Add tests for custom url scheme

Author: Keats

components/rendering/tests/markdown.rs

@@ -819,3 +819,15 @@ fn doesnt_try_to_highlight_content_from_shortcode() {
 //    let res = render_content(markdown_string, &context).unwrap();
 //    assert_eq!(res.body, expected);
 //}
+
+
+// https://github.com/getzola/zola/issues/747
+#[test]
+fn leaves_custom_url_scheme_untouched() {
+    let tera_ctx = Tera::default();
+    let permalinks_ctx = HashMap::new();
+    let config = Config::default();
+    let context = RenderContext::new(&tera_ctx, &config, "", &permalinks_ctx, InsertAnchor::None);
+    let res = render_content("[[email protected]](xmpp:[email protected])", &context).unwrap();
+    assert_eq!(res.body, "<p><a href=\"xmpp:[email protected]\">[email protected]</a></p>\n");
+}