--- a/test/Grids/tensor_grid_test.jl	Sat May 25 16:07:10 2024 -0700
+++ b/test/Grids/tensor_grid_test.jl	Sun May 26 17:35:52 2024 -0700
@@ -184,6 +184,17 @@
         @test boundary_indices(TensorGrid(g₄,g₁), TensorGridBoundary{2, Lower}()) == (1,)
         @test boundary_indices(TensorGrid(g₄,g₁), TensorGridBoundary{2, Upper}()) == (11,)
     end
+
+    @testset "orthogonal_grid" begin
+        g₁ = EquidistantGrid(range(0,1,length=11))
+        g₂ = EquidistantGrid(range(2,3,length=6))
+        g₃ = EquidistantGrid(range(4,5,length=7))
+    
+        @test orthogonal_grid(TensorGrid(g₁, g₂, g₃), TensorGridBoundary{1, Lower}()) == g₁
+        @test orthogonal_grid(TensorGrid(g₁, g₂, g₃), TensorGridBoundary{2, Lower}()) == g₂
+        @test orthogonal_grid(TensorGrid(g₁, g₂, g₃), TensorGridBoundary{3, Upper}()) == g₃
+    end
+
 end
 
 @testset "combined_coordinate_vector_type" begin