From b5f5f1f625b2b1b16298bba0e633a07d82327f03 Mon Sep 17 00:00:00 2001
From: Thomas Gibson <gibsonthomas1120@hotmail.com>
Date: Thu, 3 Jun 2021 21:05:20 -0500
Subject: [PATCH] Test geometric factors
---
test/test_dt_utils.py | 87 +++++++++++++++++++++++++++++++++++++++++++
1 file changed, 87 insertions(+)
create mode 100644 test/test_dt_utils.py
diff --git a/test/test_dt_utils.py b/test/test_dt_utils.py
new file mode 100644
index 00000000..124ba598
--- /dev/null
+++ b/test/test_dt_utils.py
@@ -0,0 +1,87 @@
+__copyright__ = """
+Copyright (C) 2021 University of Illinois Board of Trustees
+"""
+
+__license__ = """
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
+"""
+
+import numpy as np
+
+from arraycontext import ( # noqa
+ pytest_generate_tests_for_pyopencl_array_context
+ as pytest_generate_tests
+)
+
+from grudge import DiscretizationCollection
+
+import grudge.op as op
+
+import pytest
+
+import logging
+
+
+logger = logging.getLogger(__name__)
+
+
+@pytest.mark.parametrize("name", ["interval", "box2d", "box3d"])
+def test_geometric_factors_regular_refinement(actx_factory, name):
+ from grudge.dt_utils import dt_geometric_factors
+
+ actx = actx_factory()
+
+ # {{{ cases
+
+ if name == "interval":
+ from mesh_data import BoxMeshBuilder
+ builder = BoxMeshBuilder(ambient_dim=1)
+ elif name == "box2d":
+ from mesh_data import BoxMeshBuilder
+ builder = BoxMeshBuilder(ambient_dim=2)
+ elif name == "box3d":
+ from mesh_data import BoxMeshBuilder
+ builder = BoxMeshBuilder(ambient_dim=3)
+ else:
+ raise ValueError("unknown geometry name: %s" % name)
+
+ # }}}
+
+ min_factors = []
+ for resolution in builder.resolutions:
+ mesh = builder.get_mesh(resolution, builder.mesh_order)
+ dcoll = DiscretizationCollection(actx, mesh, order=builder.order)
+ min_factors.append(op.nodal_min(dcoll, "vol", dt_geometric_factors(dcoll)))
+
+ # Resolution is doubled each refinement, so the ratio of consecutive
+ # geometric factors should satisfy: gfi+1 / gfi = 2
+ min_factors = np.asarray(min_factors)
+ ratios = min_factors[:-1] / min_factors[1:]
+ assert np.all(np.isclose(ratios, 2))
+
+
+# You can test individual routines by typing
+# $ python test_grudge.py 'test_routine()'
+
+if __name__ == "__main__":
+ import sys
+ if len(sys.argv) > 1:
+ exec(sys.argv[1])
+ else:
+ pytest.main([__file__])
--
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