Add jet, surface and fixed-patch tests and runnable examples

tests/integration/test_sync_bodies_skeleton.py

@@ -9,9 +9,9 @@ import json
 
 import numpy as np
 import pycuda.driver as cuda
-import pycuda.autoinit
 
 from CelerisLab.simulation import Simulation, _scatter_to_field, _gather_from_field
+from ._cases import make_sim
 
 
 # Use a small grid for fast compilation and test execution
@@ -23,7 +23,7 @@ class TestSyncBodiesSkeleton(unittest.TestCase):
 
     def _make_sim(self) -> Simulation:
         """Create a Simulation with a small double_buffer D2Q9 grid."""
-        return Simulation(device_id=0)
+        return make_sim()
 
     def test_remove_body_sync_and_run(self):
         """Remove a body, sync, and continue running without crash."""
@@ -134,28 +134,7 @@ class TestSyncBodiesEsoPull(unittest.TestCase):
 
     def _make_esopull_sim(self, nx=128, ny=64) -> Simulation:
         """Create a Simulation with a small esopull D2Q9 grid."""
-        cfg = {
-            "grid": {"lattice_model": "D2Q9", "nx": nx, "ny": ny, "nz": 1},
-                "physics": {"data_type": "FP32", "viscosity": 0.05,
-                            "velocity": 0.03, "rho": 1.0},
-            "method": {
-                "collision": "SRT", "streaming": "esopull",
-                "store_precision": "FP32", "ddf_shifting": False,
-                "les": {"enabled": False, "cs": 0.16, "closed_form": True},
-                "trt": {"magic_param": 0.1875},
-                "inlet": {"profile": "parabolic", "scheme": "zou_he_local"},
-                "outlet": {"mode": "neq_extrap", "backflow_clamp": True,
-                           "blend_alpha": 0.7},
-                "y_wall_bc": "bounce_back",
-                "omega_guard": {"min": 0.01, "max": 1.99},
-            },
-            "cuda": {"threads_per_block": 256, "compute_capability": "auto"},
-        }
-        tmpd = tempfile.mkdtemp(prefix="esopull_sync_")
-        lbm_path = os.path.join(tmpd, "config_lbm.json")
-        with open(lbm_path, "w") as f:
-            json.dump(cfg, f)
-        return Simulation(lbm_config_path=lbm_path)
+        return make_sim(nx=nx, ny=ny, streaming="esopull")
 
     def test_esopull_add_body(self):
         """EsoPull: add body, sync, run, read finite force."""
@@ -234,7 +213,8 @@ class TestSyncBodiesEsoPull(unittest.TestCase):
         _gather_from_field(sim.field, s_host, all_cells)
         sim.field.esopull_sync_encode(
             s_gpu, s_host, idx_gpu, len(all_cells), step, stream)
-        stream.synchronize()
+        with sim.ctx.activate():
+            stream.synchronize()
 
         sim.run(100)
         macro = sim.get_macroscopic()