Phase Field Software Design Description

[./simple_transient_diffusion_with_soret]
  type = 'Exodiff'
  input = 'simple_transient_diffusion_with_soret.i'
  exodiff = 'simple_transient_diffusion_with_soret_out.e'
  requirement = 'A temperature gradient driving force for diffusion shall be added to the split form of the Cahn-Hilliard equation and solved using automatic differentiation.'
[../]

[./simple_transient_diffusion_with_soret-jac]
  type = 'PetscJacobianTester'
  input = 'simple_transient_diffusion_with_soret.i'
  run_sim = true
  difference_tol = 1e-7
  cli_args = 'Outputs/exodus=false'
  allow_test_objects = true
  requirement = 'The Jacobians for the automatic differentiation ADCHSplitChemicalPotential and ADCHSplitConcentration kernels shall be accurate.'
[../]

[./simple_transient_diffusion]
  type = 'Exodiff'
  input = 'simple_transient_diffusion.i'
  exodiff = 'simple_transient_diffusion_out.e'
  requirement = 'ADCHSplitChemicalPotential and ADCHSplitConcentration shall solve a simple Cahn-Hilliard problem using automatic differentiation.'
[../]

[./simple_transient_diffusion-jac]
  type = 'PetscJacobianTester'
  input = 'simple_transient_diffusion.i'
  run_sim = true
  difference_tol = 1e-7
  cli_args = 'Outputs/exodus=false'
  allow_test_objects = true
  requirement = 'The Jacobians for the automatic differentiation ADCHSplitChemicalPotential and ADCHSplitConcentration kernels shall be accurate.'
[../]

[./simple_transient_diffusion]
  type = 'Exodiff'
  input = 'simple_transient_diffusion.i'
  exodiff = 'simple_transient_diffusion_out.e'
  requirement = 'ADCHSplitChemicalPotential and ADCHSplitConcentration shall solve a simple Cahn-Hilliard problem using automatic differentiation.'
[../]

[./simple_transient_diffusion-jac]
  type = 'PetscJacobianTester'
  input = 'simple_transient_diffusion.i'
  run_sim = true
  difference_tol = 1e-7
  cli_args = 'Outputs/exodus=false'
  allow_test_objects = true
  requirement = 'The Jacobians for the automatic differentiation ADCHSplitChemicalPotential and ADCHSplitConcentration kernels shall be accurate.'
[../]

[./test1]
  type = 'Exodiff'
  input = 'test1.i'
  exodiff = 'test1_out.e'
  issues = '#4580'
  design = 'GBAnisotropy.md'
  requirement = 'A material shall be provided to compute anisotropic grain boundary energies and mobilities.'
[../]

[./test2]
  type = 'Exodiff'
  input = 'test2.i'
  exodiff = 'test2_out.e'
  issues = '#4580'
  design = 'GBAnisotropy.md'
  requirement = 'A material shall be provided to compute anisotropic grain boundary energies and mobilities.'
[../]

[./test3]
  type = 'Exodiff'
  input = 'test3.i'
  exodiff = 'test3_out.e'
  issues = '#4580'
  design = 'GBAnisotropy.md'
  requirement = 'A material shall be provided to compute anisotropic grain boundary energies and mobilities with an inclination dependence.'
[../]

[./testwidth1]
  type = 'Exodiff'
  input = 'testwidth1.i'
  exodiff = 'testwidth1_out.e'
  issues = '#8079'
  design = 'GBWidthAnisotropy.md'
  requirement = 'The anisotropic grain boundary system shall allow the user to specify grain boundary widths independently for each interface between grains.'
[../]

[./GrainBoundaryVelocityTest]
  type = 'Exodiff'
  input = 'GrainBoundaryVelocityTest.i'
  exodiff = 'GrainBoundaryVelocityTest_out.e'

  issues = '#14887'
  design = 'GrainBoundaryVelocity.md'
  requirement = 'The system shall be able to provide a velocity vector field indicating grain boundary movement for visualization purposes.'
[../]

[./GrandPotentialPFM]
  type = 'Exodiff'
  input = 'GrandPotentialPFM.i'
  exodiff = 'GrandPotentialPFM_out.e'
  issues = '#6977'
  design = '/GrandPotentialKernelAction.md'
  requirement = 'MOOSE shall provide classes to implement a Grand Potential phase field formulation'
[../]

[./grand_potential_kernels]
  # Test
  type = Exodiff
  input = 'gpm_kernel.i'
  exodiff = 'gpm_kernel_out.e'
  issues = '#11386'
  design = 'action/GrandPotentialKernelAction.md'
  requirement = 'The GrandPotentialAction shall have the ability to generate kernels'
[../]

[./GrandPotentialMultiphase]
  type = 'Exodiff'
  input = 'GrandPotentialMultiphase.i'
  exodiff = 'GrandPotentialMultiphase_out.e'
  issues = '#8213'
  design = '/ACSwitching.md'
  requirement = 'MOOSE shall provide a Grand Potential based multiphase model'
[../]

[./GrandPotentialAnisotropy]
  type = 'Exodiff'
  input = 'GrandPotentialAnisotropy.i'
  exodiff = 'GrandPotentialAnisotropy_out.e'
  abs_zero = 1e-8
  issues = '#11802 #12554'
  design = '/ACInterface2DMultiPhase1.md /ACInterface2DMultiPhase2.md /InterfaceOrientationMultiphaseMaterial.md'
  requirement = 'MOOSE shall provide a Grand Potential based dendritic solidification capability in 2D'
[../]

[./GrandPotentialAnisotropy]
  type = 'Exodiff'
  input = 'GrandPotentialAnisotropy.i'
  exodiff = 'GrandPotentialAnisotropy_out.e'
  abs_zero = 1e-8
  issues = '#11802 #12554'
  design = '/ACInterface2DMultiPhase1.md /ACInterface2DMultiPhase2.md /InterfaceOrientationMultiphaseMaterial.md'
  requirement = 'MOOSE shall provide a Grand Potential based dendritic solidification capability in 2D'
[../]

[./GrandPotentialAnisotropy]
  type = 'Exodiff'
  input = 'GrandPotentialAnisotropy.i'
  exodiff = 'GrandPotentialAnisotropy_out.e'
  abs_zero = 1e-8
  issues = '#11802 #12554'
  design = '/ACInterface2DMultiPhase1.md /ACInterface2DMultiPhase2.md /InterfaceOrientationMultiphaseMaterial.md'
  requirement = 'MOOSE shall provide a Grand Potential based dendritic solidification capability in 2D'
[../]

[./GrandPotentialInterface]
  type = 'CSVDiff'
  input = 'GrandPotentialInterface.i'
  csvdiff = 'GrandPotentialInterface_out_mat_0001.csv'
  issues = '#12147'
  design = '/GrandPotentialInterface.md'
  requirement = 'MOOSE shall provide a material to automatically compute grand potential model interface parameters based on provided interfacial free energies and widths'
[../]

[./GrandPotentialAnisotropyAntitrap]
  type = 'Exodiff'
  input = 'GrandPotentialAnisotropyAntitrap.i'
  exodiff = 'GrandPotentialAnisotropyAntitrap_out.e'
  issues = '#13373'
  design = '/AntitrappingCurrent.md'
  requirement = 'MOOSE shall provide a Grand Potential based dendritic solidification capability for alloy with antitrapping current'
[../]

[./SinteringBase]
  type = 'Exodiff'
  input = 'SinteringBase.i'
  exodiff = 'SinteringBase_out.e'
  issues = '#18420'
  design = '/GrandPotentialSinteringMaterial.md'
  requirement = 'MOOSE shall provide a Grand Potential based sintering model'
[../]

[./SinteringParabolic]
  type = 'Exodiff'
  input = 'SinteringParabolic.i'
  exodiff = 'SinteringParabolic_out.e'
  issues = '#18420'
  design = '/GrandPotentialSinteringMaterial.md'
  requirement = 'MOOSE shall provide a Grand Potential based sintering model with parabolic defect free energies'
[../]

[./SinteringDilute]
  type = 'Exodiff'
  input = 'SinteringDilute.i'
  exodiff = 'SinteringDilute_out.e'
  issues = '#18420'
  design = '/GrandPotentialSinteringMaterial.md'
  requirement = 'MOOSE shall provide a Grand Potential based sintering model with dilute solution defect free energies'
[../]

[./SinteringIdeal]
  type = 'Exodiff'
  input = 'SinteringIdeal.i'
  exodiff = 'SinteringIdeal_out.e'
  issues = '#18420'
  design = '/GrandPotentialSinteringMaterial.md'
  requirement = 'MOOSE shall provide a Grand Potential based sintering model with ideal solution defect free energies'
[../]

[./derivative_parsed_material]
  type = 'Exodiff'
  input = 'derivative_parsed_material.i'
  exodiff = 'derivative_parsed_material.e'
  issues = '#4835'
  design = 'DerivativeParsedMaterial.md'
  requirement = 'The Kim-Kim-Suzuki model implementation shall use free energy densities provided by DerivativeParsedMaterials'
[../]

[./kks_example]
  type = 'Exodiff'
  input = 'kks_example.i'
  exodiff = 'kks_example.e'
  issues = '#4835'
  design = 'KKSCHBulk.md'
  requirement = 'A non-split version of the Kim-Kim-Suzuki shall be provided'
[../]

[./kks_example_split]
  type = 'Exodiff'
  input = 'kks_example_split.i'
  exodiff = 'kks_example_split.e'
  issues = '#4835'
  design = 'KKSSplitCHCRes.md'
  requirement = 'A split version of the Kim-Kim-Suzuki shall be provided'
[../]

[./kks_example_offset]
  type = 'Exodiff'
  input = 'kks_example_offset.i'
  exodiff = 'kks_example_offset.e'
  issues = '#10315'
  design = 'KKSSplitCHCRes.md'
  requirement = 'The split version of the Kim-Kim-Suzuki shall be yield the correct results with asymmetric free energies'
[../]

[./kks_xevac]
  type = 'Exodiff'
  input = 'kks_xevac.i'
  exodiff = 'kks_xevac.e'
  design = 'KKSSplitCHCRes.md'
  issues = '#4879'
  requirement = 'A multi component Kim-Kim-Suzuki model shall be implemented'
[../]

[./kks_multiphase]
  type = 'Exodiff'
  input = 'kks_multiphase.i'
  exodiff = 'kks_multiphase_out.e'
  issues = '#7007'
  design = 'KKSMultiACBulkC.md'
  requirement = 'A multi component Kim-Kim-Suzuki model shall be implemented'
[../]

[./derivativetwophasematerial]
  type = 'Exodiff'
  input = 'derivativetwophasematerial.i'
  exodiff = 'derivativetwophasematerial_out.e'
  fparser_jit = True
  requirement = 'Moose shall provide a material to combine two free energies materials into a WBM two phase free energy'
  design = 'DerivativeTwoPhaseMaterial.md'
  issues = '#4035'
[../]

[./orderparameterfunctionmaterial]
  type = 'Exodiff'
  input = 'orderparameterfunctionmaterial.i'
  exodiff = 'orderparameterfunctionmaterial_out.e'
  design = 'SwitchingFunctionMaterial.md'
  requirement = 'Moose shall provide a materials to generate barrier and switching function in a WBM multiphase model'
  issues = '#4355'
[../]

[./thirdphasesuppressionmaterial]
  type = 'Exodiff'
  input = 'thirdphasesuppressionmaterial.i'
  exodiff = 'thirdphasesuppressionmaterial_out.e'
  design = 'ThirdPhaseSuppressionMaterial.md'
  requirement = 'Moose shall provide a free energy penalty class that suppresses the formation of a third phase in grain boundaries'
  issues = '#6279'
[../]

[./multibarrierfunction]
  type = 'Exodiff'
  input = 'multibarrierfunction.i'
  exodiff = 'multibarrierfunction_out.e'
  design = 'MultiBarrierFunctionMaterial.md'
  requirement = 'Moose shall provide a material for computing barrier values in multiphase systems'
  issues = '#4545'
[../]

