From f0b4955b96225131de25d24213ea06f67abf3821 Mon Sep 17 00:00:00 2001
From: Paul Dicker <paul@pitdicker.nl>
Date: Fri, 9 Jun 2023 20:16:04 +0200
Subject: [PATCH] Test ISO 8601 parser can parse `Debug` output

---
 src/datetime/tests.rs       | 9 +++++++++
 src/naive/datetime/tests.rs | 9 +++++++++
 2 files changed, 18 insertions(+)

diff --git a/src/datetime/tests.rs b/src/datetime/tests.rs
index ad172ee4a7..b3abfd9100 100644
--- a/src/datetime/tests.rs
+++ b/src/datetime/tests.rs
@@ -1085,3 +1085,12 @@ fn test_parse_from_iso8601() {
     );
     assert_eq!(parse("1985102T2350,5+01"), Ok(datetime(1985, 4, 12, 23, 50, 30, 0, 3600)));
 }
+
+#[test]
+fn test_iso8601_parses_debug() {
+    let parse = |s| DateTime::<FixedOffset>::parse_from_iso8601(s).map(|(dt, _)| dt);
+
+    let dt = FixedOffset::east_opt(3600).unwrap().with_ymd_and_hms(12345, 6, 7, 8, 9, 10).unwrap();
+    let debug = format!("{:?}", dt);
+    assert_eq!(parse(&debug), Ok(dt));
+}
diff --git a/src/naive/datetime/tests.rs b/src/naive/datetime/tests.rs
index 4bcaae7a5c..6de44a0e25 100644
--- a/src/naive/datetime/tests.rs
+++ b/src/naive/datetime/tests.rs
@@ -387,3 +387,12 @@ fn test_parse_from_iso8601() {
     // Test 24:00:00 wraps to the next day
     assert_eq!(parse("2023-06-09T24:00:00"), Ok(datetime(2023, 6, 10, 0, 0, 0, 0)));
 }
+
+#[test]
+fn test_iso8601_parses_debug() {
+    let parse = |s| NaiveDateTime::parse_from_iso8601(s).map(|(dt, _)| dt);
+
+    let dt = NaiveDate::from_ymd_opt(12345, 6, 7).unwrap().and_hms_nano_opt(8, 9, 10, 11).unwrap();
+    let debug = format!("{:?}", dt);
+    assert_eq!(parse(&debug), Ok(dt));
+}