Nushell internal commands. Anchor locations tracker surveying. (#2635)

crates/nu-cli/src/commands/reduce.rs

@@ -185,11 +185,12 @@ async fn reduce(
 #[cfg(test)]
 mod tests {
     use super::Reduce;
+    use super::ShellError;
 
     #[test]
-    fn examples_work_as_expected() {
+    fn examples_work_as_expected() -> Result<(), ShellError> {
         use crate::examples::test as test_examples;
 
-        test_examples(Reduce {})
+        Ok(test_examples(Reduce {})?)
     }
 }