add expand_faceviews for MetaMesh (#250)

* add expand_faceviews for MetaMesh

* add test

Author: ffreyer

src/meshes.jl

@@ -390,6 +390,8 @@ function expand_faceviews(mesh::Mesh)
     end
 end
 
+expand_faceviews(m::MetaMesh) = MetaMesh(expand_faceviews(Mesh(m)), meta(m))
+
 function merge_vertex_indices(
         faces::NTuple{N_Attrib, <: AbstractVector{FT}},
         vertex_index_counter::Integer = T(1)

test/meshes.jl

@@ -54,6 +54,11 @@ end
     @test normals(m2) != normals(m)
     @test normals(m2) == [only(values(normals(m))) for _ in 1:4]
     @test isempty(m2.views)
+
+    mm = MetaMesh(m, Dict(:test => 1, :a => "a"))
+    mm2 = GeometryBasics.expand_faceviews(mm)
+    @test mm2.meta == mm.meta
+    @test Mesh(mm2) == m2
 end
 
 @testset "Duplicate face removal" begin