sorting the flattened account structure by name

src/account.rs

@@ -173,8 +173,11 @@ impl Account {
     fn flatten<'a>(&'a self, nodes: &mut Vec<&'a Account>) {
         // Push the current node to the Vec
         nodes.push(self);
+        // 
+        let mut children: Vec<&Account> = self.accounts.values().into_iter().collect();
+        children.sort_unstable_by_key(|acc| &acc.name);
         // If the node has children, recursively call flatten on them
-        for (_name, child) in &self.accounts {
+        for child in children {
             child.flatten(nodes);
         }
     }

tests/accounts-tests.rs

@@ -17,9 +17,10 @@ fn test_creating_account_tree() {
     // Assert
     let accounts = journal.master.flatten_account_tree();
     assert_eq!(5, accounts.len());
-    assert_eq!("", accounts.iter().nth(0).unwrap().name);
-    assert_eq!("Expenses", accounts.iter().nth(1).unwrap().name);
-    assert_eq!("Food", accounts.iter().nth(2).unwrap().name);
-    assert_eq!("Assets", accounts.iter().nth(3).unwrap().name);
-    assert_eq!("Cash", accounts.iter().nth(4).unwrap().name);
+    let mut iterator = accounts.iter();
+    assert_eq!("", iterator.next().unwrap().name);
+    assert_eq!("Assets", iterator.next().unwrap().name);
+    assert_eq!("Cash", iterator.next().unwrap().name);
+    assert_eq!("Expenses", iterator.next().unwrap().name);
+    assert_eq!("Food", iterator.next().unwrap().name);
 }