increase cov

src/ModalInterlace.jl

@@ -70,8 +70,9 @@ getindex(A::ModalTrav, K::Block{1}) = _modaltravgetindex(A.matrix, K)
 _modaltravgetindex(mat, K) = _modaltravgetindex(MemoryLayout(mat), mat, K)
 function _modaltravgetindex(_, mat, K::Block{1})
     k = Int(K)
-    m = (k+1)÷2
-    _modaltravgetindex(Matrix(mat[1:m, 1:4m+1]), K)
+    m = k ÷ 2 + 1
+    n = 4(m-1) + 1
+    _modaltravgetindex(Matrix(mat[1:m, 1:n]), K)
 end
 
 function _modaltravgetindex(::AbstractStridedLayout, mat, K::Block{1})

test/test_modalinterlace.jl

@@ -14,14 +14,24 @@ import MultivariateOrthogonalPolynomials: ModalInterlace, ModalInterlaceLayout,
     @test a+a isa ModalTrav
     @test a+b isa PseudoBlockArray
     @test a+v isa BlockArray
+    @test a .+ exp.(a .+ 1) isa ModalTrav
 
     @test exp.(a) == exp.(b)
     @test a + a == 2a == a+b
 
+    @test a .+ exp.(a .+ 1) == b .+ exp.(b .+ 1)
+
     for k = 1:6
         a[k] = k
     end
     @test a == 1:6
+
+    m = ModalTrav(reshape(1:10, 2, 5))
+    @test m[Block(3)] == [2,7,9]
+    @test m == [1,3,5,2,7,9]
+
+    @test copy(m) isa ModalTrav{Int,Matrix{Int}}
+    @test copy(m) == m
 end
 
 @testset "ModalInterlace" begin