%%
%% %CopyrightBegin%
%%
%% Copyright Ericsson AB 1997-2010. All Rights Reserved.
%%
%% The contents of this file are subject to the Erlang Public License,
%% Version 1.1, (the "License"); you may not use this file except in
%% compliance with the License. You should have received a copy of the
%% Erlang Public License along with this software. If not, it can be
%% retrieved online at http://www.erlang.org/.
%%
%% Software distributed under the License is distributed on an "AS IS"
%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
%% the License for the specific language governing rights and limitations
%% under the License.
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%% %CopyrightEnd%
%%
-module(calendar_SUITE).
-include_lib("test_server/include/test_server.hrl").
-export([all/0, suite/0,groups/0,init_per_suite/1, end_per_suite/1,
init_per_group/2,end_per_group/2,
gregorian_days/1,
gregorian_seconds/1,
day_of_the_week/1,
day_of_the_week_calibrate/1,
leap_years/1,
last_day_of_the_month/1,
local_time_to_universal_time_dst/1,
iso_week_number/1]).
-define(START_YEAR, 1947).
-define(END_YEAR, 2012).
suite() -> [{ct_hooks,[ts_install_cth]}].
all() ->
[gregorian_days, gregorian_seconds, day_of_the_week,
day_of_the_week_calibrate, leap_years,
last_day_of_the_month, local_time_to_universal_time_dst, iso_week_number].
groups() ->
[].
init_per_suite(Config) ->
Config.
end_per_suite(_Config) ->
ok.
init_per_group(_GroupName, Config) ->
Config.
end_per_group(_GroupName, Config) ->
Config.
gregorian_days(doc) ->
"Tests that date_to_gregorian_days and gregorian_days_to_date "
"are each others inverses from ?START_YEAR-01-01 up to ?END_YEAR-01-01. "
"At the same time valid_date is tested.";
gregorian_days(suite) ->
[];
gregorian_days(Config) when is_list(Config) ->
?line Days = calendar:date_to_gregorian_days({?START_YEAR, 1, 1}),
?line MaxDays = calendar:date_to_gregorian_days({?END_YEAR, 1, 1}),
?line check_gregorian_days(Days, MaxDays).
gregorian_seconds(doc) ->
"Tests that datetime_to_gregorian_seconds and "
"gregorian_seconds_to_date are each others inverses for a sampled "
"number of seconds from ?START_YEAR-01-01 up to ?END_YEAR-01-01: We check "
"every 2 days + 1 second.";
gregorian_seconds(suite) ->
[];
gregorian_seconds(Config) when is_list(Config) ->
?line Secs = calendar:datetime_to_gregorian_seconds({{?START_YEAR, 1, 1},
{0, 0, 0}}),
?line MaxSecs = calendar:datetime_to_gregorian_seconds({{?END_YEAR, 1, 1},
{0, 0, 0}}),
?line check_gregorian_seconds(Secs, MaxSecs).
day_of_the_week(doc) ->
"Tests that day_of_the_week reports correctly the day of the week from "
"year ?START_YEAR up to ?END_YEAR.";
day_of_the_week(suite) ->
[];
day_of_the_week(Config) when is_list(Config) ->
?line Days = calendar:date_to_gregorian_days({?START_YEAR, 1, 1}),
?line MaxDays = calendar:date_to_gregorian_days({?END_YEAR, 1, 1}),
?line DayNumber = calendar:day_of_the_week({?START_YEAR, 1, 1}),
?line check_day_of_the_week(Days, MaxDays, DayNumber).
day_of_the_week_calibrate(doc) ->
"Tests that day_of_the_week for 1997-11-11 is Tuesday (2)";
day_of_the_week_calibrate(suite) ->
[];
day_of_the_week_calibrate(Config) when is_list(Config) ->
?line 2 = calendar:day_of_the_week({1997, 11, 11}).
leap_years(doc) ->
"Tests that is_leap_year reports correctly the leap years from "
"year ?START_YEAR up to ?END_YEAR.";
leap_years(suite) ->
[];
leap_years(Config) when is_list(Config) ->
?line check_leap_years(?START_YEAR, ?END_YEAR).
last_day_of_the_month(doc) ->
"Tests that last_day_of_the_month reports correctly from "
"year ?START_YEAR up to ?END_YEAR.";
last_day_of_the_month(suite) ->
[];
last_day_of_the_month(Config) when is_list(Config) ->
?line check_last_day_of_the_month({?START_YEAR, 1}, {?END_YEAR, 1}).
local_time_to_universal_time_dst(doc) ->
"Tests local_time_to_universal_time_dst for MET";
local_time_to_universal_time_dst(suite) ->
[];
local_time_to_universal_time_dst(Config) when is_list(Config) ->
case os:type() of
{unix,_} ->
case os:cmd("date '+%Z'") of
"SAST"++_ ->
{comment, "Spoky time zone with zero-set DST, skipped"};
_ ->
local_time_to_universal_time_dst_x(Config)
end;
_ ->
local_time_to_universal_time_dst_x(Config)
end.
