diff --git a/tests/lang.sh b/tests/lang.sh
index dfe807a6d1..bb3b9ca775 100644
--- a/tests/lang.sh
+++ b/tests/lang.sh
@@ -2,6 +2,10 @@ source common.sh
 
 export TEST_VAR=foo # for eval-okay-getenv.nix
 
+nix-instantiate --eval -E 'builtins.trace "Hello" 123' 2>&1 | grep -q Hello
+! nix-instantiate --show-trace --eval -E 'builtins.addErrorContext "Hello" 123' 2>&1 | grep -q Hello
+nix-instantiate --show-trace --eval -E 'builtins.addErrorContext "Hello" (throw "Foo")' 2>&1 | grep -q Hello
+
 set +x
 
 fail=0