
-        sp.export(os.path.join(bt.ref_dir, self.get_ref_file('grid1')))
-        sp.update(xgrid='rounded', ygrid=['data', 1000])
-        sp.export(os.path.join(bt.ref_dir, self.get_ref_file('grid2')))
-        sp.update(xgrid=True, ygrid=True, grid_color='w')
-        sp.export(os.path.join(bt.ref_dir, self.get_ref_file('grid3')))
-        sp.update(xgrid=True, ygrid=True, grid_color='k', grid_settings={
-            'linestyle': 'dotted'})
-        sp.export(os.path.join(bt.ref_dir, self.get_ref_file('grid4')))
-        if close:
-            sp.close(True, True, True)
-
-    def test_bounds(self):
-        """Test bounds formatoption"""
-        # test bounds of scalar field
-        self.assertEqual(
-            np.round(self.plotter.bounds.norm.boundaries, 2).tolist(),
-            np.round(np.linspace(250, 290, 11, endpoint=True), 2).tolist())
-        self.update(bounds='minmax')
-        bounds = [250.63, 254.38, 258.12, 261.87, 265.62, 269.36, 273.11,
-                  276.85, 280.6, 284.35, 288.09]
-        self.assertEqual(
-            np.round(self.plotter.bounds.norm.boundaries, 2).tolist(), bounds)
-        self.update(bounds=['rounded', 5, 5, 95])
-        self.assertEqual(
-            np.round(self.plotter.bounds.norm.boundaries, 2).tolist(),
-            np.linspace(255, 290, 5, endpoint=True).tolist())
-
-        # test vector bounds
-        self.update(color='absolute')
-        self.assertEqual(
-            np.round(self.plotter.vbounds.norm.boundaries, 2).tolist(),
-            np.linspace(0, 15, 11, endpoint=True).tolist())
-        self.update(vbounds='minmax')
-        bounds = [0.71, 1.74, 2.76, 3.79, 4.81, 5.84, 6.86, 7.89, 8.92, 9.94,
-                  10.97]
-        self.assertEqual(
-            np.round(self.plotter.vbounds.norm.boundaries, 2).tolist(), bounds)
-        self.update(vbounds=['rounded', 5, 5, 95])
-        self.assertEqual(
-            np.round(self.plotter.vbounds.norm.boundaries, 2).tolist(),
-            np.round(np.linspace(1.0, 9.5, 5, endpoint=True), 2).tolist())
-
-    @property
-    def _minmax_cticks(self):
-        if not self.vector_mode:
-            arr = self.plotter.plot_data[0].values
-            arr = arr[~np.isnan(arr)]
-            return np.round(
-                np.linspace(arr.min(), arr.max(), 11, endpoint=True),
-                decimals=2).tolist()
-        arr = self.plotter.plot_data[1].values
-        speed = (arr[0]**2 + arr[1]**2) ** 0.5
-        speed = speed[~np.isnan(speed)]
-        return np.round(
-            np.linspace(speed.min(), speed.max(), 11, endpoint=True),
-            decimals=2).tolist()
-
-    def test_grid(self, *args):
-        """Test xgrid, ygrid, grid_color, grid_labels, grid_settings fmts"""
-        self.update(xgrid=False, ygrid=False)
-        self.compare_figures(next(iter(args), self.get_ref_file('grid1')))
-        self.update(xgrid='rounded', ygrid=['data', 1000])
-        self.compare_figures(next(iter(args), self.get_ref_file('grid2')))
-        self.update(xgrid=True, ygrid=True, grid_color='w')
-        self.compare_figures(next(iter(args), self.get_ref_file('grid3')))
-        self.update(xgrid=True, ygrid=True, grid_color='k',
-                    grid_settings={'linestyle': 'dotted'})
-        self.compare_figures(next(iter(args), self.get_ref_file('grid4')))
-
-    def test_lonlatbox(self, *args):
-        """Test lonlatbox formatoption"""
-        def get_unmasked(coord):
-            """return the values of the coordinate that is not masked in the
-            data"""
-            arr = data if data.ndim == 2 else data[0]
-            return coord.values[~np.isnan(arr.values)]
-        self.update(lonlatbox='Europe|India', map_extent='data')
-        ax = self.plotter.ax
-        list(starmap(self.assertAlmostEqual, zip(
-            ax.get_extent(ccrs.PlateCarree()), (-55.6, 120.6,  -24.4, 85.9),
-            repeat(1), repeat("Failed to set the extent to Europe and India!"))
-            ))
-        # test whether latitudes and longitudes succeded
-        msg = "Failed to fit into lonlatbox limits for %s of %s."
