disks/zfs: fix test input and enforce check for config key

we test for the config key in the API so it makes sense to have as
test here too. Actually it would be better if we'd have a expect
Value defined here and enforce that it matches, but better than
nothing.

Fix the input for test 1, where tabs got replaced by spaces, as else
it fails

Signed-off-by: Thomas Lamprecht <t.lamprecht@proxmox.com>

src/tools/disks/zpool_status.rs

@@ -372,14 +372,20 @@ pub fn zpool_status(pool: &str) -> Result<Vec<(String, String)>, Error> {
 
 #[cfg(test)]
 fn test_parse(output: &str) -> Result<(), Error> {
+    let mut found_config = false;
+
     for (k, v) in parse_zpool_status(&output)? {
-        println!("{} => {}", k,v);
+        println!("<{}> => '{}'", k, v);
         if k == "config" {
             let vdev_list = parse_zpool_status_config_tree(&v)?;
             let _tree = vdev_list_to_tree(&vdev_list);
             found_config = true;
         }
     }
+    if !found_config {
+        bail!("got zpool status without config key");
+    }
+
     Ok(())
 }