test_unbound_args: add a functionality to ignore specific methods

src/unbound_args.jl

@@ -9,9 +9,17 @@ of the method.
 # Keyword Arguments
 - `broken::Bool = false`: If true, it uses `@test_broken` instead of
   `@test` and shortens the error message.
+- `exclude::AbstractVector = []`: A vector of signatures of methods to exclude
+  from testing. A signature is usually of the form `Tuple{typeof(f), T1, T2, ...}`.
+  where `f` is the function and `T1, T2, ...` the type parameters. For example, the
+  signature of `f(x::Float64, y)` is `Tuple{typeof(f), Float64, Any}`.
 """
-function test_unbound_args(m::Module; broken::Bool = false)
+function test_unbound_args(m::Module; broken::Bool = false, exclude = [])
     unbounds = detect_unbound_args_recursively(m)
+    for signature in exclude
+        filter!(method -> (method.sig != signature), unbounds)
+    end
+
     if broken
         if !isempty(unbounds)
             printstyled(

test/pkgs/PkgUnboundArgs.jl

@@ -7,4 +7,18 @@ end
 # `_totuple` is taken from
 # https://github.com/JuliaLang/julia/blob/48634f9f8669e1dc1be0a1589cd5be880c04055a/test/ambiguous.jl#L257-L259
 
+# taken from https://github.com/JuliaTesting/Aqua.jl/issues/86
+module Issue86
+f(::NTuple{N,T}) where {N,T} = (N, T)
+f(::Tuple{}) = (0, Any)
+end
+
+module ExcludeCallableObject
+struct Callable{U}
+    s::U
+end
+
+(::Callable{U})(::NTuple{N,T}) where {N,T,U} = (N, T, U)
+(::Callable{U})(::Tuple{}) where {U} = (0, Any, U)
+end
 end  # module

test/test_unbound_args.jl

@@ -13,6 +13,20 @@ using PkgUnboundArgs
     @test length(results) == 1
     @test results[1] isa Test.Fail
 
+    Aqua.test_unbound_args(
+        PkgUnboundArgs,
+        exclude = [
+            Tuple{
+                typeof(PkgUnboundArgs.M25341._totuple),
+                Type{Tuple{Vararg{E}}} where E,
+                Any,
+                Vararg{Any},
+            },
+            Tuple{typeof(PkgUnboundArgs.Issue86.f),NTuple},
+            Tuple{PkgUnboundArgs.ExcludeCallableObject.Callable,NTuple},
+        ],
+    )
+
     # It works with other tests:
     Aqua.test_ambiguities(PkgUnboundArgs)
     Aqua.test_undefined_exports(PkgUnboundArgs)