Increasing RK45_tol to speed up tests

For some reason RK45 was set so strict that it reduced dt to 1 second, severely slowing down the tests

Author: erikvansebille

tests/v4/test_advection.py

@@ -227,11 +227,7 @@ def test_radialrotation(npart=10):
         ("AdvDiffM1", 1e-2),
         ("RK4", 1e-5),
         ("RK4_3D", 1e-5),
-        pytest.param(
-            "RK45",
-            1e-5,
-            marks=pytest.mark.skip(reason="https://github.com/OceanParcels/Parcels/pull/2134#issuecomment-3160726036"),
-        ),
+        ("RK45", 1e-5),
     ],
 )
 def test_moving_eddy(method, rtol):
@@ -260,7 +256,7 @@ def test_moving_eddy(method, rtol):
     if method == "RK45":
         # Use RK45Particles to set next_dt
         RK45Particles = Particle.add_variable(Variable("next_dt", initial=dt, dtype="timedelta64[s]"))
-        fieldset.add_constant("RK45_tol", 1e-6)
+        fieldset.add_constant("RK45_tol", 1e-3)
 
     pclass = RK45Particles if method == "RK45" else Particle
     pset = ParticleSet(
@@ -286,11 +282,7 @@ def truth_moving(x_0, y_0, t):
     [
         ("EE", 1e-2),
         ("RK4", 1e-5),
-        pytest.param(
-            "RK45",
-            1e-5,
-            marks=pytest.mark.skip(reason="https://github.com/OceanParcels/Parcels/pull/2134#issuecomment-3160726036"),
-        ),
+        ("RK45", 1e-3),
     ],
 )
 def test_decaying_moving_eddy(method, rtol):
@@ -307,7 +299,7 @@ def test_decaying_moving_eddy(method, rtol):
     if method == "RK45":
         # Use RK45Particles to set next_dt
         RK45Particles = Particle.add_variable(Variable("next_dt", initial=dt, dtype="timedelta64[s]"))
-        fieldset.add_constant("RK45_tol", 1e-6)
+        fieldset.add_constant("RK45_tol", 1e-3)
 
     pclass = RK45Particles if method == "RK45" else Particle
 
@@ -338,11 +330,7 @@ def truth_moving(x_0, y_0, t):
     "method, atol",
     [
         ("RK4", 1),
-        pytest.param(
-            "RK45",
-            1,
-            marks=pytest.mark.skip(reason="https://github.com/OceanParcels/Parcels/pull/2134#issuecomment-3160726036"),
-        ),
+        ("RK45", 1),
     ],
 )
 @pytest.mark.parametrize("grid_type", ["A"])  # TODO also implement C-grid once available
@@ -377,7 +365,7 @@ def test_gyre_flowfields(method, grid_type, atol, flowfield):
                 Variable("next_dt", initial=dt, dtype="timedelta64[s]"),
             ]
         )
-        fieldset.add_constant("RK45_tol", 1e-6)
+        fieldset.add_constant("RK45_tol", 1e-3)
     else:
         SampleParticle = Particle.add_variable(
             [Variable("p", initial=0.0, dtype=np.float32), Variable("p_start", initial=0.0, dtype=np.float32)]