[./crosstermbarrierfunction]
  type = 'Exodiff'
  input = 'crosstermbarrierfunction.i'
  exodiff = 'crosstermbarrierfunction_out.e'
  design = 'CrossTermBarrierFunctionMaterial.md'
  requirement = 'Moose shall provide a material for computing independent barrier values for each phase pair in a multiphase system'
  issues = '#5192'
[../]

[./asymmetriccrosstermbarrierfunction]
  type = 'Exodiff'
  input = 'asymmetriccrosstermbarrierfunction.i'
  exodiff = 'asymmetriccrosstermbarrierfunction_out.e'
  design = 'AsymmetricCrossTermBarrierFunctionMaterial.md'
  requirement = 'Moose shall provide a material for computing independent barrier values for each phase pair in a multiphase system with asymmetric interface profiles'
  issues = '#6584'
[../]

[./lagrangemult]
  type = 'Exodiff'
  input = 'lagrangemult.i'
  exodiff = 'lagrangemult_out.e'
  fparser_jit = True
  requirement = 'Moose shall provide a lagrange multiplier based constraint for keeping the sum of all phase order parameters equal to one'
  design = 'SwitchingFunctionConstraintLagrange.md'
  issues = '#4545'
[../]

[./penalty]
  type = 'Exodiff'
  input = 'penalty.i'
  exodiff = 'penalty_out.e'
  requirement = 'Moose shall provide a penalty based constraint for keeping the sum of all phase order parameters equal to one'
  design = 'SwitchingFunctionConstraintLagrange.md'
  issues = '#4723'
[../]

[./crosstermfreeenergy]
  type = 'Exodiff'
  input = 'crosstermfreeenergy.i'
  exodiff = 'crosstermfreeenergy_out.e'
  requirement = 'Moose shall provide aan AuxKernel to compute the free energy contribution form pairwise phase barrier functions'
  design = 'CrossTermGradientFreeEnergy.md'
  issues = '#4710'
[../]

[./acmultiinterface]
  type = 'Exodiff'
  input = 'acmultiinterface.i'
  exodiff = 'acmultiinterface_out.e'
  requirement = 'Moose shall provide an Allen-Cahn gradient energy kernel with cross term contributions'
  design = 'ACMultiInterface.md'
  issues = '#4545'
[../]

[./acmultiinterface_aux]
  type = 'Exodiff'
  input = 'acmultiinterface_aux.i'
  exodiff = 'acmultiinterface_aux_out.e'
  requirement = 'Moose shall provide an Allen-Cahn gradient energy kernel with cross term contributions, and some order parameters may be aux variables'
  design = 'ACMultiInterface.md'
  issues = '#4545'
[../]

[./switchingfunction3phasematerial]
  type = 'Exodiff'
  input = 'switchingfunction3phasematerial.i'
  exodiff = 'switchingfunction3phasematerial_out.e'
  requirement = 'Moose shall provide switching functions for three-phase KKS phase-field model'
  design = 'SwitchingFunction3PhaseMaterial.md'
  issues = '#6857'
[../]

[./switchingfunctionmultiphasematerial]
  type = 'Exodiff'
  input = 'switchingfunctionmultiphasematerial.i'
  exodiff = 'switchingfunctionmultiphasematerial_out.e'
  requirement = 'Moose shall provide switching functions for multi-phase KKS phase-field model'
  design = 'SwitchingFunctionMultiPhaseMaterial.md'
  issues = '#8113'
[../]

[./mixedswitchingfunctionmaterial]
  type = 'Exodiff'
  input = 'mixedswitchingfunctionmaterial.i'
  exodiff = 'mixedswitchingfunctionmaterial_out.e'
  requirement = 'Moose shall provide mixed switching functions with order 234 and 246 and an adjustable weight'
  design = 'MixedSwitchingFunctionMaterial.md'
  issues = '#9042'
[../]

[./barrierfunctionmaterial]
  type = 'Exodiff'
  input = 'barrierfunctionmaterial.i'
  exodiff = 'barrierfunctionmaterial_out.e'
  requirement = 'Moose shall provide order 246 polynomials in the two phase barrier function'
  design = 'BarrierFunctionMaterial.md'
  issues = '#9301'
[../]

[./multi_test]
  type = 'Exodiff'
  input = 'multismoothcircleIC_test.i'
  exodiff = 'multismoothcircleIC_test_out.e'
  scale_refine = 1
  valgrind = 'HEAVY'
  rel_err = 4e-5
  design = 'MultiSmoothCircleIC.md'
  requirement = 'We shall be able to generate multiple smooth circle initial conditions with uniform radius variation type'
[../]

[./multi_normal_test]
  type = 'Exodiff'
  input = 'multismoothcircleIC_normal_test.i'
  exodiff = 'multismoothcircleIC_normal_test_out.e'
  scale_refine = 1
  valgrind = 'HEAVY'
  method = '!DBG' # Uses nodal feature flood count - probably should be revamped
  max_parallel = 1 # See #9886
  rel_err = 2e-5
  design = 'MultiSmoothCircleIC.md'
  requirement = 'We shall be able to generate multiple smooth circle initial conditions with normal radius variation type'
[../]

[./lattice_bounds]
  type = 'Exodiff'
  input = 'latticesmoothcircleIC_bounds.i'
  exodiff = 'latticesmoothcircleIC_bounds_out.e'
  valgrind = 'HEAVY'
  design = 'LatticeSmoothCircleIC.md'
  requirement = 'We shall be able to produce a lattice of smooth circle initial conditions, allowing the circles to exist on the simulation cell boundaries and using a uniform radius variation type'
[../]

[./lattice_test]
  type = 'Exodiff'
  input = 'latticesmoothcircleIC_test.i'
  exodiff = 'latticesmoothcircleIC_test_out.e'
  scale_refine = 1
  valgrind = 'HEAVY'
  max_parallel = 1 # See #9886
  design = 'LatticeSmoothCircleIC.md'
  requirement = 'We shall be able to produce a lattice of smooth circle initial conditions, using a uniform radius variation type'
[../]

[./lattice_normal_test]
  type = 'Exodiff'
  input = 'latticesmoothcircleIC_normal_test.i'
  exodiff = 'latticesmoothcircleIC_normal_test_out.e'
  scale_refine = 1
  valgrind = 'HEAVY'
  max_parallel = 1 # See #9886
  design = 'LatticeSmoothCircleIC.md'
  requirement = 'We shall be able to produce a lattice of smooth circle initial conditions using a normal radius variation type'
[../]

[./lattice_small_invalue_test]
  type = 'Exodiff'
  input = 'latticesmoothcircleIC_small_invalue_test.i'
  exodiff = 'latticesmoothcircleIC_small_invalue_test_out.e'
  scale_refine = 1
  valgrind = 'HEAVY'
  design = 'LatticeSmoothCircleIC.md'
  requirement = 'We shall be able to create multiple SpecifiedSmoothCircleICs with a small invalue'
[../]

[./specified_test]
  type = 'Exodiff'
  input = 'specifiedsmoothcircleIC_test.i'
  exodiff = 'specifiedsmoothcircleIC_test_out.e'
  scale_refine = 1
  valgrind = 'HEAVY'
  design = 'SpecifiedSmoothCircleIC.md'
  requirement = 'We shall be able to create several SpecifiedSmoothCircleICs with a standard invalue'
[../]

[./material]
  type = 'Exodiff'
  input = 'material.i'
  exodiff = 'material_out.e'
  requirement = "The nucleation material shall generate a free energy contribution proportional to the map value"
  design = 'materials/DiscreteNucleation.md'
  issues = '#5472'
[../]

[./material_recover1]
  type = 'CheckFiles'
  input = 'material.i'
  check_files = 'material_recover_cp/0005.xdr'
  cli_args = 'Executioner/num_steps=5 Outputs/recover/type=Checkpoint Outputs/recover/file_base=material_recover'
  prereq = 'material'
  recover = false
  requirement = "The nucleation system shall recoverable"
  design = 'materials/DiscreteNucleation.md'
  issues = '#5472'
[../]

[./material_recover2]
  # Recover the solve from part1 with a specified file
  type = 'Exodiff'
  input = 'material.i'
  exodiff = 'material_out.e'
  cli_args = '--recover material_recover_cp/0005'
  prereq = 'material_recover1'
  delete_output_before_running = false
  recover = false
  requirement = "The nucleation system shall recoverable"
  design = 'materials/DiscreteNucleation.md'
  issues = '#5472'
[../]

[./parallel]
  type = 'CSVDiff'
  input = 'parallel.i'
  csvdiff = 'parallel_out.csv'
  min_parallel = 4
  max_parallel = 4
  rel_err = 1e-3
  requirement = "The nucleation system shall insert nuclei in a manner independen of the domain decomposition and parallelization"
  design = 'userobjects/DiscreteNucleationInserter.md'
  issues = '#5472'
[../]

[./parallel_recover1]
  type = 'CheckFiles'
  input = 'parallel.i'
  check_files = 'parallel_recover_cp/0005.xdr'
  cli_args = 'Executioner/num_steps=5 Outputs/recover/type=Checkpoint Outputs/recover/file_base=parallel_recover'
  prereq = 'parallel'
  recover = false
  requirement = "The nucleation system shall recoverable"
  design = 'userobjects/DiscreteNucleationInserter.md'
  issues = '#5472'
[../]

[./parallel_recover2]
  # Recover the solve from part1 with a specified file
  type = 'CSVDiff'
  input = 'parallel.i'
  csvdiff = 'parallel_out.csv'
  rel_err = 1e-3
  cli_args = '--recover parallel_recover_cp/0005'
  prereq = 'parallel_recover1'
  delete_output_before_running = false
  recover = false
  requirement = "The nucleation system shall recoverable"
  design = 'userobjects/DiscreteNucleationInserter.md'
  issues = '#5472'
[../]

[./soft]
  type = 'Exodiff'
  input = 'soft.i'
  exodiff = 'soft_out.e'
  recover = false
  requirement = "The map shall provide the capability of defining soft interfaces for initial nuclei"
  design = 'userobjects/DiscreteNucleationMap.md'
  issues = '#5526'
[../]

[./marker]
  type = 'Exodiff'
  input = 'marker.i'
  exodiff = 'marker_out.e-s002'
  requirement = "The marker shall trigger refinement of the nucleus insertion area"
  design = 'markers/DiscreteNucleationMarker.md'
  issues = '#12099'
[../]

[./timestep]
  type = 'CSVDiff'
  input = 'timestep.i'
  csvdiff = 'timestep_out.csv'
  requirement = "The nucleation time step porocessor shall return a timestep limit that can be applied to cut the simulation timestep as new nuclei are inserted"
  design = 'postprocessors/DiscreteNucleationTimeStep.md'
  issues = '#12104'
[../]

[./data]
  type = 'CSVDiff'
  input = 'data.i'
  csvdiff = 'data_out.csv'
  requirement = "The nucleation data porocessor shall return the number of currently active nuclei or whether a change to the nucleus list has occurred"
  design = 'postprocessors/DiscreteNucleationData.md'
  issues = '#12114'
[../]

[./auxkernel]
  type = 'Exodiff'
  input = 'auxkernel.i'
  exodiff = 'auxkernel_out.e'
  requirement = "The nucleation auxkernel evaluates the nucleation map onto an elemental aux variable"
  design = 'auxkernels/DiscreteNucleationAux.md'
  issues = '#12114'
[../]

[./force]
  type = 'Exodiff'
  input = 'force.i'
  exodiff = 'force_out.e'
  requirement = "The nucleation force kernel returns a forcing function based on the nucleation map"
  design = 'auxkernels/DiscreteNucleationAux.md'
  issues = '#12114'
[../]