local_time_to_universal_time_dst_x(Config) when is_list(Config) ->
%% Assumes MET (UTC+1 / UTC+2(dst)
?line LtW = {{2003,01,15},{14,00,00}}, % Winter
?line UtW = {{2003,01,15},{13,00,00}}, %
?line UtWd = {{2003,01,15},{12,00,00}}, % dst
?line LtS = {{2003,07,15},{14,00,00}}, % Summer
?line UtS = {{2003,07,15},{13,00,00}}, %
?line UtSd = {{2003,07,15},{12,00,00}}, % dst
?line LtWS = {{2003,03,30},{02,30,00}}, % Winter->Summer
?line UtWS = {{2003,03,30},{01,30,00}}, %
?line UtWSd = {{2003,03,30},{00,30,00}}, % dst
?line LtSW = {{2003,10,26},{02,30,00}}, % Summer->Winter
?line UtSW = {{2003,10,26},{01,30,00}}, %
?line UtSWd = {{2003,10,26},{00,30,00}}, % dst
%%
?line UtW = calendar:local_time_to_universal_time(LtW, false),
?line UtWd = calendar:local_time_to_universal_time(LtW, true),
?line UtW = calendar:local_time_to_universal_time(LtW, undefined),
%%
?line UtS = calendar:local_time_to_universal_time(LtS, false),
?line UtSd = calendar:local_time_to_universal_time(LtS, true),
?line UtSd = calendar:local_time_to_universal_time(LtS, undefined),
%%
case calendar:local_time_to_universal_time(LtWS, false) of
UtWS ->
?line UtWSd = calendar:local_time_to_universal_time(LtWS, true),
?line [] = calendar:local_time_to_universal_time_dst(LtWS),
%%
?line UtSW = calendar:local_time_to_universal_time(LtSW, false),
?line UtSWd = calendar:local_time_to_universal_time(LtSW, true),
?line [UtSWd, UtSW] = calendar:local_time_to_universal_time_dst(LtSW),
ok;
{{1969,12,31},{23,59,59}} ->
%% It seems that Apple has no intention of fixing this bug in
%% Mac OS 10.3.9, and we have no intention of implementing a
%% workaround.
{comment,"Bug in mktime() in this OS"}
end.
iso_week_number(doc) ->
"Test the iso week number calculation for all three possibilities."
" When the date falls on the last week of the previous year,"
" when the date falls on a week within the given year and finally,"
" when the date falls on the first week of the next year.";
iso_week_number(suite) ->
[];
iso_week_number(Config) when is_list(Config) ->
?line check_iso_week_number().
%%
%% LOCAL FUNCTIONS
%%
%% check_gregorian_days
%%
check_gregorian_days(Days, MaxDays) when Days < MaxDays ->
?line Date = calendar:gregorian_days_to_date(Days),
?line true = calendar:valid_date(Date),
?line Days = calendar:date_to_gregorian_days(Date),
?line check_gregorian_days(Days + 1, MaxDays);
check_gregorian_days(_Days, _MaxDays) ->
ok.
%% check_gregorian_seconds
%%
%% We increment with something prime (172801 = 2 days + 1 second).
%%
check_gregorian_seconds(Secs, MaxSecs) when Secs < MaxSecs ->
?line DateTime = calendar:gregorian_seconds_to_datetime(Secs),
?line Secs = calendar:datetime_to_gregorian_seconds(DateTime),
?line check_gregorian_seconds(Secs + 172801, MaxSecs);
check_gregorian_seconds(_Secs, _MaxSecs) ->
ok.
%% check_day_of_the_week
%%
check_day_of_the_week(Days, MaxDays, DayNumber) when Days < MaxDays ->
?line Date = calendar:gregorian_days_to_date(Days),
?line DayNumber = calendar:day_of_the_week(Date),
?line check_day_of_the_week(Days + 1, MaxDays,
((DayNumber rem 7) + 1));
check_day_of_the_week(_Days, _MaxDays, _DayNumber) ->
ok.
%% check_leap_years
%%
%% SYr must be larger than 1800, and EYr must be less than ?END_YEAR.
%%
check_leap_years(SYr, EYr) when SYr < EYr ->
?line Rem = SYr rem 4,
case Rem of
0 ->
case SYr of
1900 ->
?line false = calendar:is_leap_year(SYr);
2000 ->
?line true = calendar:is_leap_year(SYr);
_ ->
?line true = calendar:is_leap_year(SYr)
end;
_ ->
?line false = calendar:is_leap_year(SYr)
end,
check_leap_years(SYr + 1, EYr);
check_leap_years(_SYr, _EYr) ->
ok.
check_last_day_of_the_month({SYr, SMon}, {EYr, EMon}) when SYr < EYr ->
?line LastDay = calendar:last_day_of_the_month(SYr, SMon),
?line LastDay = case SMon of
1 -> 31;
2 ->
case calendar:is_leap_year(SYr) of
true -> 29;
false -> 28
end;
3 -> 31;
4 -> 30;
5 -> 31;
6 -> 30;
7 -> 31;
8 -> 31;
9 -> 30;
10 -> 31;
11 -> 30;
12 -> 31
end,
?line NYr = case SMon of
12 -> SYr + 1;
_ -> SYr
end,
?line check_last_day_of_the_month({NYr, (SMon rem 12) + 1},
{EYr, EMon});
check_last_day_of_the_month(_, _) ->
ok.
%% check_iso_week_number
%%
check_iso_week_number() ->
?line {2004, 53} = calendar:iso_week_number({2005, 1, 1}),
?line {2007, 1} = calendar:iso_week_number({2007, 1, 1}),
?line {2009, 1} = calendar:iso_week_number({2008, 12, 29}).
