Apply suggestions from code review

Co-authored-by: David Widmann <devmotion@users.noreply.github.com>

Author: gaurav-arya

Project.toml

@@ -13,7 +13,7 @@ Test = "8dfed614-e22c-5e08-85e1-65c5234f0b40"
 
 [extensions]
 AbstractFFTsChainRulesCoreExt = "ChainRulesCore"
-AbstractFFTsTestUtilsExt = "Test"
+AbstractFFTsTestExt = "Test"
 
 [compat]
 ChainRulesCore = "1"

src/TestUtils.jl

@@ -46,7 +46,7 @@ function __init__()
     if isdefined(Base, :Experimental)
         # Better error message if users forget to load Test
         Base.Experimental.register_error_hint(MethodError) do io, exc, _, _
-            if exc.f in (test_real_fft, test_complex_fft)
+            if (exc.f === test_real_fft || exc.f === test_complex_fft) && Base.get_extension(AbstractFFTs, :AbstractFFTsTestExt) === nothing
                 print(io, "\nDid you forget to load Test?")
             end
         end