-        if isinstance(self.plotter.plot_data, InteractiveList):
-            all_data = self.plotter.plot_data
-        else:
-            all_data = [self.plotter.plot_data]
-        for data in all_data:
-            self.assertGreaterEqual(get_unmasked(data.longitude).min(), -55.6,
-                                    msg=msg % ('longitude', 'minimum'))
-            self.assertLessEqual(get_unmasked(data.longitude).max(), 120.6,
-                                 msg=msg % ('longitude', 'maximum'))
-            self.assertGreaterEqual(get_unmasked(data.latitude).min(), -24.4,
-                                    msg=msg % ('latitude', 'minimum'))
-            self.assertLessEqual(get_unmasked(data.latitude).max(), 85.9,
-                                 msg=msg % ('latitude', 'maximum'))
-        self.compare_figures(next(iter(args), self.get_ref_file('lonlatbox')))
-
-    def test_map_extent(self, *args):
-        """Test map_extent formatoption"""
-        self.update(map_extent='Europe|India')
-        self.compare_figures(next(iter(args), self.get_ref_file('map_extent')))
-
-    @unittest.skip('Not implemented for circumpolar grids')
-    def ref_datagrid(self):
-        pass
-
-    @unittest.skip('Not implemented for circumpolar grids')
-    def test_datagrid(self):
-        pass
-
-    @unittest.skip('Not implemented for circumpolar grids')
-    def test_density(self):
-        pass
-
-    @unittest.skip('Not implemented for circumpolar grids')
-    def ref_density(self):
-        pass
-
-
-class CircumpolarCombinedPlotterTest2D(
-    bt.TestBase2D, CircumpolarCombinedPlotterTest
-):
-    """Test :class:`psyplot.plotter.maps.CombinedPlotter` class for icon grid
-    without time and vertical dimension"""
-
-    var = ['t2m', ['u_2d', 'v_2d']]
-
-    def _label_test(self, key, label_func, has_time=None):
-        if has_time is None:
-            has_time = not bool(self.vector_mode)
-        tpc.CombinedPlotterTest._label_test(
-            self, key, label_func, has_time=has_time)
-
-
-if __name__ == '__main__':
-    unittest.main()
diff --git a/tests/test_plotters_fieldplotter.py b/tests/test_plotters_fieldplotter.py
index f9b13b5..98d8887 100755
--- a/tests/test_plotters_fieldplotter.py
+++ b/tests/test_plotters_fieldplotter.py
@@ -28,6 +28,7 @@
 from itertools import starmap, repeat, chain
 import numpy as np
 import matplotlib.pyplot as plt
+import cartopy
 import cartopy.crs as ccrs
 import matplotlib.colors as mcol
 from psy_maps.plotters import FieldPlotter, rcParams, InteractiveList
@@ -220,7 +221,11 @@ def test_axiscolor(self):
 
     def test_background(self):
         self.update(background='0.5')
-        bc = mcol.to_rgba(self.plotter.ax.background_patch.get_facecolor())
+        if cartopy.__version__ < "0.18":
+            col = self.plotter.ax.background_patch.get_facecolor()
+        else:
+            col = self.plotter.ax.patch.get_facecolor()
+        bc = mcol.to_rgba(col)
         self.assertEqual(bc, (0.5, 0.5, 0.5, 1.0))
 
     def test_extend(self):
@@ -471,7 +476,7 @@ def test_lonlatbox_projected():
     )
     sp.update(lonlatbox=[17.8, 18.2, 59.2, 59.4])
     assert (
-        np.round(ax.get_extent(ccrs.PlateCarree()), 2).tolist()
+        np.round(ax.get_extent(ccrs.PlateCarree()), 1).tolist()
         == [17.8, 18.2, 59.2, 59.4]
     )
 
diff --git a/tests/test_plotters_fieldplotter_circumpolar.py b/tests/test_plotters_fieldplotter_circumpolar.py
deleted file mode 100755
index 8a41ad6..0000000
--- a/tests/test_plotters_fieldplotter_circumpolar.py
+++ /dev/null
@@ -1,147 +0,0 @@
-"""Test module of the :mod:`psyplot.plotter.maps` module"""
-
-# Disclaimer
-# ----------
-#
-# Copyright (C) 2021 Helmholtz-Zentrum Hereon
-# Copyright (C) 2020-2021 Helmholtz-Zentrum Geesthacht
-# Copyright (C) 2016-2021 University of Lausanne
-#
-# This file is part of psy-maps and is released under the GNU LGPL-3.O license.
