Add display method for ADResult too

Author: penelopeysm

src/test_utils/ad.jl

@@ -168,6 +168,19 @@ struct ADResult{Tparams<:AbstractFloat,Tresult<:AbstractFloat,Ttol<:AbstractFloa
     seconds)"
     primal_time::Union{Nothing,Tresult}
 end
+function Base.show(io::IO, ::MIME"text/plain", result::ADResult)
+    println(io, "ADResult for $(result.model.f) with $(result.adtype):")
+    println(io, "  ├ value_actual   : $(result.value_actual)")
+    println(io, "  ├ value_expected : $(result.value_expected)")
+    println(io, "  ├ grad_actual    : $(result.grad_actual)")
+    println(io, "  ├ grad_expected  : $(result.grad_expected)")
+    if result.grad_time !== nothing && result.primal_time !== nothing
+        println(io, "  ├ grad_time      : $(result.grad_time) s")
+        println(io, "  ├ primal_time    : $(result.primal_time) s")
+    end
+    println(io, "  ├ model          : $(result.model.f)")
+    return println(io, "  └ params         : $(result.params)")
+end
 
 """
     run_ad(