995 catch userwarning in test interp uds to plipoints (#996)

* added warnings filter

tests/test_interpolate_grid2bnd.py

@@ -26,6 +26,7 @@
 from dfm_tools.hydrolib_helpers import get_ncbnd_construct
 import hydrolib.core.dflowfm as hcdfm
 from dfm_tools.errors import OutOfRangeError
+import warnings
 
 
 def data_dcsm_gdf():
@@ -547,7 +548,9 @@ def test_interp_uds_to_plipoints():
     ds_atdepths = ds_atdepths.rename({'depth_from_z0':'depth'})
 
     #interpolate to plipoints
-    ds_plipoints = dfmt.interp_uds_to_plipoints(uds=ds_atdepths, gdf=gdf) #workaround for plipoints out of the model domain
+    with warnings.catch_warnings():
+        warnings.simplefilter("ignore", UserWarning)
+        ds_plipoints = dfmt.interp_uds_to_plipoints(uds=ds_atdepths, gdf=gdf) #workaround for plipoints out of the model domain
     assert varn_pointname in ds_plipoints.coords
     assert 'depth' in ds_plipoints.coords # TODO: maybe should be z like ncbnd_construct['varn_depth'], although get_Dataset_atdepths() makes depth variable