-# See COPYING and COPYING.LESSER in the root of the repository for full
-# licensing details.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Lesser General Public License version 3.0 as
-# published by the Free Software Foundation.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU LGPL-3.0 license for more details.
-#
-# You should have received a copy of the GNU LGPL-3.0 license
-# along with this program.  If not, see <https://www.gnu.org/licenses/>.
-
-import os
-import unittest
-from itertools import starmap, repeat
-import numpy as np
-import cartopy.crs as ccrs
-from psy_maps.plotters import rcParams, InteractiveList
-import _base_testing as bt
-import test_plotters_fieldplotter as tpf
-
-
-class CircumpolarFieldPlotterTest(tpf.FieldPlotterTest):
-    """Test :class:`psyplot.plotter.maps.FieldPlotter` class for circumpolar
-    grid"""
-
-    grid_type = 'circumpolar'
-
-    ncfile = os.path.join(bt.test_dir, 'circumpolar_test.nc')
-
-    @classmethod
-    def setUpClass(cls):
-        rcParams['plotter.maps.projection'] = 'northpole'
-        rcParams['plotter.maps.clat'] = 90
-        super(CircumpolarFieldPlotterTest, cls).setUpClass()
-
-    def ref_map_grid(self, close=True):
-        """Create reference file for xgrid formatoption.
-
-        Create reference file for
-        :attr:`~psyplot.plotter.maps.FieldPlotter.xgrid` (and others)
-        formatoption"""
-        sp = self.plot(xgrid=False, ygrid=False)
-        sp.export(os.path.join(bt.ref_dir, self.get_ref_file('grid1')))
-        sp.update(xgrid='rounded', ygrid=['data', 1000])
-        sp.export(os.path.join(bt.ref_dir, self.get_ref_file('grid2')))
-        sp.update(xgrid=True, ygrid=True, grid_color='w')
-        sp.export(os.path.join(bt.ref_dir, self.get_ref_file('grid3')))
-        sp.update(xgrid=True, ygrid=True, grid_color='k', grid_settings={
-            'linestyle': 'dotted'})
-        sp.export(os.path.join(bt.ref_dir, self.get_ref_file('grid4')))
-        if close:
-            sp.close(True, True, True)
-
-    def test_bounds(self):
-        """Test bounds formatoption"""
-        self.assertEqual(
-            np.round(self.plotter.bounds.norm.boundaries, 2).tolist(),
-            np.linspace(240, 310, 11, endpoint=True).tolist())
-        self.update(bounds='minmax')
-        bounds = [241.29, 247.68, 254.07, 260.47, 266.86, 273.25, 279.64,
-                  286.03, 292.43, 298.82, 305.21]
-        self.assertEqual(
-            np.round(self.plotter.bounds.norm.boundaries, 2).tolist(), bounds)
-        self.update(bounds=['rounded', 5, 5, 95])
-        self.assertEqual(
-            np.round(self.plotter.bounds.norm.boundaries, 2).tolist(),
-            np.linspace(250, 300, 5, endpoint=True).tolist())
-
-    def test_grid(self, *args):
-        """Test xgrid, ygrid, grid_color, grid_labels, grid_settings fmts"""
-        self.update(xgrid=False, ygrid=False)
-        self.compare_figures(next(iter(args), self.get_ref_file('grid1')))
-        self.update(xgrid='rounded', ygrid=['data', 1000])
-        self.compare_figures(next(iter(args), self.get_ref_file('grid2')))
-        self.update(xgrid=True, ygrid=True, grid_color='w')
-        self.compare_figures(next(iter(args), self.get_ref_file('grid3')))
-        self.update(xgrid=True, ygrid=True, grid_color='k',
-                    grid_settings={'linestyle': 'dotted'})
-        self.compare_figures(next(iter(args), self.get_ref_file('grid4')))
-
-    def test_lonlatbox(self, *args):
-        """Test lonlatbox formatoption"""
-        def get_unmasked(coord):
-            """return the values of the coordinate that is not masked in the
-            data"""
-            return coord.values[~np.isnan(data.values)]
-        self.update(lonlatbox='Europe|India', map_extent='data')
-        ax = self.plotter.ax
-        list(starmap(self.assertAlmostEqual, zip(
-            ax.get_extent(ccrs.PlateCarree()), (-55.6, 120.6,  -24.4, 85.9),
-            repeat(1), repeat("Failed to set the extent to Europe and India!"))
-            ))
-        # test whether latitudes and longitudes succeded
-        msg = "Failed to fit into lonlatbox limits for %s of %s."