[./file]
  type = 'Exodiff'
  input = 'file.i'
  exodiff = 'file_out.e'
  requirement = "The discrete nucleation system shall provide a deterministic nucleus inserter that uses tabulated time and location data from a file. This test assigns fixed radius"
  design = 'userobjects/DiscreteNucleationFromFile.md'
  issues = '#12262'
[../]

[./file2]
  type = 'Exodiff'
  input = 'file2.i'
  exodiff = 'file2_out.e'
  requirement = "The discrete nucleation system shall provide a deterministic nucleus inserter that uses tabulated time and location data from a file. This test assigns variable radius"
  design = 'userobjects/DiscreteNucleationFromFile.md'
  issues = '#14544'
[../]

[./split]
  type = 'Exodiff'
  input = 'split.i'
  exodiff = 'split_out.e'
  requirement = 'A temperature gradient driving force for diffusion shall be added to the split form of the Cahn-Hilliard equation.'
[../]

[./split_temp]
  type = 'Exodiff'
  input = 'split_temp.i'
  exodiff = 'split_temp_out.e'
  requirement = 'A temperature gradient driving force for diffusion shall be added to the split form of the Cahn-Hilliard equation, where temperature is a coupled non-linear variable'
[../]

[./direct]
  type = 'Exodiff'
  input = 'direct.i'
  exodiff = 'direct_out.e'
  requirement = 'A temperature gradient driving force for diffusion shall be added to the non-split form of the Cahn-Hilliard equation.'
[../]

[./direct_temp]
  type = 'Exodiff'
  input = 'direct_temp.i'
  exodiff = 'direct_temp_out.e'
  requirement = 'A temperature gradient driving force for diffusion shall be added to the non-split form of the Cahn-Hilliard equation, where temperature is a coupled non-linear variable'
[../]

[./TotalFreeEnergy]
  type = 'Exodiff'
  input = 'TotalFreeEnergy_test.i'
  exodiff = 'TotalFreeEnergy_test_out.e'
  max_parallel = 1 # -pc_type lu
  requirement = 'We shall be able to calculate the free energy (with one variable) using an AuxKernel'
[../]

[./2var]
  type = 'Exodiff'
  input = 'TotalFreeEnergy_2var_test.i'
  exodiff = 'TotalFreeEnergy_2var_test_out.e-s004'
  fparser_jit = True
  rel_err = 1e-5
  requirement = 'We shall be able to calculate the free energy (with two variables) using an AuxKernel'
[../]

[./Nonconserved_1var]
  type = Exodiff
  input = 'Nonconserved_1var.i'
  exodiff = 'Nonconserved_1var_out.e'
  issues = '#9336'
  design = 'action/NonconservedAction.md'
  requirement = 'The phase field module shall provide an action to set up an Allen-Cahn problem'
[../]

[./Nonconserved_highorder]
  type = Exodiff
  input = 'Nonconserved_highorder.i'
  exodiff = 'Nonconserved_highorder_out.e'
  issues = '#9336'
  design = 'action/NonconservedAction.md'
  requirement = 'The NonconservedAction shall correctly set up Allen-Cahn problems with higher order elements'
[../]

[./Nonconserved_variableL]
  type = Exodiff
  input = 'Nonconserved_variableL.i'
  exodiff = 'Nonconserved_variableL_out.e'
  issues = '#9336'
  design = 'action/NonconservedAction.md'
  requirement = 'The NonconservedAction shall correctly set up Allen-Cahn problems with variable dependent mobilities'
[../]

[./Nonconserved_2vars]
  type = Exodiff
  input = 'Nonconserved_2vars.i'
  exodiff = 'Nonconserved_2vars_out.e'
  issues = '#9336'
  design = 'action/NonconservedAction.md'
  requirement = 'The NonconservedAction shall correctly set up Allen-Cahn problems with multiple order parameters'
[../]

[./both_split_2vars]
  type = Exodiff
  input = 'both_split_2vars.i'
  exodiff = 'both_split_2vars_out.e'
  issues = '#9336'
  design = 'action/ConservedAction.md action/NonconservedAction.md'
  requirement = 'The phase field module NonconservedAction and ConservedAction can be combined to construct a coupled Allen-Chan and split Cahn-Hilliard problem'
[../]

[./both_direct_2vars]
  type = Exodiff
  input = 'both_direct_2vars.i'
  exodiff = 'both_direct_2vars_out.e'
  issues = '#9336'
  design = 'action/ConservedAction.md action/NonconservedAction.md'
  requirement = 'The phase field module NonconservedAction and ConservedAction can be combined to construct a coupled Allen-Chan and non-split Cahn-Hilliard problem'
[../]

[./conserved_direct_1var]
  type = Exodiff
  input = 'conserved_direct_1var.i'
  exodiff = 'conserved_direct_1var_out.e'
  issues = '#9336'
  design = 'action/ConservedAction.md'
  requirement = 'The phase field module shall provide an action to set up a non-split Cahn-Hilliard problem'
[../]

[./conserved_split_1var]
  type = Exodiff
  input = 'conserved_split_1var.i'
  exodiff = 'conserved_split_1var_out.e'
  issues = '#9336'
  design = 'action/ConservedAction.md'
  requirement = 'The phase field module shall provide an action to set up a reverse split Cahn-Hilliard problem'
[../]

[./conserved_split_1var_high_order]
  type = Exodiff
  input = 'conserved_split_1var_high_order.i'
  exodiff = 'conserved_split_1var_high_order_out.e'
  issues = '#9336'
  design = 'action/ConservedAction.md'
  requirement = 'The phase field module shall provide an action to set up a reverse split Cahn-Hilliard problem with higher order elements'
[../]

[./conserved_direct_1var_variable_mob]
  type = Exodiff
  input = 'conserved_direct_1var_variable_mob.i'
  exodiff = 'conserved_direct_1var_variable_mob_out.e'
  issues = '#9336'
  design = 'action/ConservedAction.md'
  requirement = 'The phase field module shall provide an action to set up a non-split Cahn-Hilliard problem with variable dependent mobilities'
[../]

[./conserved_split_1var_variable_mob]
  type = Exodiff
  input = 'conserved_split_1var_variable_mob.i'
  exodiff = 'conserved_split_1var_variable_mob_out.e'
  abs_zero = 1e-9
  issues = '#9336'
  design = 'action/ConservedAction.md'
  requirement = 'The phase field module shall provide an action to set up a reverse split Cahn-Hilliard problem with variable dependent mobilities'
[../]

[./both_split_2vars]
  type = Exodiff
  input = 'both_split_2vars.i'
  exodiff = 'both_split_2vars_out.e'
  issues = '#9336'
  design = 'action/ConservedAction.md action/NonconservedAction.md'
  requirement = 'The phase field module NonconservedAction and ConservedAction can be combined to construct a coupled Allen-Chan and split Cahn-Hilliard problem'
[../]

[./both_direct_2vars]
  type = Exodiff
  input = 'both_direct_2vars.i'
  exodiff = 'both_direct_2vars_out.e'
  issues = '#9336'
  design = 'action/ConservedAction.md action/NonconservedAction.md'
  requirement = 'The phase field module NonconservedAction and ConservedAction can be combined to construct a coupled Allen-Chan and non-split Cahn-Hilliard problem'
[../]

[./conserved_forward_split_1var]
  type = Exodiff
  input = 'conserved_forward_split_1var.i'
  exodiff = 'conserved_forward_split_1var_out.e'
  issues = '#9378'
  design = 'action/ConservedAction.md'
  requirement = 'The phase field module shall provide an action to set up a forward split Cahn-Hilliard problem'
[../]

[./grain_growth]
  type = Exodiff
  input = 'grain_growth.i'
  exodiff = 'grain_growth_out.e'
  issues = '#9485'
  design = 'action/GrainGrowthAction.md'
  requirement = 'The phase field module shall provide an action to set up grain growth problems'
[../]

[./ad_grain_growth]
  type = Exodiff
  input = 'grain_growth.i'
  exodiff = 'grain_growth_out.e'
  issues = '#13539'
  design = 'action/GrainGrowthAction.md'
  requirement = 'The action to set up grain growth problems shall be able to set up an AD version of the problem which yields the same results as the non-AD version'
  cli_args = 'Modules/PhaseField/GrainGrowth/use_automatic_differentiation=true Materials/Copper/type=ADGBEvolution'
  prereq = 'grain_growth'
[../]

[./ad_grain_growth-jac]
  type = 'PetscJacobianTester'
  input = 'grain_growth.i'
  issues = '#13539'
  design = 'action/GrainGrowthAction.md'
  method = 'OPT' # this is too slow for anything but opt
  ratio_tol = 5e-8
  difference_tol = 5e-5
  run_sim = True
  requirement = 'The action to set up grain growth problems shall be able to set up an AD version of the problem which yields the same results as the non-AD version'
  cli_args = 'Modules/PhaseField/GrainGrowth/use_automatic_differentiation=true Materials/Copper/type=ADGBEvolution Executioner/num_steps=1 Mesh/nx=10 Mesh/ny=10'
  prereq = 'ad_grain_growth'
[../]

[./grain_growth_with_c]
  type = Exodiff
  input = 'grain_growth_with_c.i'
  exodiff = 'grain_growth_with_c_out.e'
  issues = '#9485'
  design = 'action/GrainGrowthAction.md'
  requirement = 'The grain growth action shall have the ability to set up problems with a pinning particle'
[../]

[./grain_growth_with_T_grad]
  type = Exodiff
  input = 'grain_growth_with_T_grad.i'
  exodiff = 'grain_growth_with_T_grad_out.e'
  issues = '#9485'
  design = 'action/GrainGrowthAction.md'
  requirement = 'The grain growth action shall have the ability to set up problems with a temperature gradient'
[../]

[./GrainGrowth_initial_from_file]
  type = Exodiff
  input = 'GrainGrowth_initial_from_file.i'
  exodiff = 'GrainGrowth_initial_from_file_out.e'
  prereq = prepare_mesh
  requirement = 'A capability to initialize polycrystal phase field variables from a file mesh shall be provided through the GrainGrowth action'
  design = 'action/GrainGrowthAction.md'
  issues = '#13624'
[../]

[diffusionrate]
  type = 'CSVDiff'
  input = 'diffusion_rate.i'
  csvdiff = 'diffusion_rate.csv'
  allow_test_objects = true
  requirement = 'The phase field module shall be able to compute the gradient of the rate of the variable using automatic differentiation.'
[]

[./split]
  type = 'Exodiff'
  input = 'split.i'
  exodiff = 'split_out.e'
  requirement = 'A split Cahn-Hilliard kernel with an anisotropic mobility shall be provided'
  design = "/CahnHilliardAniso.md"
  issues = "#5596"
[../]

[./nonsplit]
  type = 'Exodiff'
  input = 'nonsplit.i'
  exodiff = 'nonsplit_out.e'
  requirement = 'A non-split Cahn-Hilliard kernel with an anisotropic mobility shall be provided'
  design = "/SplitCHWResAniso.md"
  issues = "#5596"
[../]

[./diffusion]
  type = 'Exodiff'
  input = 'diffusion.i'
  exodiff = 'diffusion_out.e'
  requirement = 'A Diffusion kernel with an anisotropic material property diffusivity shall be provided'
  design = "/MatAnisoDiffusion.md"
  issues = "#5841"
[../]

[./ad_diffusion]
  type = 'Exodiff'
  input = 'ad_diffusion.i'
  exodiff = 'ad_diffusion_out.e'
  requirement = 'AD Diffusion with an anisotropic material property diffusivity shall agree with the non-AD version'
  design = "/ADMatAnisoDiffusion.md"
  issues = "#13632"
[../]

[./ad_diffusion_jac]
  type = 'PetscJacobianTester'
  input = 'ad_diffusion.i'
  ratio_tol = 1e-8
  difference_tol = 1e-7
  run_sim = True
  requirement = 'AD Diffusion with an anisotropic material property diffusivity shall have a perfect Jacobian'
  design = "/ADMatAnisoDiffusion.md"
  issues = "#13632"
[../]

