From f75fa16413935607c0a3a57134df2d08def2fb4a Mon Sep 17 00:00:00 2001
From: c <c@farsight.net>
Date: Wed, 18 Jun 2025 11:58:03 +0200
Subject: [PATCH] test: date folding whitespace

---
 src/parsers/fields/date.rs | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/src/parsers/fields/date.rs b/src/parsers/fields/date.rs
index 51925a1..5a2ffed 100644
--- a/src/parsers/fields/date.rs
+++ b/src/parsers/fields/date.rs
@@ -499,6 +499,17 @@ mod tests {
             let datetime = MessageStream::new(test.header.as_bytes())
                 .parse_date()
                 .into_datetime();
+
+            if let Some(datetime) = &datetime {
+                if datetime.is_valid() {
+                    let folding_ws = datetime.to_rfc822().replace(" ", " \t\r\n\t  ");
+                    let dt = MessageStream::new(folding_ws.as_bytes())
+                        .parse_date()
+                        .into_datetime();
+                    assert_eq!(Some(datetime), dt.as_ref(), "{}", &test.header);
+                }
+            }
+
             assert_eq!(datetime, test.expected, "failed for {:?}", test.header);
 
             match datetime {