Misc Software Design Description

[./test]
  type = 'Exodiff'
  input = 'coupled_directional_mesh_height_interpolation.i'
  exodiff = 'coupled_directional_mesh_height_interpolation_out.e'
  requirement = 'The system shall compute an aux variable that couples to some other value and modulates it by the mesh height in a direction.'
[../]

[./test]
  type = Exodiff
  input = single.i
  exodiff = 'single_out.e'
  allow_test_objects = true
  abs_zero = 1E-6
  requirement = 'MOOSE shall be able to simulate convective flow through lower-dimensional fractures embedded in a higher-dimensional solid'
  design = 'misc/index.md'
  issues = '#13318'
[../]

[./thermo_diffusion]
  type = 'Exodiff'
  input = 'thermo_diffusion.i'
  exodiff = 'thermo_diffusion_out.e'
  abs_zero = 1e-8
  requirement = 'Thermo diffusion shall reproduce an analytical solution'
  design = "ThermoDiffusion.md"
  issues = "#3392"
[../]

[./ad_thermo_diffusion]
  type = 'Exodiff'
  input = 'ad_thermo_diffusion.i'
  exodiff = 'ad_thermo_diffusion_out.e'
  abs_zero = 1e-8
  requirement = 'AD thermo diffusion shall reproduce an analytical solution'
  design = "ADThermoDiffusion.md"
  issues = "#12633"
  allow_test_objects = true
[../]

[./ad_thermo_diffusion_jacobian]
  type = 'PetscJacobianTester'
  input = 'ad_thermo_diffusion.i'
  ratio_tol = 1e-7
  difference_tol = 1e-3
  run_sim = True
  requirement = 'AD thermo diffusion shall work with material properties and the Jacobian shall be beautiful'
  design = "ADThermoDiffusion.md"
  issues = "#5658"
  allow_test_objects = true
[../]