[./admatreaction]
  type = Exodiff
  input = 'admatreaction.i'
  exodiff = 'admatreaction_out.e'
  allow_test_objects = true
  requirement = 'MOOSE shall provide an automatic differentiation mat reaction kernel'
[../]

[./admatreaction-jac]
  type = 'PetscJacobianTester'
  input = 'admatreaction.i'
  run_sim = 'True'
  cli_args = 'Outputs/exodus=false'
  allow_test_objects = true
  requirement = 'The Jacobian for the automatic differentiation mat reaction kernel shall be perfect'
[../]

[./boundary_intersecting_features]
  type = CSVDiff
  input = boundary_intersecting_features.i
  csvdiff = boundary_intersecting_features_out_grain_volumes_0000.csv
  # This test requires VTK because it uses the ImageFunction class
  vtk = true

  requirement = "The FeatureVolumeVectorPostprocessor shall capture volume information of individual features."
[../]

[./boundary_intersecting_features_flipped]
  type = CSVDiff
  input = boundary_intersecting_features.i
  cli_args = 'Mesh/file=sixteenth_image001_cropped3_closing_298_flipped.png Outputs/file_base=boundary_intersecting_features_flipped'
  csvdiff = boundary_intersecting_features_flipped_grain_volumes_0000.csv
  # This test requires VTK because it uses the ImageFunction class
  vtk = true

  requirement = "The FeatureVolumeVectorPostprocessor shall capture whether any feature intersects the boundary,  even when the non-root rank doesn't own a part of the feature that intersects the boundary."
[../]

[centroid_output_test]
  type = 'CSVDiff'
  input = 'feature_volume_vpp_test.i'
  csvdiff = 'feature_volume_vpp_test_out_features_0000.csv'

  issues = "#11395"
  requirement = "The FeatureVolumeVectorPostprocessor shall output individual centroid locations when requested."
  design = "/FeatureVolumeVectorPostprocessor.md"
[]

[centroid_output_test_parallel]
  type = 'CSVDiff'
  input = 'feature_volume_vpp_test.i'
  csvdiff = 'feature_volume_vpp_test_out_features_0000.csv'

  issues = "#11395"
  requirement = "The FeatureVolumeVectorPostprocessor shall output individual centroid locations when requested."
  design = "/FeatureVolumeVectorPostprocessor.md"

  min_parallel = 2
  prereq = 'centroid_output_test'
[]

[percolation_test]
  type = 'CSVDiff'
  input = 'percolation_test.i'
  csvdiff = 'percolation_test_out_features_0000.csv'

  issues = "#13169"
  requirement = "The FeatureVolumeVectorPostprocessor shall output whether a percolated pathway exists between specified primary_percolation_boundaries and secondary_percolation_boundaries."
  design = "/FeatureVolumeVectorPostprocessor.md"
[]

[percolation_test_parallel]
  type = 'CSVDiff'
  input = 'percolation_test.i'
  csvdiff = 'percolation_test_out_features_0000.csv'

  issues = "#13169"
  requirement = "The FeatureVolumeVectorPostprocessor shall output whether a percolated pathway exists between specified primary_percolation_boundaries and secondary_percolation_boundaries."
  design = "/FeatureVolumeVectorPostprocessor.md"

  min_parallel = 2
  prereq = 'percolation_test'
[]

[boundary_area_2D_test]
  type = 'CSVDiff'
  input = 'boundary_area_2D.i'
  csvdiff = 'boundary_area_2D_out_features_0000.csv'

  issues = "#13202"
  requirement = "The FeatureVolumeVectorPostprocessor shall calculate coverage of a supplied boundary  by each feature by integrating the corresponding order parameter on the boundary."
  design = "/FeatureVolumeVectorPostprocessor.md"

  min_parallel = 2
[]

[boundary_area_2D_single_test]
  type = 'CSVDiff'
  input = 'boundary_area_2D_single.i'
  csvdiff = 'boundary_area_2D_single_out_features_0000.csv'

  issues = "#13202"
  requirement = "The FeatureVolumeVectorPostprocessor shall calculate coverage of a supplied boundary by each feature by calulating the area/length of boundary elements."
  design = "/FeatureVolumeVectorPostprocessor.md"

  min_parallel = 2
[]

[boundary_area_3D_test]
  type = 'CSVDiff'
  input = 'boundary_area_3D.i'
  csvdiff = 'boundary_area_3D_out_features_0000.csv'

  issues = "#13202"
  requirement = "The FeatureVolumeVectorPostprocessor shall calculate coverage of a supplied boundary by each feature by integrating the corresponding order parameter on the boundary."
  design = "/FeatureVolumeVectorPostprocessor.md"

  min_parallel = 2
[]

[boundary_area_3D_single_test]
  type = 'CSVDiff'
  input = 'boundary_area_3D_single.i'
  csvdiff = 'boundary_area_3D_single_out_features_0000.csv'

  issues = "#13202"
  requirement = "The FeatureVolumeVectorPostprocessor shall calculate coverage of a supplied boundary by each feature by calulating the area/length of boundary elements."
  design = "/FeatureVolumeVectorPostprocessor.md"

  min_parallel = 2
[]

[centroid]
  type = 'CSVDiff'
  input = 'centroid.i'
  csvdiff = 'centroid_out_grain_volumes_0004.csv'

  issues = "#13202"
  requirement = "The FeatureVolumeVectorPostprocessor shall output grain centroid locations over multiple time steps"
  design = "/FeatureVolumeVectorPostprocessor.md"
[]

[./integral]
  type = 'CSVDiff'
  input = 'integral.i'
  csvdiff = 'integral.csv'

  requirement = 'A system to supply a noise field with a domain integral of zero shall be provided'
[../]

[./normal]
  max_parallel = 1
  type = 'Exodiff'
  input = 'normal.i'
  exodiff = 'normal.e'

  requirement = 'A system to supply a normal distributed noise field with a domain integral of zero shall be provided'
[../]

[./uniform]
  max_parallel = 1
  type = 'Exodiff'
  input = 'uniform.i'
  exodiff = 'uniform.e'

  requirement = 'A system to supply a uniformly distributed noise field with a domain integral of zero shall be provided'
[../]

[./integral_normal_masked]
  type = 'CSVDiff'
  input = 'normal_masked.i'
  csvdiff = 'normal_masked.csv'

  requirement = 'A system to supply a normal distributed noise field with an amplitude mask and a domain integral of zero shall be provided'
[../]

[./seed_error]
  type = 'RunException'
  input = 'integral.i'
  cli_args = 'Kernels/conserved_langevin/seed=1234'
  expect_err = "This parameter has no effect in this kernel. The noise is generated in the user object"

  requirement = "The conserved noise kernel shall error out with a helpful message if a 'seed' parameter is supplied"
[../]

[IdealGasFreeEnergy]
  type = 'Exodiff'
  input = 'IdealGasFreeEnergy.i'
  exodiff = 'IdealGasFreeEnergy_out.e'
  issues = '#9696'
  design = 'IdealGasFreeEnergy.md'
  requirement = 'The system shall provide an object to compute the Helmholtz free energy density of an ideal gas.'
[]

[VanDerWaalsFreeEnergy]
  type = 'Exodiff'
  input = 'VanDerWaalsFreeEnergy.i'
  exodiff = 'VanDerWaalsFreeEnergy_out.e'
  issues = '#9696'
  design = 'VanDerWaalsFreeEnergy.md'
  requirement = 'The system shall provide an object to compute the Helmholtz free energy density of a Van der Waals gas.'
[]

[non-split]
  type = 'Exodiff'
  input = 'MathFreeEnergy.i'
  exodiff = 'MathFreeEnergy_oversample.e'
  detail = "hardcoded in C++ and applied to a non-split Cahn-Hilliard system"
[]

[split]
  type = 'Exodiff'
  input = 'MathFreeEnergy_split.i'
  exodiff = 'MathFreeEnergy_split_out.e'
  detail = "hardcoded in C++ and applied to a split Cahn-Hilliard system"
[]

[eb-non-split]
  type = 'Exodiff'
  input = 'MathEBFreeEnergy.i'
  exodiff = 'MathEBFreeEnergy_oversample.e'
  detail = "implemented using the ExpressionBuilder system and applied to a non-split Cahn-Hilliard system"
[]

[eb-split]
  type = 'Exodiff'
  input = 'MathEBFreeEnergy_split.i'
  exodiff = 'MathEBFreeEnergy_split_out.e'
  detail = "implemented using the ExpressionBuilder system and applied to a split Cahn-Hilliard system"
[]

[eb-differing_names]
  type = 'Exodiff'
  input = 'MathEBFreeEnergy_split_name.i'
  exodiff = 'MathEBFreeEnergy_split_name_out.e'
  detail = 'implemented using the ExpressionBuilder system, correctly differentiating between variable names and corresponding parser symbol names (which are input parameter names)'
[]

[non-split]
  type = 'Exodiff'
  input = 'MathFreeEnergy.i'
  exodiff = 'MathFreeEnergy_oversample.e'
  detail = "hardcoded in C++ and applied to a non-split Cahn-Hilliard system"
[]

[split]
  type = 'Exodiff'
  input = 'MathFreeEnergy_split.i'
  exodiff = 'MathFreeEnergy_split_out.e'
  detail = "hardcoded in C++ and applied to a split Cahn-Hilliard system"
[]

[eb-non-split]
  type = 'Exodiff'
  input = 'MathEBFreeEnergy.i'
  exodiff = 'MathEBFreeEnergy_oversample.e'
  detail = "implemented using the ExpressionBuilder system and applied to a non-split Cahn-Hilliard system"
[]

[eb-split]
  type = 'Exodiff'
  input = 'MathEBFreeEnergy_split.i'
  exodiff = 'MathEBFreeEnergy_split_out.e'
  detail = "implemented using the ExpressionBuilder system and applied to a split Cahn-Hilliard system"
[]

[eb-differing_names]
  type = 'Exodiff'
  input = 'MathEBFreeEnergy_split_name.i'
  exodiff = 'MathEBFreeEnergy_split_name_out.e'
  detail = 'implemented using the ExpressionBuilder system, correctly differentiating between variable names and corresponding parser symbol names (which are input parameter names)'
[]

[coupled_temperatue]
  type = 'Exodiff'
  input = 'RegularSolutionFreeEnergy.i'
  exodiff = 'RegularSolutionFreeEnergy_out.e'
  detail = 'with a coupled temperature variable'
[]

[RegularSolutionFreeEnergy_const_T_default]
  type = 'Exodiff'
  input = 'RegularSolutionFreeEnergy_const_T.i'
  exodiff = 'RegularSolutionFreeEnergy_const_T_out.e'
  detail = 'with a default temperature of 300K'
[]

[RegularSolutionFreeEnergy_const_T_specified]
  type = 'Exodiff'
  input = 'RegularSolutionFreeEnergy_const_T.i'
  exodiff = 'RegularSolutionFreeEnergy_const_T_out.e'
  cli_args = Materials/free_energy/T=300
  detail = 'with a specified constant temperature'
[]

[RegularSolutionFreeEnergy_plog]
  type = 'Exodiff'
  input = 'RegularSolutionFreeEnergy_plog.i'
  exodiff = 'RegularSolutionFreeEnergy_plog_out.e'
  detail = 'with a the logarithm functions replaced by a Taylor expansion below a given threshold value'
[]

[prepare_tabulation]
  type = 'RunCommand'
  command = './tabulate_grain_growth_energy.py'
  detail = 'with a script for tabulating grain growth energies provided'
[]

[tabulated_grain_growth]
  type = 'Exodiff'
  input = 'CoupledValueFunctionFreeEnergy.i'
  exodiff = 'CoupledValueFunctionFreeEnergy_out.e'
  detail = 'using a pre-tabulated free energy through PiecewiseMultilinear functions'
  # prepare_tabulation is always skipped in Valgrind testing, which would fail this test
  valgrind = 'NONE'
[]

