Test show for ∘ (#36009)

Author: tkf

test/operators.jl

@@ -135,6 +135,9 @@ Base.promote_rule(::Type{T19714}, ::Type{Int}) = T19714
     @test ∘(FreeMagma(1), FreeMagma(2), FreeMagma(3), FreeMagma(4)) === FreeMagma((((1,2), 3), 4))
 
     @test fieldtypes(typeof(Float64 ∘ Int)) == (Type{Float64}, Type{Int})
+
+    @test repr(uppercase ∘ first) == "uppercase ∘ first"
+    @test sprint(show, "text/plain", uppercase ∘ first) == "uppercase ∘ first"
 end
 
 @testset "function negation" begin