Implement testing philosophy (see docs/TESTING_PHILOSOPHY.md):
New test structure:
- test/tutorials/ - Educational tests (generate documentation)
- test/unit/ - Fast focused tests
- test/verification/ - Known analytical solutions
- test/runtests_new.jl - New test runner with env var control
First tutorial: Creating Elements and Fields
- Teaches node/element creation
- Explains field concept (geometry, materials, loads)
- 5 tests, all passing ✅
Test runner features:
- JULIAFEM_TEST_TUTORIALS=true/false (default: true)
- JULIAFEM_TEST_UNIT=true/false (default: false)
- JULIAFEM_TEST_OLD=true/false (default: false)
- Clear output with test categories
- Preserved old test suite as runtests.jl.old
Results: 5/5 tests passing in <2 seconds
Next: Write 2-3 more fundamental tutorials (mesh reading, 1D elasticity)
Jukka Aho
61218f8fd3