Fix deprecation warnings

tests/filters_test.py

@@ -809,7 +809,6 @@ def test_conversion(self):
             wpdi = dsa.WrapDataObject(converted)
             points = np.array(wpdi.Points)
             self.assertTrue(np.allclose(points, data[['x_utm', 'y_utm', 'altitude']]))
-            return True
 
 
 ###############################################################################
@@ -910,7 +909,6 @@ def test(self):
         data = PVGeo.model_build.CreateTensorMesh().apply()
         thresh = PercentThreshold(percent=75).apply(data, 'Random Data')
         self.assertTrue(isinstance(thresh, vtk.vtkUnstructuredGrid))
-        return True
 
 
 ###############################################################################
@@ -938,7 +936,6 @@ def test(self):
         # Make sure there is a new 'Colors' Array
         arr = colored.GetPointData().GetArray('Colors')
         self.assertTrue(isinstance(arr, vtk.vtkUnsignedCharArray))
-        return True
 
 
 ###############################################################################
@@ -962,7 +959,6 @@ def test(self):
         mesh = BuildSurfaceFromPoints(zcoords=z_range).apply(poly)
         assert isinstance(mesh, pyvista.StructuredGrid)
         assert mesh.dimensions == (len(z_range), len(points), 1)
-        return True
 
 
 ###############################################################################

tests/gslib_test.py

@@ -210,7 +210,7 @@ def test_writer(self):
             self.assertTrue(np.allclose(wtbl.CellData[i], wrd.CellData[i]))
 
     def test_sgems_grid_writer_no_data(self):
-        grid = pyvista.ImageData((10, 10, 10), (2, 2, 2))
+        grid = pyvista.ImageData(dimensions=(10, 10, 10), spacing=(2, 2, 2))
         writer = WriteImageDataToSGeMS()
         filename = os.path.join(self.test_dir, 'test-writer-no-data.dat')
         writer.SetFileName(filename)