a test for checking the material property coverage with DG idaholab#9482

test/tests/dgkernels/2d_diffusion_dg/dg_material_coverage.i

@@ -0,0 +1,88 @@
+[Mesh]
+  type = GeneratedMesh
+  dim = 2
+  nx = 2
+  ny = 2
+[]
+
+[Debug]
+  show_material_props = true
+[]
+
+[MeshModifiers]
+  [./subdomain1]
+    type = SubdomainBoundingBox
+    bottom_left = '0 0 0'
+    top_right = '0.5 0.5 0'
+    block_id = 1
+  [../]
+[]
+
+[Variables]
+  [./u]
+    order = FIRST
+    family = MONOMIAL
+  [../]
+[]
+
+[Kernels]
+  [./diff]
+    type = DiffMKernel
+    variable = u
+    mat_prop = prop1
+    offset = 0
+  [../]
+  [./force]
+    type = BodyForce
+    variable = u
+  [../]
+[]
+
+[DGKernels]
+  [./dgdiffusion]
+    type = DGDiffusion
+    variable = u
+    epsilon = 1
+    sigma = 4
+    diff = prop2
+  [../]
+[]
+
+[BCs]
+  [./vacuum]
+    type = VacuumBC
+    variable = u
+    boundary = 'left right top bottom'
+  [../]
+[]
+
+[Materials]
+  [./mat1]
+    type = GenericConstantMaterial
+    block = '0 1'
+    prop_names = 'prop1'
+    prop_values = '1'
+  [../]
+  [./mat2]
+    type = GenericConstantMaterial
+# missing block 0 here, we should see an error!
+    block = '1'
+    prop_names = 'prop2'
+    prop_values = '2'
+  [../]
+[]
+
+[Postprocessors]
+  [./unorm]
+    type = ElementL2Norm
+    variable = u
+  [../]
+[]
+
+[Executioner]
+  type = Steady
+[]
+
+[Outputs]
+  exodus = true
+[]

test/tests/dgkernels/2d_diffusion_dg/tests

@@ -6,4 +6,9 @@
     group = 'requirements adaptive'
     max_parallel = 1
   [../]
+  [./coverage_test]
+    type = 'RunException'
+    input = 'dg_material_coverage.i'
+    expect_err = "Material property 'prop2', requested by 'dgdiffusion' is not defined on block 0"
+  [../]
 []