Emily Boudreaux
cb20faeb3d
The test suite is extensive. Note that LLMs were used to aid in the development of the test suite. All LLM generated code was manually reviewed.
37 lines
1.8 KiB
C++
37 lines
1.8 KiB
C++
#include <catch2/catch_test_macros.hpp>
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#include "serif/tests/equations/fixture.hpp"
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#include "serif/tests/test_tags.hpp"
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namespace serif::tests::equations {
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TEST_CASE("Equation Closure Geometry Has The Analytic Dilation Factor", tags::unit & tags::equations) {
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Fixture f;
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const auto rho = constant(f.density_binding.size(), 0.55), h = constant(f.enthalpy_binding.size(), 0.9);
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const auto zero_rho = constant(rho.Size(), 0.0), zero_h = constant(h.Size(), 0.0), zero_u = f.displacement(0.0);
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constexpr double dilation = 0.2, direction_scale = 0.07;
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::mfem::VectorFunctionCoefficient coefficient(3, [](const ::mfem::Vector& x, ::mfem::Vector& u) {
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u = x;
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u *= dilation;
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});
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::mfem::GridFunction displacement(&f.displacement_space);
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displacement.ProjectCoefficient(coefficient);
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const auto u = f.displacement_binding.gather(displacement);
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auto du = u;
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du *= direction_scale / dilation;
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PreparedClosure prepared(
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Closure{eos::models::Polytrope{3.0, 1.5}}, f.density_binding, f.displacement_binding, f.compactification,
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f.mapper
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);
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::mfem::Vector identity, deformed, action;
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prepared.prepare(f.state(rho, h), zero_u, f.workspace);
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prepared.residual(f.workspace, identity);
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prepared.prepare(f.state(rho, h), u, f.workspace);
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prepared.residual(f.workspace, deformed);
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prepared.apply_jacobian(f.state(zero_rho, zero_h), du, f.workspace, action);
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identity *= std::pow(1.0 + dilation, 3.0);
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CHECK(relative_error(deformed, identity) < 5.0e-12);
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deformed *= 3.0 * direction_scale / (1.0 + dilation);
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CHECK(relative_error(action, deformed) < 5.0e-12);
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}
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} // namespace serif::tests::equations
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