From 8838071d10d1dc85bd9a08b74235ad22593e0e95 Mon Sep 17 00:00:00 2001
From: Ian Jackson <ijackson@chiark.greenend.org.uk>
Date: Sat, 10 Jul 2021 15:53:35 +0100
Subject: [PATCH] zcoord: test iter()

Signed-off-by: Ian Jackson <ijackson@chiark.greenend.org.uk>
---
 base/zcoord.rs | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/base/zcoord.rs b/base/zcoord.rs
index 610b5ce5..37b38505 100644
--- a/base/zcoord.rs
+++ b/base/zcoord.rs
@@ -884,7 +884,13 @@ mod test {
 
   #[test]
   fn iter() {
-    
+    let mut m = mk("000000000a").iter(Increment);
+    assert_eq!( m.next(), Some(bf("000100000a")) );
+    assert_eq!( m.next(), Some(bf("000200000a")) );
+
+    let mut m = mk("000000000a").iter(Decrement);
+    assert_eq!( m.next(), Some(bf("0000000009_vvvvvvvvvv_vvvuvvvvvv")) );
+    assert_eq!( m.next(), Some(bf("0000000009_vvvvvvvvvv_vvvtvvvvvv")) );
   }
 
   #[test]
-- 
2.30.2