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authorRon Yorston <rmy@pobox.com>2021-09-16 10:26:14 +0100
committerDenys Vlasenko <vda.linux@googlemail.com>2021-09-17 00:11:30 +0200
commit9fe1548bbfde548d54acaab113656a56ea0ccc72 (patch)
treebabe79b4f502417ca91a8fab3099f29ff718de19 /testsuite
parent83e20cb81ca6d22a1ca268a0a64523b5af67325a (diff)
date,touch: allow timezone offsets in dates
Allow ISO 8601 style dates to include a timezone offset. Like the '@' format these dates aren't relative to the user's current timezone and shouldn't be subject to DST adjustment. - The implementation uses the strptime() '%z' format specifier. This an extension which may not be available so the use of timezones is a configuration option. - The 'touch' applet has been updated to respect whether DST adjustment is required, matching 'date'. function old new delta parse_datestr 624 730 +106 static.fmt_str 106 136 +30 touch_main 388 392 +4 date_main 818 819 +1 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 4/0 up/down: 141/0) Total: 141 bytes Signed-off-by: Ron Yorston <rmy@pobox.com> Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Diffstat (limited to 'testsuite')
-rw-r--r--testsuite/date/date-timezone32
1 files changed, 32 insertions, 0 deletions
diff --git a/testsuite/date/date-timezone b/testsuite/date/date-timezone
new file mode 100644
index 000000000..8628aa1d7
--- /dev/null
+++ b/testsuite/date/date-timezone
@@ -0,0 +1,32 @@
+# FEATURE: CONFIG_FEATURE_TIMEZONE
+
+# 'Z' is UTC
+dt=$(TZ=UTC0 busybox date -d '1999-1-2 3:4:5Z')
+dt=$(echo "$dt" | cut -b1-19)
+test x"$dt" = x"Sat Jan 2 03:04:05"
+
+# '+0600' is six hours ahead of UTC
+dt=$(TZ=UTC0 busybox date -d '1999-1-2 3:4:5 +0600')
+dt=$(echo "$dt" | cut -b1-19)
+test x"$dt" = x"Fri Jan 1 21:04:05"
+
+# '-0600' is six hours behind UTC
+dt=$(TZ=UTC0 busybox date -d '1999-1-2 3:4:5 -0600')
+dt=$(echo "$dt" | cut -b1-19)
+test x"$dt" = x"Sat Jan 2 09:04:05"
+
+# before dst is switched on
+dt=$(TZ=GMT0BST,M3.5.0/1,M10.5.0/2 busybox date -d '2021-03-28 00:59:59 +0000')
+test x"$dt" = x"Sun Mar 28 00:59:59 GMT 2021"
+
+# after dst is switched on
+dt=$(TZ=GMT0BST,M3.5.0/1,M10.5.0/2 busybox date -d '2021-03-28 01:00:01 +0000')
+test x"$dt" = x"Sun Mar 28 02:00:01 BST 2021"
+
+# before dst is switched off
+dt=$(TZ=GMT0BST,M3.5.0/1,M10.5.0/2 busybox date -d '2021-10-31 00:00:01 +0000')
+test x"$dt" = x"Sun Oct 31 01:00:01 BST 2021"
+
+# after dst is switched off: back to 01:00:01 but with different TZ
+dt=$(TZ=GMT0BST,M3.5.0/1,M10.5.0/2 busybox date -d '2021-10-31 01:00:01 +0000')
+test x"$dt" = x"Sun Oct 31 01:00:01 GMT 2021"