[PATCH v16 09/10] tests: Fix timezone inconsistency in squashfs_test

[Xiaotian Wu]

The image timestamp was not returned in UTC, but the following logic
expected and used UTC.

This patch fixes the test failure like described below:

  unsquashfs -s 
/tmp/grub-fs-tester.20230407111703613257436.squash4_gzip.9R4/squash4_gzip_512_4096_1_0.img
  grep '^Creation'
  awk '{print $6 " " $7 " " $8 " " $9 " " $10; }'
  FSTIME='Fri Apr 7 11:17:05 2023'
  date -d 'Fri Apr 7 11:17:05 2023' -u '+%Y-%m-%d %H:%M:%S'
  FSTIME='2023-04-07 11:17:05'
  date -d '2023-04-07 11:17:05 UTC -1 second' -u '+%Y-%m-%d %H:%M:%S'
  FSTIMEM1='2023-04-07 11:17:04'
  date -d '2023-04-07 11:17:05 UTC -2 second' -u '+%Y-%m-%d %H:%M:%S'
  FSTIMEM2='2023-04-07 11:17:03'
  date -d '2023-04-07 11:17:05 UTC -3 second' -u '+%Y-%m-%d %H:%M:%S'
  FSTIMEM3='2023-04-07 11:17:02'
  grep -F 'Last modification time 2023-04-07 11:17:05'
  echo 'Device loop0: Filesystem type squash4 - Last modification time 
2023-04-07 03:17:05 Friday - Sector size 512B - Total size 10680KiB'
  echo 'Device loop0: Filesystem type squash4 - Last modification time 
2023-04-07 03:17:05 Friday - Sector size 512B - Total size 10680KiB'
  grep -F 'Last modification time 2023-04-07 11:17:04'
  echo 'Device loop0: Filesystem type squash4 - Last modification time 
2023-04-07 03:17:05 Friday - Sector size 512B - Total size 10680KiB'
  grep -F 'Last modification time 2023-04-07 11:17:03'
  echo 'Device loop0: Filesystem type squash4 - Last modification time 
2023-04-07 03:17:05 Friday - Sector size 512B - Total size 10680KiB'
  grep -F 'Last modification time 2023-04-07 11:17:02'
  echo FSTIME FAIL

Signed-off-by: Xiaotian Wu <wuxiaotian@loongson.cn>
Reviewed-by: Glenn Washburn <development@efficientek.com>
---
 tests/util/grub-fs-tester.in | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tests/util/grub-fs-tester.in b/tests/util/grub-fs-tester.in
index 9cc6b5811..1030098b4 100644
--- a/tests/util/grub-fs-tester.in
+++ b/tests/util/grub-fs-tester.in
@@ -1454,7 +1454,7 @@ for LOGSECSIZE in $(range "$MINLOGSECSIZE" 
"$MAXLOGSECSIZE" 1); do
                        # Creating the squash image may take more than a few
                        # seconds. Use the more accurate timestamp from the
                        # superblock.
-                       FSTIME="$(unsquashfs -s "${FSIMAGEP}0.img" | grep 
^Creation | awk '{print $6 " " $7 " " $8 " " $9 " " $10; }')"
+                       FSTIME="$(unsquashfs -UTC -s "${FSIMAGEP}0.img" | grep 
^Creation | awk '{print $6 " " $7 " " $8 " " $9 " " $10; }')"
                        FSTIME="$(date -d "$FSTIME" -u '+%Y-%m-%d %H:%M:%S')";;
                    *)
                        FSTIME="$(TZ=UTC ls --time-style="+%Y-%m-%d_%H:%M:%S" 
-l -d "${FSIMAGEP}0.img"|awk '{print $6; }'|sed 's,_, ,g')";;
-- 
2.40.0