[./fourier_noise]
  type = 'Exodiff'
  input = 'fourier_noise.i'
  exodiff = 'fourier_noise_out.e'
  issues = '#13316'
  design = '/FourierNoise.md'
  requirement = 'A function that returns a new periodic random field with a lower wavelength cut-off shall be provided.'
[../]

[./test]
  type = 'Exodiff'
  input = 'test.i'
  exodiff = 'test_out.e-s005'
  group = 'adpative'
  requirement = 'MOOSE shall provide a polycrystalline material model with grain growth'
  design = 'PolycrystalKernelAction.md'
  issues = '98e22eda8bfaa1f6ded00c127145d832542aff70'
[../]

[./temperature_gradient]
  type = 'Exodiff'
  input = 'temperature_gradient.i'
  exodiff = 'temperature_gradient_out.e'
  requirement = 'A flat grain boundary shall not move along a temperature gradient'
  design = 'PolycrystalKernelAction.md'
  issues = '#9507'
[../]

[./off-diagonal]
  type = 'Exodiff'
  input = 'off-diagonal.i'
  exodiff = 'off-diagonal_out.e-s002'
  group = 'adaptive'
  requirement = 'The grain boundary evolution model shall provide off-diagonal Jacobians'
  design = 'PolycrystalKernelAction.md'
  issues = '98e22eda8bfaa1f6ded00c127145d832542aff70'
[../]

[./explicit]
  type = 'Exodiff'
  input = 'explicit.i'
  exodiff = 'explicit_out.e'
  requirement = 'The grain growth model shall work with explicit time integration'
  design = 'PolycrystalKernelAction.md'
  issues = '98e22eda8bfaa1f6ded00c127145d832542aff70'
[../]

[./thumb]
  type = 'Exodiff'
  input = 'thumb.i'
  exodiff = 'thumb_out.e-s006'
  group = 'adaptive'
  requirement = 'A thumb shaped grain IC shall be provided for direct comparison to grain boundary mobility experiments'
  design = 'ThumbIC.md'
  issues = '98e22eda8bfaa1f6ded00c127145d832542aff70'
[../]

[./hex]
  type = 'Exodiff'
  input = 'hex.i'
  exodiff = 'hex_out.e'
  requirement = 'A hexagonal grain structure IC shall be provided'
  design = 'PolycrystalHex.md'
  issues = '#8810'
[../]

[./boundingbox]
  type = 'Exodiff'
  input = 'boundingbox.i'
  exodiff = 'boundingbox_out.e-s003'
  requirement = 'A bicrystal grain IC shall be provided to set up a rectangular grain in a matrix'
  design = 'BicrystalBoundingBoxICAction.md'
  issues = '98e22eda8bfaa1f6ded00c127145d832542aff70'
[../]

[./evolution]
  type = 'Exodiff'
  input = 'evolution.i'
  exodiff = 'evolution_out.e'
  requirement = 'The grain boundary evolution model shall be able to compute the grain boundary mobility based on an activation energy'
  design = 'GBEvolution.md'
  issues = '98e22eda8bfaa1f6ded00c127145d832542aff70'
[../]

[./constant_mobility]
  type = 'Exodiff'
  input = 'constant_mobility.i'
  exodiff = 'constant_mobility_out.e'
  requirement = 'The grain boundary evolution model shall permit specifying a constant mobility'
  design = 'GBEvolution.md'
  issues = '98e22eda8bfaa1f6ded00c127145d832542aff70'
[../]

[./voronoi]
  type = 'Exodiff'
  input = 'voronoi.i'
  exodiff = 'voronoi_out.e'
  requirement = 'A voronoi tesselation grain structure IC shall be provided'
  design = 'PolycrystalVoronoi.md'
  issues = '#8810'
[../]

[./voronoi_columnar_3D]
  type = 'Exodiff'
  input = 'voronoi_columnar_3D.i'
  exodiff = 'voronoi_columnar_3D_out.e'
  requirement = 'A columnar grain IC shall be provided based on a 2D voronoi tesselation'
  design = 'PolycrystalVoronoi.md'
  issues = '#8810'
[../]

[./faux_voronoi]
  type = 'Exodiff'
  input = 'voronoi.i'
  exodiff = 'voronoi_out.e'
  prereq = 'voronoi'
  requirement = 'The system shall support a faux voronoi tesselation grain structure IC without using FeatureFloodCount when
                  the number of grains equal to the number of order parameters'
  design = 'FauxPolycrystalVoronoi.md'
  cli_args = 'UserObjects/voronoi/type=FauxPolycrystalVoronoi'
  issues = '#14697'
[../]

[./mesh_adaptivity]
  type = 'Exodiff'
  input = 'voronoi_adaptivity.i'
  exodiff = 'voronoi_adaptivity_out.e voronoi_adaptivity_out.e-s002'
  min_parallel = 2
  requirement = 'The system shall be able to apply mesh adaptivity and solve phase field equations on a mesh generated in parallel.'
  design = 'DistributedRectilinearMeshGenerator.md'
  issues = '#15348'
[../]

[./mesh_adaptivity_voronoi]
  type = 'Exodiff'
  input = 'voronoi_adaptivity.i'
  exodiff = 'voronoi_adaptivity_out.e voronoi_adaptivity_out.e-s002'
  min_parallel = 2
  prereq = 'mesh_adaptivity'
  cli_args = 'UserObjects/voronoi/type=PolycrystalVoronoi'
  requirement = 'The system shall be able to apply mesh adaptivity and solve phase field equations using PolycrystalVoronoi UO on a mesh generated in parallel.'
  design = 'DistributedRectilinearMeshGenerator.md'
  issues = '#15348  #16143'
[../]

[./mesh_adaptivity_ghost]
  type = 'Exodiff'
  input = 'voronoi_adaptivity_ghost.i'
  exodiff = 'voronoi_adaptivity_ghost_out.e voronoi_adaptivity_ghost_out.e-s002'
  # We want to check evaluable ghosting elements, and so we need to use the same
  # partitioner.
  min_parallel = 3
  max_parallel = 3
  # For regression tests, we use linear partitioner that should not be used in production run.
  # We will receive a mooseWarning when using linear partitioner.
  # Linear partitioner produces machine independent results
  allow_warnings = true
  requirement = 'The system shall be able to apply mesh adaptivity and output evaluable and ghosting elements using distributed generator'
  design = 'DistributedRectilinearMeshGenerator.md'
  issues = '#15348  #16143'
[../]

[./particle]
  type = 'Exodiff'
  input = 'particle.i'
  exodiff = 'particle_out.e-s005'
  custom_cmp = 'particle_out.cmp'
  requirement = 'The grain boundary evolution model shall provide coupling to conserved order parameters'
  design = 'ACGBPoly.md'
  issues = '98e22eda8bfaa1f6ded00c127145d832542aff70'
[../]

[./test_nodal]
  type = 'Exodiff'
  input = 'grain_tracker_nodal.i'
  exodiff = 'grain_tracker_nodal_out.e'

  # integer based maps can shift slightly in parallel
  max_parallel = 1
  valgrind = 'HEAVY'
  max_time = 500

  requirement = 'The system shall properly create and track grains when using the Nodal mode of the GrainTracker algorithm.'
  issues = '#4765'
  design = 'GrainTracker.md'
[../]

[./test_elemental]
  type = 'Exodiff'
  input = 'grain_tracker_test_elemental.i'
  exodiff = 'grain_tracker_test_elemental_out.e-s002'
  method = '!DBG' # slow test
  valgrind = 'HEAVY'
  max_time = 500

  requirement = 'The system shall properly create and track grains when using the Elemental mode of the GrainTracker algorithm.'
  issues = '#4881'
  design = 'GrainTracker.md'
[../]

[./test_advanced_op_assignment]
  type = 'CSVDiff'
  input = 'grain_tracker_advanced_op.i'
  csvdiff = 'grain_tracker_advanced_op_out.csv'
  recover = false # No solve
  max_parallel = 1

  requirement = "The PolycrystalVoronoi object shall create a valid coloring for a given number of grains and order parameters."
  issues = '#7005 #9018'
  design = "GrainTracker.md"
[../]

[./test_halo_periodic_bc]
  type = 'Exodiff'
  input = 'grain_halo_over_bc.i'
  exodiff = 'grain_halo_over_bc_out.e'
  method = '!DBG' # slow test
  valgrind = 'HEAVY'
  max_parallel = 1

  requirement = "The GrainTracker/PolycrystalUserObject base class shall support having only a grain halo bleeding over a periodic edge."
  issues = '#6713 #8926'
  design = "GrainTracker.md"
  abs_zero = 1e-7
  rel_err = 4e-5
[../]

[./test_remapping_serial]
  type = 'CSVDiff'
  input = 'grain_tracker_remapping_test.i'
  csvdiff = 'grain_tracker_remapping_test_out.csv'
  method = '!DBG' # slow test
  valgrind = 'NONE' # Exact same test used elsewhere
  # This test uses a coloring algorithm that requires PETSc >= 3.5.0.
  petsc_version = '>=3.5.0'

  requirement = "The GrainTracker object shall support remapping order parameter values."
  issues = '#1298'
  design = "GrainTracker.md"
[../]

[./test_remapping_parallel]
  type = 'CSVDiff'
  input = 'grain_tracker_remapping_test.i'
  csvdiff = 'grain_tracker_remapping_test_out.csv'

  method = '!DBG' # slow test
  valgrind = 'HEAVY'
  # This test uses a coloring algorithm that requires PETSc >= 3.5.0.
  petsc_version = '>=3.5.0'
  prereq = 'test_remapping_serial'

  min_parallel = 8 # Test distributed merge work with grain tracker

  requirement = "The FeatureFloodCount object shall distribute the merging of features when the processor count exceeds number of order parameters for efficiency."
  issues = '#11805'
  design = "GrainTracker.md"
[../]

[./test_recovery_serial_part1]
  type = 'RunApp'
  input = 'grain_tracker_remapping_test.i'
  cli_args = 'Outputs/file_base=gt_recover_serial_out Outputs/checkpoint=true --half-transient'

  method = '!DBG'
  valgrind = 'NONE'
  petsc_version = '>=3.5.0'

  requirement = "The GrainTracker object shall properly checkpoint unique grain information in serial."
  issues = "#6713 #12427"
  design = "GrainTracker.md"
[../]

[./test_recovery_serial_part2]
  type = 'CSVDiff'
  input = 'grain_tracker_remapping_test.i'
  csvdiff = 'gt_recover_serial_out.csv'
  cli_args = 'Outputs/file_base=gt_recover_serial_out --recover'
  prereq = 'test_recovery_serial_part1'
  delete_output_before_running = false

  method = '!DBG'
  valgrind = 'NONE'
  petsc_version = '>=3.5.0'

  requirement = "The GrainTracker object shall properly recover unique grain information in serial."
  issues = "#6713 #12427"
  design = "GrainTracker.md"
[../]

[./test_recovery_parallel_part1]
  type = 'RunApp'
  input = 'grain_tracker_remapping_test.i'
  cli_args = 'Outputs/file_base=gt_recover_parallel_out Outputs/checkpoint=true --half-transient'

  min_parallel = 8 # Test distributed merge work with grain tracker

  method = '!DBG'
  valgrind = 'NONE'
  petsc_version = '>=3.5.0'

  requirement = "The GrainTracker object shall properly checkpoint unique grain information in parallel."
  issues = "#6713 #12427"
  design = "GrainTracker.md"
[../]

[./test_recovery_parallel_part2]
  type = 'CSVDiff'
  input = 'grain_tracker_remapping_test.i'
  csvdiff = 'gt_recover_parallel_out.csv'
  cli_args = 'Outputs/file_base=gt_recover_parallel_out --recover'
  prereq = 'test_recovery_parallel_part1'
  delete_output_before_running = false

  min_parallel = 8 # Test distributed merge work with grain tracker

  method = '!DBG'
  valgrind = 'NONE'
  petsc_version = '>=3.5.0'

  requirement = "The GrainTracker object shall properly recover unique grain information in parallel."
  issues = "#6713 #12427"
  design = "GrainTracker.md"
[../]

