Commit: patch 9.1.0776: test_strftime may fail because of missing TZ data

[Christian Brabandt]

patch 9.1.0776: test_strftime may fail because of missing TZ data

Commit: https://github.com/vim/vim/commit/ea997edc7aaa5bc1d645b57b6700e0b30c07acbd
Author: James McCoy <jame...@jamessan.com>
Date: Sat Oct 12 11:36:58 2024 +0200

patch 9.1.0776: test_strftime may fail because of missing TZ data

Problem: test_strftime may fail because of missing TZ data
Solution: Use GMT offsets to validate timezone differences (James McCoy)

Some systems only provide timezones that follow the geographical region
naming (e.g. America/New_York) by default and require an additional
install for other names (like EST).

The GMT+<offset> format must always be honored, so use that to generate
distinct data for the test.

closes: #15848

Signed-off-by: James McCoy <jame...@jamessan.com>
Signed-off-by: Christian Brabandt <c...@256bit.org>

diff --git a/src/testdir/test_functions.vim b/src/testdir/test_functions.vim
index 1021d0509..66b887608 100644
--- a/src/testdir/test_functions.vim
+++ b/src/testdir/test_functions.vim
@@ -277,17 +277,17 @@ func Test_strftime()
let tz = $TZ
endif

- " Force EST and then UTC, save the current hour (24-hour clock) for each
- let $TZ = 'EST' | let est = strftime('%H')
- let $TZ = 'UTC' | let utc = strftime('%H')
+ " Force different time zones, save the current hour (24-hour clock) for each
+ let $TZ = 'GMT+1' | let one = strftime('%H')
+ let $TZ = 'GMT+2' | let two = strftime('%H')

" Those hours should be two bytes long, and should not be the same; if they
" are, a tzset(3) call may have failed somewhere
- call assert_equal(strlen(est), 2)
- call assert_equal(strlen(utc), 2)
+ call assert_equal(strlen(one), 2)
+ call assert_equal(strlen(two), 2)
" TODO: this fails on MS-Windows
if has('unix')
- call assert_notequal(est, utc)
+ call assert_notequal(one, two)
endif

" If we cached a timezone value, put it back, otherwise clear it
diff --git a/src/version.c b/src/version.c
index 01acbe71d..5dbd50044 100644
--- a/src/version.c
+++ b/src/version.c
@@ -704,6 +704,8 @@ static char *(features[]) =

static int included_patches[] =
{ /* Add new patch number below this line */
+/**/
+ 776,
/**/
775,
/**/