From ac23dca426a6132300b9b21ce412c2845e0fdc50 Mon Sep 17 00:00:00 2001
From: Anish Bhobe <anish.bhobe@ip-paris.fr>
Date: Thu, 16 Mar 2023 15:53:43 +0100
Subject: [PATCH] tests/date: Added tests for date ISO8601 formats.

Regex matching for correctness check.
Tests for format with `minute`, `hour` and `date` added.
---
 tests/by-util/test_date.rs | 57 ++++++++++++++++++++++++++++++++++++--
 1 file changed, 55 insertions(+), 2 deletions(-)

diff --git a/tests/by-util/test_date.rs b/tests/by-util/test_date.rs
index a1064a8faa..bedbc959dc 100644
--- a/tests/by-util/test_date.rs
+++ b/tests/by-util/test_date.rs
@@ -45,15 +45,68 @@ fn test_date_rfc_3339() {
 
 #[test]
 fn test_date_rfc_8601() {
+    let re = Regex::new(r"^\d{4}-\d{2}-\d{2}T\d{2}:\d{2}:\d{2},\d{9}[+-]\d{2}:\d{2}\n$").unwrap();
     for param in ["--iso-8601", "--i"] {
-        new_ucmd!().arg(format!("{param}=ns")).succeeds();
+        new_ucmd!()
+            .arg(format!("{param}=ns"))
+            .succeeds()
+            .stdout_matches(&re);
     }
 }
 
 #[test]
 fn test_date_rfc_8601_second() {
+    let re = Regex::new(r"^\d{4}-\d{2}-\d{2}T\d{2}:\d{2}:\d{2}[+-]\d{2}:\d{2}\n$").unwrap();
     for param in ["--iso-8601", "--i"] {
-        new_ucmd!().arg(format!("{param}=second")).succeeds();
+        new_ucmd!()
+            .arg(format!("{param}=second"))
+            .succeeds()
+            .stdout_matches(&re);
+        new_ucmd!()
+            .arg(format!("{param}=seconds"))
+            .succeeds()
+            .stdout_matches(&re);
+    }
+}
+
+#[test]
+fn test_date_rfc_8601_minute() {
+    let re = Regex::new(r"^\d{4}-\d{2}-\d{2}T\d{2}:\d{2}[+-]\d{2}:\d{2}\n$").unwrap();
+    for param in ["--iso-8601", "--i"] {
+        new_ucmd!()
+            .arg(format!("{param}=minute"))
+            .succeeds()
+            .stdout_matches(&re);
+        new_ucmd!()
+            .arg(format!("{param}=minutes"))
+            .succeeds()
+            .stdout_matches(&re);
+    }
+}
+
+#[test]
+fn test_date_rfc_8601_hour() {
+    let re = Regex::new(r"^\d{4}-\d{2}-\d{2}T\d{2}[+-]\d{2}:\d{2}\n$").unwrap();
+    for param in ["--iso-8601", "--i"] {
+        new_ucmd!()
+            .arg(format!("{param}=hour"))
+            .succeeds()
+            .stdout_matches(&re);
+        new_ucmd!()
+            .arg(format!("{param}=hours"))
+            .succeeds()
+            .stdout_matches(&re);
+    }
+}
+
+#[test]
+fn test_date_rfc_8601_date() {
+    let re = Regex::new(r"^\d{4}-\d{2}-\d{2}\n$").unwrap();
+    for param in ["--iso-8601", "--i"] {
+        new_ucmd!()
+            .arg(format!("{param}=date"))
+            .succeeds()
+            .stdout_matches(&re);
     }
 }