diff --git a/tests/testsuite/config.rs b/tests/testsuite/config.rs
index 4e334d61555..e86389b39bd 100644
--- a/tests/testsuite/config.rs
+++ b/tests/testsuite/config.rs
@@ -272,6 +272,10 @@ f1 = 1
     let config = new_config();
 
     assert_eq!(config.get::<Option<i32>>("foo.f1").unwrap(), Some(1));
+
+    // It should NOT have warned for the symlink.
+    let output = read_output(config);
+    assert_eq!(output, "");
 }
 
 #[cargo_test]