[./remapping_with_reserve]
  type = 'Exodiff'
  input = 'grain_tracker_reserve.i'
  exodiff = 'grain_tracker_reserve_out.e'
  abs_zero = 1e-6 # Remapping can cause more significant diffs
  method = '!DBG' # slow test
  valgrind = 'HEAVY'

  requirement = "The GrainTracker shall support maintaining reserve order parameters for simulations where new grains can form."
  issues = '#7605'
  design = "GrainTracker.md"
[../]

[./start_with_zero_grains]
  type = 'Exodiff'
  input = 'grain_tracker_reserve.i'
  exodiff = 'start_with_zero_grains_out.e'
  abs_zero = 1e-6
  cli_args = 'ICs/inactive=gr0 Outputs/file_base=start_with_zero_grains_out'

  method = '!DBG' # slow test
  valgrind = 'HEAVY'

  requirement = "The GrainTracker shall support beginning a simulation with no active grain structure."
  issues = "#12200"
  design = "GrainTracker.md"
[../]

[./split_grain]
  type = 'CSVDiff'
  # Make sure that this simulation hits the "split grain" logic branch
  expect_out = 'Split Grain Detected'
  input = 'split_grain.i'
  csvdiff = 'split_grain_out.csv'
  max_time = 500
  method = '!DBG' # slow test
  valgrind = 'HEAVY'
  # This test uses a coloring algorithm that requires PETSc >= 3.5.0.
  petsc_version = '>=3.5.0'

  requirement = "The GrainTracker shall support handling the splitting of a grain during a simulation."
  issues = '#7875'
  design = "GrainTracker.md"

[../]

[./changing_avg_volume]
  type = 'CSVDiff'
  input = 'grain_tracker_volume_changing.i'
  csvdiff = 'grain_tracker_volume_changing_out.csv'
  rel_err = 1e-4
  method = '!DBG' # slow test
  valgrind = 'HEAVY'
  # This test uses a coloring algorithm that requires PETSc >= 3.5.0.
  petsc_version = '>=3.5.0'

  requirement = "The AverageFeatureVolume Postprocessor shall calculate the average volume of each active grain in a simulation."
  issues = '#11822'
  design = "GrainTracker.md"
[../]

[./tolerate_remap_failure]
  type = 'RunApp'
  input = 'grain_tracker_remapping_test.i'
  cli_args = 'UserObjects/grain_tracker/tolerate_failure=true UserObjects/voronoi/grain_num=16 Executioner/num_steps=6 UserObjects/voronoi/coloring_algorithm=bt Outputs/exodus=false Outputs/csv=false'
  expect_out = "Unable to find any suitable order parameters for remapping"
  allow_warnings = true
  valgrind = 'NONE'
  method = '!DBG' # slow test
  min_parallel = 2

  requirement = "The GrainTracker shall support a mode where it can continue even when it fails to remap for post-modern analysis and debugging."
  issues = '#11843'
  design = "GrainTracker.md"
[../]

[./one_grain]
  type = 'CSVDiff'
  input = 'one_grain.i'
  csvdiff = 'one_grain_out.csv'
  recover = false # no solve

  requirement = 'The system shall properly handle a single feature or grain taking up the entire domain.'
  issues = '#12216'
  design = 'GrainTracker.md'
[../]

[./test_faux_nodal]
  type = 'Exodiff'
  input = 'grain_tracker_nodal.i'
  cli_args = 'Outputs/file_base=gt_faux_nodal_out UserObjects/grain_tracker/type=FauxGrainTracker'

  exodiff = 'gt_faux_nodal_out.e'
  valgrind = 'HEAVY'
  max_time = 500

  requirement = "The system shall grain tracking behavior even when the number of grains equals the number of order parameters when using mode Nodal."
  issues = '#5453'
  design = 'GrainTracker.md'
[../]

[./test_faux_element]
  type = 'Exodiff'
  input = 'grain_tracker_test_elemental.i'
  cli_args = 'Outputs/file_base=gt_faux_elemental_out UserObjects/grain_tracker/type=FauxGrainTracker'

  exodiff = 'gt_faux_elemental_out.e-s002'
  method = '!DBG' # slow test
  valgrind = 'HEAVY'
  max_time = 500

  requirement = "The system shall grain tracking behavior even when the number of grains equals the number of order parameters when using mode Elemental."
  issues = '#5453'
  design = 'GrainTracker.md'
[../]

[./grain_tracker_volume]
  type = 'CSVDiff'
  input = 'grain_tracker_volume.i'
  csvdiff = 'grain_tracker_volume_out_grain_volumes_0000.csv grain_tracker_volume_out.csv'
  rel_err = 1.e-3

  # Lots of adaptivity, slower test
  min_parallel = 6

  requirement = "The system shall output individual grain tracker volumes."
  issues = '#7769'
  design = 'GrainTracker.md'
[../]

[./grain_tracker_volume_single]
  type = 'CSVDiff'
  input = 'grain_tracker_volume_single.i'
  csvdiff = 'grain_tracker_volume_single_out_grain_volumes_0000.csv'
  rel_err = 1.e-3

  # Lots of adaptivity, slower test
  min_parallel = 6

  requirement = "The system shall output individual grain tracker volumes assigning each element to only one grain (conservative)."
  issues = '#7769'
  design = 'GrainTracker.md'
[../]

[./feature_flood_volume]
  type = 'CSVDiff'
  input = 'grain_tracker_volume.i'
  cli_args = 'Postprocessors/grain_tracker/type=FeatureFloodCount'
  csvdiff = 'grain_tracker_volume_out_grain_volumes_0000.csv grain_tracker_volume_out.csv'
  prereq = grain_tracker_volume
  rel_err = 1.e-3

  # Lots of adaptivity, slower test
  min_parallel = 6

  requirement = "The system shall output individual grain tracker volumes when the number of order parameters equals the number of grains."
  issues = '#5453'
  design = 'GrainTracker.md'
[../]

[./test_advanced_op_assignment_bt_error]
  type = 'RunException'
  input = 'grain_tracker_advanced_op.i'
  expect_err = "Unable to find a valid grain to op coloring"
  recover = false # No solve
  cli_args = 'GlobalParams/op_num=4 Outputs/csv=false'

  requirement = "The PolycrystalUserObject base class shall error when a valid coloring cannot be found when using the simple back-tracking algorithm."
  issues = '#7005 #8804'
  design = "PolycrystalICs.md"
[../]

[./test_advanced_op_assignment_petsc_error]
  type = 'RunException'
  input = 'grain_tracker_advanced_op.i'
  expect_err = "Unable to find a valid grain to op coloring"
  recover = false # No solve
  cli_args = 'UserObjects/voronoi/coloring_algorithm=jp GlobalParams/op_num=7 Outputs/csv=false'

  requirement = "The PolycrystalUserObject base class shall error when a valid coloring cannot be found when using the built-in PETSc based stochastic algorithms."
  issues = '#7005 #8804'
  design = "PolycrystalICs.md"
[../]

[./test_poly_ic_handoff]
  type = 'CSVDiff'
  input = 'grain_tracker_remapping_test.i'
  csvdiff = 'test_poly_ic_handoff_out.csv'

  cli_args = 'Executioner/Adaptivity/initial_adaptivity=1 Executioner/Adaptivity/refine_fraction=0.7 Executioner/Adaptivity/max_h_level=2 Executioner/num_steps=1 Outputs/file_base=test_poly_ic_handoff_out'

  method = '!DBG' # slow test
  valgrind = 'NONE' # Exact same test used elsewhere
  # This test uses a coloring algorithm that requires PETSc >= 3.5.0.
  petsc_version = '>=3.5.0'

  requirement = "The GrainTracker shall support reusing the data structures from the PolycrystalUserObjectBase after the  initial condition for efficiency."
  issues = '#8810'
  design = "PolycrystalICs.md"
[../]

[./test_ebsd]
  type = 'Exodiff'
  input = 'grain_tracker_ebsd.i'
  exodiff = 'grain_tracker_ebsd_out.e'

  requirement = "The GrainTracker shall support reading EBSD data to create initial conditions."
  issues = '#5067 #9060'
  design = "PolycrystalICs.md"
[../]

[./test_ebsd_adapt]
  type = 'Exodiff'
  input = 'grain_tracker_ebsd.i'
  exodiff = 'grain_tracker_ebsd_adapt_out.e'
  cli_args = 'Executioner/Adaptivity/initial_adaptivity=1 Executioner/Adaptivity/refine_fraction=0.7 Executioner/Adaptivity/max_h_level=1 Outputs/file_base=grain_tracker_ebsd_adapt_out'

  requirement = "The GrainTracker shall support reading EBSD data to create initial conditions while supporting initial condition refinement."
  issues = '#5067 #9060'
  design = "PolycrystalICs.md"
[../]

[./distributed_poly_ic]
  type = 'CSVDiff'
  input = 'distributed_poly_ic.i'
  csvdiff = 'distributed_poly_ic_out.csv'

  # This test uses a coloring algorithm that requires PETSc >= 3.5.0.
  allow_test_objects = true
  petsc_version = '>=3.5.0'

  requirement = 'The system shall properly create PolycrystalICs with halo extensions (elements) when using DistributedMesh.'
  issues = '#12216'
  design = 'PolycrystalICs.md'
[../]

[RampIC]
  type = Exodiff
  input = 'RampIC.i'
  exodiff = 'RampIC_out.e'

  requirement = 'The system shall support a ramp or linear initial condition in one dimension.'
[]

[CrossIC]
  type = Exodiff
  input = 'CrossIC.i'
  exodiff = 'CrossIC_out.e'
  scale_refine = 1

  requirement = 'The system shall support the creation of a smooth cross initial condition.'
[]

[BimodalInverseSuperellipsoidsIC]
  type = Exodiff
  input = 'BimodalInverseSuperellipsoidsIC.i'
  exodiff = 'BimodalInverseSuperellipsoidsIC_out.e'
  scale_refine = 1

  detail = 'bimodal inverse superellipsoidal structures,'
[]

[BimodalSuperellipsoidsIC]
  type = Exodiff
  input = 'BimodalSuperellipsoidsIC.i'
  exodiff = 'BimodalSuperellipsoidsIC_out.e'
  scale_refine = 1

  detail = 'bimodal superellipsoidal structures,'
[]

[SmoothSuperellipsoidIC]
  type = Exodiff
  input = 'SmoothSuperellipsoidIC.i'
  exodiff = 'SmoothSuperellipsoidIC_out.e'
  scale_refine = 1
  valgrind = 'HEAVY'

  detail = 'smooth superellipsoidal structures,'
[]

[SpecifiedSmoothSuperellipsoidIC]
  type = Exodiff
  input = 'SpecifiedSmoothSuperellipsoidIC.i'
  exodiff = 'SpecifiedSmoothSuperellipsoidIC_out.e'
  scale_refine = 1
  valgrind = 'HEAVY'

  detail = 'smooth superellipsoidal structures specified from a file,'
[]

[SmoothSuperellipsoidIC_3D]
  type = Exodiff
  input = 'SmoothSuperellipsoidIC_3D.i'
  exodiff = 'SmoothSuperellipsoidIC_3D_out.e'
  scale_refine = 1
  valgrind = 'HEAVY'

  detail = 'smooth superellipsoidal structures in 3D,'
[]

[MultiSmoothSuperellipsoidIC_2D]
  type = Exodiff
  input = 'MultiSmoothSuperellipsoidIC_2D.i'
  exodiff = 'MultiSmoothSuperellipsoidIC_2D_out.e'

  detail = 'multiple smooth superellipsoidal structures in 2D, and'
[]