-        if isinstance(self.plotter.plot_data, InteractiveList):
-            all_data = self.plotter.plot_data
-        else:
-            all_data = [self.plotter.plot_data]
-        for data in all_data:
-            self.assertGreaterEqual(get_unmasked(data.longitude).min(), -55.6,
-                                    msg=msg % ('longitude', 'minimum'))
-            self.assertLessEqual(get_unmasked(data.longitude).max(), 120.6,
-                                 msg=msg % ('longitude', 'maximum'))
-            self.assertGreaterEqual(get_unmasked(data.latitude).min(), -24.4,
-                                    msg=msg % ('latitude', 'minimum'))
-            self.assertLessEqual(get_unmasked(data.latitude).max(), 85.9,
-                                 msg=msg % ('latitude', 'maximum'))
-        self.compare_figures(next(iter(args), self.get_ref_file('lonlatbox')))
-
-    def test_map_extent(self, *args):
-        """Test map_extent formatoption"""
-        self.update(map_extent='Europe|India')
-        self.compare_figures(next(iter(args), self.get_ref_file('map_extent')))
-
-    @unittest.skip('Not implemented for circumpolar grids')
-    def ref_datagrid(self):
-        pass
-
-    @unittest.skip('Not implemented for circumpolar grids')
-    def test_datagrid(self):
-        pass
-
-
-class CircumpolarFieldPlotterTest2D(
-        bt.TestBase2D, CircumpolarFieldPlotterTest):
-    """Test :class:`psyplot.plotter.maps.FieldPlotter` class without time and
-    vertical dimension for circumpolar grids"""
-
-    var = 't2m_2d'
-
-
-if __name__ == '__main__':
-    unittest.main()
diff --git a/tests/test_plotters_vectorplotter_circumpolar.py b/tests/test_plotters_vectorplotter_circumpolar.py
deleted file mode 100755
index 67cbae6..0000000
--- a/tests/test_plotters_vectorplotter_circumpolar.py
+++ /dev/null
@@ -1,161 +0,0 @@
-"""Test module of the :mod:`psyplot.plotter.maps` module"""
-
-# Disclaimer
-# ----------
-#
-# Copyright (C) 2021 Helmholtz-Zentrum Hereon
-# Copyright (C) 2020-2021 Helmholtz-Zentrum Geesthacht
-# Copyright (C) 2016-2021 University of Lausanne
-#
-# This file is part of psy-maps and is released under the GNU LGPL-3.O license.
-# See COPYING and COPYING.LESSER in the root of the repository for full
-# licensing details.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Lesser General Public License version 3.0 as
-# published by the Free Software Foundation.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU LGPL-3.0 license for more details.
-#
-# You should have received a copy of the GNU LGPL-3.0 license
-# along with this program.  If not, see <https://www.gnu.org/licenses/>.
-
-import os
-import unittest
-from itertools import starmap, repeat
-import numpy as np
-import cartopy.crs as ccrs
-from psy_maps.plotters import rcParams, InteractiveList
-import _base_testing as bt
-import test_plotters_vectorplotter as tpv
-
-
-class CircumpolarVectorPlotterTest(tpv.VectorPlotterTest):
-    """Test :class:`psyplot.plotter.maps.VectorPlotter` class for circumpolar
-    grid"""
-
-    grid_type = 'circumpolar'
-
-    ncfile = os.path.join(bt.test_dir, 'circumpolar_test.nc')
-
-    @classmethod
-    def setUpClass(cls):
-        rcParams['plotter.maps.projection'] = 'northpole'
-        rcParams['plotter.maps.clat'] = 90
-        rcParams['plotter.vector.arrowsize'] = 200
-        rcParams['plotter.maps.lonlatbox'] = 'Europe'
-        rcParams['plotter.maps.xgrid'] = False
-        rcParams['plotter.maps.ygrid'] = False
-        super(CircumpolarVectorPlotterTest, cls).setUpClass()
-
-    def ref_map_grid(self, close=True):
-        """Create reference file for xgrid formatoption.
