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Use the enhanced SQLITE_TESTCTRL_LOCALTIME_FAULT (2) capability to do better
testing of the 'localtime' and 'utc' modifiers to date/time functions. FossilOrigin-Name: f38071946ac2e5bb61e6c0620507e4c94464999ac700d86c1a704b94eb1c009a
This commit is contained in:
drh
180
test/date.test
180
test/date.test
@ -239,138 +239,70 @@ datetest 5.13 {datetime('1994-04-16 14:00:00Zulu')} NULL
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datetest 5.14 {datetime('1994-04-16 14:00:00Z +05:00')} NULL
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datetest 5.15 {datetime('1994-04-16 14:00:00 +05:00 Z')} NULL
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# localtime->utc and utc->localtime conversions. These tests only work
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# if the localtime is in the US Eastern Time (the time in Charlotte, NC
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# and in New York.)
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# localtime->utc and utc->localtime conversions.
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#
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# On non-Vista Windows platform, '2006-03-31' is treated incorrectly as being
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# in DST giving a 4 hour offset instead of 5. In 2007, DST was extended to
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# start three weeks earlier (second Sunday in March) and end one week
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# later (first Sunday in November). Older Windows systems apply this
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# new rule incorrectly to dates prior to 2007.
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# Use SQLITE_TESTCTRL_LOCALTIME_FAULT=2 to set an alternative localtime_r()
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# implementation that is not locale-dependent. This testing localtime_r()
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# operates as follows:
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#
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# It might be argued that this is masking a problem on non-Vista Windows
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# platform. A ticket has already been opened for this issue
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# (http://www.sqlite.org/cvstrac/tktview?tn=2322). This is just to prevent
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# more confusion/reports of the issue.
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# (1) Localtime is 30 minutes earlier than (west of) UTC on
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# even days (counting from 1970-01-01)
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#
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# $tzoffset_old should be 5 if DST is working correctly.
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set tzoffset_old [db one {
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SELECT CAST(24*(julianday('2006-03-31') -
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julianday('2006-03-31','localtime'))+0.5
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AS INT)
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}]
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# $tzoffset_new should be 4 if DST is working correctly.
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set tzoffset_new [db one {
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SELECT CAST(24*(julianday('2007-03-31') -
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julianday('2007-03-31','localtime'))+0.5
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AS INT)
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}]
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# Warn about possibly broken Windows DST implementations.
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if {$::tcl_platform(platform)=="windows" && $tzoffset_new==4 && $tzoffset_old==4} {
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puts "******************************************************************"
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puts "N.B.: The DST support provided by your current O/S seems to be"
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puts "suspect in that it is reporting incorrect DST values for dates"
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puts "prior to 2007. This is the known case for most (all?) non-Vista"
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puts "Windows versions. Please see ticket #2322 for more information."
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puts "******************************************************************"
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# (2) Localtime is 30 minutes later than (east of) UTC on odd days.
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#
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# (3) The function fails for the specific date/time value
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# of 2000-05-29 14:16:00 in order to test the ability of
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# SQLite to deal with localtime_r() failures.
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#
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proc local_to_utc {tn utc local} {
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do_execsql_test date-$tn "SELECT datetime('$utc','localtime')" [list $local]
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}
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proc utc_to_local {tn local utc} {
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do_execsql_test date-$tn "SELECT datetime('$local','utc')" [list $utc]
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}
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if {$tzoffset_new==4} {
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datetest 6.1 {datetime('2000-10-29 05:59:00','localtime')}\
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{2000-10-29 01:59:00}
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datetest 6.1.1 {datetime('2006-10-29 05:59:00','localtime')}\
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{2006-10-29 01:59:00}
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datetest 6.1.2 {datetime('2007-11-04 05:59:00','localtime')}\
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{2007-11-04 01:59:00}
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sqlite3_test_control SQLITE_TESTCTRL_LOCALTIME_FAULT 2
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local_to_utc 6.1 {2000-10-29 12:00:00} {2000-10-29 12:30:00}
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utc_to_local 6.2 {2000-10-29 12:30:00} {2000-10-29 12:00:00}
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local_to_utc 6.3 {2000-10-30 12:00:00} {2000-10-30 11:30:00}
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utc_to_local 6.4 {2000-10-30 11:30:00} {2000-10-30 12:00:00}
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# If the new and old DST rules seem to be working correctly...
