diff --git a/stdlib/Test/test/runtests.jl b/stdlib/Test/test/runtests.jl
index 41688cc9aa7324..758de92a953c02 100644
--- a/stdlib/Test/test/runtests.jl
+++ b/stdlib/Test/test/runtests.jl
@@ -491,12 +491,19 @@ end
 
 # test @inferred
 function uninferrable_function(i)
-    q = [1, "1"]
+    q = (1, "1")
     return q[i]
 end
-
 @test_throws ErrorException @inferred(uninferrable_function(1))
 @test @inferred(identity(1)) == 1
+function uninferrable_small_union(i)
+    q = (1, nothing)
+    return q[i]
+end
+@test @inferred(uninferrable_small_union(1), Nothing) === 1
+@test @inferred(uninferrable_small_union(2), Nothing) === nothing
+@test_throws ErrorException @inferred(uninferrable_small_union(1), Missing)
+@test_throws ErrorException @inferred(uninferrable_small_union(2), Missing)
 
 # Ensure @inferred only evaluates the arguments once
 inferred_test_global = 0