-
-        Create reference file for
-        :attr:`~psyplot.plotter.maps.FieldPlotter.xgrid` (and others)
-        formatoption"""
-        sp = self.plot()
-        sp.update(xgrid=False, ygrid=False)
-        sp.export(os.path.join(bt.ref_dir, self.get_ref_file('grid1')))
-        sp.update(xgrid='rounded', ygrid=['data', 1000])
-        sp.export(os.path.join(bt.ref_dir, self.get_ref_file('grid2')))
-        sp.update(xgrid=True, ygrid=True, grid_color='w')
-        sp.export(os.path.join(bt.ref_dir, self.get_ref_file('grid3')))
-        sp.update(xgrid=True, ygrid=True, grid_color='k', grid_settings={
-            'linestyle': 'dotted'})
-        sp.export(os.path.join(bt.ref_dir, self.get_ref_file('grid4')))
-        if close:
-            sp.close(True, True, True)
-
-    def test_bounds(self):
-        """Test bounds formatoption"""
-        self.update(color='absolute')
-        self.assertEqual(
-            np.round(self.plotter.bounds.norm.boundaries, 2).tolist(),
-            np.linspace(0, 15, 11, endpoint=True).tolist())
-        self.update(bounds='minmax')
-        bounds = [0.71, 1.74, 2.76, 3.79, 4.81, 5.84, 6.86, 7.89, 8.92, 9.94,
-                  10.97]
-        self.assertEqual(
-            np.round(self.plotter.bounds.norm.boundaries, 2).tolist(), bounds)
-        self.update(bounds=['rounded', 5, 5, 95])
-        self.assertEqual(
-            np.round(self.plotter.bounds.norm.boundaries, 2).tolist(),
-            np.round(np.linspace(1.0, 9.5, 5, endpoint=True), 2).tolist())
-
-    def test_grid(self, *args):
-        """Test xgrid, ygrid, grid_color, grid_labels, grid_settings fmts"""
-        self.update(xgrid=False, ygrid=False)
-        self.compare_figures(next(iter(args), self.get_ref_file('grid1')))
-        self.update(xgrid='rounded', ygrid=['data', 1000])
-        self.compare_figures(next(iter(args), self.get_ref_file('grid2')))
-        self.update(xgrid=True, ygrid=True, grid_color='w')
-        self.compare_figures(next(iter(args), self.get_ref_file('grid3')))
-        self.update(xgrid=True, ygrid=True, grid_color='k',
-                    grid_settings={'linestyle': 'dotted'})
-        self.compare_figures(next(iter(args), self.get_ref_file('grid4')))
-
-    def test_lonlatbox(self, *args):
-        """Test lonlatbox formatoption"""
-        def get_unmasked(coord):
-            """return the values of the coordinate that is not masked in the
-            data"""
-            return coord.values[~np.isnan(data[0].values)]
-        self.update(lonlatbox='Europe|India', map_extent='data')
-        ax = self.plotter.ax
-        list(starmap(self.assertAlmostEqual, zip(
-            ax.get_extent(ccrs.PlateCarree()), (-55.6, 120.6,  -24.4, 85.9),
-            repeat(1), repeat("Failed to set the extent to Europe and India!"))
-            ))
-        # test whether latitudes and longitudes succeded
-        msg = "Failed to fit into lonlatbox limits for %s of %s."
-        if isinstance(self.plotter.plot_data, InteractiveList):
-            all_data = self.plotter.plot_data
-        else:
-            all_data = [self.plotter.plot_data]
-        for data in all_data:
-            self.assertGreaterEqual(get_unmasked(data.longitude).min(), -55.6,
-                                    msg=msg % ('longitude', 'minimum'))
-            self.assertLessEqual(get_unmasked(data.longitude).max(), 120.6,
-                                 msg=msg % ('longitude', 'maximum'))
-            self.assertGreaterEqual(get_unmasked(data.latitude).min(), -24.4,
-                                    msg=msg % ('latitude', 'minimum'))
-            self.assertLessEqual(get_unmasked(data.latitude).max(), 85.9,
-                                 msg=msg % ('latitude', 'maximum'))
-        self.compare_figures(next(iter(args), self.get_ref_file('lonlatbox')))
-
-    def test_map_extent(self, *args):
-        """Test map_extent formatoption"""
-        self.update(map_extent='Europe|India')
-        self.compare_figures(next(iter(args), self.get_ref_file('map_extent')))
-
-    @unittest.skip('Not implemented for circumpolar grids')
-    def ref_datagrid(self):
-        pass
-
-    @unittest.skip('Not implemented for circumpolar grids')
-    def test_datagrid(self):
-        pass
-
-    @unittest.skip('Not implemented for circumpolar grids')
-    def test_density(self):
-        pass
-
-    @unittest.skip('Not implemented for circumpolar grids')
-    def ref_density(self):
-        pass
-
-
-class CircumpolarVectorPlotterTest2D(
-        bt.TestBase2D, CircumpolarVectorPlotterTest):
-    """Test :class:`psyplot.plotter.maps.VectorPlotter` class without time and
-    vertical dimension for circumpolar grids"""
-
-    var = ['u_2d', 'v_2d']
-
-
-if __name__ == '__main__':
-    unittest.main()