Merge pull request #29000 from gambka/gmg_error_checks

Add error checking to GeneratedMeshGenerator

framework/src/meshgenerators/GeneratedMeshGenerator.C

@@ -113,6 +113,12 @@ GeneratedMeshGenerator::GeneratedMeshGenerator(const InputParameters & parameter
 {
   if (_gauss_lobatto_grid && (_bias_x != 1.0 || _bias_y != 1.0 || _bias_z != 1.0))
     mooseError("Cannot apply both Gauss-Lobatto mesh grading and biasing at the same time.");
+  if (_xmax < _xmin)
+    paramError("xmax", "xmax must be larger than xmin.");
+  if (_ymax < _ymin)
+    paramError("ymax", "ymax must be larger than ymin.");
+  if (_zmax < _zmin)
+    paramError("zmax", "zmax must be larger than zmin.");
 }
 
 std::unique_ptr<MeshBase>

test/tests/meshgenerators/generated_mesh_generator/tests

@@ -114,4 +114,34 @@
     design = 'meshgenerators/GeneratedMeshGenerator.md'
     recover = false
   []
+
+  [error_check]
+    issues = '#28998'
+    design = 'meshgenerators/GeneratedMeshGenerator.md'
+    requirement = 'The system shall error when unphysical input combinations are provided to the generated mesh generator, including when'
+    [xmax]
+      type = 'RunException'
+      input = 'generated_mesh_generator.i'
+      cli_args = 'Mesh/gmg/xmin=2 --mesh-only'
+      expect_err = 'xmax must be larger than xmin.'
+      recover = false
+      detail = 'the specified maximum X-coordinate is less than the minimum X-coordinate, and'
+    []
+    [ymax]
+      type = 'RunException'
+      input = 'generated_mesh_generator.i'
+      cli_args = 'Mesh/gmg/ymin=2 --mesh-only'
+      expect_err = 'ymax must be larger than ymin.'
+      recover = false
+      detail = 'the specified maximum Y-coordinate is less than the minimum Y-coordinate, and'
+    []
+    [zmax]
+      type = 'RunException'
+      input = 'generated_mesh_generator.i'
+      cli_args = 'Mesh/gmg/zmin=2 --mesh-only'
+      expect_err = 'zmax must be larger than zmin.'
+      recover = false
+      detail = 'the specified maximum Z-coordinate is less than the minimum Z-coordinate.'
+    []
+  []
 []