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if {$tzoffset_new==4 && $tzoffset_old==5} {
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datetest 6.2 {datetime('2000-10-29 06:00:00','localtime')}\
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{2000-10-29 01:00:00}
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datetest 6.2.1 {datetime('2006-10-29 06:00:00','localtime')}\
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{2006-10-29 01:00:00}
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}
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datetest 6.2.2 {datetime('2007-11-04 06:00:00','localtime')}\
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{2007-11-04 01:00:00}
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local_to_utc 6.5 {2000-10-28 23:59:59} {2000-10-28 23:29:59}
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local_to_utc 6.6 {2000-10-29 00:00:00} {2000-10-29 00:30:00}
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# If the new and old DST rules seem to be working correctly...
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if {$tzoffset_new==4 && $tzoffset_old==5} {
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datetest 6.3 {datetime('2000-04-02 06:59:00','localtime')}\
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{2000-04-02 01:59:00}
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datetest 6.3.1 {datetime('2006-04-02 06:59:00','localtime')}\
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{2006-04-02 01:59:00}
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}
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datetest 6.3.2 {datetime('2007-03-11 07:00:00','localtime')}\
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{2007-03-11 03:00:00}
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datetest 6.4 {datetime('2000-04-02 07:00:00','localtime')}\
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{2000-04-02 03:00:00}
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datetest 6.4.1 {datetime('2006-04-02 07:00:00','localtime')}\
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{2006-04-02 03:00:00}
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datetest 6.4.2 {datetime('2007-03-11 07:00:00','localtime')}\
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{2007-03-11 03:00:00}
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datetest 6.5 {datetime('2000-10-29 01:59:00','utc')} {2000-10-29 05:59:00}
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datetest 6.5.1 {datetime('2006-10-29 01:59:00','utc')} {2006-10-29 05:59:00}
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datetest 6.5.2 {datetime('2007-11-04 01:59:00','utc')} {2007-11-04 05:59:00}
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# If the new and old DST rules seem to be working correctly...
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if {$tzoffset_new==4 && $tzoffset_old==5} {
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datetest 6.6 {datetime('2000-10-29 02:00:00','utc')} {2000-10-29 07:00:00}
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datetest 6.6.1 {datetime('2006-10-29 02:00:00','utc')} {2006-10-29 07:00:00}
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}
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datetest 6.6.2 {datetime('2007-11-04 02:00:00','utc')} {2007-11-04 07:00:00}
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# If the new and old DST rules seem to be working correctly...
