Add failing example.

Author: kaj

examples/simple/src/main.rs

@@ -338,3 +338,11 @@ fn lifetimes2() {
         "\n  <p>foo</p>\n\n  <p>bar</p>\n\n",
     );
 }
+
+#[test]
+fn test_list_join() {
+    assert_eq!(
+        r2s(|o| list_joins_html(o, &[2, 3, 7])),
+        "<p>Items: 2, 3, 7.</p>\n",
+    )
+}

examples/simple/templates/list_joins.rs.html

@@ -0,0 +1,6 @@
+@use super::{number_item_html, JoinHtml, JoinToHtml};
+
+@(items: &[u8])
+
+<p>Items: @items.iter().join_to_html(", ").</p>
+<p>Items: @items.iter().cloned().join_html(number_item_html, ", ").</p>

examples/simple/templates/number_item.rs.html

@@ -0,0 +1,2 @@
+@(item: u8)
+#@item