Adding test for creating particles outside time

Author: erikvansebille

tests/v4/test_particleset.py

@@ -3,13 +3,15 @@
 
 import numpy as np
 import pytest
+import xarray as xr
 
 from parcels import (
     AdvectionEE,
     Field,
     FieldSet,
     Particle,
     ParticleSet,
+    ParticleSetWarning,
     StatusCode,
     UXPiecewiseConstantFace,
     VectorField,
@@ -79,6 +81,12 @@ def test_particleset_init_time_type(fieldset, time, expectation):
         ParticleSet(fieldset, lon=[0.2], lat=[5.0], time=[time], pclass=Particle)
 
 
+def test_pset_create_outside_time(fieldset):
+    time = xr.date_range("1999", "2001", 20)
+    with pytest.warns(ParticleSetWarning, match="Some particles are set to be released*"):
+        ParticleSet(fieldset, pclass=Particle, lon=[0] * len(time), lat=[0] * len(time), time=time)
+
+
 @pytest.mark.parametrize(
     "dt, expectation",
     [