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if {$tzoffset_new==4 && $tzoffset_old==5} {
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datetest 6.7 {datetime('2000-04-02 01:59:00','utc')} {2000-04-02 06:59:00}
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datetest 6.7.1 {datetime('2006-04-02 01:59:00','utc')} {2006-04-02 06:59:00}
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}
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datetest 6.7.2 {datetime('2007-03-11 01:59:00','utc')} {2007-03-11 06:59:00}
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datetest 6.8 {datetime('2000-04-02 02:00:00','utc')} {2000-04-02 07:00:00}
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datetest 6.8.1 {datetime('2006-04-02 02:00:00','utc')} {2006-04-02 07:00:00}
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datetest 6.8.2 {datetime('2007-03-11 02:00:00','utc')} {2007-03-11 07:00:00}
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# The 'utc' modifier is a no-op if the LHS is known to already be in UTC
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datetest 6.9.1 {datetime('2015-12-23 12:00:00','utc')} {2015-12-23 17:00:00}
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datetest 6.9.2 {datetime('2015-12-23 12:00:00z','utc')} {2015-12-23 12:00:00}
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datetest 6.9.3 {datetime('2015-12-23 12:00:00-03:00','utc')} \
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{2015-12-23 15:00:00}
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datetest 6.9.4 {datetime('2015-12-23 12:00:00','utc','utc','utc')} \
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{2015-12-23 17:00:00}
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datetest 6.10 {datetime('2000-01-01 12:00:00','localtime')} \
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{2000-01-01 07:00:00}
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datetest 6.11 {datetime('1969-01-01 12:00:00','localtime')} \
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{1969-01-01 07:00:00}
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datetest 6.12 {datetime('2039-01-01 12:00:00','localtime')} \
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{2039-01-01 07:00:00}
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datetest 6.13 {datetime('2000-07-01 12:00:00','localtime')} \
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{2000-07-01 08:00:00}
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datetest 6.14 {datetime('1969-11-01 12:00:00','localtime')} \
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{1969-11-01 07:00:00}
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datetest 6.15 {datetime('2039-02-01 12:00:00','localtime')} \
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{2039-02-01 07:00:00}
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set sqlite_current_time \
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[db eval {SELECT strftime('%s','2000-07-01 12:34:56')}]
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datetest 6.16 {datetime('now','localtime')} {2000-07-01 08:34:56}
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datetest 6.17 {datetime('now','localtimex')} NULL
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datetest 6.18 {datetime('now','localtim')} NULL
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set sqlite_current_time 0
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}
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# These two are a bit of a scam. They are added to ensure that 100% of
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# the date.c file is covered by testing, even when the time-zone
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# is not -0400 (the condition for running of the block of tests above).
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# The previous two cases establish that no such localtime as
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# 2000-10-29 00:10:00 exists. Verify that we get a reasonable
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# answer if we try to convert this non-existant localtime to utc?
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#
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datetest 6.19 {datetime('2039-07-01 12:00:00','localtime',null)} NULL
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datetest 6.20 {datetime('2039-07-01 12:00:00','utc',null)} NULL
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utc_to_local 6.7 {2000-10-29 00:10:00} {2000-10-28 23:40:00}
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local_to_utc 6.8 {2022-02-10 23:59:59} {2022-02-11 00:29:59}
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local_to_utc 6.9 {2022-02-11 00:00:00} {2022-02-10 23:30:00}
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local_to_utc 6.10 {2022-02-10 23:45:00} {2022-02-11 00:15:00}
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local_to_utc 6.11 {2022-02-11 00:45:00} {2022-02-11 00:15:00}
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# The previous two cases show that two different UTC values give
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# the same localtime of 2022-02-11 00:15:00. When converting from
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# that localtime back to UTC, we should get one or the other of
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# the two UTC values.
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#
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utc_to_local 6.12 {2022-02-11 00:15:00} {2022-02-11 00:45:00}
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# If localtime_r() fails, the datetime() SQL function should raise an error
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#
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do_catchsql_test date-6.20 {
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SELECT datetime('2000-05-29 14:16:00','localtime');
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} {1 {local time unavailable}}
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# Modifiers work for dates that are way out of band for localtime_r()
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#
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local_to_utc 6.21 {1800-10-29 12:00:00} {1800-10-29 12:30:00}
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utc_to_local 6.22 {1800-10-29 12:30:00} {1800-10-29 12:00:00}
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local_to_utc 6.23 {3000-10-30 12:00:00} {3000-10-30 11:30:00}
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utc_to_local 6.24 {3000-10-30 11:30:00} {3000-10-30 12:00:00}
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# Restore the use of the OS localtime_r() before going on...
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sqlite3_test_control SQLITE_TESTCTRL_LOCALTIME_FAULT 0
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# Date-time functions that contain NULL arguments return a NULL
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# result.
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