[MultiSmoothSuperellipsoidIC_3D]
  type = Exodiff
  input = 'MultiSmoothSuperellipsoidIC_3D.i'
  exodiff = 'MultiSmoothSuperellipsoidIC_3D_out.e'

  detail = 'multiple smooth superellipsoidal structures in 3D.'
[]

[PolycrystalVoronoiVoidIC_moregrains]
  type = 'Exodiff'
  input = 'PolycrystalVoronoiVoidIC_moregrains.i'
  exodiff = 'PolycrystalVoronoiVoidIC_moregrains_out.e'

  detail = 'large polycrystal structure with voids,'
[]

[PolycrystalVoronoiVoidIC_notperiodic]
  type = 'Exodiff'
  input = 'PolycrystalVoronoiVoidIC_notperiodic.i'
  exodiff = 'PolycrystalVoronoiVoidIC_notperiodic_out.e'

  detail = 'polycrystal structure with voids,'
[]

[PolycrystalVoronoiVoidIC_periodic]
  type = 'Exodiff'
  input = 'PolycrystalVoronoiVoidIC_periodic.i'
  exodiff = 'PolycrystalVoronoiVoidIC_periodic_out.e'

  detail = 'polycrystal structure with voids on a periodic domain,'
[]

[PolycrystalVoronoiVoidIC_periodic_fromfile]
  type = 'Exodiff'
  input = 'PolycrystalVoronoiVoidIC_periodic_fromfile.i'
  exodiff = 'PolycrystalVoronoiVoidIC_periodic_fromfile_out.e'
  method = '!DBG'

  detail = 'polycrystal structure with voids with centroids specified from a file,'
[]

[PolycrystalVoronoi_FromFile]
  type = Exodiff
  input = 'PolycrystalVoronoi_fromfile.i'
  exodiff = 'PolycrystalVoronoi_fromfile_out.e'
  # This test uses a coloring algorithm that requires PETSc >= 3.5.0.
  petsc_version = '>=3.5.0'

  detail = 'polycrystal structure with centroids specified from a file,'
[]

[PolycrystalCircles_FromFile]
  type = Exodiff
  input = 'polycrystalcircles_fromfile.i'
  exodiff = 'polycrystalcircles_fromfile_out.e'
  # This test uses a coloring algorithm that requires PETSc >= 3.5.0.
  petsc_version = '>=3.5.0'

  detail = 'polycrystal circles specified from a file,'
[]

[PolycrystalCircles_FromVector]
  type = Exodiff
  input = 'polycrystalcircles_fromvector.i'
  exodiff = 'polycrystalcircles_fromvector_out.e'
  # This test uses a coloring algorithm that requires PETSc >= 3.5.0.
  petsc_version = '>=3.5.0'

  detail = 'and polycrystal circles specified from an input vector,'
[]

[HexPolycrystalIC]
  type = Exodiff
  input = HexPolycrystalIC.i
  exodiff = HexPolycrystalIC_out.e
  # Testing optimal hex coloring with a backtracking algorithm
  method = '!DBG'

  detail = 'hexagonal structure, and'
[]

[TricrystalTripleJunctionIC]
  type = Exodiff
  input = 'TricrystalTripleJunctionIC.i'
  exodiff = 'TricrystalTripleJunctionIC_out.e'

  detail = 'smooth interface in a triple junction.'
[]

[polycrystal_BndsCalcIC]
  type = 'Exodiff'
  input = 'polycrystal_BndsCalcIC.i'
  exodiff = 'polycrystal_BndsCalcIC_out.e polycrystal_BndsCalcIC_out.e-s002'

  detail = 'polycrystal structure with IC specifying the GB locations '
[]

[SmoothCircleIC]
  type = Exodiff
  input = 'SmoothCircleIC.i'
  exodiff = 'SmoothCircleIC_out.e'
  scale_refine = 1
  valgrind = 'HEAVY'

  detail = 'smooth interface circles,'
[]

[SmoothCircleIC_3D]
  type = Exodiff
  input = 'SmoothCircleIC_3D.i'
  exodiff = 'SmoothCircleIC_3D_out.e'
  scale_refine = 1
  valgrind = 'HEAVY'

  detail = 'smooth interface spheres,'
[]

[SmoothCirclesFromFile]
  type = Exodiff
  input = 'circles_from_file_ic.i'
  exodiff = 'circles_from_file_ic_out.e'

  detail = 'smooth interface circles specified from a file, and'
[]

[RndSmoothCircleIC]
  type = Exodiff
  input = 'RndSmoothCircleIC.i'
  exodiff = 'RndSmoothCircleIC_out.e'
  scale_refine = 1
  valgrind = 'HEAVY'
  max_parallel = 1
  max_threads = 1

  detail = 'smooth interface circles with random noise.'
[]

[ClosePackIC]
  # Test close pack ic generator (2D)
  type = Exodiff
  input = ClosePackIC.i
  exodiff = ClosePackIC_out.e

  detail = 'in 2D, and'
[]

[ClosePackIC_3D]
  # Test close pack ic generator (3D)
  type = Exodiff
  input = ClosePackIC_3D.i
  exodiff = ClosePackIC_3D_out.e
  method = '!dbg' # This test is too slow in debug

  detail = 'in 3D.'
[]

[BoundingBoxIC]
  type = Exodiff
  input = 'BoundingBoxIC.i'
  exodiff = 'BoundingBoxIC_out.e'
  scale_refine = 1
  valgrind = 'HEAVY'

  detail = 'bounding boxes,'
[]

[RndBoundingBoxIC]
  type = Exodiff
  input = 'RndBoundingBoxIC.i'
  exodiff = 'RndBoundingBoxIC_out.e'
  scale_refine = 1
  valgrind = 'HEAVY'
  max_parallel = 1
  max_threads = 1
  recover = false # See #5207

  detail = 'bounding boxes with random noise,'
[]

[MultiBoundingBoxIC1D]
  type = Exodiff
  input = MultiBoundingBoxIC1D.i
  exodiff = MultiBoundingBoxIC1D_out.e

  detail = 'multiple bounding boxes in 1D,'
[]

[MultiBoundingBoxIC2D]
  type = Exodiff
  input = MultiBoundingBoxIC2D.i
  exodiff = MultiBoundingBoxIC2D_out.e

  detail = 'multiple bounding boxes in 2D, and'
[]

[MultiBoundingBoxIC3D]
  type = Exodiff
  input = MultiBoundingBoxIC3D.i
  exodiff = MultiBoundingBoxIC3D_out.e

  detail = 'multiple bounding boxes in 3D.'
[]

[IsolatedBoundingBoxIC_2D]
  type = Exodiff
  input = 'IsolatedBoundingBoxIC_2D.i'
  exodiff = 'IsolatedBoundingBoxIC_2D_out.e'

  detail = 'Diffused interface can be assigned for isolated bounding boxes in 2D,'
[]

[IsolatedBoundingBoxIC_3D]
  type = Exodiff
  input = 'IsolatedBoundingBoxIC_3D.i'
  exodiff = 'IsolatedBoundingBoxIC_3D_out.e'

  detail = '3D,'
[]

[NestedBoundingBoxIC_2D]
  type = Exodiff
  input = 'NestedBoundingBoxIC_2D.i'
  exodiff = 'NestedBoundingBoxIC_2D_out.e'

  detail = 'nested bounding boxes in 2D, and'
[]

[NestedBoundingBoxIC_3D]
  type = Exodiff
  input = 'NestedBoundingBoxIC_3D.i'
  exodiff = 'NestedBoundingBoxIC_3D_out.e'

  detail = '3D.'
[]

[IsolatedBoundingBoxIC_2D_Overlapping]
  type = RunException
  input = 'IsolatedBoundingBoxIC_2D_Overlapping.i'
  expect_err = 'Partially overlapping boxes are not allowed. Note that this includes the overlapping diffused interfaces. For nested boxes, use NestedBoundingBoxIC.C'

  detail = 'Using IsolatedBoundingBoxIC to create overlapping boxes will throw an error.'
[]

[timestepmaterial]
  type = 'Exodiff'
  input = 'timestepmaterial.i'
  exodiff = 'timestepmaterial_out.e'
  issues = '#7621'
  design = 'TimeStepMaterial.md'
  requirement = 'A material shall be implemented that provides dt, time, and time step number as material properties'
[]

[variablegradientmaterial]
  type = 'Exodiff'
  input = 'variablegradientmaterial.i'
  exodiff = 'variablegradientmaterial_out.e'
  issues = '#7621'
  requirement = 'A material shall be implemented that computes the magnitude of the gradient of a given variable'
  design = 'VariableGradientMaterial.md'
[]

[interface_grad]
  type = 'Exodiff'
  input = 'interface_grad.i'
  exodiff = 'interface_grad_out.e'
  issues = '#8211'
  requirement = 'An interface kernel shall be implemented to match gradients between two subdomains'
  design = 'InterfaceDiffusionFluxMatch.md'
[]

[interface_flux]
  type = 'Exodiff'
  input = 'interface_flux.i'
  exodiff = 'interface_flux_out.e'
  issues = '#8211'
  requirement = 'Demonstrate an InterfaceKernel (InterfaceDiffusionFlux) that can replace a pair of integrated DiffusionFluxBC boundary conditions.'
  design = 'InterfaceDiffusionBoundaryTerm.md'
[]

[equal_gradient_lagrange]
  type = 'Exodiff'
  input = 'equal_gradient_lagrange.i'
  exodiff = 'equal_gradient_lagrange_out.e'
  issues = '#8211'
  requirement = 'An InterfaceKernel set shall be implemented that can enforce the componentwise continuity of the gradient of a variable using the Lagrange multiplier method'
  design = 'EqualGradientLagrangeInterface.md'
[]

[coupled_value_function_ic]
  type = 'CSVDiff'
  input = 'coupled_value_function_ic.i'
  csvdiff = 'coupled_value_function_ic_out.csv'
  issues = '#16405'
  requirement = 'An initial condition shall be implemented that can set the value of a variable to the value of a function evaluated over a set of up to four coupled variables'
  design = 'CoupledValueFunctionIC.md'
[]

[./SmoothCircleIC_tanh]
  type = Exodiff
  input = 'SmoothCircleIC_tanh.i'
  exodiff = 'SmoothCircleIC_tanh_out.e'
  scale_refine = 1
  requirement = 'A smooth circle initial condition with a hyperbolic tangent profile shall be provided'
  design = 'ics/SmoothCircleIC.md'
  issues = '#12143'
[../]

[./prepare_mesh]
  type = RunApp
  input = 'prepare_mesh.i'
  requirement = 'A capability to initialize polycrystal phase field variables from a file mesh shall be provided'
  design = 'action/PolycrystalVariablesAction.md'
  issues = '#12294'
[../]

[./PolycrystalVariables_initial_from_file]
  type = Exodiff
  input = 'PolycrystalVariables_initial_from_file.i'
  exodiff = 'PolycrystalVariables_initial_from_file_out.e'
  prereq = prepare_mesh
  requirement = 'A capability to initialize polycrystal phase field variables from a file mesh shall be provided through the PolycrystalVariables action'
  design = 'action/PolycrystalVariablesAction.md'
  issues = '#12294'
[../]

[./tolerance_test]
  type = 'Exodiff'
  input = 'PFCRFF_tolerance_test.i'
  exodiff = 'PFCRFF_tolerance_test_out.e'

  requirement = "The system shall support a tolerance approach to handing the natural log when using the Cahn-Hilliard RFF kernel"
  issues = "#5338"
  design = "CHPFCRFF.md"
[../]

[./cancelation_test]
  type = 'Exodiff'
  input = 'PFCRFF_cancelation_test.i'
  exodiff = 'PFCRFF_cancelation_test_out.e'

  requirement = "The system shall support a cancelation approach to handing the natural log when using the Cahn-Hilliard RFF kernel"
  issues = "#5338"
  design = "CHPFCRFF.md"
[../]

