New 312-line test file for single-element patch test:
- Tests core assembly infrastructure with single Tet10 element
- Validates material model (LinearElastic) stress computation
- Tests strain computation from displacement gradients
- Validates zero-allocation in assembly helpers
- Tests type stability with @inferred checks
- Validates stiffness matrix symmetry and positive definiteness
- Tests uniaxial tension case with known analytical solution
Fundamental validation test isolating assembly implementation
from mesh complexities and solver issues.
New 234-line test file for interpolate_fields functions:
- Tests single-field scalar interpolation (Temperature)
- Tests single-field vector interpolation (Displacement 2D/3D)
- Tests multi-field interpolation (Temperature + Displacement)
- Tests field value and gradient extraction
- Tests individual field extraction (interpolate_field)
- Tests value-only extraction (interpolate_field_value)
- Validates zero-allocation for all interpolation functions
- Tests NamedTuple return types with proper field structure
Comprehensive test ensuring field interpolation works correctly
for all field types and maintains zero-allocation performance.
New 218-line test file for extract_element_dofs functions:
- Tests single-field scalar extraction (Temperature)
- Tests single-field vector extraction (Displacement 2D/3D)
- Tests multi-field extraction (Temperature + Displacement)
- Tests non-contiguous DOF indices
- Tests both flat and structured extraction variants
- Validates zero-allocation for all extraction functions
- Tests NamedTuple return types with proper field names
Comprehensive test ensuring DOF extraction works correctly for
all field types and maintains zero-allocation performance.
New 425-line test file for Element construction API:
- Tests separation of concerns: Topology + Basis + Integration + Fields
- Tests 2D/3D elements: Triangles, Tetrahedra, Quadrilaterals, Hexahedra
- Tests P1 and P2 variants with correct node counts
- Validates backward compatibility aliases (Tet4, Tri3, Quad4, Hex8)
- Tests topology properties independent of basis degree
- Tests type-stable NamedTuple fields (100× faster than Dict)
- Tests integration point storage in elements
- Validates zero-allocation element access
Comprehensive test demonstrating new Element API architecture with
proper separation of concerns and type stability.
New 285-line test file verifying CElement uses real Lagrange basis:
- Tests Tri3 and Tet4 linear interpolation (exact at nodes)
- Tests gradient computation for scalar and vector DOFs
- Validates partition of unity property (sum of basis = 1)
- Tests linear reproduction (linear functions reproduced exactly)
- Tests deformation gradient for VectorDOF{2}
- Verifies basis functions from basis_generated.jl, not stubs
Ensures CElement correctly uses actual Lagrange basis functions
with proper mathematical properties.
Jukka Aho