From 2416684015948ec02a77d79901429c468f1c0e34 Mon Sep 17 00:00:00 2001
From: Richard Russon <rich@flatcap.org>
Date: Thu, 30 May 2019 10:34:25 +0100
Subject: [PATCH] test: improve test_mutt_date_parse_imap()

---
 test/date/mutt_date_parse_imap.c | 31 +++++++++++++++++++++++++++++++
 1 file changed, 31 insertions(+)

diff --git a/test/date/mutt_date_parse_imap.c b/test/date/mutt_date_parse_imap.c
index 1bf1880dc..3110cba6e 100644
--- a/test/date/mutt_date_parse_imap.c
+++ b/test/date/mutt_date_parse_imap.c
@@ -25,6 +25,12 @@
 #include "config.h"
 #include "mutt/mutt.h"
 
+struct ParseImapTest
+{
+  const char *str;
+  time_t expected;
+};
+
 void test_mutt_date_parse_imap(void)
 {
   // time_t mutt_date_parse_imap(const char *s);
@@ -32,4 +38,29 @@ void test_mutt_date_parse_imap(void)
   {
     TEST_CHECK(mutt_date_parse_imap(NULL) == 0);
   }
+
+  // clang-format off
+  static struct ParseImapTest imap_tests[] = {
+    // DD-MMM-YYYY HH:MM:SS +ZZzz
+    { "12-Jan-1999 12:34:56 +0100", 916140896 },
+    { " 2-Jan-1999 12:34:56 +0100", 915276896 },
+    { "02-Jan-1999 12:34:56 +0100", 915276896 },
+    { "12 Jan-1999 12:34:56 +0100", 0         },
+    { "12-Jan 1999 12:34:56 +0100", 0         },
+    { "12-Jan-1999-12:34:56 +0100", 0         },
+    { "12-Jan-1999 12.34:56 +0100", 0         },
+    { "12-Jan-1999 12:34.56 +0100", 0         },
+    { "12-Jan-1999 12:34:56-+0100", 0         },
+  };
+  // clang-format on
+
+  {
+    for (size_t i = 0; i < mutt_array_size(imap_tests); i++)
+    {
+      TEST_CASE(imap_tests[i]);
+      time_t result = mutt_date_parse_imap(imap_tests[i].str);
+      if (!TEST_CHECK(result == imap_tests[i].expected))
+        TEST_MSG("Expected: %ld, Got: %ld", imap_tests[i].expected, result);
+    }
+  }
 }
-- 
2.40.0