still some issues

Author: molpopgen

tests/test_edge_difference_iteration.rs

@@ -71,10 +71,19 @@ fn test_collect_edge_diff_iterators() {
         }
     }
 
-    let removals = diffs.iter().map(|i| i.removals()).collect::<Vec<_>>();
+    let removals = {
+        let mut r = vec![];
+        for d in diffs.iter() {
+            for di in d.removals() {
+                r.push(di);
+            }
+        }
+        r
+    };
     let insertions = diffs.iter().map(|i| i.insertions()).collect::<Vec<_>>();
 
     let removal_order = ts.edge_removal_order();
+    assert_eq!(removals.len(), removal_order.len());
 
     for (i, j) in removals.iter().zip(removal_order.iter()) {
         assert_eq!(