[./expansion_test]
  type = 'Exodiff'
  input = 'PFCRFF_expansion_test.i'
  exodiff = 'PFCRFF_expansion_test_out.e'

  requirement = "The system shall support an expansion approach to handing the natural log when using the Cahn-Hilliard RFF kernel"
  issues = "#5338"
  design = "CHPFCRFF.md"
[../]

[./CahnHilliard]
  type = 'Exodiff'
  input = 'CahnHilliard.i'
  exodiff = 'CahnHilliard_out.e'
  issues = '#3356'
  design = '/CahnHilliard.md'
  requirement = 'MOOSE shall provide a non-split Cahn-Hilliard formalism'
[../]

[./SplitCahnHilliard]
  type = 'Exodiff'
  input = 'SplitCahnHilliard.i'
  exodiff = 'SplitCahnHilliard_out.e'
  issues = '#3356'
  design = '/SplitCHParsed.md'
  requirement = 'MOOSE shall provide a split Cahn-Hilliard formalism'
[../]

[./ADSplitCahnHilliard]
  type = 'Exodiff'
  input = 'ADSplitCahnHilliard.i'
  exodiff = 'SplitCahnHilliard_out.e'
  prereq = SplitCahnHilliard
  issues = '#13138'
  design = '/ADSplitCHParsed.md'
  requirement = 'MOOSE shall provide an AD version of the split Cahn-Hilliard formalism'
[../]

[./ADSplitCahnHilliard-jac]
  type = 'PetscJacobianTester'
  input = 'ADSplitCahnHilliard.i'
  run_sim = 'True'
  cli_args = 'Outputs/exodus=false Executioner/num_steps=2'
  ratio_tol = 1e-8
  difference_tol = 1e-4
  petsc_version = '<3.9.0 || >=3.9.4'
  issues = '#13138'
  design = '/ADSplitCHParsed.md'
  requirement = 'The Jacobian for the AD split Cahn-Hilliard problem shall be perfect'
[../]

[./SplitCHWRes]
  type = 'Exodiff'
  input = 'SplitCHWRes.i'
  exodiff = 'SplitCHWRes_out.e'
  issues = '#14140'
  design = '/SplitCHWRes.md'
  requirement = 'MOOSE shall provide a kernel option to implement transport terms for the off-diagonal Onsager matrix components'
[../]

[./AllenCahn]
  type = 'Exodiff'
  input = 'AllenCahn.i'
  exodiff = 'AllenCahn_out.e'
  issues = '#3816'
  design = '/AllenCahn.md'
  requirement = 'A Allen-Cahn phase field formulation shall be provided'
[../]

[./analyzejacobian_AllenCahn]
  type = 'AnalyzeJacobian'
  input = 'AllenCahn.i'
  prereq = 'CoupledAllenCahn'
  expect_out = '\nNo errors detected. :-\)\n'
  resize_mesh = true
  recover = false
  petsc_version = '<3.9.0 || >=3.9.4'
  issues = '#3816'
  design = '/AllenCahn.md'
  requirement = 'The Allen-Cahn model shall have perfect Jacobians'
[../]

[./AllenCahnVariableL]
  type = 'Exodiff'
  input = 'AllenCahnVariableL.i'
  exodiff = 'AllenCahnVariableL_out.e'
  issues = '#3816'
  design = '/AllenCahn.md'
  requirement = 'A Allen-Cahn phase field formulation with a variable dependent mobility shall be provided'
[../]

[./ADAllenCahn]
  type = 'Exodiff'
  input = 'ADAllenCahn.i'
  allow_test_objects = true
  exodiff = 'ADAllenCahn_out.e'
  issues = '#13197'
  design = '/ADAllenCahn.md'
  requirement = 'An AD version of the Allen-Cahn phase field formulation shall be provided'
[../]

[./ADAllenCahn-jac]
  type = 'PetscJacobianTester'
  input = 'ADAllenCahn.i'
  allow_test_objects = true
  run_sim = 'True'
  cli_args = 'Outputs/exodus=false Executioner/num_steps=1'
  ratio_tol = 1e-7
  difference_tol = 1e-5
  issues = '#13197'
  design = '/ADAllenCahn.md'
  requirement = 'The Jacobian for the AD Allen-Cahn problem shall be perfect'
[../]

[./ADAllenCahnVariableL]
  type = 'Exodiff'
  input = 'ADAllenCahnVariableL.i'
  allow_test_objects = true
  exodiff = 'ADAllenCahnVariableL_out.e'
  issues = '#13197'
  design = '/ADAllenCahn.md'
  requirement = 'An AD version of the Allen-Cahn phase field formulation with a variable dependent mobility shall be provided'
[../]

[./ADAllenCahnVariableL-jac]
  type = 'PetscJacobianTester'
  input = 'ADAllenCahnVariableL.i'
  allow_test_objects = true
  run_sim = 'True'
  cli_args = 'Outputs/exodus=false Executioner/num_steps=1'
  ratio_tol = 1e-7
  difference_tol = 1e-5
  issues = '#13197'
  design = '/ADAllenCahn.md'
  requirement = 'The Jacobian for the AD Allen-Cahn problem with a variable dependent mobility shall be perfect'
[../]

[./CoupledAllenCahn]
  type = 'Exodiff'
  prereq = 'AllenCahn'
  input = 'CoupledAllenCahn.i'
  exodiff = 'AllenCahn_out.e'
  issues = '#6194'
  design = '/CoupledAllenCahn.md'
  requirement = 'A coupled Allen-Cahn formulation shall be provided'
[../]

[./CoupledCoefAllenCahn]
  type = 'Exodiff'
  input = 'CoupledCoefAllenCahn.i'
  exodiff = 'CoupledCoefAllenCahn_out.e'
  issues = '#6265'
  design = '/CoupledAllenCahn.md'
  requirement = 'A coupled Allen-Cahn formulation with a user defined prefactor shall be provided'
[../]

[./MatGradSquareCoupled]
  type = 'Exodiff'
  input = 'MatGradSquareCoupled.i'
  exodiff = 'MatGradSquareCoupled_out.e'
  issues = '#10721'
  design = '/MatGradSquareCoupled.md'
  requirement = 'A coupled gradient square kernel shall be provided'
[../]

[./SimpleSplitCHWRes]
  type = 'Exodiff'
  input = 'SimpleSplitCHWRes.i'
  exodiff = 'SimpleSplitCHWRes_out.e'
  issues = '#6910'
  design = '/SimpleSplitCHWRes.md'
  requirement = 'A suite of simple to understand phase field kernels shall be provided for novice users'
[../]

[./SimpleCHInterface]
  type = 'Exodiff'
  input = 'SimpleCHInterface.i'
  exodiff = 'SimpleCHInterface_out.e'
  issues = '#6910'
  design = '/SimpleCHInterface.md'
  requirement = 'A suite of simple to understand phase field kernels shall be provided for novice users'
[../]

[./ACInterfaceStress]
  type = 'Exodiff'
  input = 'ACInterfaceStress.i'
  exodiff = 'ACInterfaceStress_out.e'
  cli_args = 'Executioner/dt=0.001'
  issues = '#9658'
  design = '/ACInterfaceStress.md'
  requirement = 'A free energy contribution from elastic stresses in interfaces shall be provided'
[../]

[./analyzejacobian_ACInterfaceStress]
  type = 'AnalyzeJacobian'
  input = 'ACInterfaceStress_jacobian.i'
  expect_out = '\nNo errors detected. :-\)\n'
  recover = false
  heavy = true
  issues = '#9658'
  design = '/ACInterfaceStress.md'
  requirement = 'The free energy contribution from elastic stresses in interfaces shall shall have a perfect Jacobian'
[../]

[./nonuniform_barrier_coefficient]
  type = 'Exodiff'
  input = 'nonuniform_barrier_coefficient.i'
  exodiff = 'nonuniform_barrier_coefficient_out.e'
  issues = '#11829'
  design = '/ACBarrierFunction.md'
  requirement = 'The barrier height and gradient energy parameter must be permitted to depend on non-linear variables'
[../]

[./EulerAngleVariables2RGBAux]
  type = 'Exodiff'
  input = 'EulerAngleVariables2RGBAux.i'
  exodiff = 'EulerAngleVariables2RGBAux_out.e'

  issues = "#7332"
  design = "EulerAngleVariables2RGBAux.md"
  requirement = "The system shall output an RGB field that can be interpreted as either a component
                   or a combined Euler angle given a grain structure."
[../]

[./1phase_reconstruction]
  type = 'Exodiff'
  input = '1phase_reconstruction.i'
  exodiff = '1phase_reconstruction_out.e'

  issues = "#9110"
  design = "EBSD.md"
  requirement = "The system shall support reading EBSD data and initializing a Polycrystal grain structure with that data."
[../]

[./1phase_reconstruction_40x40]
  type = 'Exodiff'
  input = '1phase_reconstruction.i'

  # Read in a 2-phase file but ignore phase
  cli_args = 'Mesh/ebsd_mesh/filename=ebsd_40x40_2_phase.txt GlobalParams/op_num=6 Outputs/file_base=1phase_reconstruction_40x40_out'
  exodiff = '1phase_reconstruction_40x40_out.e'

  issues = "#9110"
  design = "EBSD.md"
  requirement = "The system shall support reading EBSD data to initalized Polycrystal grain structures while supporting
                    reduced order parameter IC assignment."
[../]

[./1phase_evolution]
  type = 'Exodiff'
  input = '1phase_evolution.i'
  exodiff = '1phase_evolution_out.e'
  max_time = 1000

  issues = "#9110"
  design = "EBSD.md"
  requirement = "The system shall support grain evolution when beginning from EBSD ICs."
[../]

[./2phase_reconstruction]
  type = 'Exodiff'
  input = '2phase_reconstruction.i'
  exodiff = '2phase_reconstruction_out.e'
  recover = false # issue #5188

  issues = "#9110 #5920"
  design = "EBSD.md"
  requirement = "The system shall support reading a single phase of EBSD data at a time to initialize PolycrystalICs."
[../]

[./2phase_reconstruction2]
  type = 'Exodiff'
  input = '2phase_reconstruction2.i'
  exodiff = '2phase_reconstruction2_out.e'
  recover = false # issue #5188

  issues = "#9110 #5920"
  design = "EBSD.md"
  requirement = "The system shall support reading a single phase of EBSD data at a time to initialize PolycrystalICs
                   while supporting reduced order parameter IC assignment."
[../]

[./2phase_reconstruction3]
  type = 'Exodiff'
  input = '2phase_reconstruction3.i'
  exodiff = '2phase_reconstruction3_out.e'
  recover = false # issue #5188

  issues = "#9110 #5920"
  design = "EBSD.md"
  requirement = "The system shall support reading EBSD data to initialize PolycrystalICs with discontinuous numbering."
[../]

[./2phase_reconstruction4]
  type = 'Exodiff'
  input = '2phase_reconstruction4.i'
  exodiff = '2phase_reconstruction4_out.e'
  recover = false # issue #5188

  issues = "#9110 #5920"
  design = "EBSD.md"
  requirement = "The system shall support reading a single phase of EBSD data at a time to initialize PolycrystalICs
                   while supporting reduced order parameter IC assignment and display the coloring."
[../]

[./regions_without_grains]
  type = 'CSVDiff'
  input = 'euler2rgb_no_grain_region.i'
  csvdiff = 'euler2rgb_no_grain_region_out.csv'
  max_time = 1000

  issues = "#9110 #5920"
  design = "EBSD.md"
  requirement = "The system shall support reading a single phase of EBSD data at a time to initialize PolycrystalICs
                   and support regions within the domain that contain no grains at all."
[../]

[./average_orientation]
  type = 'Exodiff'
  input = 'euler2rgb_non_uniform_orientation.i'
  exodiff = 'euler2rgb_non_uniform_orientation_out.e'

  issues = "#13869"
  design = "EBSDReader.md"
  method = "!dbg"
  requirement = "The system shall support grain evolution when beginning from EBSD ICs and compute average orientation
                   of non-uniformly oriented grains."
[../]